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510 lines
19 KiB
JavaScript
510 lines
19 KiB
JavaScript
/* eslint-disable */
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/*
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TODO:
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1. export module name.
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2. publish into its own repo?
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3. fix lint errors.
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*/
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import angular from 'angular';
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import jQuery from 'jquery';
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import sortable from 'jquery-ui/ui/widgets/sortable';
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/*
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jQuery UI Sortable plugin wrapper
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@param [ui-sortable] {object} Options to pass to $.fn.sortable() merged onto ui.config
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*/
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angular.module('ui.sortable', [])
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.value('uiSortableConfig', {
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// the default for jquery-ui sortable is "> *", we need to restrict this to
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// ng-repeat items
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// if the user uses
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items: '> [ng-repeat],> [data-ng-repeat],> [x-ng-repeat]',
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})
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.directive('uiSortable', [
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'uiSortableConfig', '$timeout', '$log',
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function (uiSortableConfig, $timeout, $log) {
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return {
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require: '?ngModel',
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scope: {
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ngModel: '=',
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uiSortable: '=',
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},
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link(scope, element, attrs, ngModel) {
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let savedNodes;
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element = jQuery(element);
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function combineCallbacks(first, second) {
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const firstIsFunc = typeof first === 'function';
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const secondIsFunc = typeof second === 'function';
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if (firstIsFunc && secondIsFunc) {
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return function () {
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first.apply(this, arguments);
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second.apply(this, arguments);
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};
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} else if (secondIsFunc) {
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return second;
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}
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return first;
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}
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function getSortableWidgetInstance(element) {
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// this is a fix to support jquery-ui prior to v1.11.x
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// otherwise we should be using `element.sortable('instance')`
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const data = element.data('ui-sortable');
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if (data && typeof data === 'object' && data.widgetFullName === 'ui-sortable') {
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return data;
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}
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return null;
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}
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function patchSortableOption(key, value) {
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if (callbacks[key]) {
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if (key === 'stop') {
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// call apply after stop
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value = combineCallbacks(
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value, () => { scope.$apply(); });
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value = combineCallbacks(value, afterStop);
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}
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// wrap the callback
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value = combineCallbacks(callbacks[key], value);
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} else if (wrappers[key]) {
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value = wrappers[key](value);
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}
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// patch the options that need to have values set
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if (!value && (key === 'items' || key === 'ui-model-items')) {
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value = uiSortableConfig.items;
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}
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return value;
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}
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function patchUISortableOptions(newVal, oldVal, sortableWidgetInstance) {
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function addDummyOptionKey(value, key) {
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if (!(key in opts)) {
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// add the key in the opts object so that
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// the patch function detects and handles it
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opts[key] = null;
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}
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}
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// for this directive to work we have to attach some callbacks
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angular.forEach(callbacks, addDummyOptionKey);
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// only initialize it in case we have to
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// update some options of the sortable
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let optsDiff = null;
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if (oldVal) {
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// reset deleted options to default
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let defaultOptions;
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angular.forEach(oldVal, (oldValue, key) => {
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if (!newVal || !(key in newVal)) {
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if (key in directiveOpts) {
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if (key === 'ui-floating') {
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opts[key] = 'auto';
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} else {
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opts[key] = patchSortableOption(key, undefined);
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}
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return;
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}
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if (!defaultOptions) {
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defaultOptions = sortable().options;
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}
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let defaultValue = defaultOptions[key];
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defaultValue = patchSortableOption(key, defaultValue);
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if (!optsDiff) {
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optsDiff = {};
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}
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optsDiff[key] = defaultValue;
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opts[key] = defaultValue;
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}
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});
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}
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// update changed options
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angular.forEach(newVal, (value, key) => {
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// if it's a custom option of the directive,
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// handle it approprietly
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if (key in directiveOpts) {
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if (key === 'ui-floating' && (value === false || value === true) && sortableWidgetInstance) {
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sortableWidgetInstance.floating = value;
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}
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opts[key] = patchSortableOption(key, value);
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return;
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}
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value = patchSortableOption(key, value);
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if (!optsDiff) {
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optsDiff = {};
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}
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optsDiff[key] = value;
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opts[key] = value;
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});
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return optsDiff;
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}
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function getPlaceholderElement(element) {
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const placeholder = element.sortable('option', 'placeholder');
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// placeholder.element will be a function if the placeholder, has
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// been created (placeholder will be an object). If it hasn't
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// been created, either placeholder will be false if no
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// placeholder class was given or placeholder.element will be
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// undefined if a class was given (placeholder will be a string)
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if (placeholder && placeholder.element && typeof placeholder.element === 'function') {
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let result = placeholder.element();
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// workaround for jquery ui 1.9.x,
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// not returning jquery collection
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result = jQuery(result);
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return result;
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}
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return null;
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}
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function getPlaceholderExcludesludes(element, placeholder) {
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// exact match with the placeholder's class attribute to handle
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// the case that multiple connected sortables exist and
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// the placeholder option equals the class of sortable items
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const notCssSelector = opts['ui-model-items'].replace(/[^,]*>/g, '');
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const excludes = element.find(`[class="${placeholder.attr('class')}"]:not(${notCssSelector})`);
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return excludes;
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}
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function hasSortingHelper(element, ui) {
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const helperOption = element.sortable('option', 'helper');
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return helperOption === 'clone' || (typeof helperOption === 'function' && ui.item.sortable.isCustomHelperUsed());
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}
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function getSortingHelper(element, ui, savedNodes) {
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let result = null;
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if (hasSortingHelper(element, ui) &&
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element.sortable('option', 'appendTo') === 'parent') {
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// The .ui-sortable-helper element (that's the default class name)
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// is placed last.
