613 lines
No EOL
20 KiB
JavaScript
613 lines
No EOL
20 KiB
JavaScript
/*
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* jQuery UI Nested Sortable
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* v 2.0 / 29 oct 2012
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* http://mjsarfatti.com/sandbox/nestedSortable
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*
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* Depends on:
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* jquery.ui.sortable.js 1.10+
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*
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* Copyright (c) 2010-2013 Manuele J Sarfatti
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* Licensed under the MIT License
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* http://www.opensource.org/licenses/mit-license.php
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*/
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(function($) {
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function isOverAxis( x, reference, size ) {
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return ( x > reference ) && ( x < ( reference + size ) );
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}
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$.widget("mjs.nestedSortable", $.extend({}, $.ui.sortable.prototype, {
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options: {
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doNotClear: false,
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expandOnHover: 700,
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isAllowed: function(placeholder, placeholderParent, originalItem) { return true; },
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isTree: false,
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listType: 'ol',
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maxLevels: 0,
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protectRoot: false,
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rootID: null,
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rtl: false,
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startCollapsed: false,
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tabSize: 20,
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branchClass: 'mjs-nestedSortable-branch',
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collapsedClass: 'mjs-nestedSortable-collapsed',
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disableNestingClass: 'mjs-nestedSortable-no-nesting',
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errorClass: 'mjs-nestedSortable-error',
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expandedClass: 'mjs-nestedSortable-expanded',
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hoveringClass: 'mjs-nestedSortable-hovering',
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leafClass: 'mjs-nestedSortable-leaf'
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},
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_create: function() {
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this.element.data('ui-sortable', this.element.data('mjs-nestedSortable'));
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// mjs - prevent browser from freezing if the HTML is not correct
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if (!this.element.is(this.options.listType))
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throw new Error('nestedSortable: Please check that the listType option is set to your actual list type');
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// mjs - force 'intersect' tolerance method if we have a tree with expanding/collapsing functionality
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if (this.options.isTree && this.options.expandOnHover) {
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this.options.tolerance = 'intersect';
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}
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$.ui.sortable.prototype._create.apply(this, arguments);
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// mjs - prepare the tree by applying the right classes (the CSS is responsible for actual hide/show functionality)
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if (this.options.isTree) {
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var self = this;
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$(this.items).each(function() {
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var $li = this.item;
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if ($li.children(self.options.listType).length) {
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$li.addClass(self.options.branchClass);
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// expand/collapse class only if they have children
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if (self.options.startCollapsed) $li.addClass(self.options.collapsedClass);
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else $li.addClass(self.options.expandedClass);
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} else {
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$li.addClass(self.options.leafClass);
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}
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})
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}
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},
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_destroy: function() {
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this.element
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.removeData("mjs-nestedSortable")
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.removeData("ui-sortable");
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return $.ui.sortable.prototype._destroy.apply(this, arguments);
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},
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_mouseDrag: function(event) {
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var i, item, itemElement, intersection,
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o = this.options,
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scrolled = false;
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//Compute the helpers position
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this.position = this._generatePosition(event);
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this.positionAbs = this._convertPositionTo("absolute");
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if (!this.lastPositionAbs) {
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this.lastPositionAbs = this.positionAbs;
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}
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//Do scrolling
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if(this.options.scroll) {
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if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') {
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if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
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this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
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} else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity) {
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this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
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}
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if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
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this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
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} else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity) {
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this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
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}
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} else {
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if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
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scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
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} else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
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scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
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}
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if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
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scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
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} else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
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scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
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}
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}
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if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
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$.ui.ddmanager.prepareOffsets(this, event);
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}
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//Regenerate the absolute position used for position checks
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this.positionAbs = this._convertPositionTo("absolute");
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// mjs - find the top offset before rearrangement,
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var previousTopOffset = this.placeholder.offset().top;
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//Set the helper position
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if(!this.options.axis || this.options.axis !== "y") {
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this.helper[0].style.left = this.position.left+"px";
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}
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if(!this.options.axis || this.options.axis !== "x") {
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this.helper[0].style.top = this.position.top+"px";
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}
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// mjs - check and reset hovering state at each cycle
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this.hovering = this.hovering ? this.hovering : null;
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this.mouseentered = this.mouseentered ? this.mouseentered : false;
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// mjs - let's start caching some variables
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var parentItem = (this.placeholder[0].parentNode.parentNode &&
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$(this.placeholder[0].parentNode.parentNode).closest('.ui-sortable').length)
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? $(this.placeholder[0].parentNode.parentNode)
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: null,
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level = this._getLevel(this.placeholder),
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childLevels = this._getChildLevels(this.helper);
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var newList = document.createElement(o.listType);
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//Rearrange
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for (i = this.items.length - 1; i >= 0; i--) {
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//Cache variables and intersection, continue if no intersection
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item = this.items[i];
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itemElement = item.item[0];
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intersection = this._intersectsWithPointer(item);
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if (!intersection) {
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continue;
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}
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// Only put the placeholder inside the current Container, skip all
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// items form other containers. This works because when moving
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// an item from one container to another the
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// currentContainer is switched before the placeholder is moved.
