diff --git a/README.md b/README.md
index b734ad3..18bbcfa 100644
--- a/README.md
+++ b/README.md
@@ -478,6 +478,9 @@ Pull Request should include source code (./scr) changes, may include tests (./te
## Change log
+### v1.9.1
+ * Fixed ES5 build.
+
### v1.9.0
* Webpack 5 build.
diff --git a/bower.json b/bower.json
index b2f6355..e1e021d 100644
--- a/bower.json
+++ b/bower.json
@@ -1,7 +1,7 @@
{
"name": "angular-ui-scroll",
"description": "AngularJS infinite scrolling module",
- "version": "1.9.0",
+ "version": "1.9.1",
"main": "./dist/ui-scroll.js",
"homepage": "https://github.com/angular-ui/ui-scroll.git",
"license": "MIT",
diff --git a/dist/ui-scroll-grid.js b/dist/ui-scroll-grid.js
index c3f72b1..afd2a7b 100644
--- a/dist/ui-scroll-grid.js
+++ b/dist/ui-scroll-grid.js
@@ -1,10 +1,10 @@
/*!
* angular-ui-scroll
* https://github.com/angular-ui/ui-scroll
- * Version: 1.9.0 -- 2023-04-19T12:05:19.939Z
+ * Version: 1.9.1 -- 2023-05-17T15:38:46.936Z
* License: MIT
*/
-/******/ (() => { // webpackBootstrap
+/******/ (function() { // webpackBootstrap
var __webpack_exports__ = {};
angular.module('ui.scroll.grid', []).directive('uiScrollTh', ['$log', '$timeout', function (console, $timeout) {
function GridAdapter(controller) {
diff --git a/dist/ui-scroll.js b/dist/ui-scroll.js
index cd26995..0800d7c 100644
--- a/dist/ui-scroll.js
+++ b/dist/ui-scroll.js
@@ -1,10 +1,10 @@
/*!
* angular-ui-scroll
* https://github.com/angular-ui/ui-scroll
- * Version: 1.9.0 -- 2023-04-19T12:05:19.939Z
+ * Version: 1.9.1 -- 2023-05-17T15:38:46.936Z
* License: MIT
*/
-/******/ (() => { // webpackBootstrap
+/******/ (function() { // webpackBootstrap
/******/ "use strict";
var __webpack_exports__ = {};
@@ -637,7 +637,7 @@ var Padding = /*#__PURE__*/function () {
}]);
return Padding;
}();
-/* harmony default export */ const modules_padding = (Padding);
+/* harmony default export */ var modules_padding = (Padding);
;// CONCATENATED MODULE: ./src/modules/viewport.js
function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {
@@ -1098,7 +1098,7 @@ var Adapter = /*#__PURE__*/function () {
}]);
return Adapter;
}();
-/* harmony default export */ const modules_adapter = (Adapter);
+/* harmony default export */ var modules_adapter = (Adapter);
;// CONCATENATED MODULE: ./src/ui-scroll.js
diff --git a/dist/ui-scroll.js.map b/dist/ui-scroll.js.map
index d509e2e..ff633fb 100644
--- a/dist/ui-scroll.js.map
+++ b/dist/ui-scroll.js.map
@@ -1 +1 @@
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globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export const OPERATIONS = {\r\n PREPEND: 'prepend',\r\n APPEND: 'append',\r\n INSERT: 'insert',\r\n REMOVE: 'remove',\r\n NONE: 'none'\r\n};\r\n","import { OPERATIONS } from './utils';\r\n\r\nexport default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert(OPERATIONS.APPEND, item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items, immutableTop) {\r\n items.reverse().forEach((item) => {\r\n if (immutableTop) {\r\n ++buffer.next;\r\n }\r\n else {\r\n --buffer.first;\r\n }\r\n buffer.insert(OPERATIONS.PREPEND, item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'none'\r\n */\r\n insert(operation, item, shiftTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) { // it is an insert\r\n wrapper.op = OPERATIONS.INSERT;\r\n buffer.splice(operation, 0, wrapper);\r\n if (shiftTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case OPERATIONS.APPEND:\r\n buffer.push(wrapper);\r\n break;\r\n case OPERATIONS.PREPEND:\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item (wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if (arg1.shiftTop && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if (arg1.shiftTop) {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if (!buffer.length) {\r\n buffer.minIndex = Math.min(buffer.maxIndex, buffer.minIndex);\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n if (buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if (buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if (buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if (buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n },\r\n\r\n getItems() {\r\n return buffer.filter(item => item.op === OPERATIONS.NONE);\r\n },\r\n\r\n getFirstItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[0].item;\r\n },\r\n\r\n getLastItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[list.length - 1].item;\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _shiftTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const shiftTop = argument % 1 === 0 ? _shiftTop : argument.shiftTop;\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if (!shiftTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if (template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('');\r\n break;\r\n default:\r\n element = angular.element('');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if (container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if (item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if (item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length) {\r\n return;\r\n }\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n return;\r\n }\r\n const position = viewport.scrollTop();\r\n const newPosition = position - paddingHeight;\r\n viewport.synthetic = { previous: position, next: newPosition };\r\n topPadding.height(0);\r\n viewport.scrollTop(newPosition);\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, shiftTop) {\r\n topPadding.cache.remove(item, shiftTop);\r\n bottomPadding.cache.remove(item, shiftTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","import { OPERATIONS } from './utils';\r\n\r\nclass Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // read-only immediately calculated public properties\r\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\r\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\r\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\r\n get: () => this[publicPropsImmediate[i]]\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n get bufferLength() {\r\n return this.buffer.getItems().length;\r\n }\r\n\r\n get bufferFirst() {\r\n return this.buffer.getFirstItem();\r\n }\r\n\r\n get bufferLast() {\r\n return this.buffer.getLastItem();\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems, options = {}) {\r\n this.buffer.prepend(newItems, options.immutableTop);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2, arg3) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1, arg2);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2, arg3);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb, options = {}) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems, options = {}) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems, options);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\r\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems, options = {}) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = OPERATIONS.REMOVE;\r\n // try to catch \"first\" edge case on remove\r\n if (!options.immutableTop && !newItems.length) {\r\n // this is the first item, or the previous one's part of the \"shift-top\" group\r\n if (\r\n (position === 0 && this.buffer.bof) ||\r\n (position !== 0 && this.buffer[position - 1].shiftTop)\r\n ) {\r\n wrapper.shiftTop = true;\r\n }\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (shiftTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\r\nimport ElementRoutines from './modules/elementRoutines.js';\r\nimport ScrollBuffer from './modules/buffer.js';\r\nimport Viewport from './modules/viewport.js';\r\nimport Adapter from './modules/adapter.js';\r\nimport { OPERATIONS } from './modules/utils';\r\n\r\nangular.module('ui.scroll', [])\r\n\r\n .constant('JQLiteExtras', JQLiteExtras)\r\n .run(['JQLiteExtras', (JQLiteExtras) => {\r\n const elt = angular.element;\r\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\r\n ElementRoutines.addCSSRules();\r\n }])\r\n\r\n .directive('uiScrollViewport', function () {\r\n return {\r\n restrict: 'A',\r\n controller: [\r\n '$scope',\r\n '$element',\r\n function (scope, element) {\r\n this.container = element;\r\n this.viewport = element;\r\n this.scope = scope;\r\n\r\n angular.forEach(element.children(), child => {\r\n if (child.tagName.toLowerCase() === 'tbody') {\r\n this.viewport = angular.element(child);\r\n }\r\n });\r\n\r\n return this;\r\n }\r\n ]\r\n };\r\n })\r\n\r\n .directive('uiScroll', [\r\n '$log',\r\n '$injector',\r\n '$rootScope',\r\n '$timeout',\r\n '$interval',\r\n '$q',\r\n '$parse',\r\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\r\n\r\n return {\r\n require: ['?^uiScrollViewport'],\r\n restrict: 'A',\r\n transclude: 'element',\r\n priority: 1000,\r\n terminal: true,\r\n link: link\r\n };\r\n\r\n function link($scope, element, $attr, controllers, linker) {\r\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\r\n if (!match) {\r\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\r\n }\r\n\r\n function parseNumber(value, defaultValue, isFloat) {\r\n if (!isFloat) {\r\n value = value === null ? defaultValue : Math.floor(value);\r\n }\r\n return isNaN(value) ? defaultValue : value;\r\n }\r\n\r\n function parseNumericAttr(value, defaultValue, isFloat) {\r\n const result = $parse(value)($scope);\r\n return parseNumber(result, defaultValue, isFloat);\r\n }\r\n\r\n function parseBooleanAttr(value, defaultValue) {\r\n const result = $parse(value)($scope);\r\n return typeof result === 'boolean' ? result : defaultValue;\r\n }\r\n\r\n const BUFFER_MIN = 3;\r\n const BUFFER_DEFAULT = 10;\r\n const PADDING_MIN = 0.3;\r\n const PADDING_DEFAULT = 0.5;\r\n const HANDLE_INERTIA_DEFAULT = true;\r\n const START_INDEX_DEFAULT = 1;\r\n const MAX_VIEWPORT_DELAY = 500;\r\n const VIEWPORT_POLLING_INTERVAL = 50;\r\n\r\n let datasource = null;\r\n const itemName = match[1];\r\n const datasourceName = match[2];\r\n const viewportController = controllers[0];\r\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\r\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\r\n const handleInertia = parseBooleanAttr($attr.handleInertia, HANDLE_INERTIA_DEFAULT);\r\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\r\n let ridActual = 0; // current data revision id\r\n let pending = [];\r\n\r\n const elementRoutines = new ElementRoutines($injector, $q);\r\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\r\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\r\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\r\n\r\n if (viewportController) {\r\n viewportController.adapter = adapter;\r\n }\r\n\r\n const isDatasourceValid = () =>\r\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\r\n\r\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\r\n if (!isDatasourceValid()) {\r\n datasource = $injector.get(datasourceName); // try to inject datasource as service\r\n if (!isDatasourceValid()) {\r\n throw new Error(datasourceName + ' is not a valid datasource');\r\n }\r\n }\r\n\r\n let onRenderHandlers = [];\r\n function onRenderHandlersRunner() {\r\n onRenderHandlers.forEach(handler => handler.run());\r\n onRenderHandlers = [];\r\n }\r\n function persistDatasourceIndex(datasource, propName) {\r\n let getter;\r\n // need to postpone min/maxIndexUser processing if the view is empty\r\n if (angular.isNumber(datasource[propName])) {\r\n getter = datasource[propName];\r\n if (angular.isNumber(getter)) {\r\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\r\n onRenderHandlers.push({\r\n id: propName,\r\n run: () => datasource[propName] = getter\r\n });\r\n }\r\n }\r\n }\r\n\r\n function defineDatasourceIndex(datasource, propName, propUserName) {\r\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\r\n if (descriptor && (descriptor.set || descriptor.get)) {\r\n return;\r\n }\r\n let getter;\r\n persistDatasourceIndex(datasource, propName);\r\n Object.defineProperty(datasource, propName, {\r\n set: (value) => {\r\n getter = value;\r\n if (pending.length && !buffer.length) {\r\n persistDatasourceIndex(datasource, propName);\r\n return;\r\n }\r\n buffer[propUserName] = value;\r\n const topPaddingHeightOld = viewport.topDataPos();\r\n viewport.adjustPaddings();\r\n if (propName === 'minIndex') {\r\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\r\n }\r\n },\r\n get: () => getter\r\n });\r\n }\r\n\r\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\r\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\r\n\r\n const fetchNext = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.next, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.next,\r\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const fetchPrevious = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.first - bufferSize,\r\n prepend: buffer.length ? buffer[0].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const initialize = () => {\r\n let tryCount = 0;\r\n if (!viewport.applyContainerStyle()) {\r\n const timer = $interval(() => {\r\n tryCount++;\r\n if (viewport.applyContainerStyle()) {\r\n $interval.cancel(timer);\r\n doAdjust();\r\n }\r\n if (tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\r\n $interval.cancel(timer);\r\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\r\n }\r\n }, VIEWPORT_POLLING_INTERVAL);\r\n }\r\n else {\r\n doAdjust();\r\n }\r\n };\r\n\r\n /**\r\n * Build padding elements\r\n *\r\n * Calling linker is the only way I found to get access to the tag name of the template\r\n * to prevent the directive scope from pollution a new scope is created and destroyed\r\n * right after the builder creation is completed\r\n */\r\n linker((clone, scope) => {\r\n viewport.createPaddingElements(clone[0]);\r\n // we do not include the clone in the DOM. It means that the nested directives will not\r\n // be able to reach the parent directives, but in this case it is intentional because we\r\n // created the clone to access the template tag name\r\n scope.