379 lines
13 KiB
JavaScript
Executable File
379 lines
13 KiB
JavaScript
Executable File
/*
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* jQuery UI Sortable
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*
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* Copyright (c) 2008 Paul Bakaus
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* http://docs.jquery.com/UI/Sortables
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*
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* Depends:
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* ui.base.js
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*
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* Revision: $Id: jquery.treeview.sortable.js 7674 2011-07-21 09:34:44Z aFolletete $
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*/
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;(function($) {
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if (window.Node && Node.prototype && !Node.prototype.contains) {
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Node.prototype.contains = function (arg) {
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return !!(this.compareDocumentPosition(arg) & 16);
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};
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}
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$.widget("ui.sortableTree", $.extend($.ui.mouse, {
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init: function() {
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//Initialize needed constants
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var self = this, o = this.options;
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this.containerCache = {};
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this.element.addClass("ui-sortableTree");
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//Get the items
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this.refresh();
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//Let's determine the parent's offset
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if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
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this.offset = this.element.offset();
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//Initialize mouse events for interaction
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this.mouseInit();
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//Prepare cursorAt
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if(o.cursorAt && o.cursorAt.constructor == Array)
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o.cursorAt = { left: o.cursorAt[0], top: o.cursorAt[1] };
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},
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plugins: {},
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ui: function(inst) {
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return {
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helper: (inst || this)["helper"],
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position: (inst || this)["position"].current,
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absolutePosition: (inst || this)["position"].absolute,
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instance: this,
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options: this.options,
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element: this.element,
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item: (inst || this)["currentItem"],
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sender: inst ? inst.element : null
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};
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},
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propagate: function(n,e,inst) {
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$.ui.plugin.call(this, n, [e, this.ui(inst)]);
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this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
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},
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serialize: function(o) {
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var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
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var str = []; o = o || {};
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items.each(function() {
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var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
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if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
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});
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return str.join('&');
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},
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toArray: function(attr) {
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var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
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var ret = [];
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items.each(function() { ret.push($(this).attr(attr || 'id')); });
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return ret;
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},
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enable: function() {
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this.element.removeClass("ui-sortableTree-disabled");
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this.options.disabled = false;
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},
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disable: function() {
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this.element.addClass("ui-sortableTree-disabled");
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this.options.disabled = true;
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},
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/* Be careful with the following core functions */
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intersectsWith: function(item) {
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var x1 = this.position.absolute.left - 10, x2 = x1 + 10,
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y1 = this.position.absolute.top - 10, y2 = y1 + 10;
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var l = item.left, r = l + item.width,
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t = item.top, b = t + item.height;
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return ( l < x1 + (this.helperProportions.width / 2) // Right Half
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&& x2 - (this.helperProportions.width / 2) < r // Left Half
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&& t < y1 + (this.helperProportions.height / 2) // Bottom Half
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&& y2 - (this.helperProportions.height / 2) < b ); // Top Half
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},
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intersectsWithEdge: function(item) {
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var y1 = this.position.absolute.top - 10, y2 = y1 + 10;
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var t = item.top, b = t + item.height;
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if(!this.intersectsWith(item.item.parents(".ui-sortableTree").data("sortableTree").containerCache)) return false;
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if (!( t < y1 + (this.helperProportions.height / 2) // Bottom Half
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&& y2 - (this.helperProportions.height / 2) < b )) return false; // Top Half
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if(y2 > t && y1 < t) return 1; //Crosses top edge
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if(y1 < b && y2 > b) return 2; //Crosses bottom edge
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return false;
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},
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refresh: function() {
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this.refreshItems();
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this.refreshPositions();
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},
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refreshItems: function() {
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this.items = [];
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this.containers = [this];
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var items = this.items;
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var queries = [$(this.options.items, this.element)];
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if(this.options.connectWith) {
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for (var i = this.options.connectWith.length - 1; i >= 0; i--){
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var cur = $(this.options.connectWith[i]);
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for (var j = cur.length - 1; j >= 0; j--){
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var inst = $.data(cur[j], 'sortableTree');
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if(inst && !inst.options.disabled) {
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queries.push($(inst.options.items, inst.element));
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this.containers.push(inst);
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}
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};
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};
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}
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for (var i = queries.length - 1; i >= 0; i--){
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queries[i].each(function() {
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$.data(this, 'sortableTree-item', true); // Data for target checking (mouse manager)
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items.push({
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item: $(this),
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width: 0, height: 0,
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left: 0, top: 0
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});
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});
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};
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},
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refreshPositions: function(fast) {
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for (var i = this.items.length - 1; i >= 0; i--){
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if(!fast) this.items[i].height = this.items[i].item.outerHeight();
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this.items[i].top = this.items[i].item.offset().top;
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};
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for (var i = this.containers.length - 1; i >= 0; i--){
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var p =this.containers[i].element.offset();
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this.containers[i].containerCache.left = p.left;
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this.containers[i].containerCache.top = p.top;
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this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
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this.containers[i].containerCache.height= this.containers[i].element.outerHeight();
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};
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},
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destroy: function() {
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this.element
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.removeClass("ui-sortableTree ui-sortableTree-disabled")
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.removeData("sortableTree")
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.unbind(".sortableTree");