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result = savedNodes.last();
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}
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return result;
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}
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// thanks jquery-ui
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function isFloating(item) {
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return (/left|right/).test(item.css('float')) || (/inline|table-cell/).test(item.css('display'));
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}
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function getElementScope(elementScopes, element) {
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let result = null;
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for (let i = 0; i < elementScopes.length; i++) {
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const x = elementScopes[i];
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if (x.element[0] === element[0]) {
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result = x.scope;
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break;
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}
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}
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return result;
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}
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function afterStop(e, ui) {
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ui.item.sortable._destroy();
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}
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// return the index of ui.item among the items
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// we can't just do ui.item.index() because there it might have siblings
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// which are not items
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function getItemIndex(item) {
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return item.parent()
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.find(opts['ui-model-items'])
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.index(item);
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}
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let opts = {};
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// directive specific options
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let directiveOpts = {
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'ui-floating': undefined,
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'ui-model-items': uiSortableConfig.items,
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};
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let callbacks = {
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receive: null,
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remove: null,
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start: null,
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stop: null,
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update: null,
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};
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let wrappers = {
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helper: null,
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};
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angular.extend(opts, directiveOpts, uiSortableConfig, scope.uiSortable);
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function wireUp() {
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// When we add or remove elements, we need the sortable to 'refresh'
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// so it can find the new/removed elements.
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scope.$watchCollection('ngModel', () => {
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// Timeout to let ng-repeat modify the DOM
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$timeout(() => {
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// ensure that the jquery-ui-sortable widget instance
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// is still bound to the directive's element
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if (!!getSortableWidgetInstance(element)) {
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element.sortable('refresh');
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}
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}, 0, false);
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});
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callbacks.start = function (e, ui) {
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if (opts['ui-floating'] === 'auto') {
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// since the drag has started, the element will be
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// absolutely positioned, so we check its siblings
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const siblings = ui.item.siblings();
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const sortableWidgetInstance = getSortableWidgetInstance(jQuery(e.target));
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sortableWidgetInstance.floating = isFloating(siblings);
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}
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// Save the starting position of dragged item
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const index = getItemIndex(ui.item);
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ui.item.sortable = {
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model: ngModel.$modelValue[index],
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index,
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source: ui.item.parent(),
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sourceModel: ngModel.$modelValue,
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cancel() {
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ui.item.sortable._isCanceled = true;
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},
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isCanceled() {
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return ui.item.sortable._isCanceled;
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},
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isCustomHelperUsed() {
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return !!ui.item.sortable._isCustomHelperUsed;
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},
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_isCanceled: false,
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_isCustomHelperUsed: ui.item.sortable._isCustomHelperUsed,
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_destroy() {
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angular.forEach(ui.item.sortable, (value, key) => {
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ui.item.sortable[key] = undefined;
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});
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},
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};
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};
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callbacks.activate = function (e, ui) {
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// We need to make a copy of the current element's contents so
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// we can restore it after sortable has messed it up.
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// This is inside activate (instead of start) in order to save
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// both lists when dragging between connected lists.
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savedNodes = element.contents();
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// If this list has a placeholder (the connected lists won't),
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// don't inlcude it in saved nodes.
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const placeholder = getPlaceholderElement(element);
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if (placeholder && placeholder.length) {
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const excludes = getPlaceholderExcludesludes(element, placeholder);
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savedNodes = savedNodes.not(excludes);
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}
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// save the directive's scope so that it is accessible from ui.item.sortable
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const connectedSortables = ui.item.sortable._connectedSortables || [];
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connectedSortables.push({
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element,
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scope,
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});
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ui.item.sortable._connectedSortables = connectedSortables;
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};
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callbacks.update = function (e, ui) {
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// Save current drop position but only if this is not a second
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// update that happens when moving between lists because then
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// the value will be overwritten with the old value
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if (!ui.item.sortable.received) {
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ui.item.sortable.dropindex = getItemIndex(ui.item);
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const droptarget = ui.item.parent();
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ui.item.sortable.droptarget = droptarget;
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const droptargetScope = getElementScope(ui.item.sortable._connectedSortables, droptarget);
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ui.item.sortable.droptargetModel = droptargetScope.ngModel;
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// Cancel the sort (let ng-repeat do the sort for us)
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// Don't cancel if this is the received list because it has
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// already been canceled in the other list, and trying to cancel
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// here will mess up the DOM.