$destroy();\r\n clone.remove();\r\n });\r\n\r\n $scope.$on('$destroy', () => {\r\n unbindEvents();\r\n viewport.off('mousewheel', wheelHandler);\r\n });\r\n\r\n viewport.on('mousewheel', wheelHandler);\r\n\r\n initialize();\r\n\r\n /* Private function definitions */\r\n\r\n function isInvalid(rid) {\r\n return (rid && rid !== ridActual) || $scope.$$destroyed;\r\n }\r\n\r\n function bindEvents() {\r\n viewport.on('resize', resizeAndScrollHandler);\r\n viewport.on('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function unbindEvents() {\r\n viewport.off('resize', resizeAndScrollHandler);\r\n viewport.off('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function reload() {\r\n unbindEvents();\r\n viewport.resetTopPadding();\r\n viewport.resetBottomPadding();\r\n if (arguments.length) {\r\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\r\n }\r\n buffer.reset(startIndex);\r\n persistDatasourceIndex(datasource, 'minIndex');\r\n persistDatasourceIndex(datasource, 'maxIndex');\r\n doAdjust();\r\n }\r\n\r\n function isElementVisible(wrapper) {\r\n return wrapper.element.height() && wrapper.element[0].offsetParent;\r\n }\r\n\r\n function visibilityWatcher(wrapper) {\r\n if (isElementVisible(wrapper)) {\r\n buffer.forEach((item) => {\r\n if (typeof item.unregisterVisibilityWatcher === 'function') {\r\n item.unregisterVisibilityWatcher();\r\n delete item.unregisterVisibilityWatcher;\r\n }\r\n });\r\n if (!pending.length) {\r\n $timeout(() => doAdjust());\r\n }\r\n }\r\n }\r\n\r\n function insertWrapperContent(wrapper, insertAfter) {\r\n createElement(wrapper, insertAfter, viewport.insertElement);\r\n if (!isElementVisible(wrapper)) {\r\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\r\n }\r\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\r\n }\r\n\r\n function createElement(wrapper, insertAfter, insertElement) {\r\n let promises = null;\r\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\r\n linker((clone, scope) => {\r\n promises = insertElement(clone, sibling);\r\n wrapper.element = clone;\r\n wrapper.scope = scope;\r\n scope[itemName] = wrapper.item;\r\n });\r\n // ui-scroll-grid apply\r\n if (adapter.transform) {\r\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\r\n if (tdInitializer && tdInitializer.linking) {\r\n adapter.transform(wrapper.scope, wrapper.element);\r\n } else {\r\n wrapper.scope.uiScrollTdInitializer = {\r\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\r\n scope: wrapper.scope\r\n };\r\n }\r\n }\r\n return promises;\r\n }\r\n\r\n function updateDOM() {\r\n let promises = [];\r\n const toBePrepended = [];\r\n const toBeRemoved = [];\r\n const inserted = [];\r\n\r\n buffer.forEach((wrapper, i) => {\r\n switch (wrapper.op) {\r\n case OPERATIONS.PREPEND:\r\n toBePrepended.unshift(wrapper);\r\n break;\r\n case OPERATIONS.APPEND:\r\n insertWrapperContent(wrapper, i);\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.INSERT:\r\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.REMOVE:\r\n toBeRemoved.push(wrapper);\r\n }\r\n });\r\n\r\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\r\n\r\n if (toBePrepended.length)\r\n toBePrepended.forEach((wrapper) => {\r\n insertWrapperContent(wrapper);\r\n wrapper.op = OPERATIONS.NONE;\r\n });\r\n\r\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\r\n\r\n return {\r\n prepended: toBePrepended,\r\n removed: toBeRemoved,\r\n inserted: inserted,\r\n animated: promises\r\n };\r\n\r\n }\r\n\r\n function updatePaddings(rid, updates) {\r\n // schedule another doAdjust after animation completion\r\n if (updates.animated.length) {\r\n $q.all(updates.animated).then(() => {\r\n viewport.adjustPaddings();\r\n doAdjust(rid);\r\n });\r\n } else {\r\n viewport.adjustPaddings();\r\n }\r\n }\r\n\r\n function enqueueFetch(rid, updates) {\r\n if (viewport.shouldLoadBottom()) {\r\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n if (pending.push(true) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n } else if (viewport.shouldLoadTop()) {\r\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\r\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\r\n if (pending.push(false) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n }\r\n }\r\n\r\n function processUpdates() {\r\n const updates = updateDOM();\r\n\r\n // We need the item bindings to be processed before we can do adjustments\r\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\r\n\r\n updates.inserted.forEach(w => elementRoutines.showElement(w));\r\n updates.prepended.forEach(w => elementRoutines.showElement(w));\r\n return updates;\r\n }\r\n\r\n function doAdjust(rid) {\r\n if (!rid) { // dismiss pending requests\r\n pending = [];\r\n rid = ++ridActual;\r\n }\r\n\r\n const updates = processUpdates();\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n enqueueFetch(rid);\r\n\r\n if (!pending.length) {\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function doAdjustAfterFetch(rid) {\r\n const updates = processUpdates();\r\n\r\n viewport.onAfterPrepend(updates);\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n onRenderHandlersRunner();\r\n enqueueFetch(rid, updates);\r\n pending.shift();\r\n\r\n if (pending.length)\r\n fetch(rid);\r\n else {\r\n adapter.loading(false);\r\n bindEvents();\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function fetch(rid) {\r\n if (pending[0]) {// scrolling down\r\n if (buffer.length && !viewport.shouldLoadBottom()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n fetchNext((result) => {\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n if (result.length < bufferSize) {\r\n buffer.eof = true;\r\n }\r\n\r\n if (result.length > 0) {\r\n viewport.clipTop();\r\n buffer.append(result);\r\n }\r\n\r\n doAdjustAfterFetch(rid);\r\n });\r\n }\r\n } else { // scrolling up\r\n if (buffer.length && !viewport.shouldLoadTop()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n fetchPrevious((result) => {\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n if (result.length < bufferSize) {\r\n buffer.bof = true;\r\n // log 'bof is reached'\r\n }\r\n\r\n if (result.length > 0) {\r\n if (buffer.length) {\r\n viewport.clipBottom();\r\n }\r\n buffer.prepend(result);\r\n }\r\n\r\n doAdjustAfterFetch(rid);\r\n });\r\n }\r\n }\r\n }\r\n\r\n function fixInertia() {\r\n if (!viewport.synthetic) {\r\n return;\r\n }\r\n const oldPosition = viewport.synthetic.previous;\r\n const newPosition = viewport.synthetic.next;\r\n if (viewport.scrollTop() !== newPosition) {\r\n requestAnimationFrame(() => {\r\n const position = viewport.scrollTop();\r\n const diff = oldPosition - position;\r\n if (diff > 0) { // inertia over synthetic\r\n viewport.scrollTop(newPosition - diff);\r\n } else {\r\n viewport.scrollTop(newPosition);\r\n }\r\n viewport.synthetic = null;\r\n });\r\n return true;\r\n }\r\n viewport.synthetic = null;\r\n }\r\n\r\n function resizeAndScrollHandler() {\r\n if (handleInertia && fixInertia()) {\r\n return;\r\n }\r\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\r\n\r\n enqueueFetch(ridActual);\r\n\r\n if (pending.length) {\r\n unbindEvents();\r\n } else {\r\n adapter.calculateProperties();\r\n !$scope.$$phase && $scope.$digest();\r\n }\r\n }\r\n }\r\n\r\n function wheelHandler(event) {\r\n if (!adapter.disabled) {\r\n const scrollTop = viewport[0].scrollTop;\r\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\r\n\r\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\r\n event.preventDefault();\r\n }\r\n }\r\n }\r\n }\r\n\r\n }\r\n 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globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export const OPERATIONS = {\r\n PREPEND: 'prepend',\r\n APPEND: 'append',\r\n INSERT: 'insert',\r\n REMOVE: 'remove',\r\n NONE: 'none'\r\n};\r\n","import { OPERATIONS } from './utils';\r\n\r\nexport default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert(OPERATIONS.APPEND, item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items, immutableTop) {\r\n items.reverse().forEach((item) => {\r\n if (immutableTop) {\r\n ++buffer.next;\r\n }\r\n else {\r\n --buffer.first;\r\n }\r\n buffer.insert(OPERATIONS.PREPEND, item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'none'\r\n */\r\n insert(operation, item, shiftTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) { // it is an insert\r\n wrapper.op = OPERATIONS.INSERT;\r\n buffer.splice(operation, 0, wrapper);\r\n if (shiftTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case OPERATIONS.APPEND:\r\n buffer.push(wrapper);\r\n break;\r\n case OPERATIONS.PREPEND:\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item (wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if (arg1.shiftTop && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if (arg1.shiftTop) {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if (!buffer.length) {\r\n buffer.minIndex = Math.min(buffer.maxIndex, buffer.minIndex);\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n if (buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if (buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if (buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if (buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n },\r\n\r\n getItems() {\r\n return buffer.filter(item => item.op === OPERATIONS.NONE);\r\n },\r\n\r\n getFirstItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[0].item;\r\n },\r\n\r\n getLastItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[list.length - 1].item;\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _shiftTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const shiftTop = argument % 1 === 0 ? _shiftTop : argument.shiftTop;\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if (!shiftTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if (template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('');\r\n break;\r\n default:\r\n element = angular.element('');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if (container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if (item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if (item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length) {\r\n return;\r\n }\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n return;\r\n }\r\n const position = viewport.scrollTop();\r\n const newPosition = position - paddingHeight;\r\n viewport.synthetic = { previous: position, next: newPosition };\r\n topPadding.height(0);\r\n viewport.scrollTop(newPosition);\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, shiftTop) {\r\n topPadding.cache.remove(item, shiftTop);\r\n bottomPadding.cache.remove(item, shiftTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","import { OPERATIONS } from './utils';\r\n\r\nclass Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // read-only immediately calculated public properties\r\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\r\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\r\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\r\n get: () => this[publicPropsImmediate[i]]\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n get bufferLength() {\r\n return this.buffer.getItems().length;\r\n }\r\n\r\n get bufferFirst() {\r\n return this.buffer.getFirstItem();\r\n }\r\n\r\n get bufferLast() {\r\n return this.buffer.getLastItem();\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems, options = {}) {\r\n this.buffer.prepend(newItems, options.immutableTop);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2, arg3) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1, arg2);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2, arg3);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb, options = {}) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems, options = {}) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems, options);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\r\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems, options = {}) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = OPERATIONS.REMOVE;\r\n // try to catch \"first\" edge case on remove\r\n if (!options.immutableTop && !newItems.length) {\r\n // this is the first item, or the previous one's part of the \"shift-top\" group\r\n if (\r\n (position === 0 && this.buffer.bof) ||\r\n (position !== 0 && this.buffer[position - 1].shiftTop)\r\n ) {\r\n wrapper.shiftTop = true;\r\n }\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (shiftTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\r\nimport ElementRoutines from './modules/elementRoutines.js';\r\nimport ScrollBuffer from './modules/buffer.js';\r\nimport Viewport from './modules/viewport.js';\r\nimport Adapter from './modules/adapter.js';\r\nimport { OPERATIONS } from './modules/utils';\r\n\r\nangular.module('ui.scroll', [])\r\n\r\n .constant('JQLiteExtras', JQLiteExtras)\r\n .run(['JQLiteExtras', (JQLiteExtras) => {\r\n const elt = angular.element;\r\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\r\n ElementRoutines.addCSSRules();\r\n }])\r\n\r\n .directive('uiScrollViewport', function () {\r\n return {\r\n restrict: 'A',\r\n controller: [\r\n '$scope',\r\n '$element',\r\n function (scope, element) {\r\n this.container = element;\r\n this.viewport = element;\r\n this.scope = scope;\r\n\r\n angular.forEach(element.children(), child => {\r\n if (child.tagName.toLowerCase() === 'tbody') {\r\n this.viewport = angular.element(child);\r\n }\r\n });\r\n\r\n return this;\r\n }\r\n ]\r\n };\r\n })\r\n\r\n .directive('uiScroll', [\r\n '$log',\r\n '$injector',\r\n '$rootScope',\r\n '$timeout',\r\n '$interval',\r\n '$q',\r\n '$parse',\r\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\r\n\r\n return {\r\n require: ['?