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//
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// Without this moving items in "sub-sortables" can cause the placeholder to jitter
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// beetween the outer and inner container.
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if (item.instance !== this.currentContainer) {
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continue;
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}
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// cannot intersect with itself
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// no useless actions that have been done before
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// no action if the item moved is the parent of the item checked
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if (itemElement !== this.currentItem[0] &&
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this.placeholder[intersection === 1 ? "next" : "prev"]()[0] !== itemElement &&
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!$.contains(this.placeholder[0], itemElement) &&
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(this.options.type === "semi-dynamic" ? !$.contains(this.element[0], itemElement) : true)
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) {
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// mjs - we are intersecting an element: trigger the mouseenter event and store this state
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if (!this.mouseentered) {
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$(itemElement).mouseenter();
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this.mouseentered = true;
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}
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// mjs - if the element has children and they are hidden, show them after a delay (CSS responsible)
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if (o.isTree && $(itemElement).hasClass(o.collapsedClass) && o.expandOnHover) {
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if (!this.hovering) {
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$(itemElement).addClass(o.hoveringClass);
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var self = this;
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this.hovering = window.setTimeout(function() {
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$(itemElement).removeClass(o.collapsedClass).addClass(o.expandedClass);
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self.refreshPositions();
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self._trigger("expand", event, self._uiHash());
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}, o.expandOnHover);
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}
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}
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this.direction = intersection == 1 ? "down" : "up";
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// mjs - rearrange the elements and reset timeouts and hovering state
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if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) {
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$(itemElement).mouseleave();
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this.mouseentered = false;
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$(itemElement).removeClass(o.hoveringClass);
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this.hovering && window.clearTimeout(this.hovering);
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this.hovering = null;
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// mjs - do not switch container if it's a root item and 'protectRoot' is true
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// or if it's not a root item but we are trying to make it root
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if (o.protectRoot
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&& ! (this.currentItem[0].parentNode == this.element[0] // it's a root item
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&& itemElement.parentNode != this.element[0]) // it's intersecting a non-root item
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) {
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if (this.currentItem[0].parentNode != this.element[0]
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&& itemElement.parentNode == this.element[0]
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) {
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if ( ! $(itemElement).children(o.listType).length) {
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itemElement.appendChild(newList);
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o.isTree && $(itemElement).removeClass(o.leafClass).addClass(o.branchClass + ' ' + o.expandedClass);
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}
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var a = this.direction === "down" ? $(itemElement).prev().children(o.listType) : $(itemElement).children(o.listType);
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if (a[0] !== undefined) {
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this._rearrange(event, null, a);
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}
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} else {
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this._rearrange(event, item);
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}
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} else if ( ! o.protectRoot) {
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this._rearrange(event, item);
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}
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} else {
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break;
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}
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// Clear emtpy ul's/ol's
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this._clearEmpty(itemElement);
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this._trigger("change", event, this._uiHash());
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break;
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}
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}
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// mjs - to find the previous sibling in the list, keep backtracking until we hit a valid list item.
