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ui-scroll.js
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/*!
* angular-ui-scroll
* https://github.com/angular-ui/ui-scroll
* Version: 1.7.3 -- 2019-06-17T15:00:42.121Z
* License: MIT
*/
/******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ }
/******/ };
/******/
/******/ // define __esModule on exports
/******/ __webpack_require__.r = function(exports) {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/
/******/ // create a fake namespace object
/******/ // mode & 1: value is a module id, require it
/******/ // mode & 2: merge all properties of value into the ns
/******/ // mode & 4: return value when already ns object
/******/ // mode & 8|1: behave like require
/******/ __webpack_require__.t = function(value, mode) {
/******/ if(mode & 1) value = __webpack_require__(value);
/******/ if(mode & 8) return value;
/******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ var ns = Object.create(null);
/******/ __webpack_require__.r(ns);
/******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ return ns;
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __webpack_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __webpack_require__.d(getter, 'a', getter);
/******/ return getter;
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/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
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/* 0 */,
/* 1 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
// CONCATENATED MODULE: ./src/modules/jqLiteExtras.js
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }
function _iterableToArrayLimit(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
/*!
globals: angular, window
List of used element methods available in JQuery but not in JQuery Lite
element.before(elem)
element.height()
element.outerHeight(true)
element.height(value) = only for Top/Bottom padding elements
element.scrollTop()
element.scrollTop(value)
*/
var jqLiteExtras_JQLiteExtras =
/*#__PURE__*/
function () {
function JQLiteExtras() {
_classCallCheck(this, JQLiteExtras);
}
_createClass(JQLiteExtras, [{
key: "registerFor",
value: function registerFor(element) {
var convertToPx, css, getStyle, isWindow; // angular implementation blows up if elem is the window
css = angular.element.prototype.css;
element.prototype.css = function (name, value) {
var self = this;
var elem = self[0];
if (!(!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style)) {
return css.call(self, name, value);
}
}; // as defined in angularjs v1.0.5
isWindow = function isWindow(obj) {
return obj && obj.document && obj.location && obj.alert && obj.setInterval;
};
function scrollTo(self, direction, value) {
var elem = self[0];
var _top$left$direction = _slicedToArray({
top: ['scrollTop', 'pageYOffset', 'scrollLeft'],
left: ['scrollLeft', 'pageXOffset', 'scrollTop']
}[direction], 3),
method = _top$left$direction[0],
prop = _top$left$direction[1],
preserve = _top$left$direction[2];
var isValueDefined = typeof value !== 'undefined';
if (isWindow(elem)) {
if (isValueDefined) {
return elem.scrollTo(self[preserve].call(self), value);
}
return prop in elem ? elem[prop] : elem.document.documentElement[method];
} else {
if (isValueDefined) {
elem[method] = value;
}
return elem[method];
}
}
if (window.getComputedStyle) {
getStyle = function getStyle(elem) {
return window.getComputedStyle(elem, null);
};
convertToPx = function convertToPx(elem, value) {
return parseFloat(value);
};
} else {
getStyle = function getStyle(elem) {
return elem.currentStyle;
};
convertToPx = function convertToPx(elem, value) {
var left, result, rs, rsLeft, style;
var core_pnum = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source;
var rnumnonpx = new RegExp('^(' + core_pnum + ')(?!px)[a-z%]+$', 'i');
if (!rnumnonpx.test(value)) {
return parseFloat(value);
} // ported from JQuery
style = elem.style;
left = style.left;
rs = elem.runtimeStyle;
rsLeft = rs && rs.left;
if (rs) {
rs.left = style.left;
} // put in the new values to get a computed style out
style.left = value;
result = style.pixelLeft;
style.left = left;
if (rsLeft) {
rs.left = rsLeft;
}
return result;
};
}