^uiScrollViewport'],\r\n restrict: 'A',\r\n transclude: 'element',\r\n priority: 1000,\r\n terminal: true,\r\n link: link\r\n };\r\n\r\n function link($scope, element, $attr, controllers, linker) {\r\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\r\n if (!match) {\r\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\r\n }\r\n\r\n function parseNumber(value, defaultValue, isFloat) {\r\n if (!isFloat) {\r\n value = value === null ? defaultValue : Math.floor(value);\r\n }\r\n return isNaN(value) ? defaultValue : value;\r\n }\r\n\r\n function parseNumericAttr(value, defaultValue, isFloat) {\r\n const result = $parse(value)($scope);\r\n return parseNumber(result, defaultValue, isFloat);\r\n }\r\n\r\n function parseBooleanAttr(value, defaultValue) {\r\n const result = $parse(value)($scope);\r\n return typeof result === 'boolean' ? result : defaultValue;\r\n }\r\n\r\n const BUFFER_MIN = 3;\r\n const BUFFER_DEFAULT = 10;\r\n const PADDING_MIN = 0.3;\r\n const PADDING_DEFAULT = 0.5;\r\n const HANDLE_INERTIA_DEFAULT = true;\r\n const START_INDEX_DEFAULT = 1;\r\n const MAX_VIEWPORT_DELAY = 500;\r\n const VIEWPORT_POLLING_INTERVAL = 50;\r\n\r\n let datasource = null;\r\n const itemName = match[1];\r\n const datasourceName = match[2];\r\n const viewportController = controllers[0];\r\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\r\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\r\n const handleInertia = parseBooleanAttr($attr.handleInertia, HANDLE_INERTIA_DEFAULT);\r\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\r\n let ridActual = 0; // current data revision id\r\n let pending = [];\r\n\r\n const elementRoutines = new ElementRoutines($injector, $q);\r\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\r\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\r\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\r\n\r\n if (viewportController) {\r\n viewportController.adapter = adapter;\r\n }\r\n\r\n const isDatasourceValid = () =>\r\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\r\n\r\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\r\n if (!isDatasourceValid()) {\r\n datasource = $injector.get(datasourceName); // try to inject datasource as service\r\n if (!isDatasourceValid()) {\r\n throw new Error(datasourceName + ' is not a valid datasource');\r\n }\r\n }\r\n\r\n let onRenderHandlers = [];\r\n function onRenderHandlersRunner() {\r\n onRenderHandlers.forEach(handler => handler.run());\r\n onRenderHandlers = [];\r\n }\r\n function persistDatasourceIndex(datasource, propName) {\r\n let getter;\r\n // need to postpone min/maxIndexUser processing if the view is empty\r\n if (angular.isNumber(datasource[propName])) {\r\n getter = datasource[propName];\r\n if (angular.isNumber(getter)) {\r\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\r\n onRenderHandlers.push({\r\n id: propName,\r\n run: () => datasource[propName] = getter\r\n });\r\n }\r\n }\r\n }\r\n\r\n function defineDatasourceIndex(datasource, propName, propUserName) {\r\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\r\n if (descriptor && (descriptor.set || descriptor.get)) {\r\n return;\r\n }\r\n let getter;\r\n persistDatasourceIndex(datasource, propName);\r\n Object.defineProperty(datasource, propName, {\r\n set: (value) => {\r\n getter = value;\r\n if (pending.length && !buffer.length) {\r\n persistDatasourceIndex(datasource, propName);\r\n return;\r\n }\r\n buffer[propUserName] = value;\r\n const topPaddingHeightOld = viewport.topDataPos();\r\n viewport.adjustPaddings();\r\n if (propName === 'minIndex') {\r\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\r\n }\r\n },\r\n get: () => getter\r\n });\r\n }\r\n\r\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\r\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\r\n\r\n const fetchNext = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.next, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.next,\r\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const fetchPrevious = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.first - bufferSize,\r\n prepend: buffer.length ? buffer[0].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const initialize = () => {\r\n let tryCount = 0;\r\n if (!viewport.applyContainerStyle()) {\r\n const timer = $interval(() => {\r\n tryCount++;\r\n if (viewport.applyContainerStyle()) {\r\n $interval.cancel(timer);\r\n doAdjust();\r\n }\r\n if (tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\r\n $interval.cancel(timer);\r\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\r\n }\r\n }, VIEWPORT_POLLING_INTERVAL);\r\n }\r\n else {\r\n doAdjust();\r\n }\r\n };\r\n\r\n /**\r\n * Build padding elements\r\n *\r\n * Calling linker is the only way I found to get access to the tag name of the template\r\n * to prevent the directive scope from pollution a new scope is created and destroyed\r\n * right after the builder creation is completed\r\n */\r\n linker((clone, scope) => {\r\n viewport.createPaddingElements(clone[0]);\r\n // we do not include the clone in the DOM. It means that the nested directives will not\r\n // be able to reach the parent directives, but in this case it is intentional because we\r\n // created the clone to access the template tag name\r\n scope.$destroy();\r\n clone.remove();\r\n });\r\n\r\n $scope.$on('$destroy', () => {\r\n unbindEvents();\r\n viewport.off('mousewheel', wheelHandler);\r\n });\r\n\r\n viewport.on('mousewheel', wheelHandler);\r\n\r\n initialize();\r\n\r\n /* Private function definitions */\r\n\r\n function isInvalid(rid) {\r\n return (rid && rid !== ridActual) || $scope.$$destroyed;\r\n }\r\n\r\n function bindEvents() {\r\n viewport.on('resize', resizeAndScrollHandler);\r\n viewport.on('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function unbindEvents() {\r\n viewport.off('resize', resizeAndScrollHandler);\r\n viewport.off('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function reload() {\r\n unbindEvents();\r\n viewport.resetTopPadding();\r\n viewport.resetBottomPadding();\r\n if (arguments.length) {\r\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\r\n }\r\n buffer.reset(startIndex);\r\n persistDatasourceIndex(datasource, 'minIndex');\r\n persistDatasourceIndex(datasource, 'maxIndex');\r\n doAdjust();\r\n }\r\n\r\n function isElementVisible(wrapper) {\r\n return wrapper.element.height() && wrapper.element[0].offsetParent;\r\n }\r\n\r\n function visibilityWatcher(wrapper) {\r\n if (isElementVisible(wrapper)) {\r\n buffer.forEach((item) => {\r\n if (typeof item.unregisterVisibilityWatcher === 'function') {\r\n item.unregisterVisibilityWatcher();\r\n delete item.unregisterVisibilityWatcher;\r\n }\r\n });\r\n if (!pending.length) {\r\n $timeout(() => doAdjust());\r\n }\r\n }\r\n }\r\n\r\n function insertWrapperContent(wrapper, insertAfter) {\r\n createElement(wrapper, insertAfter, viewport.insertElement);\r\n if (!isElementVisible(wrapper)) {\r\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\r\n }\r\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\r\n }\r\n\r\n function createElement(wrapper, insertAfter, insertElement) {\r\n let promises = null;\r\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\r\n linker((clone, scope) => {\r\n promises = insertElement(clone, sibling);\r\n wrapper.element = clone;\r\n wrapper.scope = scope;\r\n scope[itemName] = wrapper.item;\r\n });\r\n // ui-scroll-grid apply\r\n if (adapter.transform) {\r\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\r\n if (tdInitializer && tdInitializer.linking) {\r\n adapter.transform(wrapper.scope, wrapper.element);\r\n } else {\r\n wrapper.scope.uiScrollTdInitializer = {\r\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\r\n scope: wrapper.scope\r\n };\r\n }\r\n }\r\n return promises;\r\n }\r\n\r\n function updateDOM() {\r\n let promises = [];\r\n const toBePrepended = [];\r\n const toBeRemoved = [];\r\n const inserted = [];\r\n\r\n buffer.forEach((wrapper, i) => {\r\n switch (wrapper.op) {\r\n case OPERATIONS.PREPEND:\r\n toBePrepended.unshift(wrapper);\r\n break;\r\n case OPERATIONS.APPEND:\r\n insertWrapperContent(wrapper, i);\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.INSERT:\r\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.REMOVE:\r\n toBeRemoved.push(wrapper);\r\n }\r\n });\r\n\r\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\r\n\r\n if (toBePrepended.length)\r\n toBePrepended.forEach((wrapper) => {\r\n insertWrapperContent(wrapper);\r\n wrapper.op = OPERATIONS.NONE;\r\n });\r\n\r\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\r\n\r\n return {\r\n prepended: toBePrepended,\r\n removed: toBeRemoved,\r\n inserted: inserted,\r\n animated: promises\r\n };\r\n\r\n }\r\n\r\n function updatePaddings(rid, updates) {\r\n // schedule another doAdjust after animation completion\r\n if (updates.animated.length) {\r\n $q.all(updates.animated).then(() => {\r\n viewport.adjustPaddings();\r\n doAdjust(rid);\r\n });\r\n } else {\r\n viewport.adjustPaddings();\r\n }\r\n }\r\n\r\n function enqueueFetch(rid, updates) {\r\n if (viewport.shouldLoadBottom()) {\r\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n if (pending.push(true) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n } else if (viewport.shouldLoadTop()) {\r\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\r\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\r\n if (pending.push(false) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n }\r\n }\r\n\r\n function processUpdates() {\r\n const updates = updateDOM();\r\n\r\n // We need the item bindings to be processed before we can do adjustments\r\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\r\n\r\n updates.inserted.forEach(w => elementRoutines.showElement(w));\r\n updates.prepended.forEach(w => elementRoutines.showElement(w));\r\n return updates;\r\n }\r\n\r\n function doAdjust(rid) {\r\n if (!rid) { // dismiss pending requests\r\n pending = [];\r\n rid = ++ridActual;\r\n }\r\n\r\n const updates = processUpdates();\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n enqueueFetch(rid);\r\n\r\n if (!pending.length) {\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function doAdjustAfterFetch(rid) {\r\n const updates = processUpdates();\r\n\r\n viewport.onAfterPrepend(updates);\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n onRenderHandlersRunner();\r\n enqueueFetch(rid, updates);\r\n pending.shift();\r\n\r\n if (pending.length)\r\n fetch(rid);\r\n else {\r\n adapter.loading(false);\r\n bindEvents();\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function fetch(rid) {\r\n if (pending[0]) {// scrolling down\r\n if (buffer.length && !viewport.shouldLoadBottom()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n fetchNext((result) => {\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n if (result.length < bufferSize) {\r\n buffer.eof = true;\r\n }\r\n\r\n if (result.length > 0) {\r\n viewport.clipTop();\r\n buffer.append(result);\r\n }\r\n\r\n doAdjustAfterFetch(rid);\r\n });\r\n }\r\n } else { // scrolling up\r\n if (buffer.length && !viewport.shouldLoadTop()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n fetchPrevious((result) => {\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n if (result.length < bufferSize) {\r\n buffer.bof = true;\r\n // log 'bof is reached'\r\n }\r\n\r\n if (result.length > 0) {\r\n if (buffer.length) {\r\n viewport.clipBottom();\r\n }\r\n buffer.prepend(result);\r\n }\r\n\r\n doAdjustAfterFetch(rid);\r\n });\r\n }\r\n }\r\n }\r\n\r\n function fixInertia() {\r\n if (!viewport.synthetic) {\r\n return;\r\n }\r\n const oldPosition = viewport.synthetic.previous;\r\n const newPosition = viewport.synthetic.next;\r\n if (viewport.scrollTop() !== newPosition) {\r\n requestAnimationFrame(() => {\r\n const position = viewport.scrollTop();\r\n const diff = oldPosition - position;\r\n if (diff > 0) { // inertia over synthetic\r\n viewport.scrollTop(newPosition - diff);\r\n } else {\r\n viewport.scrollTop(newPosition);\r\n }\r\n viewport.synthetic = null;\r\n });\r\n return true;\r\n }\r\n viewport.synthetic = null;\r\n }\r\n\r\n function resizeAndScrollHandler() {\r\n if (handleInertia && fixInertia()) {\r\n return;\r\n }\r\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\r\n\r\n enqueueFetch(ridActual);\r\n\r\n if (pending.length) {\r\n unbindEvents();\r\n } else {\r\n adapter.calculateProperties();\r\n !$scope.$$phase && $scope.$digest();\r\n }\r\n }\r\n }\r\n\r\n function wheelHandler(event) {\r\n if (!adapter.disabled) {\r\n const scrollTop = viewport[0].scrollTop;\r\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\r\n\r\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\r\n event.preventDefault();\r\n }\r\n }\r\n }\r\n }\r\n\r\n }\r\n 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\ No newline at end of file
diff --git a/dist/ui-scroll.min.js b/dist/ui-scroll.min.js
index ce39730..29bc98c 100644
--- a/dist/ui-scroll.min.js
+++ b/dist/ui-scroll.min.js
@@ -1,2 +1,2 @@