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var previousItem = this.placeholder[0].previousSibling ? $(this.placeholder[0].previousSibling) : null;
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if (previousItem != null) {
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while (previousItem[0].nodeName.toLowerCase() != $(o.listType)[0].nodeName.toLowerCase() || previousItem[0] == this.currentItem[0] || previousItem[0] == this.helper[0]) {
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if (previousItem[0].previousSibling) {
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previousItem = $(previousItem[0].previousSibling);
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} else {
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previousItem = null;
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break;
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}
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}
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}
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// mjs - to find the next sibling in the list, keep stepping forward until we hit a valid list item.
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var nextItem = this.placeholder[0].nextSibling ? $(this.placeholder[0].nextSibling) : null;
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if (nextItem != null) {
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while (nextItem[0].nodeName.toLowerCase() != $(o.listType)[0].nodeName.toLowerCase() || nextItem[0] == this.currentItem[0] || nextItem[0] == this.helper[0]) {
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if (nextItem[0].nextSibling) {
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nextItem = $(nextItem[0].nextSibling);
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} else {
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nextItem = null;
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break;
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}
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}
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}
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this.beyondMaxLevels = 0;
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// mjs - if the item is moved to the left, send it one level up but only if it's at the bottom of the list
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if (parentItem != null
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&& nextItem == null
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&& ! (o.protectRoot && parentItem[0].parentNode == this.element[0])
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&&
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(o.rtl && (this.positionAbs.left + this.helper.outerWidth() > parentItem.offset().left + parentItem.outerWidth())
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|| ! o.rtl && (this.positionAbs.left < parentItem.offset().left))
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) {
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parentItem.after(this.placeholder[0]);
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if (o.isTree && parentItem.children(o.listItem).children(o.listItem + ':visible:not(.ui-sortable-helper)').length < 1) {
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parentItem.removeClass(this.options.branchClass + ' ' + this.options.expandedClass)
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.addClass(this.options.leafClass);
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}
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this._clearEmpty(parentItem[0]);
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this._trigger("change", event, this._uiHash());
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}
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// mjs - if the item is below a sibling and is moved to the right, make it a child of that sibling
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else if (previousItem != null
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&& ! previousItem.hasClass(o.disableNestingClass)
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&&
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(previousItem.children(o.listType).length && previousItem.children(o.listType).is(':visible')
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|| ! previousItem.children(o.listType).length)
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&& ! (o.protectRoot && this.currentItem[0].parentNode == this.element[0])
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&&
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(o.rtl && (this.positionAbs.left + this.helper.outerWidth() < previousItem.offset().left + previousItem.outerWidth() - o.tabSize)
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|| ! o.rtl && (this.positionAbs.left > previousItem.offset().left + o.tabSize))
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) {
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this._isAllowed(previousItem, level, level+childLevels+1);
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if (!previousItem.children(o.listType).length) {
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previousItem[0].appendChild(newList);
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o.isTree && previousItem.removeClass(o.leafClass).addClass(o.branchClass + ' ' + o.expandedClass);
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}
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// mjs - if this item is being moved from the top, add it to the top of the list.
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if (previousTopOffset && (previousTopOffset <= previousItem.offset().top)) {
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previousItem.children(o.listType).prepend(this.placeholder);
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}
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// mjs - otherwise, add it to the bottom of the list.