function getMeasurements(elem, measure) {
var base, borderA, borderB, computedMarginA, computedMarginB, computedStyle, dirA, dirB, marginA, marginB, paddingA, paddingB;
if (isWindow(elem)) {
base = document.documentElement[{
height: 'clientHeight',
width: 'clientWidth'
}[measure]];
return {
base: base,
padding: 0,
border: 0,
margin: 0
};
} // Start with offset property
var _width$height$measure = _slicedToArray({
width: [elem.offsetWidth, 'Left', 'Right'],
height: [elem.offsetHeight, 'Top', 'Bottom']
}[measure], 3);
base = _width$height$measure[0];
dirA = _width$height$measure[1];
dirB = _width$height$measure[2];
computedStyle = getStyle(elem);
paddingA = convertToPx(elem, computedStyle['padding' + dirA]) || 0;
paddingB = convertToPx(elem, computedStyle['padding' + dirB]) || 0;
borderA = convertToPx(elem, computedStyle['border' + dirA + 'Width']) || 0;
borderB = convertToPx(elem, computedStyle['border' + dirB + 'Width']) || 0;
computedMarginA = computedStyle['margin' + dirA];
computedMarginB = computedStyle['margin' + dirB]; // I do not care for width for now, so this hack is irrelevant
// if ( !supportsPercentMargin )
// computedMarginA = hackPercentMargin( elem, computedStyle, computedMarginA )
// computedMarginB = hackPercentMargin( elem, computedStyle, computedMarginB )
marginA = convertToPx(elem, computedMarginA) || 0;
marginB = convertToPx(elem, computedMarginB) || 0;
return {
base: base,
padding: paddingA + paddingB,
border: borderA + borderB,
margin: marginA + marginB
};
}
function getWidthHeight(elem, direction, measure) {
var computedStyle, result;
var measurements = getMeasurements(elem, direction);
if (measurements.base > 0) {
return {
base: measurements.base - measurements.padding - measurements.border,
outer: measurements.base,
outerfull: measurements.base + measurements.margin
}[measure];
} // Fall back to computed then uncomputed css if necessary
computedStyle = getStyle(elem);
result = computedStyle[direction];
if (result < 0 || result === null) {
result = elem.style[direction] || 0;
} // Normalize "", auto, and prepare for extra
result = parseFloat(result) || 0;
return {
base: result - measurements.padding - measurements.border,
outer: result,
outerfull: result + measurements.padding + measurements.border + measurements.margin
}[measure];
} // define missing methods
return angular.forEach({
before: function before(newElem) {
var children, elem, i, j, parent, ref, self;
self = this;
elem = self[0];
parent = self.parent();
children = parent.contents();
if (children[0] === elem) {
return parent.prepend(newElem);
} else {
for (i = j = 1, ref = children.length - 1; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {
if (children[i] === elem) {
angular.element(children[i - 1]).after(newElem);
return;
}
}
throw new Error('invalid DOM structure ' + elem.outerHTML);
}
},
height: function height(value) {
var self;
self = this;
if (typeof value !== 'undefined') {
if (angular.isNumber(value)) {
value = value + 'px';
}
return css.call(self, 'height', value);
} else {
return getWidthHeight(this[0], 'height', 'base');
}
},
outerHeight: function outerHeight(option) {
return getWidthHeight(this[0], 'height', option ? 'outerfull' : 'outer');
},
outerWidth: function outerWidth(option) {
return getWidthHeight(this[0], 'width', option ? 'outerfull' : 'outer');
},
/*
The offset setter method is not implemented
*/
offset: function offset(value) {
var docElem, win;
var self = this;
var box = {
top: 0,
left: 0
};
var elem = self[0];
var doc = elem && elem.ownerDocument;
if (arguments.length) {
if (value === undefined) {
return self;
} // TODO: implement setter
throw new Error('offset setter method is not implemented');
}
if (!doc) {
return;
}
docElem = doc.documentElement; // TODO: Make sure it's not a disconnected DOM node
if (elem.getBoundingClientRect != null) {
box = elem.getBoundingClientRect();
}
win = doc.defaultView || doc.parentWindow;
return {
top: box.top + (win.pageYOffset || docElem.scrollTop) - (docElem.clientTop || 0),
left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)
};
},
scrollTop: function scrollTop(value) {
return scrollTo(this, 'top', value);
},
scrollLeft: function scrollLeft(value) {