-(()=>{"use strict";function e(t){return e="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},e(t)}function t(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var n=null==e?null:"undefined"!=typeof Symbol&&e[Symbol.iterator]||e["@@iterator"];if(null!=n){var r,i,o,a,u=[],l=!0,s=!1;try{if(o=(n=n.call(e)).next,0===t){if(Object(n)!==n)return;l=!1}else for(;!(l=(r=o.call(n)).done)&&(u.push(r.value),u.length!==t);l=!0);}catch(e){s=!0,i=e}finally{try{if(!l&&null!=n.return&&(a=n.return(),Object(a)!==a))return}finally{if(s)throw i}}return u}}(e,t)||function(e,t){if(!e)return;if("string"==typeof e)return n(e,t);var r=Object.prototype.toString.call(e).slice(8,-1);"Object"===r&&e.constructor&&(r=e.constructor.name);if("Map"===r||"Set"===r)return Array.from(e);if("Arguments"===r||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(r))return n(e,t)}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function n(e,t){(null==t||t>e.length)&&(t=e.length);for(var n=0,r=new Array(t);n0?{base:l.base-l.padding-l.border,outer:l.base,outerfull:l.base+l.margin}[a]:(((u=i(e)[r])<0||null===u)&&(u=e.style[r]||0),{base:(u=parseFloat(u)||0)-l.padding-l.border,outer:u,outerfull:u+l.padding+l.border+l.margin}[a])}return r=angular.element.prototype.css,e.prototype.css=function(e,t){var n=this[0];if(n&&3!==n.nodeType&&8!==n.nodeType&&n.style)return r.call(this,e,t)},o=function(e){return e&&e.document&&e.location&&e.alert&&e.setInterval},window.getComputedStyle?(i=function(e){return window.getComputedStyle(e,null)},n=function(e,t){return parseFloat(t)}):(i=function(e){return e.currentStyle},n=function(e,t){var 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diff --git a/dist/ui-scroll.min.js.map b/dist/ui-scroll.min.js.map
index 3ce29c5..7d3240a 100644
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+++ b/dist/ui-scroll.min.js.map
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globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export const OPERATIONS = {\r\n PREPEND: 'prepend',\r\n APPEND: 'append',\r\n INSERT: 'insert',\r\n REMOVE: 'remove',\r\n NONE: 'none'\r\n};\r\n","import { OPERATIONS } from './utils';\r\n\r\nexport default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert(OPERATIONS.APPEND, item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items, immutableTop) {\r\n items.reverse().forEach((item) => {\r\n if (immutableTop) {\r\n ++buffer.next;\r\n }\r\n else {\r\n --buffer.first;\r\n }\r\n buffer.insert(OPERATIONS.PREPEND, item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'none'\r\n */\r\n insert(operation, item, shiftTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) { // it is an insert\r\n wrapper.op = OPERATIONS.INSERT;\r\n buffer.splice(operation, 0, wrapper);\r\n if (shiftTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case OPERATIONS.APPEND:\r\n buffer.push(wrapper);\r\n break;\r\n case OPERATIONS.PREPEND:\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item (wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if (arg1.shiftTop && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if (arg1.shiftTop) {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if (!buffer.length) {\r\n buffer.minIndex = Math.min(buffer.maxIndex, buffer.minIndex);\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n if (buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if (buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if (buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if (buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n },\r\n\r\n getItems() {\r\n return buffer.filter(item => item.op === OPERATIONS.NONE);\r\n },\r\n\r\n getFirstItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[0].item;\r\n },\r\n\r\n getLastItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[list.length - 1].item;\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _shiftTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const shiftTop = argument % 1 === 0 ? _shiftTop : argument.shiftTop;\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if (!shiftTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if (template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('');\r\n break;\r\n default:\r\n element = angular.element('');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if (container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if (item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if (item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length) {\r\n return;\r\n }\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n return;\r\n }\r\n const position = viewport.scrollTop();\r\n const newPosition = position - paddingHeight;\r\n viewport.synthetic = { previous: position, next: newPosition };\r\n topPadding.height(0);\r\n viewport.scrollTop(newPosition);\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, shiftTop) {\r\n topPadding.cache.remove(item, shiftTop);\r\n bottomPadding.cache.remove(item, shiftTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","import { OPERATIONS } from './utils';\r\n\r\nclass Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // read-only immediately calculated public properties\r\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\r\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\r\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\r\n get: () => this[publicPropsImmediate[i]]\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n get bufferLength() {\r\n return this.buffer.getItems().length;\r\n }\r\n\r\n get bufferFirst() {\r\n return this.buffer.getFirstItem();\r\n }\r\n\r\n get bufferLast() {\r\n return this.buffer.getLastItem();\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems, options = {}) {\r\n this.buffer.prepend(newItems, options.immutableTop);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2, arg3) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1, arg2);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2, arg3);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb, options = {}) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems, options = {}) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems, options);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\r\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems, options = {}) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = OPERATIONS.REMOVE;\r\n // try to catch \"first\" edge case on remove\r\n if (!options.immutableTop && !newItems.length) {\r\n // this is the first item, or the previous one's part of the \"shift-top\" group\r\n if (\r\n (position === 0 && this.buffer.bof) ||\r\n (position !== 0 && this.buffer[position - 1].shiftTop)\r\n ) {\r\n wrapper.shiftTop = true;\r\n }\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (shiftTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\r\nimport ElementRoutines from './modules/elementRoutines.js';\r\nimport ScrollBuffer from './modules/buffer.js';\r\nimport Viewport from './modules/viewport.js';\r\nimport Adapter from './modules/adapter.js';\r\nimport { OPERATIONS } from './modules/utils';\r\n\r\nangular.module('ui.scroll', [])\r\n\r\n .constant('JQLiteExtras', JQLiteExtras)\r\n .run(['JQLiteExtras', (JQLiteExtras) => {\r\n const elt = angular.element;\r\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\r\n ElementRoutines.addCSSRules();\r\n }])\r\n\r\n .directive('uiScrollViewport', function () {\r\n return {\r\n restrict: 'A',\r\n controller: [\r\n '$scope',\r\n '$element',\r\n function (scope, element) {\r\n this.container = element;\r\n this.viewport = element;\r\n this.scope = scope;\r\n\r\n angular.forEach(element.children(), child => {\r\n if (child.tagName.toLowerCase() === 'tbody') {\r\n this.viewport = angular.element(child);\r\n }\r\n });\r\n\r\n return this;\r\n }\r\n ]\r\n };\r\n })\r\n\r\n .directive('uiScroll', [\r\n '$log',\r\n '$injector',\r\n '$rootScope',\r\n '$timeout',\r\n '$interval',\r\n '$q',\r\n '$parse',\r\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\r\n\r\n return {\r\n require: ['?^uiScrollViewport'],\r\n restrict: 'A',\r\n transclude: 'element',\r\n priority: 1000,\r\n terminal: true,\r\n link: link\r\n };\r\n\r\n function link($scope, element, $attr, controllers, linker) {\r\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\r\n if (!match) {\r\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\r\n }\r\n\r\n function parseNumber(value, defaultValue, isFloat) {\r\n if (!isFloat) {\r\n value = value === null ? defaultValue : Math.floor(value);\r\n }\r\n return isNaN(value) ? defaultValue : value;\r\n }\r\n\r\n function parseNumericAttr(value, defaultValue, isFloat) {\r\n const result = $parse(value)($scope);\r\n return parseNumber(result, defaultValue, isFloat);\r\n }\r\n\r\n function parseBooleanAttr(value, defaultValue) {\r\n const result = $parse(value)($scope);\r\n return typeof result === 'boolean' ? result : defaultValue;\r\n }\r\n\r\n const BUFFER_MIN = 3;\r\n const BUFFER_DEFAULT = 10;\r\n const PADDING_MIN = 0.3;\r\n const PADDING_DEFAULT = 0.5;\r\n const HANDLE_INERTIA_DEFAULT = true;\r\n const START_INDEX_DEFAULT = 1;\r\n const MAX_VIEWPORT_DELAY = 500;\r\n const VIEWPORT_POLLING_INTERVAL = 50;\r\n\r\n let datasource = null;\r\n const itemName = match[1];\r\n const datasourceName = match[2];\r\n const viewportController = controllers[0];\r\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\r\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\r\n const handleInertia = parseBooleanAttr($attr.handleInertia, HANDLE_INERTIA_DEFAULT);\r\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\r\n let ridActual = 0; // current data revision id\r\n let pending = [];\r\n\r\n const elementRoutines = new ElementRoutines($injector, $q);\r\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\r\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\r\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\r\n\r\n if (viewportController) {\r\n viewportController.adapter = adapter;\r\n }\r\n\r\n const isDatasourceValid = () =>\r\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\r\n\r\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\r\n if (!isDatasourceValid()) {\r\n datasource = $injector.get(datasourceName); // try to inject datasource as service\r\n if (!isDatasourceValid()) {\r\n throw new Error(datasourceName + ' is not a valid datasource');\r\n }\r\n }\r\n\r\n let onRenderHandlers = [];\r\n function onRenderHandlersRunner() {\r\n onRenderHandlers.forEach(handler => handler.run());\r\n onRenderHandlers = [];\r\n }\r\n function persistDatasourceIndex(datasource, propName) {\r\n let getter;\r\n // need to postpone min/maxIndexUser processing if the view is empty\r\n if (angular.isNumber(datasource[propName])) {\r\n getter = datasource[propName];\r\n if (angular.isNumber(getter)) {\r\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\r\n onRenderHandlers.push({\r\n id: propName,\r\n run: () => datasource[propName] = getter\r\n });\r\n }\r\n }\r\n }\r\n\r\n function defineDatasourceIndex(datasource, propName, propUserName) {\r\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\r\n if (descriptor && (descriptor.set || descriptor.get)) {\r\n return;\r\n }\r\n let getter;\r\n persistDatasourceIndex(datasource, propName);\r\n Object.defineProperty(datasource, propName, {\r\n set: (value) => {\r\n getter = value;\r\n if (pending.length && !buffer.length) {\r\n persistDatasourceIndex(datasource, propName);\r\n return;\r\n }\r\n buffer[propUserName] = value;\r\n const topPaddingHeightOld = viewport.topDataPos();\r\n viewport.adjustPaddings();\r\n if (propName === 'minIndex') {\r\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\r\n }\r\n },\r\n get: () => getter\r\n });\r\n }\r\n\r\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\r\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\r\n\r\n const fetchNext = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.next, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.next,\r\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const fetchPrevious = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.first - bufferSize,\r\n prepend: buffer.length ? buffer[0].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const initialize = () => {\r\n let tryCount = 0;\r\n if (!viewport.applyContainerStyle()) {\r\n const timer = $interval(() => {\r\n tryCount++;\r\n if (viewport.applyContainerStyle()) {\r\n $interval.cancel(timer);\r\n doAdjust();\r\n }\r\n if (tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\r\n $interval.cancel(timer);\r\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\r\n }\r\n }, VIEWPORT_POLLING_INTERVAL);\r\n }\r\n else {\r\n doAdjust();\r\n }\r\n };\r\n\r\n /**\r\n * Build padding elements\r\n *\r\n * Calling linker is the only way I found to get access to the tag name of the template\r\n * to prevent the directive scope from pollution a new scope is created and destroyed\r\n * right after the builder creation is completed\r\n */\r\n linker((clone, scope) => {\r\n viewport.createPaddingElements(clone[0]);\r\n // we do not include the clone in the DOM. It means that the nested directives will not\r\n // be able to reach the parent directives, but in this case it is intentional because we\r\n // created the clone to access the template tag name\r\n scope.$destroy();\r\n clone.remove();\r\n });\r\n\r\n $scope.$on('$destroy', () => {\r\n unbindEvents();\r\n viewport.off('mousewheel', wheelHandler);\r\n });\r\n\r\n viewport.on('mousewheel', wheelHandler);\r\n\r\n initialize();\r\n\r\n /* Private function definitions */\r\n\r\n function isInvalid(rid) {\r\n return (rid && rid !== ridActual) || $scope.