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else if(previousItem.children(o.listType).length) {
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previousItem.children(o.listType)[0].appendChild(this.placeholder[0]);
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}
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this._trigger("change", event, this._uiHash());
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}
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else {
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this._isAllowed(parentItem, level, level+childLevels);
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}
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//Post events to containers
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this._contactContainers(event);
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//Interconnect with droppables
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if($.ui.ddmanager) {
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$.ui.ddmanager.drag(this, event);
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}
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//Call callbacks
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this._trigger('sort', event, this._uiHash());
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this.lastPositionAbs = this.positionAbs;
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return false;
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},
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_mouseStop: function(event, noPropagation) {
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// mjs - if the item is in a position not allowed, send it back
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if (this.beyondMaxLevels) {
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this.placeholder.removeClass(this.options.errorClass);
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if (this.domPosition.prev) {
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$(this.domPosition.prev).after(this.placeholder);
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} else {
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$(this.domPosition.parent).prepend(this.placeholder);
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}
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this._trigger("revert", event, this._uiHash());
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}
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// mjs - clear the hovering timeout, just to be sure
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$('.'+this.options.hoveringClass).mouseleave().removeClass(this.options.hoveringClass);
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this.mouseentered = false;
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this.hovering && window.clearTimeout(this.hovering);
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this.hovering = null;
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$.ui.sortable.prototype._mouseStop.apply(this, arguments);
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},
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// mjs - this function is slightly modified to make it easier to hover over a collapsed element and have it expand
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_intersectsWithSides: function(item) {
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var half = this.options.isTree ? .8 : .5;
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var isOverBottomHalf = isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height*half), item.height),
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isOverTopHalf = isOverAxis(this.positionAbs.top + this.offset.click.top, item.top - (item.height*half), item.height),
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isOverRightHalf = isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
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verticalDirection = this._getDragVerticalDirection(),
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horizontalDirection = this._getDragHorizontalDirection();
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if (this.floating && horizontalDirection) {
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return ((horizontalDirection == "right" && isOverRightHalf) || (horizontalDirection == "left" && !isOverRightHalf));
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} else {
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return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) || (verticalDirection == "up" && isOverTopHalf));
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}
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},
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_contactContainers: function(event) {
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if (this.options.protectRoot && this.currentItem[0].parentNode == this.element[0] ) {
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return;
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}
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$.ui.sortable.prototype._contactContainers.apply(this, arguments);
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},
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_clear: function(event, noPropagation) {
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$.ui.sortable.prototype._clear.apply(this, arguments);
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// mjs - clean last empty ul/ol
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for (var i = this.items.length - 1; i >= 0; i--) {
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var item = this.items[i].item[0];
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this._clearEmpty(item);
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}
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},
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serialize: function(options) {
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var o = $.extend({}, this.options, options),
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items = this._getItemsAsjQuery(o && o.connected),
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str = [];
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$(items).each(function() {
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var res = ($(o.item || this).attr(o.attribute || 'id') || '')
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.match(o.expression || (/(.+)[-=_](.+)/)),
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pid = ($(o.item || this).parent(o.listType)
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.parent(o.items)