return scrollTo(this, 'left', value);
}
}, function (value, key) {
if (!element.prototype[key]) {
return element.prototype[key] = value;
}
});
}
}]);
return JQLiteExtras;
}();
// CONCATENATED MODULE: ./src/modules/elementRoutines.js
function elementRoutines_classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function elementRoutines_defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function elementRoutines_createClass(Constructor, protoProps, staticProps) { if (protoProps) elementRoutines_defineProperties(Constructor.prototype, protoProps); if (staticProps) elementRoutines_defineProperties(Constructor, staticProps); return Constructor; }
var hideClassToken = 'ng-ui-scroll-hide';
var ElementRoutines =
/*#__PURE__*/
function () {
elementRoutines_createClass(ElementRoutines, null, [{
key: "addCSSRules",
value: function addCSSRules() {
var selector = '.' + hideClassToken;
var rules = 'display: none';
var sheet = document.styleSheets[0];
var index;
try {
index = sheet.cssRules.length;
} catch (err) {
index = 0;
}
if ('insertRule' in sheet) {
sheet.insertRule(selector + '{' + rules + '}', index);
} else if ('addRule' in sheet) {
sheet.addRule(selector, rules, index);
}
}
}]);
function ElementRoutines($injector, $q) {
elementRoutines_classCallCheck(this, ElementRoutines);
this.$animate = $injector.has && $injector.has('$animate') ? $injector.get('$animate') : null;
this.isAngularVersionLessThen1_3 = angular.version.major === 1 && angular.version.minor < 3;
this.$q = $q;
}
elementRoutines_createClass(ElementRoutines, [{
key: "hideElement",
value: function hideElement(wrapper) {
wrapper.element.addClass(hideClassToken);
}
}, {
key: "showElement",
value: function showElement(wrapper) {
wrapper.element.removeClass(hideClassToken);
}
}, {
key: "insertElement",
value: function insertElement(newElement, previousElement) {
previousElement.after(newElement);
return [];
}
}, {
key: "removeElement",
value: function removeElement(wrapper) {
wrapper.element.remove();
wrapper.scope.$destroy();
return [];
}
}, {
key: "insertElementAnimated",
value: function insertElementAnimated(newElement, previousElement) {
if (!this.$animate) {
return this.insertElement(newElement, previousElement);
}
if (this.isAngularVersionLessThen1_3) {
var deferred = this.$q.defer(); // no need for parent - previous element is never null
this.$animate.enter(newElement, null, previousElement, function () {
return deferred.resolve();
});
return [deferred.promise];
} // no need for parent - previous element is never null
return [this.$animate.enter(newElement, null, previousElement)];
}
}, {
key: "removeElementAnimated",
value: function removeElementAnimated(wrapper) {
if (!this.$animate) {
return this.removeElement(wrapper);
}
if (this.isAngularVersionLessThen1_3) {
var deferred = this.$q.defer();
this.$animate.leave(wrapper.element, function () {
wrapper.scope.$destroy();
return deferred.resolve();
});
return [deferred.promise];
}
return [this.$animate.leave(wrapper.element).then(function () {
return wrapper.scope.$destroy();
})];
}
}]);
return ElementRoutines;
}();
// CONCATENATED MODULE: ./src/modules/buffer.js
function ScrollBuffer(elementRoutines, bufferSize, startIndex) {
var buffer = Object.create(Array.prototype);
angular.extend(buffer, {
size: bufferSize,
reset: function reset(startIndex) {
buffer.remove(0, buffer.length);
buffer.eof = false;
buffer.bof = false;
buffer.first = startIndex;
buffer.next = startIndex;
buffer.minIndex = startIndex;
buffer.maxIndex = startIndex;
buffer.minIndexUser = null;
buffer.maxIndexUser = null;
},
append: function append(items) {
items.forEach(function (item) {
++buffer.next;
buffer.insert('append', item);
});
buffer.maxIndex = buffer.eof ? buffer.next - 1 : Math.max(buffer.next - 1, buffer.maxIndex);
},
prepend: function prepend(items) {
items.reverse().forEach(function (item) {
--buffer.first;
buffer.insert('prepend', item);
});
buffer.minIndex = buffer.bof ? buffer.minIndex = buffer.first : Math.min(buffer.first, buffer.minIndex);
},
/**
* inserts wrapped element in the buffer
* the first argument is either operation keyword (see below) or a number for operation 'insert'
* for insert the number is the index for the buffer element the new one have to be inserted after