$$destroyed;\r\n }\r\n\r\n function bindEvents() {\r\n viewport.on('resize', resizeAndScrollHandler);\r\n viewport.on('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function unbindEvents() {\r\n viewport.off('resize', resizeAndScrollHandler);\r\n viewport.off('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function reload() {\r\n unbindEvents();\r\n viewport.resetTopPadding();\r\n viewport.resetBottomPadding();\r\n if (arguments.length) {\r\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\r\n }\r\n buffer.reset(startIndex);\r\n persistDatasourceIndex(datasource, 'minIndex');\r\n persistDatasourceIndex(datasource, 'maxIndex');\r\n doAdjust();\r\n }\r\n\r\n function isElementVisible(wrapper) {\r\n return wrapper.element.height() && wrapper.element[0].offsetParent;\r\n }\r\n\r\n function visibilityWatcher(wrapper) {\r\n if (isElementVisible(wrapper)) {\r\n buffer.forEach((item) => {\r\n if (typeof item.unregisterVisibilityWatcher === 'function') {\r\n item.unregisterVisibilityWatcher();\r\n delete item.unregisterVisibilityWatcher;\r\n }\r\n });\r\n if (!pending.length) {\r\n $timeout(() => doAdjust());\r\n }\r\n }\r\n }\r\n\r\n function insertWrapperContent(wrapper, insertAfter) {\r\n createElement(wrapper, insertAfter, viewport.insertElement);\r\n if (!isElementVisible(wrapper)) {\r\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\r\n }\r\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\r\n }\r\n\r\n function createElement(wrapper, insertAfter, insertElement) {\r\n let promises = null;\r\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\r\n linker((clone, scope) => {\r\n promises = insertElement(clone, sibling);\r\n wrapper.element = clone;\r\n wrapper.scope = scope;\r\n scope[itemName] = wrapper.item;\r\n });\r\n // ui-scroll-grid apply\r\n if (adapter.transform) {\r\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\r\n if (tdInitializer && tdInitializer.linking) {\r\n adapter.transform(wrapper.scope, wrapper.element);\r\n } else {\r\n wrapper.scope.uiScrollTdInitializer = {\r\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\r\n scope: wrapper.scope\r\n };\r\n }\r\n }\r\n return promises;\r\n }\r\n\r\n function updateDOM() {\r\n let promises = [];\r\n const toBePrepended = [];\r\n const toBeRemoved = [];\r\n const inserted = [];\r\n\r\n buffer.forEach((wrapper, i) => {\r\n switch (wrapper.op) {\r\n case OPERATIONS.PREPEND:\r\n toBePrepended.unshift(wrapper);\r\n break;\r\n case OPERATIONS.APPEND:\r\n insertWrapperContent(wrapper, i);\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.INSERT:\r\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.REMOVE:\r\n toBeRemoved.push(wrapper);\r\n }\r\n });\r\n\r\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\r\n\r\n if (toBePrepended.length)\r\n toBePrepended.forEach((wrapper) => {\r\n insertWrapperContent(wrapper);\r\n wrapper.op = OPERATIONS.NONE;\r\n });\r\n\r\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\r\n\r\n return {\r\n prepended: toBePrepended,\r\n removed: toBeRemoved,\r\n inserted: inserted,\r\n animated: promises\r\n };\r\n\r\n }\r\n\r\n function updatePaddings(rid, updates) {\r\n // schedule another doAdjust after animation completion\r\n if (updates.animated.length) {\r\n $q.all(updates.animated).then(() => {\r\n viewport.adjustPaddings();\r\n doAdjust(rid);\r\n });\r\n } else {\r\n viewport.adjustPaddings();\r\n }\r\n }\r\n\r\n function enqueueFetch(rid, updates) {\r\n if (viewport.shouldLoadBottom()) {\r\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n if (pending.push(true) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n } else if (viewport.shouldLoadTop()) {\r\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\r\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\r\n if (pending.push(false) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n }\r\n }\r\n\r\n function processUpdates() {\r\n const updates = updateDOM();\r\n\r\n // We need the item bindings to be processed before we can do adjustments\r\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\r\n\r\n updates.inserted.forEach(w => elementRoutines.showElement(w));\r\n updates.prepended.forEach(w => elementRoutines.showElement(w));\r\n return updates;\r\n }\r\n\r\n function doAdjust(rid) {\r\n if (!rid) { // dismiss pending requests\r\n pending = [];\r\n rid = ++ridActual;\r\n }\r\n\r\n const updates = processUpdates();\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n enqueueFetch(rid);\r\n\r\n if (!pending.length) {\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function doAdjustAfterFetch(rid) {\r\n const updates = processUpdates();\r\n\r\n viewport.onAfterPrepend(updates);\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n onRenderHandlersRunner();\r\n enqueueFetch(rid, updates);\r\n pending.shift();\r\n\r\n if (pending.length)\r\n fetch(rid);\r\n else {\r\n adapter.loading(false);\r\n bindEvents();\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function fetch(rid) {\r\n if (pending[0]) {// scrolling down\r\n if (buffer.length && !viewport.shouldLoadBottom()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n fetchNext((result) => {\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n if (result.length < bufferSize) {\r\n buffer.eof = true;\r\n }\r\n\r\n if (result.length > 0) {\r\n viewport.clipTop();\r\n buffer.append(result);\r\n }\r\n\r\n doAdjustAfterFetch(rid);\r\n });\r\n }\r\n } else { // scrolling up\r\n if (buffer.length && !viewport.shouldLoadTop()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n 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globals: angular, window\r\n List of used element methods available in JQuery but not in JQuery Lite\r\n element.before(elem)\r\n element.height()\r\n element.outerHeight(true)\r\n element.height(value) = only for Top/Bottom padding elements\r\n element.scrollTop()\r\n element.scrollTop(value)\r\n */\r\n\r\nexport default class JQLiteExtras {\r\n\r\n registerFor(element) {\r\n let convertToPx, css, getStyle, isWindow;\r\n // angular implementation blows up if elem is the window\r\n css = angular.element.prototype.css;\r\n\r\n element.prototype.css = function (name, value) {\r\n let self = this;\r\n let elem = self[0];\r\n if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {\r\n return css.call(self, name, value);\r\n }\r\n };\r\n\r\n // as defined in angularjs v1.0.5\r\n isWindow = (obj) => obj && obj.document && obj.location && obj.alert && obj.setInterval;\r\n\r\n function scrollTo(self, direction, value) {\r\n let elem = self[0];\r\n let [method, prop, preserve] = {\r\n top: [\r\n 'scrollTop',\r\n 'pageYOffset',\r\n 'scrollLeft'\r\n ],\r\n left: [\r\n 'scrollLeft',\r\n 'pageXOffset',\r\n 'scrollTop'\r\n ]\r\n }[direction];\r\n\r\n const isValueDefined = typeof value !== 'undefined';\r\n if (isWindow(elem)) {\r\n if (isValueDefined) {\r\n return elem.scrollTo(self[preserve].call(self), value);\r\n }\r\n return (prop in elem) ? elem[prop] : elem.document.documentElement[method];\r\n } else {\r\n if (isValueDefined) {\r\n elem[method] = value;\r\n }\r\n return elem[method];\r\n }\r\n }\r\n\r\n if (window.getComputedStyle) {\r\n getStyle = (elem) => window.getComputedStyle(elem, null);\r\n convertToPx = (elem, value) => parseFloat(value);\r\n } else {\r\n getStyle = (elem) => elem.currentStyle;\r\n convertToPx = (elem, value) => {\r\n let left, result, rs, rsLeft, style;\r\n let core_pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\r\n let rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');\r\n\r\n if (!rnumnonpx.test(value)) {\r\n return parseFloat(value);\r\n }\r\n\r\n // ported from JQuery\r\n style = elem.style;\r\n left = style.left;\r\n rs = elem.runtimeStyle;\r\n rsLeft = rs && rs.left;\r\n if (rs) {\r\n rs.left = style.left;\r\n }\r\n // put in the new values to get a computed style out\r\n style.left = value;\r\n result = style.pixelLeft;\r\n style.left = left;\r\n if (rsLeft) {\r\n rs.left = rsLeft;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n function getMeasurements(elem, measure) {\r\n let base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;\r\n\r\n if (isWindow(elem)) {\r\n base = document.documentElement[{height: 'clientHeight', width: 'clientWidth'}[measure]];\r\n\r\n return {\r\n base: base,\r\n padding: 0,\r\n border: 0,\r\n margin: 0\r\n };\r\n }\r\n\r\n // Start with offset property\r\n [\r\n base,\r\n dirA,\r\n dirB\r\n ] = {\r\n width: [\r\n elem.offsetWidth,\r\n 'Left',\r\n 'Right'\r\n ],\r\n height: [\r\n elem.offsetHeight,\r\n 'Top',\r\n 'Bottom'\r\n ]\r\n }[measure];\r\n\r\n computedStyle = getStyle(elem);\r\n paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;\r\n paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;\r\n borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;\r\n borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;\r\n computedMarginA = computedStyle['margin' + dirA];\r\n computedMarginB = computedStyle['margin' + dirB];\r\n\r\n // I do not care for width for now, so this hack is irrelevant\r\n // if ( !supportsPercentMargin )\r\n // computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )\r\n // computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )\r\n marginA = convertToPx(elem, computedMarginA) || 0;\r\n marginB = convertToPx(elem, computedMarginB) || 0;\r\n\r\n return {\r\n base: base,\r\n padding: paddingA + paddingB,\r\n border: borderA + borderB,\r\n margin: marginA + marginB\r\n };\r\n }\r\n\r\n function getWidthHeight(elem, direction, measure) {\r\n let computedStyle, result;\r\n\r\n let measurements = getMeasurements(elem, direction);\r\n\r\n if (measurements.base > 0) {\r\n return {\r\n base: measurements.base - measurements.padding - measurements.border,\r\n outer: measurements.base,\r\n outerfull: measurements.base + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // Fall back to computed then uncomputed css if necessary\r\n computedStyle = getStyle(elem);\r\n result = computedStyle[direction];\r\n\r\n if (result < 0 || result === null) {\r\n result = elem.style[direction] || 0;\r\n }\r\n\r\n // Normalize \"\", auto, and prepare for extra\r\n result = parseFloat(result) || 0;\r\n\r\n return {\r\n base: result - measurements.padding - measurements.border,\r\n outer: result,\r\n outerfull: result + measurements.padding + measurements.border + measurements.margin\r\n }[measure];\r\n }\r\n\r\n // define missing methods\r\n return angular.forEach({\r\n before(newElem) {\r\n var children, elem, i, j, parent, ref, self;\r\n self = this;\r\n elem = self[0];\r\n parent = self.parent();\r\n children = parent.contents();\r\n if (children[0] === elem) {\r\n return parent.prepend(newElem);\r\n } else {\r\n for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {\r\n if (children[i] === elem) {\r\n angular.element(children[i - 1]).after(newElem);\r\n return;\r\n }\r\n }\r\n throw new Error('invalid DOM structure ' + elem.outerHTML);\r\n }\r\n },\r\n height (value){\r\n var self;\r\n self = this;\r\n if (typeof value !== 'undefined') {\r\n if (angular.isNumber(value)) {\r\n value = value + 'px';\r\n }\r\n return css.call(self, 'height', value);\r\n } else {\r\n return getWidthHeight(this[0], 'height', 'base');\r\n }\r\n },\r\n outerHeight(option) {\r\n return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');\r\n },\r\n outerWidth(option) {\r\n return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');\r\n },\r\n\r\n /*\r\n The offset setter method is not implemented\r\n */\r\n offset(value) {\r\n let docElem, win;\r\n let self = this;\r\n let box = {\r\n top: 0,\r\n left: 0\r\n };\r\n let elem = self[0];\r\n let doc = elem && elem.ownerDocument;\r\n\r\n if (arguments.length) {\r\n if (value === undefined) {\r\n return self;\r\n }\r\n // TODO: implement setter\r\n throw new Error('offset setter method is not implemented');\r\n }\r\n\r\n if (!doc) {\r\n return;\r\n }\r\n\r\n docElem = doc.documentElement;\r\n\r\n // TODO: Make sure it's not a disconnected DOM node\r\n\r\n if (elem.getBoundingClientRect != null) {\r\n box = elem.getBoundingClientRect();\r\n }\r\n\r\n win = doc.defaultView || doc.parentWindow;\r\n\r\n return {\r\n top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),\r\n left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)\r\n };\r\n },\r\n scrollTop(value) {\r\n return scrollTo(this, 'top', value);\r\n },\r\n scrollLeft(value) {\r\n return scrollTo(this, 'left', value);\r\n }\r\n }, (value, key) => {\r\n if (!element.prototype[key]) {\r\n return element.prototype[key] = value;\r\n }\r\n });\r\n }\r\n\r\n}\r\n","const hideClassToken = 'ng-ui-scroll-hide';\r\n\r\nexport default class ElementRoutines {\r\n\r\n static addCSSRules() {\r\n const selector = '.' + hideClassToken;\r\n const rules = 'display: none';\r\n const sheet = document.styleSheets[0];\r\n let index;\r\n try {\r\n index = sheet.cssRules.length;\r\n } catch (err) {\r\n index = 0;\r\n }\r\n if('insertRule' in sheet) {\r\n sheet.insertRule(selector + '{' + rules + '}', index);\r\n }\r\n else if('addRule' in sheet) {\r\n sheet.addRule(selector, rules, index);\r\n }\r\n }\r\n\r\n constructor($injector, $q) {\r\n this.$animate = ($injector.has && $injector.has('$animate')) ? $injector.get('$animate') : null;\r\n this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;\r\n this.$q = $q;\r\n }\r\n\r\n hideElement(wrapper) {\r\n wrapper.element.addClass(hideClassToken);\r\n }\r\n\r\n showElement(wrapper) {\r\n wrapper.element.removeClass(hideClassToken);\r\n }\r\n\r\n insertElement(newElement, previousElement) {\r\n previousElement.after(newElement);\r\n return [];\r\n }\r\n\r\n removeElement(wrapper) {\r\n wrapper.element.remove();\r\n wrapper.scope.$destroy();\r\n return [];\r\n }\r\n\r\n insertElementAnimated(newElement, previousElement) {\r\n if (!this.$animate) {\r\n return this.insertElement(newElement, previousElement);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n // no need for parent - previous element is never null\r\n this.$animate.enter(newElement, null, previousElement, () => deferred.resolve());\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n // no need for parent - previous element is never null\r\n return [this.$animate.enter(newElement, null, previousElement)];\r\n }\r\n\r\n removeElementAnimated(wrapper) {\r\n if (!this.$animate) {\r\n return this.removeElement(wrapper);\r\n }\r\n\r\n if (this.isAngularVersionLessThen1_3) {\r\n const deferred = this.$q.defer();\r\n this.$animate.leave(wrapper.element, () => {\r\n wrapper.scope.$destroy();\r\n return deferred.resolve();\r\n });\r\n\r\n return [deferred.promise];\r\n }\r\n\r\n return [(this.$animate.leave(wrapper.element)).then(() => wrapper.scope.