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.attr(o.attribute || 'id') || '')
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.match(o.expression || (/(.+)[-=_](.+)/));
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if (res) {
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str.push(((o.key || res[1]) + '[' + (o.key && o.expression ? res[1] : res[2]) + ']')
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+ '='
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+ (pid ? (o.key && o.expression ? pid[1] : pid[2]) : o.rootID));
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}
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});
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if(!str.length && o.key) {
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str.push(o.key + '=');
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}
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return str.join('&');
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},
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toHierarchy: function(options) {
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var o = $.extend({}, this.options, options),
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sDepth = o.startDepthCount || 0,
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ret = [];
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$(this.element).children(o.items).each(function () {
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var level = _recursiveItems(this);
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ret.push(level);
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});
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return ret;
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function _recursiveItems(item) {
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var id = ($(item).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
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if (id) {
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var currentItem = {"id" : id[2]};
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if ($(item).children(o.listType).children(o.items).length > 0) {
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currentItem.children = [];
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$(item).children(o.listType).children(o.items).each(function() {
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var level = _recursiveItems(this);
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currentItem.children.push(level);
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});
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}
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return currentItem;
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}
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}
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},
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toArray: function(options) {
|
|
|
|
var o = $.extend({}, this.options, options),
|
|
sDepth = o.startDepthCount || 0,
|
|
ret = [],
|
|
left = 1;
|
|
|
|
if (!o.excludeRoot) {
|
|
ret.push({
|
|
"item_id": o.rootID,
|
|
"parent_id": null,
|
|
"depth": sDepth,
|
|
"left": left,
|
|
"right": ($(o.items, this.element).length + 1) * 2
|
|
});
|
|
left++
|
|
}
|
|
|
|
$(this.element).children(o.items).each(function () {
|
|
left = _recursiveArray(this, sDepth + 1, left);
|
|
});
|
|
|
|
ret = ret.sort(function(a,b){ return (a.left - b.left); });
|
|
|
|
return ret;
|
|
|
|
function _recursiveArray(item, depth, left) {
|
|
|
|
var right = left + 1,
|
|
id,
|
|
pid;
|
|
|
|
if ($(item).children(o.listType).children(o.items).length > 0) {
|
|
depth ++;
|
|
$(item).children(o.listType).children(o.items).each(function () {
|
|
right = _recursiveArray($(this), depth, right);
|
|
});
|
|
depth --;
|
|
}
|
|
|
|
id = ($(item).attr(o.attribute || 'id')).match(o.expression || (/(.+)[-=_](.+)/));
|
|
|
|
if (depth === sDepth + 1) {
|
|
pid = o.rootID;
|
|
} else {
|
|
var parentItem = ($(item).parent(o.listType)
|
|
.parent(o.items)
|
|
.attr(o.attribute || 'id'))
|
|
.match(o.expression || (/(.+)[-=_](.+)/));
|
|
pid = parentItem[2];
|
|
}
|
|
|
|
if (id) {
|
|
ret.push({"item_id": id[2], "parent_id": pid, "depth": depth, "left": left, "right": right});
|
|
}
|
|
|
|
left = right + 1;
|
|
return left;
|
|
}
|
|
|
|
},
|
|
|
|
_clearEmpty: function(item) {
|
|
var o = this.options;
|
|
|
|
var emptyList = $(item).children(o.listType);
|
|
|
|
if (emptyList.length && !emptyList.children().length && !o.doNotClear) {
|
|
o.isTree && $(item).removeClass(o.branchClass + ' ' + o.expandedClass).addClass(o.leafClass);
|
|
emptyList.remove();
|
|
} else if (o.isTree && emptyList.length && emptyList.children().length && emptyList.is(':visible')) {
|
|
$(item).removeClass(o.leafClass).addClass(o.branchClass + ' ' + o.expandedClass);
|
|
} else if (o.isTree && emptyList.length && emptyList.children().length && !emptyList.is(':visible')) {
|
|
$(item).removeClass(o.leafClass).addClass(o.branchClass + ' ' + o.collapsedClass);
|
|
}
|
|
|
|
},
|
|
|
|
_getLevel: function(item) {
|
|
|
|
var level = 1;
|
|
|
|
if (this.options.listType) {
|
|
var list = item.closest(this.options.listType);
|
|
while (list && list.length > 0 &&
|
|
!list.is('.ui-sortable')) {
|
|
level++;
|
|
list = list.parent().closest(this.options.listType);
|
|
}
|
|
}
|
|
|
|
return level;
|
|
},
|
|
|
|
_getChildLevels: function(parent, depth) {
|
|
var self = this,
|
|
o = this.options,
|
|
result = 0;
|
|
depth = depth || 0;
|
|
|
|
$(parent).children(o.listType).children(o.items).each(function (index, child) {
|
|
result = Math.max(self._getChildLevels(child, depth + 1), result);
|
|
});
|
|
|
|
return depth ? result + 1 : result;
|
|
},
|
|
|
|
_isAllowed: function(parentItem, level, levels) {
|
|
var o = this.options,
|
|
maxLevels = this.placeholder.closest('.ui-sortable').nestedSortable('option', 'maxLevels'); // this takes into account the maxLevels set to the recipient list
|
|
|
|
// mjs - is the root protected?
|
|
// mjs - are we nesting too deep?
|
|
if ( ! o.isAllowed(this.placeholder, parentItem, this.currentItem)) {
|
|
this.placeholder.addClass(o.errorClass);
|
|
if (maxLevels < levels && maxLevels != 0) {
|
|
this.beyondMaxLevels = levels - maxLevels;
|
|
} else {
|
|
this.beyondMaxLevels = 1;
|
|
}
|
|
} else {
|
|
if (maxLevels < levels && maxLevels != 0) {
|
|
this.placeholder.addClass(o.errorClass);
|
|
this.beyondMaxLevels = levels - maxLevels;
|
|
} else {
|
|
this.placeholder.removeClass(o.errorClass);
|
|
this.beyondMaxLevels = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
}));
|
|
|
|
$.mjs.nestedSortable.prototype.options = $.extend({}, $.ui.sortable.prototype.options, $.mjs.nestedSortable.prototype.options);
|
|
})(jQuery); |