* operations: 'append', 'prepend', 'insert', 'remove', 'update', 'none'
*/
insert: function insert(operation, item, isTop) {
var wrapper = {
item: item
};
if (operation % 1 === 0) {
// it is an insert
wrapper.op = 'insert';
buffer.splice(operation, 0, wrapper);
if (isTop) {
buffer.first--;
} else {
buffer.next++;
}
} else {
wrapper.op = operation;
switch (operation) {
case 'append':
buffer.push(wrapper);
break;
case 'prepend':
buffer.unshift(wrapper);
break;
}
}
},
// removes elements from buffer
remove: function remove(arg1, arg2) {
if (angular.isNumber(arg1)) {
// removes items from arg1 (including) through arg2 (excluding)
for (var i = arg1; i < arg2; i++) {
elementRoutines.removeElement(buffer[i]);
}
return buffer.splice(arg1, arg2 - arg1);
} // removes single item(wrapper) from the buffer
buffer.splice(buffer.indexOf(arg1), 1);
if (arg1._op === 'isTop' && buffer.first === this.getAbsMinIndex()) {
this.incrementMinIndex();
} else {
this.decrementMaxIndex();
}
if (arg1._op === 'isTop') {
buffer.first++;
} else {
buffer.next--;
}
if (!buffer.length) {
buffer.first = 1;
buffer.next = 1;
}
return elementRoutines.removeElementAnimated(arg1);
},
incrementMinIndex: function incrementMinIndex() {
if (buffer.minIndexUser !== null) {
if (buffer.minIndex > buffer.minIndexUser) {
buffer.minIndexUser++;
return;
}
if (buffer.minIndex === buffer.minIndexUser) {
buffer.minIndexUser++;
}
}
buffer.minIndex++;
},
decrementMaxIndex: function decrementMaxIndex() {
if (buffer.maxIndexUser !== null && buffer.maxIndex <= buffer.maxIndexUser) {
buffer.maxIndexUser--;
}
buffer.maxIndex--;
},
getAbsMinIndex: function getAbsMinIndex() {
if (buffer.minIndexUser !== null) {
return Math.min(buffer.minIndexUser, buffer.minIndex);
}
return buffer.minIndex;
},
getAbsMaxIndex: function getAbsMaxIndex() {
if (buffer.maxIndexUser !== null) {
return Math.max(buffer.maxIndexUser, buffer.maxIndex);
}
return buffer.maxIndex;
},
effectiveHeight: function effectiveHeight(elements) {
if (!elements.length) {
return 0;
}
var top = Number.MAX_VALUE;
var bottom = Number.NEGATIVE_INFINITY;
elements.forEach(function (wrapper) {
if (wrapper.element[0].offsetParent) {
// element style is not display:none
top = Math.min(top, wrapper.element.offset().top);
bottom = Math.max(bottom, wrapper.element.offset().top + wrapper.element.outerHeight(true));
}
});
return Math.max(0, bottom - top);
}
});
buffer.reset(startIndex);
return buffer;
}
// CONCATENATED MODULE: ./src/modules/padding.js
function padding_classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function padding_defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function padding_createClass(Constructor, protoProps, staticProps) { if (protoProps) padding_defineProperties(Constructor.prototype, protoProps); if (staticProps) padding_defineProperties(Constructor, staticProps); return Constructor; }
// Can't just extend the Array, due to Babel does not support built-in classes extending
// This solution was taken from https://stackoverflow.com/questions/46897414/es6-class-extends-array-workaround-for-es5-babel-transpile
var CacheProto =
/*#__PURE__*/
function () {
function CacheProto() {
padding_classCallCheck(this, CacheProto);
}
padding_createClass(CacheProto, [{
key: "add",
value: function add(item) {
for (var i = this.length - 1; i >= 0; i--) {
if (this[i].index === item.scope.$index) {
this[i].height = item.element.outerHeight();
return;
}
}
this.push({
index: item.scope.$index,
height: item.element.outerHeight()
});
this.sort(function (a, b) {
return a.index < b.index ? -1 : a.index > b.index ? 1 : 0;
});
}
}, {
key: "remove",
value: function remove(argument, _isTop) {
var index = argument % 1 === 0 ? argument : argument.scope.$index;
var isTop = argument % 1 === 0 ? _isTop : argument._op === 'isTop';
for (var i = this.length - 1; i >= 0; i--) {
if (this[i].index === index) {
this.splice(i, 1);
break;
}
}
if (!isTop) {
for (var _i = this.length - 1; _i >= 0; _i--) {
if (this[_i].index > index) {
this[_i].index--;
}
}
}
}
}, {
key: "clear",
value: function clear() {
this.length = 0;
}
}]);
return CacheProto;
}();
function Cache() {
var instance = [];