$destroy())];\r\n }\r\n}","export const OPERATIONS = {\r\n PREPEND: 'prepend',\r\n APPEND: 'append',\r\n INSERT: 'insert',\r\n REMOVE: 'remove',\r\n NONE: 'none'\r\n};\r\n","import { OPERATIONS } from './utils';\r\n\r\nexport default function ScrollBuffer(elementRoutines, bufferSize, startIndex) {\r\n const buffer = Object.create(Array.prototype);\r\n\r\n angular.extend(buffer, {\r\n size: bufferSize,\r\n\r\n reset(startIndex) {\r\n buffer.remove(0, buffer.length);\r\n buffer.eof = false;\r\n buffer.bof = false;\r\n buffer.first = startIndex;\r\n buffer.next = startIndex;\r\n buffer.minIndex = startIndex;\r\n buffer.maxIndex = startIndex;\r\n buffer.minIndexUser = null;\r\n buffer.maxIndexUser = null;\r\n },\r\n\r\n append(items) {\r\n items.forEach((item) => {\r\n ++buffer.next;\r\n buffer.insert(OPERATIONS.APPEND, item);\r\n });\r\n buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);\r\n },\r\n\r\n prepend(items, immutableTop) {\r\n items.reverse().forEach((item) => {\r\n if (immutableTop) {\r\n ++buffer.next;\r\n }\r\n else {\r\n --buffer.first;\r\n }\r\n buffer.insert(OPERATIONS.PREPEND, item);\r\n });\r\n buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);\r\n },\r\n\r\n /**\r\n * inserts wrapped element in the buffer\r\n * the first argument is either operation keyword (see below) or a number for operation 'insert'\r\n * for insert the number is the index for the buffer element the new one have to be inserted after\r\n * operations: 'append', 'prepend', 'insert', 'remove', 'none'\r\n */\r\n insert(operation, item, shiftTop) {\r\n const wrapper = {\r\n item: item\r\n };\r\n\r\n if (operation % 1 === 0) { // it is an insert\r\n wrapper.op = OPERATIONS.INSERT;\r\n buffer.splice(operation, 0, wrapper);\r\n if (shiftTop) {\r\n buffer.first--;\r\n }\r\n else {\r\n buffer.next++;\r\n }\r\n } else {\r\n wrapper.op = operation;\r\n switch (operation) {\r\n case OPERATIONS.APPEND:\r\n buffer.push(wrapper);\r\n break;\r\n case OPERATIONS.PREPEND:\r\n buffer.unshift(wrapper);\r\n break;\r\n }\r\n }\r\n },\r\n\r\n // removes elements from buffer\r\n remove(arg1, arg2) {\r\n if (angular.isNumber(arg1)) {\r\n // removes items from arg1 (including) through arg2 (excluding)\r\n for (let i = arg1; i < arg2; i++) {\r\n elementRoutines.removeElement(buffer[i]);\r\n }\r\n return buffer.splice(arg1, arg2 - arg1);\r\n }\r\n // removes single item (wrapper) from the buffer\r\n buffer.splice(buffer.indexOf(arg1), 1);\r\n if (arg1.shiftTop && buffer.first === this.getAbsMinIndex()) {\r\n this.incrementMinIndex();\r\n }\r\n else {\r\n this.decrementMaxIndex();\r\n }\r\n if (arg1.shiftTop) {\r\n buffer.first++;\r\n }\r\n else {\r\n buffer.next--;\r\n }\r\n if (!buffer.length) {\r\n buffer.minIndex = Math.min(buffer.maxIndex, buffer.minIndex);\r\n }\r\n\r\n return elementRoutines.removeElementAnimated(arg1);\r\n },\r\n\r\n incrementMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n if (buffer.minIndex > buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n return;\r\n }\r\n if (buffer.minIndex === buffer.minIndexUser) {\r\n buffer.minIndexUser++;\r\n }\r\n }\r\n buffer.minIndex++;\r\n },\r\n\r\n decrementMaxIndex() {\r\n if (buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {\r\n buffer.maxIndexUser--;\r\n }\r\n buffer.maxIndex--;\r\n },\r\n\r\n getAbsMinIndex() {\r\n if (buffer.minIndexUser !== null) {\r\n return Math.min(buffer.minIndexUser, buffer.minIndex);\r\n }\r\n return buffer.minIndex;\r\n },\r\n\r\n getAbsMaxIndex() {\r\n if (buffer.maxIndexUser !== null) {\r\n return Math.max(buffer.maxIndexUser, buffer.maxIndex);\r\n }\r\n return buffer.maxIndex;\r\n },\r\n\r\n effectiveHeight(elements) {\r\n if (!elements.length) {\r\n return 0;\r\n }\r\n let top = Number.MAX_VALUE;\r\n let bottom = Number.NEGATIVE_INFINITY;\r\n elements.forEach((wrapper) => {\r\n if (wrapper.element[0].offsetParent) {\r\n // element style is not display:none\r\n top = Math.min(top, wrapper.element.offset().top);\r\n bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));\r\n }\r\n });\r\n return Math.max(0, bottom - top);\r\n },\r\n\r\n getItems() {\r\n return buffer.filter(item => item.op === OPERATIONS.NONE);\r\n },\r\n\r\n getFirstItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[0].item;\r\n },\r\n\r\n getLastItem() {\r\n const list = buffer.getItems();\r\n if (!list.length) {\r\n return null;\r\n }\r\n return list[list.length - 1].item;\r\n }\r\n\r\n });\r\n\r\n buffer.reset(startIndex);\r\n\r\n return buffer;\r\n}\r\n","// Can't just extend the Array, due to Babel does not support built-in classes extending\r\n// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile\r\nclass CacheProto {\r\n add(item) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === item.scope.$index) {\r\n this[i].height = item.element.outerHeight();\r\n return;\r\n }\r\n }\r\n this.push({\r\n index: item.scope.$index,\r\n height: item.element.outerHeight()\r\n });\r\n this.sort((a, b) => ((a.index < b.index) ? -1 : ((a.index > b.index) ? 1 : 0)));\r\n }\r\n\r\n remove(argument, _shiftTop) {\r\n const index = argument % 1 === 0 ? argument : argument.scope.$index;\r\n const shiftTop = argument % 1 === 0 ? _shiftTop : argument.shiftTop;\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index === index) {\r\n this.splice(i, 1);\r\n break;\r\n }\r\n }\r\n if (!shiftTop) {\r\n for (let i = this.length - 1; i >= 0; i--) {\r\n if (this[i].index > index) {\r\n this[i].index--;\r\n }\r\n }\r\n }\r\n }\r\n\r\n clear() {\r\n this.length = 0;\r\n }\r\n}\r\n\r\nfunction Cache() {\r\n const instance = [];\r\n instance.push.apply(instance, arguments);\r\n Object.setPrototypeOf(instance, Cache.prototype);\r\n return instance;\r\n}\r\nCache.prototype = Object.create(Array.prototype);\r\nObject.getOwnPropertyNames(CacheProto.prototype).forEach(methodName =>\r\n Cache.prototype[methodName] = CacheProto.prototype[methodName]\r\n);\r\n\r\nfunction generateElement(template) {\r\n if (template.nodeType !== Node.ELEMENT_NODE) {\r\n throw new Error('ui-scroll directive requires an Element node for templating the view');\r\n }\r\n let element;\r\n switch (template.tagName.toLowerCase()) {\r\n case 'dl':\r\n throw new Error(`ui-scroll directive does not support <${template.tagName}> as a repeating tag: ${template.outerHTML}`);\r\n case 'tr':\r\n let table = angular.element('');\r\n element = table.find('tr');\r\n break;\r\n case 'li':\r\n element = angular.element('');\r\n break;\r\n default:\r\n element = angular.element('');\r\n }\r\n return element;\r\n}\r\n\r\nclass Padding {\r\n constructor(template) {\r\n this.element = generateElement(template);\r\n this.cache = new Cache();\r\n }\r\n\r\n height() {\r\n return this.element.height.apply(this.element, arguments);\r\n }\r\n}\r\n\r\nexport default Padding;","import Padding from './padding';\r\n\r\nexport default function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {\r\n let topPadding = null;\r\n let bottomPadding = null;\r\n const viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);\r\n const container = viewportController && viewportController.container ? viewportController.container : undefined;\r\n const scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;\r\n\r\n viewport.css({\r\n 'overflow-anchor': 'none',\r\n 'overflow-y': 'auto',\r\n 'display': 'block'\r\n });\r\n\r\n function bufferPadding() {\r\n return viewport.outerHeight() * padding; // some extra space to initiate preload\r\n }\r\n\r\n angular.extend(viewport, {\r\n getScope() {\r\n return scope;\r\n },\r\n\r\n createPaddingElements(template) {\r\n topPadding = new Padding(template);\r\n bottomPadding = new Padding(template);\r\n element.before(topPadding.element);\r\n element.after(bottomPadding.element);\r\n topPadding.height(0);\r\n bottomPadding.height(0);\r\n },\r\n\r\n applyContainerStyle() {\r\n if (!container) {\r\n return true;\r\n }\r\n if (container !== viewport) {\r\n viewport.css('height', window.getComputedStyle(container[0]).height);\r\n }\r\n return viewport.height() > 0;\r\n },\r\n\r\n bottomDataPos() {\r\n let scrollHeight = viewport[0].scrollHeight;\r\n scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;\r\n return scrollHeight - bottomPadding.height();\r\n },\r\n\r\n topDataPos() {\r\n return topPadding.height();\r\n },\r\n\r\n bottomVisiblePos() {\r\n return viewport.scrollTop() + viewport.outerHeight();\r\n },\r\n\r\n topVisiblePos() {\r\n return viewport.scrollTop();\r\n },\r\n\r\n insertElement(e, sibling) {\r\n return elementRoutines.insertElement(e, sibling || topPadding.element);\r\n },\r\n\r\n insertElementAnimated(e, sibling) {\r\n return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);\r\n },\r\n\r\n shouldLoadBottom() {\r\n return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();\r\n },\r\n\r\n clipBottom() {\r\n // clip the invisible items off the bottom\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();\r\n\r\n for (let i = buffer.length - 1; i >= 0; i--) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n bottomPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n buffer.eof = false;\r\n buffer.remove(buffer.length - overage, buffer.length);\r\n buffer.next -= overage;\r\n viewport.adjustPaddings();\r\n }\r\n },\r\n\r\n shouldLoadTop() {\r\n return !buffer.bof && (viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding());\r\n },\r\n\r\n clipTop() {\r\n // clip the invisible items off the top\r\n let overage = 0;\r\n let overageHeight = 0;\r\n let itemHeight = 0;\r\n let emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();\r\n\r\n for (let i = 0; i < buffer.length; i++) {\r\n itemHeight = buffer[i].element.outerHeight(true);\r\n if (overageHeight + itemHeight > emptySpaceHeight) {\r\n break;\r\n }\r\n topPadding.cache.add(buffer[i]);\r\n overageHeight += itemHeight;\r\n overage++;\r\n }\r\n\r\n if (overage > 0) {\r\n // we need to adjust top padding element before items are removed from top\r\n // to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom\r\n topPadding.height(topPadding.height() + overageHeight);\r\n buffer.bof = false;\r\n buffer.remove(0, overage);\r\n buffer.first += overage;\r\n }\r\n },\r\n\r\n adjustPaddings() {\r\n if (!buffer.length) {\r\n return;\r\n }\r\n\r\n // precise heights calculation based on items that are in buffer or that were in buffer once\r\n const visibleItemsHeight = buffer.reduce((summ, item) => summ + item.element.outerHeight(true), 0);\r\n\r\n let topPaddingHeight = 0, topCount = 0;\r\n topPadding.cache.forEach(item => {\r\n if (item.index < buffer.first) {\r\n topPaddingHeight += item.height;\r\n topCount++;\r\n }\r\n });\r\n\r\n let bottomPaddingHeight = 0, bottomCount = 0;\r\n bottomPadding.cache.forEach(item => {\r\n if (item.index >= buffer.next) {\r\n bottomPaddingHeight += item.height;\r\n bottomCount++;\r\n }\r\n });\r\n\r\n const totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;\r\n const averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length);\r\n\r\n // average heights calculation, items that have never been reached\r\n let adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;\r\n let adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;\r\n let topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;\r\n let bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0;\r\n\r\n // paddings combine adjustment\r\n topPadding.height(topPaddingHeight + topPaddingHeightAdd);\r\n bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);\r\n },\r\n\r\n onAfterMinIndexSet(topPaddingHeightOld) {\r\n // additional scrollTop adjustment in case of datasource.minIndex external set\r\n if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {\r\n let diff = topPadding.height() - topPaddingHeightOld;\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n while((diff -= viewport.scrollTop()) > 0) {\r\n bottomPadding.height(bottomPadding.height() + diff);\r\n viewport.scrollTop(viewport.scrollTop() + diff);\r\n }\r\n }\r\n },\r\n\r\n onAfterPrepend(updates) {\r\n if (!updates.prepended.length) {\r\n return;\r\n }\r\n const height = buffer.effectiveHeight(updates.prepended);\r\n const paddingHeight = topPadding.height() - height;\r\n if (paddingHeight >= 0) {\r\n topPadding.height(paddingHeight);\r\n return;\r\n }\r\n const position = viewport.scrollTop();\r\n const newPosition = position - paddingHeight;\r\n viewport.synthetic = { previous: position, next: newPosition };\r\n topPadding.height(0);\r\n viewport.scrollTop(newPosition);\r\n },\r\n\r\n resetTopPadding() {\r\n topPadding.height(0);\r\n topPadding.cache.clear();\r\n },\r\n\r\n resetBottomPadding() {\r\n bottomPadding.height(0);\r\n bottomPadding.cache.clear();\r\n },\r\n\r\n removeCacheItem(item, shiftTop) {\r\n topPadding.cache.remove(item, shiftTop);\r\n bottomPadding.cache.remove(item, shiftTop);\r\n },\r\n\r\n removeItem(item) {\r\n this.removeCacheItem(item);\r\n return buffer.remove(item);\r\n }\r\n });\r\n\r\n return viewport;\r\n}\r\n","import { OPERATIONS } from './utils';\r\n\r\nclass Adapter {\r\n\r\n constructor($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {\r\n this.$parse = $parse;\r\n this.$attr = $attr;\r\n this.viewport = viewport;\r\n this.buffer = buffer;\r\n\r\n this.doAdjust = doAdjust;\r\n this.reload = reload;\r\n\r\n this.isLoading = false;\r\n this.disabled = false;\r\n\r\n const viewportScope = viewport.getScope();\r\n this.startScope = viewportScope.$parent ? viewportScope : $scope;\r\n\r\n this.publicContext = {};\r\n this.assignAdapter($attr.adapter);\r\n this.generatePublicContext();\r\n }\r\n\r\n assignAdapter(adapterAttr) {\r\n if (!adapterAttr || !(adapterAttr = adapterAttr.replace(/^\\s+|\\s+$/gm, ''))) {\r\n return;\r\n }\r\n let adapterOnScope;\r\n\r\n try {\r\n this.$parse(adapterAttr).assign(this.startScope, {});\r\n adapterOnScope = this.