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element.sortable('cancel');
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}
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// Put the nodes back exactly the way they started (this is very
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// important because ng-repeat uses comment elements to delineate
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// the start and stop of repeat sections and sortable doesn't
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// respect their order (even if we cancel, the order of the
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// comments are still messed up).
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const sortingHelper = !ui.item.sortable.received && getSortingHelper(element, ui, savedNodes);
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if (sortingHelper && sortingHelper.length) {
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// Restore all the savedNodes except from the sorting helper element.
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// That way it will be garbage collected.
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savedNodes = savedNodes.not(sortingHelper);
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}
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savedNodes.appendTo(element);
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// If this is the target connected list then
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// it's safe to clear the restored nodes since:
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// update is currently running and
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// stop is not called for the target list.
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if (ui.item.sortable.received) {
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savedNodes = null;
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}
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// If received is true (an item was dropped in from another list)
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// then we add the new item to this list otherwise wait until the
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// stop event where we will know if it was a sort or item was
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// moved here from another list
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if (ui.item.sortable.received && !ui.item.sortable.isCanceled()) {
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scope.$apply(() => {
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ngModel.$modelValue.splice(ui.item.sortable.dropindex, 0,
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ui.item.sortable.moved);
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});
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}
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};
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callbacks.stop = function (e, ui) {
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// If the received flag hasn't be set on the item, this is a
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// normal sort, if dropindex is set, the item was moved, so move
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// the items in the list.
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if (!ui.item.sortable.received &&
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('dropindex' in ui.item.sortable) &&
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!ui.item.sortable.isCanceled()) {
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scope.$apply(() => {
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ngModel.$modelValue.splice(
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ui.item.sortable.dropindex, 0,
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ngModel.$modelValue.splice(ui.item.sortable.index, 1)[0]);
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});
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} else {
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// if the item was not moved, then restore the elements
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// so that the ngRepeat's comment are correct.
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if ((!('dropindex' in ui.item.sortable) || ui.item.sortable.isCanceled()) &&
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!angular.equals(element.contents(), savedNodes)) {
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const sortingHelper = getSortingHelper(element, ui, savedNodes);
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if (sortingHelper && sortingHelper.length) {
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// Restore all the savedNodes except from the sorting helper element.
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// That way it will be garbage collected.
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savedNodes = savedNodes.not(sortingHelper);
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}
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savedNodes.appendTo(element);
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}
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}
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// It's now safe to clear the savedNodes
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// since stop is the last callback.
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savedNodes = null;
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};
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callbacks.receive = function (e, ui) {
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// An item was dropped here from another list, set a flag on the
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// item.
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ui.item.sortable.received = true;
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};
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callbacks.remove = function (e, ui) {
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// Workaround for a problem observed in nested connected lists.
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// There should be an 'update' event before 'remove' when moving
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// elements. If the event did not fire, cancel sorting.
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if (!('dropindex' in ui.item.sortable)) {
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element.sortable('cancel');
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ui.item.sortable.cancel();
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}
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// Remove the item from this list's model and copy data into item,
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// so the next list can retrive it
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if (!ui.item.sortable.isCanceled()) {
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scope.$apply(() => {
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ui.item.sortable.moved = ngModel.$modelValue.splice(
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ui.item.sortable.index, 1)[0];
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});
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}
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};
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wrappers.helper = function (inner) {
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if (inner && typeof inner === 'function') {
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return function (e, item) {
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const oldItemSortable = item.sortable;
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const index = getItemIndex(item);
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item.sortable = {
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model: ngModel.$modelValue[index],
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index,
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source: item.parent(),
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sourceModel: ngModel.$modelValue,
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_restore() {
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angular.forEach(item.sortable, (value, key) => {
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item.sortable[key] = undefined;
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});
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item.sortable = oldItemSortable;
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},
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};
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const innerResult = inner.apply(this, arguments);
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item.sortable._restore();
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item.sortable._isCustomHelperUsed = item !== innerResult;
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return innerResult;
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};
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}
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return inner;
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};
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scope.$watchCollection('uiSortable', (newVal, oldVal) => {
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// ensure that the jquery-ui-sortable widget instance
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// is still bound to the directive's element
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const sortableWidgetInstance = getSortableWidgetInstance(element);
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if (!!sortableWidgetInstance) {
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const optsDiff = patchUISortableOptions(newVal, oldVal, sortableWidgetInstance);
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if (optsDiff) {
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element.sortable('option', optsDiff);
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}
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}
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}, true);
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patchUISortableOptions(opts);
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}
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function init() {
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if (ngModel) {
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wireUp();
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} else {
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$log.info('ui.sortable: ngModel not provided!', element);
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}
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// Create sortable
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element.sortable(opts);
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}
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function initIfEnabled() {
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if (scope.uiSortable && scope.uiSortable.disabled) {
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return false;
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}
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init();
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// Stop Watcher
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initIfEnabled.cancelWatcher();
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initIfEnabled.cancelWatcher = angular.noop;
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return true;
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}
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initIfEnabled.cancelWatcher = angular.noop;
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if (!initIfEnabled()) {
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initIfEnabled.cancelWatcher = scope.$watch('uiSortable.disabled', initIfEnabled);
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}
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},
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};
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},
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]);
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