instance.push.apply(instance, arguments);
Object.setPrototypeOf(instance, Cache.prototype);
return instance;
}
Cache.prototype = Object.create(Array.prototype);
Object.getOwnPropertyNames(CacheProto.prototype).forEach(function (methodName) {
return Cache.prototype[methodName] = CacheProto.prototype[methodName];
});
function generateElement(template) {
if (template.nodeType !== Node.ELEMENT_NODE) {
throw new Error('ui-scroll directive requires an Element node for templating the view');
}
var element;
switch (template.tagName.toLowerCase()) {
case 'dl':
throw new Error("ui-scroll directive does not support <".concat(template.tagName, "> as a repeating tag: ").concat(template.outerHTML));
case 'tr':
var table = angular.element('<table><tr><td><div></div></td></tr></table>');
element = table.find('tr');
break;
case 'li':
element = angular.element('<li></li>');
break;
default:
element = angular.element('<div></div>');
}
return element;
}
var Padding =
/*#__PURE__*/
function () {
function Padding(template) {
padding_classCallCheck(this, Padding);
this.element = generateElement(template);
this.cache = new Cache();
}
padding_createClass(Padding, [{
key: "height",
value: function height() {
return this.element.height.apply(this.element, arguments);
}
}]);
return Padding;
}();
/* harmony default export */ var modules_padding = (Padding);
// CONCATENATED MODULE: ./src/modules/viewport.js
function Viewport(elementRoutines, buffer, element, viewportController, $rootScope, padding) {
var topPadding = null;
var bottomPadding = null;
var viewport = viewportController && viewportController.viewport ? viewportController.viewport : angular.element(window);
var container = viewportController && viewportController.container ? viewportController.container : undefined;
var scope = viewportController && viewportController.scope ? viewportController.scope : $rootScope;
viewport.css({
'overflow-anchor': 'none',
'overflow-y': 'auto',
'display': 'block'
});
function bufferPadding() {
return viewport.outerHeight() * padding; // some extra space to initiate preload
}
angular.extend(viewport, {
getScope: function getScope() {
return scope;
},
createPaddingElements: function createPaddingElements(template) {
topPadding = new modules_padding(template);
bottomPadding = new modules_padding(template);
element.before(topPadding.element);
element.after(bottomPadding.element);
topPadding.height(0);
bottomPadding.height(0);
},
applyContainerStyle: function applyContainerStyle() {
if (!container) {
return true;
}
if (container !== viewport) {
viewport.css('height', window.getComputedStyle(container[0]).height);
}
return viewport.height() > 0;
},
bottomDataPos: function bottomDataPos() {
var scrollHeight = viewport[0].scrollHeight;
scrollHeight = scrollHeight != null ? scrollHeight : viewport[0].document.documentElement.scrollHeight;
return scrollHeight - bottomPadding.height();
},
topDataPos: function topDataPos() {
return topPadding.height();
},
bottomVisiblePos: function bottomVisiblePos() {
return viewport.scrollTop() + viewport.outerHeight();
},
topVisiblePos: function topVisiblePos() {
return viewport.scrollTop();
},
insertElement: function insertElement(e, sibling) {
return elementRoutines.insertElement(e, sibling || topPadding.element);
},
insertElementAnimated: function insertElementAnimated(e, sibling) {
return elementRoutines.insertElementAnimated(e, sibling || topPadding.element);
},
shouldLoadBottom: function shouldLoadBottom() {
return !buffer.eof && viewport.bottomDataPos() < viewport.bottomVisiblePos() + bufferPadding();
},
clipBottom: function clipBottom() {
// clip the invisible items off the bottom
var overage = 0;
var overageHeight = 0;
var itemHeight = 0;
var emptySpaceHeight = viewport.bottomDataPos() - viewport.bottomVisiblePos() - bufferPadding();
for (var i = buffer.length - 1; i >= 0; i--) {
itemHeight = buffer[i].element.outerHeight(true);
if (overageHeight + itemHeight > emptySpaceHeight) {
break;
}
bottomPadding.cache.add(buffer[i]);
overageHeight += itemHeight;
overage++;
}
if (overage > 0) {
buffer.eof = false;
buffer.remove(buffer.length - overage, buffer.length);
buffer.next -= overage;
viewport.adjustPaddings();
}
},