$parse(adapterAttr)(this.startScope);\r\n }\r\n catch (error) {\r\n error.message = `Angular ui-scroll Adapter assignment exception.\\n` +\r\n `Can't parse \"${adapterAttr}\" expression.\\n` +\r\n error.message;\r\n throw error;\r\n }\r\n\r\n angular.extend(adapterOnScope, this.publicContext);\r\n this.publicContext = adapterOnScope;\r\n }\r\n\r\n generatePublicContext() {\r\n // these methods will be accessible out of ui-scroll via user defined adapter\r\n const publicMethods = ['reload', 'applyUpdates', 'append', 'prepend', 'isBOF', 'isEOF', 'isEmpty'];\r\n for (let i = publicMethods.length - 1; i >= 0; i--) {\r\n this.publicContext[publicMethods[i]] = this[publicMethods[i]].bind(this);\r\n }\r\n\r\n // these read-only props will be accessible out of ui-scroll via user defined adapter\r\n const publicProps = ['isLoading', 'topVisible', 'topVisibleElement', 'topVisibleScope', 'bottomVisible', 'bottomVisibleElement', 'bottomVisibleScope'];\r\n for (let i = publicProps.length - 1; i >= 0; i--) {\r\n let property, attr = this.$attr[publicProps[i]];\r\n Object.defineProperty(this, publicProps[i], {\r\n get: () => property,\r\n set: (value) => {\r\n property = value;\r\n this.publicContext[publicProps[i]] = value;\r\n if (attr) {\r\n this.$parse(attr).assign(this.startScope, value);\r\n }\r\n }\r\n });\r\n }\r\n\r\n // read-only immediately calculated public properties\r\n const publicPropsImmediate = ['bufferFirst', 'bufferLast', 'bufferLength'];\r\n for (let i = publicPropsImmediate.length - 1; i >= 0; i--) {\r\n Object.defineProperty(this.publicContext, publicPropsImmediate[i], {\r\n get: () => this[publicPropsImmediate[i]]\r\n });\r\n }\r\n\r\n // non-read-only public property\r\n Object.defineProperty(this.publicContext, 'disabled', {\r\n get: () => this.disabled,\r\n set: (value) => (!(this.disabled = value)) ? this.doAdjust() : null\r\n });\r\n }\r\n\r\n loading(value) {\r\n this.isLoading = value;\r\n }\r\n\r\n isBOF() {\r\n return this.buffer.bof;\r\n }\r\n\r\n isEOF() {\r\n return this.buffer.eof;\r\n }\r\n\r\n isEmpty() {\r\n return !this.buffer.length;\r\n }\r\n\r\n get bufferLength() {\r\n return this.buffer.getItems().length;\r\n }\r\n\r\n get bufferFirst() {\r\n return this.buffer.getFirstItem();\r\n }\r\n\r\n get bufferLast() {\r\n return this.buffer.getLastItem();\r\n }\r\n\r\n append(newItems) {\r\n this.buffer.append(newItems);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n prepend(newItems, options = {}) {\r\n this.buffer.prepend(newItems, options.immutableTop);\r\n this.doAdjust();\r\n this.viewport.clipTop();\r\n this.viewport.clipBottom();\r\n }\r\n\r\n applyUpdates(arg1, arg2, arg3) {\r\n if (typeof arg1 === 'function') {\r\n this.applyUpdatesFunc(arg1, arg2);\r\n } else {\r\n this.applyUpdatesIndex(arg1, arg2, arg3);\r\n }\r\n this.doAdjust();\r\n }\r\n\r\n applyUpdatesFunc(cb, options = {}) {\r\n this.buffer.slice(0).forEach((wrapper) => {\r\n // we need to do it on the buffer clone, because buffer content\r\n // may change as we iterate through\r\n this.applyUpdate(wrapper, cb(wrapper.item, wrapper.scope, wrapper.element), options);\r\n });\r\n }\r\n\r\n applyUpdatesIndex(index, newItems, options = {}) {\r\n if (index % 1 !== 0) {\r\n throw new Error('applyUpdates - ' + index + ' is not a valid index (should be an integer)');\r\n }\r\n const _index = index - this.buffer.first;\r\n\r\n // apply updates only within buffer\r\n if (_index >= 0 && _index < this.buffer.length) {\r\n this.applyUpdate(this.buffer[_index], newItems, options);\r\n }\r\n // out-of-buffer case: deletion may affect Paddings\r\n else if(index >= this.buffer.getAbsMinIndex() && index <= this.buffer.getAbsMaxIndex()) {\r\n if(angular.isArray(newItems) && !newItems.length) {\r\n this.viewport.removeCacheItem(index, !options.immutableTop && index === this.buffer.minIndex);\r\n if (!options.immutableTop && index === this.buffer.getAbsMinIndex()) {\r\n this.buffer.incrementMinIndex();\r\n }\r\n else {\r\n this.buffer.decrementMaxIndex();\r\n }\r\n }\r\n }\r\n }\r\n\r\n applyUpdate(wrapper, newItems, options = {}) {\r\n if (!angular.isArray(newItems)) {\r\n return;\r\n }\r\n let position = this.buffer.indexOf(wrapper);\r\n if (!newItems.reverse().some(newItem => newItem === wrapper.item)) {\r\n wrapper.op = OPERATIONS.REMOVE;\r\n // try to catch \"first\" edge case on remove\r\n if (!options.immutableTop && !newItems.length) {\r\n // this is the first item, or the previous one's part of the \"shift-top\" group\r\n if (\r\n (position === 0 && this.buffer.bof) ||\r\n (position !== 0 && this.buffer[position - 1].shiftTop)\r\n ) {\r\n wrapper.shiftTop = true;\r\n }\r\n }\r\n }\r\n newItems.forEach((newItem) => {\r\n if (newItem === wrapper.item) {\r\n position--;\r\n } else {\r\n // 3 parameter (shiftTop) is to catch \"first\" edge case on insert\r\n this.buffer.insert(position + 1, newItem, !options.immutableTop && position === -1);\r\n }\r\n });\r\n }\r\n\r\n calculateProperties() {\r\n let rowTop = null, topHeight = 0;\r\n let topDone = false, bottomDone = false;\r\n const length = this.buffer.length;\r\n\r\n for (let i = 0; i < length; i++) {\r\n const item = this.buffer[i];\r\n const itemTop = item.element.offset().top;\r\n\r\n if (rowTop !== itemTop) { // a new row condition\r\n const itemHeight = item.element.outerHeight(true);\r\n const top = this.viewport.topDataPos() + topHeight + itemHeight;\r\n\r\n if (!topDone && top > this.viewport.topVisiblePos()) {\r\n topDone = true;\r\n this['topVisible'] = item.item;\r\n this['topVisibleElement'] = item.element;\r\n this['topVisibleScope'] = item.scope;\r\n }\r\n if (!bottomDone && (top >= this.viewport.bottomVisiblePos() || (i === length - 1 && this.isEOF()))) {\r\n bottomDone = true;\r\n this['bottomVisible'] = item.item;\r\n this['bottomVisibleElement'] = item.element;\r\n this['bottomVisibleScope'] = item.scope;\r\n }\r\n topHeight += itemHeight;\r\n }\r\n rowTop = itemTop;\r\n\r\n if (topDone && bottomDone) {\r\n break;\r\n }\r\n }\r\n }\r\n\r\n}\r\n\r\nexport default Adapter;\r\n","import JQLiteExtras from './modules/jqLiteExtras';\r\nimport ElementRoutines from './modules/elementRoutines.js';\r\nimport ScrollBuffer from './modules/buffer.js';\r\nimport Viewport from './modules/viewport.js';\r\nimport Adapter from './modules/adapter.js';\r\nimport { OPERATIONS } from './modules/utils';\r\n\r\nangular.module('ui.scroll', [])\r\n\r\n .constant('JQLiteExtras', JQLiteExtras)\r\n .run(['JQLiteExtras', (JQLiteExtras) => {\r\n const elt = angular.element;\r\n !(window.jQuery && elt.fn && elt.fn.jquery) ? (new JQLiteExtras()).registerFor(elt) : null;\r\n ElementRoutines.addCSSRules();\r\n }])\r\n\r\n .directive('uiScrollViewport', function () {\r\n return {\r\n restrict: 'A',\r\n controller: [\r\n '$scope',\r\n '$element',\r\n function (scope, element) {\r\n this.container = element;\r\n this.viewport = element;\r\n this.scope = scope;\r\n\r\n angular.forEach(element.children(), child => {\r\n if (child.tagName.toLowerCase() === 'tbody') {\r\n this.viewport = angular.element(child);\r\n }\r\n });\r\n\r\n return this;\r\n }\r\n ]\r\n };\r\n })\r\n\r\n .directive('uiScroll', [\r\n '$log',\r\n '$injector',\r\n '$rootScope',\r\n '$timeout',\r\n '$interval',\r\n '$q',\r\n '$parse',\r\n function (console, $injector, $rootScope, $timeout, $interval, $q, $parse) {\r\n\r\n return {\r\n require: ['?^uiScrollViewport'],\r\n restrict: 'A',\r\n transclude: 'element',\r\n priority: 1000,\r\n terminal: true,\r\n link: link\r\n };\r\n\r\n function link($scope, element, $attr, controllers, linker) {\r\n const match = $attr.uiScroll.match(/^\\s*(\\w+)\\s+in\\s+([(\\w|\\$)\\.]+)\\s*$/);\r\n if (!match) {\r\n throw new Error('Expected uiScroll in form of \\'_item_ in _datasource_\\' but got \\'' + $attr.uiScroll + '\\'');\r\n }\r\n\r\n function parseNumber(value, defaultValue, isFloat) {\r\n if (!isFloat) {\r\n value = value === null ? defaultValue : Math.floor(value);\r\n }\r\n return isNaN(value) ? defaultValue : value;\r\n }\r\n\r\n function parseNumericAttr(value, defaultValue, isFloat) {\r\n const result = $parse(value)($scope);\r\n return parseNumber(result, defaultValue, isFloat);\r\n }\r\n\r\n function parseBooleanAttr(value, defaultValue) {\r\n const result = $parse(value)($scope);\r\n return typeof result === 'boolean' ? result : defaultValue;\r\n }\r\n\r\n const BUFFER_MIN = 3;\r\n const BUFFER_DEFAULT = 10;\r\n const PADDING_MIN = 0.3;\r\n const PADDING_DEFAULT = 0.5;\r\n const HANDLE_INERTIA_DEFAULT = true;\r\n const START_INDEX_DEFAULT = 1;\r\n const MAX_VIEWPORT_DELAY = 500;\r\n const VIEWPORT_POLLING_INTERVAL = 50;\r\n\r\n let datasource = null;\r\n const itemName = match[1];\r\n const datasourceName = match[2];\r\n const viewportController = controllers[0];\r\n const bufferSize = Math.max(BUFFER_MIN, parseNumericAttr($attr.bufferSize, BUFFER_DEFAULT));\r\n const padding = Math.max(PADDING_MIN, parseNumericAttr($attr.padding, PADDING_DEFAULT, true));\r\n const handleInertia = parseBooleanAttr($attr.handleInertia, HANDLE_INERTIA_DEFAULT);\r\n let startIndex = parseNumericAttr($attr.startIndex, START_INDEX_DEFAULT);\r\n let ridActual = 0; // current data revision id\r\n let pending = [];\r\n\r\n const elementRoutines = new ElementRoutines($injector, $q);\r\n const buffer = new ScrollBuffer(elementRoutines, bufferSize, startIndex);\r\n const viewport = new Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding);\r\n const adapter = new Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload);\r\n\r\n if (viewportController) {\r\n viewportController.adapter = adapter;\r\n }\r\n\r\n const isDatasourceValid = () =>\r\n Object.prototype.toString.call(datasource) === '[object Object]' && typeof datasource.get === 'function';\r\n\r\n datasource = $parse(datasourceName)($scope); // try to get datasource on scope\r\n if (!isDatasourceValid()) {\r\n datasource = $injector.get(datasourceName); // try to inject datasource as service\r\n if (!isDatasourceValid()) {\r\n throw new Error(datasourceName + ' is not a valid datasource');\r\n }\r\n }\r\n\r\n let onRenderHandlers = [];\r\n function onRenderHandlersRunner() {\r\n onRenderHandlers.forEach(handler => handler.run());\r\n onRenderHandlers = [];\r\n }\r\n function persistDatasourceIndex(datasource, propName) {\r\n let getter;\r\n // need to postpone min/maxIndexUser processing if the view is empty\r\n if (angular.isNumber(datasource[propName])) {\r\n getter = datasource[propName];\r\n if (angular.isNumber(getter)) {\r\n onRenderHandlers = onRenderHandlers.filter(handler => handler.id !== propName);\r\n onRenderHandlers.push({\r\n id: propName,\r\n run: () => datasource[propName] = getter\r\n });\r\n }\r\n }\r\n }\r\n\r\n function defineDatasourceIndex(datasource, propName, propUserName) {\r\n const descriptor = Object.getOwnPropertyDescriptor(datasource, propName);\r\n if (descriptor && (descriptor.set || descriptor.get)) {\r\n return;\r\n }\r\n let getter;\r\n persistDatasourceIndex(datasource, propName);\r\n Object.defineProperty(datasource, propName, {\r\n set: (value) => {\r\n getter = value;\r\n if (pending.length && !buffer.length) {\r\n persistDatasourceIndex(datasource, propName);\r\n return;\r\n }\r\n buffer[propUserName] = value;\r\n const topPaddingHeightOld = viewport.topDataPos();\r\n viewport.adjustPaddings();\r\n if (propName === 'minIndex') {\r\n viewport.onAfterMinIndexSet(topPaddingHeightOld);\r\n }\r\n },\r\n get: () => getter\r\n });\r\n }\r\n\r\n defineDatasourceIndex(datasource, 'minIndex', 'minIndexUser');\r\n defineDatasourceIndex(datasource, 'maxIndex', 'maxIndexUser');\r\n\r\n const fetchNext = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.next, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.next,\r\n append: buffer.length ? buffer[buffer.length - 1].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const fetchPrevious = (datasource.get.length !== 2) ?\r\n (success) => datasource.get(buffer.first - bufferSize, bufferSize, success) :\r\n (success) => {\r\n datasource.get({\r\n index: buffer.first - bufferSize,\r\n prepend: buffer.length ? buffer[0].item : void 0,\r\n count: bufferSize\r\n }, success);\r\n };\r\n\r\n const initialize = () => {\r\n let tryCount = 0;\r\n if (!viewport.applyContainerStyle()) {\r\n const timer = $interval(() => {\r\n tryCount++;\r\n if (viewport.applyContainerStyle()) {\r\n $interval.cancel(timer);\r\n doAdjust();\r\n }\r\n if (tryCount * VIEWPORT_POLLING_INTERVAL >= MAX_VIEWPORT_DELAY) {\r\n $interval.cancel(timer);\r\n throw Error(`ui-scroll directive requires a viewport with non-zero height in ${MAX_VIEWPORT_DELAY}ms`);\r\n }\r\n }, VIEWPORT_POLLING_INTERVAL);\r\n }\r\n else {\r\n doAdjust();\r\n }\r\n };\r\n\r\n /**\r\n * Build padding elements\r\n *\r\n * Calling linker is the only way I found to get access to the tag name of the template\r\n * to prevent the directive scope from pollution a new scope is created and destroyed\r\n * right after the builder creation is completed\r\n */\r\n linker((clone, scope) => {\r\n viewport.createPaddingElements(clone[0]);\r\n // we do not include the clone in the DOM. It means that the nested directives will not\r\n // be able to reach the parent directives, but in this case it is intentional because we\r\n // created the clone to access the template tag name\r\n scope.$destroy();\r\n clone.remove();\r\n });\r\n\r\n $scope.$on('$destroy', () => {\r\n unbindEvents();\r\n viewport.off('mousewheel', wheelHandler);\r\n });\r\n\r\n viewport.on('mousewheel', wheelHandler);\r\n\r\n initialize();\r\n\r\n /* Private function definitions */\r\n\r\n function isInvalid(rid) {\r\n return (rid && rid !== ridActual) || $scope.$$destroyed;\r\n }\r\n\r\n function bindEvents() {\r\n viewport.on('resize', resizeAndScrollHandler);\r\n viewport.on('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function unbindEvents() {\r\n viewport.off('resize', resizeAndScrollHandler);\r\n viewport.off('scroll', resizeAndScrollHandler);\r\n }\r\n\r\n function reload() {\r\n unbindEvents();\r\n viewport.resetTopPadding();\r\n viewport.resetBottomPadding();\r\n if (arguments.length) {\r\n startIndex = parseNumber(arguments[0], START_INDEX_DEFAULT, false);\r\n }\r\n buffer.reset(startIndex);\r\n persistDatasourceIndex(datasource, 'minIndex');\r\n persistDatasourceIndex(datasource, 'maxIndex');\r\n doAdjust();\r\n }\r\n\r\n function isElementVisible(wrapper) {\r\n return wrapper.element.height() && wrapper.element[0].offsetParent;\r\n }\r\n\r\n function visibilityWatcher(wrapper) {\r\n if (isElementVisible(wrapper)) {\r\n buffer.forEach((item) => {\r\n if (typeof item.unregisterVisibilityWatcher === 'function') {\r\n item.unregisterVisibilityWatcher();\r\n delete item.unregisterVisibilityWatcher;\r\n }\r\n });\r\n if (!pending.length) {\r\n $timeout(() => doAdjust());\r\n }\r\n }\r\n }\r\n\r\n function insertWrapperContent(wrapper, insertAfter) {\r\n createElement(wrapper, insertAfter, viewport.insertElement);\r\n if (!isElementVisible(wrapper)) {\r\n wrapper.unregisterVisibilityWatcher = wrapper.scope.$watch(() => visibilityWatcher(wrapper));\r\n }\r\n elementRoutines.hideElement(wrapper); // hide inserted elements before data binding\r\n }\r\n\r\n function createElement(wrapper, insertAfter, insertElement) {\r\n let promises = null;\r\n const sibling = (insertAfter > 0) ? buffer[insertAfter - 1].element : undefined;\r\n linker((clone, scope) => {\r\n promises = insertElement(clone, sibling);\r\n wrapper.element = clone;\r\n wrapper.scope = scope;\r\n scope[itemName] = wrapper.item;\r\n });\r\n // ui-scroll-grid apply\r\n if (adapter.transform) {\r\n const tdInitializer = wrapper.scope.uiScrollTdInitializer;\r\n if (tdInitializer && tdInitializer.linking) {\r\n adapter.transform(wrapper.scope, wrapper.element);\r\n } else {\r\n wrapper.scope.uiScrollTdInitializer = {\r\n onLink: () => adapter.transform(wrapper.scope, wrapper.element),\r\n scope: wrapper.scope\r\n };\r\n }\r\n }\r\n return promises;\r\n }\r\n\r\n function updateDOM() {\r\n let promises = [];\r\n const toBePrepended = [];\r\n const toBeRemoved = [];\r\n const inserted = [];\r\n\r\n buffer.forEach((wrapper, i) => {\r\n switch (wrapper.op) {\r\n case OPERATIONS.PREPEND:\r\n toBePrepended.unshift(wrapper);\r\n break;\r\n case OPERATIONS.APPEND:\r\n insertWrapperContent(wrapper, i);\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.INSERT:\r\n promises = promises.concat(createElement(wrapper, i, viewport.insertElementAnimated));\r\n wrapper.op = OPERATIONS.NONE;\r\n inserted.push(wrapper);\r\n break;\r\n case OPERATIONS.REMOVE:\r\n toBeRemoved.push(wrapper);\r\n }\r\n });\r\n\r\n toBeRemoved.forEach((wrapper) => promises = promises.concat(viewport.removeItem(wrapper)));\r\n\r\n if (toBePrepended.length)\r\n toBePrepended.forEach((wrapper) => {\r\n insertWrapperContent(wrapper);\r\n wrapper.op = OPERATIONS.NONE;\r\n });\r\n\r\n buffer.forEach((item, i) => item.scope.$index = buffer.first + i);\r\n\r\n return {\r\n prepended: toBePrepended,\r\n removed: toBeRemoved,\r\n inserted: inserted,\r\n animated: promises\r\n };\r\n\r\n }\r\n\r\n function updatePaddings(rid, updates) {\r\n // schedule another doAdjust after animation completion\r\n if (updates.animated.length) {\r\n $q.all(updates.animated).then(() => {\r\n viewport.adjustPaddings();\r\n doAdjust(rid);\r\n });\r\n } else {\r\n viewport.adjustPaddings();\r\n }\r\n }\r\n\r\n function enqueueFetch(rid, updates) {\r\n if (viewport.shouldLoadBottom()) {\r\n if (!updates || buffer.effectiveHeight(updates.inserted) > 0) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n if (pending.push(true) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n } else if (viewport.shouldLoadTop()) {\r\n if ((!updates || buffer.effectiveHeight(updates.prepended) > 0) || pending[0]) {\r\n // this means that at least one item appended in the last batch has height > 0\r\n // pending[0] = true means that previous fetch was appending. We need to force at least one prepend\r\n // BTW there will always be at least 1 element in the pending array because bottom is fetched first\r\n if (pending.push(false) === 1) {\r\n adapter.loading(true);\r\n fetch(rid);\r\n }\r\n }\r\n }\r\n }\r\n\r\n function processUpdates() {\r\n const updates = updateDOM();\r\n\r\n // We need the item bindings to be processed before we can do adjustments\r\n !$scope.$$phase && !$rootScope.$$phase && $scope.$digest();\r\n\r\n updates.inserted.forEach(w => elementRoutines.showElement(w));\r\n updates.prepended.forEach(w => elementRoutines.showElement(w));\r\n return updates;\r\n }\r\n\r\n function doAdjust(rid) {\r\n if (!rid) { // dismiss pending requests\r\n pending = [];\r\n rid = ++ridActual;\r\n }\r\n\r\n const updates = processUpdates();\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n enqueueFetch(rid);\r\n\r\n if (!pending.length) {\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function doAdjustAfterFetch(rid) {\r\n const updates = processUpdates();\r\n\r\n viewport.onAfterPrepend(updates);\r\n\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n updatePaddings(rid, updates);\r\n onRenderHandlersRunner();\r\n enqueueFetch(rid, updates);\r\n pending.shift();\r\n\r\n if (pending.length)\r\n fetch(rid);\r\n else {\r\n adapter.loading(false);\r\n bindEvents();\r\n adapter.calculateProperties();\r\n }\r\n }\r\n\r\n function fetch(rid) {\r\n if (pending[0]) {// scrolling down\r\n if (buffer.length && !viewport.shouldLoadBottom()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n fetchNext((result) => {\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n if (result.length < bufferSize) {\r\n buffer.eof = true;\r\n }\r\n\r\n if (result.length > 0) {\r\n viewport.clipTop();\r\n buffer.append(result);\r\n }\r\n\r\n doAdjustAfterFetch(rid);\r\n });\r\n }\r\n } else { // scrolling up\r\n if (buffer.length && !viewport.shouldLoadTop()) {\r\n doAdjustAfterFetch(rid);\r\n } else {\r\n fetchPrevious((result) => {\r\n if (isInvalid(rid)) {\r\n return;\r\n }\r\n\r\n if (result.length < bufferSize) {\r\n buffer.bof = true;\r\n // log 'bof is reached'\r\n }\r\n\r\n if (result.length > 0) {\r\n if (buffer.length) {\r\n viewport.clipBottom();\r\n }\r\n buffer.prepend(result);\r\n }\r\n\r\n doAdjustAfterFetch(rid);\r\n });\r\n }\r\n }\r\n }\r\n\r\n function fixInertia() {\r\n if (!viewport.synthetic) {\r\n return;\r\n }\r\n const oldPosition = viewport.synthetic.previous;\r\n const newPosition = viewport.synthetic.next;\r\n if (viewport.scrollTop() !== newPosition) {\r\n requestAnimationFrame(() => {\r\n const position = viewport.scrollTop();\r\n const diff = oldPosition - position;\r\n if (diff > 0) { // inertia over synthetic\r\n viewport.scrollTop(newPosition - diff);\r\n } else {\r\n viewport.scrollTop(newPosition);\r\n }\r\n viewport.synthetic = null;\r\n });\r\n return true;\r\n }\r\n viewport.synthetic = null;\r\n }\r\n\r\n function resizeAndScrollHandler() {\r\n if (handleInertia && fixInertia()) {\r\n return;\r\n }\r\n if (!$rootScope.$$phase && !adapter.isLoading && !adapter.disabled) {\r\n\r\n enqueueFetch(ridActual);\r\n\r\n if (pending.length) {\r\n unbindEvents();\r\n } else {\r\n adapter.calculateProperties();\r\n !$scope.$$phase && $scope.$digest();\r\n }\r\n }\r\n }\r\n\r\n function wheelHandler(event) {\r\n if (!adapter.disabled) {\r\n const scrollTop = viewport[0].scrollTop;\r\n const yMax = viewport[0].scrollHeight - viewport[0].clientHeight;\r\n\r\n if ((scrollTop === 0 && !buffer.bof) || (scrollTop === yMax && !buffer.eof)) {\r\n event.preventDefault();\r\n }\r\n }\r\n }\r\n }\r\n\r\n }\r\n ]);\r\n"],"names":["JQLiteExtras","_classCallCheck","key","value","element","convertToPx","css","getStyle","isWindow","scrollTo","self","direction","elem","_top$left$direction","_slicedToArray","top","left","method","prop","preserve","isValueDefined","call","document","documentElement","getWidthHeight","measure","result","measurements","base","borderA","borderB","computedMarginA","computedMarginB","computedStyle","dirA","dirB","paddingA","paddingB","height","width","padding","border","margin","_width$height$measure","offsetWidth","offsetHeight","getMeasurements","outer","outerfull","style","parseFloat","angular","prototype","name","this","nodeType","obj","location","alert","setInterval","window","getComputedStyle","currentStyle","rs","rsLeft","RegExp","source","test","runtimeStyle","pixelLeft","forEach","before","newElem","children","i","j","parent","ref","contents","prepend","length","after","Error","outerHTML","isNumber","outerHeight","option","outerWidth","offset","docElem","win","box","doc","ownerDocument","arguments","undefined","getBoundingClientRect","defaultView","parentWindow","pageYOffset","scrollTop","clientTop","pageXOffset","scrollLeft","clientLeft","hideClassToken","ElementRoutines","$injector","$q","$animate","has","get","isAngularVersionLessThen1_3","version","major","minor","index","selector","rules","sheet","styleSheets","cssRules","err","insertRule","addRule","wrapper","addClass","removeClass","newElement","previousElement","remove","scope","$destroy","insertElement","deferred","defer","enter","resolve","promise","removeElement","leave","then","OPERATIONS","PREPEND","APPEND","INSERT","REMOVE","NONE","ScrollBuffer","elementRoutines","bufferSize","startIndex","buffer","Object","create","Array","extend","size","reset","eof","bof","first","next","minIndex","maxIndex","minIndexUser","maxIndexUser","append","items","item","insert","Math","max","immutableTop","reverse","min","operation","shiftTop","op","splice","push","unshift","arg1","arg2","indexOf","getAbsMinIndex","incrementMinIndex","decrementMaxIndex","removeElementAnimated","getAbsMaxIndex","effectiveHeight","elements","Number","MAX_VALUE","bottom","NEGATIVE_INFINITY","offsetParent","getItems","filter","getFirstItem","list","getLastItem","CacheProto","_createClass","$index","sort","a","b","argument","_shiftTop","Cache","instance","apply","setPrototypeOf","getOwnPropertyNames","methodName","Padding","template","Node","ELEMENT_NODE","tagName","toLowerCase","concat","find","generateElement","cache","Viewport","viewportController","$rootScope","topPadding","bottomPadding","viewport","container","bufferPadding","getScope","createPaddingElements","applyContainerStyle","bottomDataPos","scrollHeight","topDataPos","bottomVisiblePos","topVisiblePos","e","sibling","insertElementAnimated","shouldLoadBottom","clipBottom","overage","overageHeight","itemHeight","emptySpaceHeight","add","adjustPaddings","shouldLoadTop","clipTop","visibleItemsHeight","reduce","summ","topPaddingHeight","topCount","bottomPaddingHeight","bottomCount","averageItemHeight","adjustTopPadding","adjustBottomPadding","topPaddingHeightAdd","bottomPaddingHeightAdd","onAfterMinIndexSet","topPaddingHeightOld","diff","onAfterPrepend","updates","prepended","paddingHeight","position","newPosition","synthetic","previous","resetTopPadding","clear","resetBottomPadding","removeCacheItem","removeItem","Adapter","$scope","$parse","$attr","doAdjust","reload","isLoading","disabled","viewportScope","startScope","$parent","publicContext","assignAdapter","adapter","generatePublicContext","adapterAttr","replace","adapterOnScope","assign","error","message","_this","publicMethods","bind","publicProps","_loop","_i","property","attr","defineProperty","set","publicPropsImmediate","_loop2","_i2","newItems","options","arg3","applyUpdatesFunc","applyUpdatesIndex","cb","_this2","slice","applyUpdate","_index","isArray","_this3","some","newItem","rowTop","topHeight","topDone","bottomDone","itemTop","isEOF","module","constant","run","elt","jQuery","fn","jquery","registerFor","addCSSRules","directive","restrict","controller","child","console","$timeout","$interval","require","transclude","priority","terminal","link","controllers","linker","match","uiScroll","parseNumber","defaultValue","isFloat","floor","isNaN","parseNumericAttr","datasource","itemName","datasourceName","handleInertia","ridActual","pending","unbindEvents","persistDatasourceIndex","isDatasourceValid","toString","onRenderHandlers","propName","getter","handler","id","defineDatasourceIndex","propUserName","descriptor","getOwnPropertyDescriptor","fetchNext","success","count","fetchPrevious","isInvalid","rid","$$destroyed","off","resizeAndScrollHandler","isElementVisible","insertWrapperContent","insertAfter","createElement","unregisterVisibilityWatcher","$watch","visibilityWatcher","hideElement","promises","clone","transform","tdInitializer","uiScrollTdInitializer","linking","onLink","updatePaddings","animated","all","enqueueFetch","inserted","loading"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\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index a3ca3f0..919b501 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
{
"name": "angular-ui-scroll",
- "version": "1.9.0",
+ "version": "1.9.1",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "angular-ui-scroll",
- "version": "1.9.0",
+ "version": "1.9.1",
"license": "MIT",
"devDependencies": {
"@babel/core": "^7.21.4",
@@ -8511,4 +8511,4 @@
}
}
}
-}
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 966ad9a..1fe64f4 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
{
"name": "angular-ui-scroll",
"description": "AngularJS virtual scrolling module",
- "version": "1.9.0",
+ "version": "1.9.1",
"src": "./src/",
"public": "./dist/",
"main": "./dist/ui-scroll.js",
diff --git a/webpack.config.js b/webpack.config.js
index 77befc4..9a4ca43 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -135,6 +135,8 @@ module.exports = {
mode: ENV,
+ target: ['web', 'es5'],
+
optimization: configEnv.optimization,
module: {