shouldLoadTop: function shouldLoadTop() {
return !buffer.bof && viewport.topDataPos() > viewport.topVisiblePos() - bufferPadding();
},
clipTop: function clipTop() {
// clip the invisible items off the top
var overage = 0;
var overageHeight = 0;
var itemHeight = 0;
var emptySpaceHeight = viewport.topVisiblePos() - viewport.topDataPos() - bufferPadding();
for (var i = 0; i < buffer.length; i++) {
itemHeight = buffer[i].element.outerHeight(true);
if (overageHeight + itemHeight > emptySpaceHeight) {
break;
}
topPadding.cache.add(buffer[i]);
overageHeight += itemHeight;
overage++;
}
if (overage > 0) {
// we need to adjust top padding element before items are removed from top
// to avoid strange behaviour of scroll bar during remove top items when we are at the very bottom
topPadding.height(topPadding.height() + overageHeight);
buffer.bof = false;
buffer.remove(0, overage);
buffer.first += overage;
}
},
adjustPaddings: function adjustPaddings() {
if (!buffer.length) {
return;
} // precise heights calculation based on items that are in buffer or that were in buffer once
var visibleItemsHeight = buffer.reduce(function (summ, item) {
return summ + item.element.outerHeight(true);
}, 0);
var topPaddingHeight = 0,
topCount = 0;
topPadding.cache.forEach(function (item) {
if (item.index < buffer.first) {
topPaddingHeight += item.height;
topCount++;
}
});
var bottomPaddingHeight = 0,
bottomCount = 0;
bottomPadding.cache.forEach(function (item) {
if (item.index >= buffer.next) {
bottomPaddingHeight += item.height;
bottomCount++;
}
});
var totalHeight = visibleItemsHeight + topPaddingHeight + bottomPaddingHeight;
var averageItemHeight = totalHeight / (topCount + bottomCount + buffer.length); // average heights calculation, items that have never been reached
var adjustTopPadding = buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser;
var adjustBottomPadding = buffer.maxIndexUser !== null && buffer.maxIndex < buffer.maxIndexUser;
var topPaddingHeightAdd = adjustTopPadding ? (buffer.minIndex - buffer.minIndexUser) * averageItemHeight : 0;
var bottomPaddingHeightAdd = adjustBottomPadding ? (buffer.maxIndexUser - buffer.maxIndex) * averageItemHeight : 0; // paddings combine adjustment
topPadding.height(topPaddingHeight + topPaddingHeightAdd);
bottomPadding.height(bottomPaddingHeight + bottomPaddingHeightAdd);
},
onAfterMinIndexSet: function onAfterMinIndexSet(topPaddingHeightOld) {
// additional scrollTop adjustment in case of datasource.minIndex external set
if (buffer.minIndexUser !== null && buffer.minIndex > buffer.minIndexUser) {
var diff = topPadding.height() - topPaddingHeightOld;
viewport.scrollTop(viewport.scrollTop() + diff);
while ((diff -= viewport.scrollTop()) > 0) {
bottomPadding.height(bottomPadding.height() + diff);
viewport.scrollTop(viewport.scrollTop() + diff);
}
}
},
onAfterPrepend: function onAfterPrepend(updates) {
if (!updates.prepended.length) return;
var height = buffer.effectiveHeight(updates.prepended);
var paddingHeight = topPadding.height() - height;
if (paddingHeight >= 0) {
topPadding.height(paddingHeight);
} else {
topPadding.height(0);
viewport.scrollTop(viewport.scrollTop() - paddingHeight);
}
},
resetTopPadding: function resetTopPadding() {
topPadding.height(0);
topPadding.cache.clear();
},
resetBottomPadding: function resetBottomPadding() {
bottomPadding.height(0);
bottomPadding.cache.clear();
},
removeCacheItem: function removeCacheItem(item, isTop) {
topPadding.cache.remove(item, isTop);
bottomPadding.cache.remove(item, isTop);
},
removeItem: function removeItem(item) {
this.removeCacheItem(item);
return buffer.remove(item);
}
});
return viewport;
}
// CONCATENATED MODULE: ./src/modules/adapter.js
function adapter_classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function adapter_defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function adapter_createClass(Constructor, protoProps, staticProps) { if (protoProps) adapter_defineProperties(Constructor.prototype, protoProps); if (staticProps) adapter_defineProperties(Constructor, staticProps); return Constructor; }
var Adapter =
/*#__PURE__*/
function () {
function Adapter($scope, $parse, $attr, viewport, buffer, doAdjust, reload) {