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this.mouseDestroy();
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for ( var i = this.items.length - 1; i >= 0; i-- )
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this.items[i].item.removeData("sortableTree-item");
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},
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contactContainers: function(e) {
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for (var i = this.containers.length - 1; i >= 0; i--){
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if(this.intersectsWith(this.containers[i].containerCache)) {
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if(!this.containers[i].containerCache.over) {
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if(this.currentContainer != this.containers[i]) {
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//When entering a new container, we will find the item with the least distance and append our item near it
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var dist = 10000; var itemWithLeastDistance = null; var base = this.position.absolute.top;
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for (var j = this.items.length - 1; j >= 0; j--) {
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if(!this.containers[i].element[0].contains(this.items[j].item[0])) continue;
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var cur = this.items[j].top;
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if(Math.abs(cur - base) < dist) {
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dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
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}
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}
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itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance) : this.rearrange(e, null, this.containers[i].element);
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this.propagate("change", e); //Call plugins and callbacks
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this.containers[i].propagate("change", e, this); //Call plugins and callbacks
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this.currentContainer = this.containers[i];
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}
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this.containers[i].propagate("over", e, this);
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this.containers[i].containerCache.over = 1;
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}
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} else {
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if(this.containers[i].containerCache.over) {
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this.containers[i].propagate("out", e, this);
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this.containers[i].containerCache.over = 0;
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}
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}
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};
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},
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mouseStart: function(e,el) {
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if(this.options.disabled || this.options.type == 'static') return false;
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//Find out if the clicked node (or one of its parents) is a actual item in this.items
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var currentItem = null, nodes = $(e.target).parents().each(function() {
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if($.data(this, 'sortableTree-item')) {
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currentItem = $(this);
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return false;
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}
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});
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if($.data(e.target, 'sortableTree-item')) currentItem = $(e.target);
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if(!currentItem) return false;
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if(this.options.handle) {
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var validHandle = false;
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$(this.options.handle, currentItem).each(function() { if(this == e.target) validHandle = true; });
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if(!validHandle) return false;
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}
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this.currentItem = currentItem;
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var o = this.options;
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this.currentContainer = this;
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this.refresh();
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//Create and append the visible helper
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this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
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if(!this.helper.parents('body').length) this.helper.appendTo("body"); //Add the helper to the DOM if that didn't happen already
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this.helper.css({ position: 'absolute', clear: 'both' }).addClass('ui-sortableTree-helper'); //Position it absolutely and add a helper class
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//Prepare variables for position generation
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$.extend(this, {
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offsetParent: this.helper.offsetParent(),
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offsets: { absolute: this.currentItem.offset() }
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});
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//Save the first time position
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$.extend(this, {
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position: {
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current: { left: e.pageX, top: e.pageY },
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absolute: { left: e.pageX, top: e.pageY },
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dom: this.currentItem.prev()[0]
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},
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clickOffset: { left: -5, top: -5 }
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});
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this.propagate("start", e); //Call plugins and callbacks
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this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; //Save and store the helper proportions
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for (var i = this.containers.length - 1; i >= 0; i--) {
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this.containers[i].propagate("activate", e, this);
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} //Post 'activate' events to possible containers
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//Prepare possible droppables
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if($.ui.ddmanager) $.ui.ddmanager.current = this;
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if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);
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this.dragging = true;
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return true;
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},
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mouseStop: function(e) {
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if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt); //remove sort indicator
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this.propagate("stop", e); //Call plugins and trigger callbacks
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//If we are using droppables, inform the manager about the drop
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var dropped = ($.ui.ddmanager && !this.options.dropBehaviour) ? $.ui.ddmanager.drop(this, e) : false;
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if(!dropped && this.newPositionAt) this.newPositionAt[this.direction == 'down' ? 'before' : 'after'](this.currentItem); //Append to element to its new position
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if(this.position.dom != this.currentItem.prev()[0]) this.propagate("update", e); //Trigger update callback if the DOM position has changed
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if(!this.element[0].contains(this.currentItem[0])) { //Node was moved out of the current element
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this.propagate("remove", e);
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for (var i = this.containers.length - 1; i >= 0; i--){
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if(this.containers[i].element[0].contains(this.currentItem[0])) {
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this.containers[i].propagate("update", e, this);
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this.containers[i].propagate("receive", e, this);
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}
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};
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};
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//Post events to containers
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for (var i = this.containers.length - 1; i >= 0; i--){
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this.containers[i].propagate("deactivate", e, this);
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if(this.containers[i].containerCache.over) {
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this.containers[i].propagate("out", e, this);
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this.containers[i].containerCache.over = 0;
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}
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}
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this.dragging = false;
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if(this.cancelHelperRemoval) return false;
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this.helper.remove();
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return false;
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},
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mouseDrag: function(e) {
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//Compute the helpers position
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this.position.current = { top: e.pageY + 5, left: e.pageX + 5 };
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this.position.absolute = { left: e.pageX + 5, top: e.pageY + 5 };
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//Interconnect with droppables
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if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
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var intersectsWithDroppable = false;
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$.each($.ui.ddmanager.droppables, function() {
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if(this.isover) intersectsWithDroppable = true;
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});
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//Rearrange
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if(intersectsWithDroppable) {
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if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
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} else {
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for (var i = this.items.length - 1; i >= 0; i--) {
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if(this.currentItem[0].contains(this.items[i].item[0])) continue;
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var intersection = this.intersectsWithEdge(this.items[i]);
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if(!intersection) continue;
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this.direction = intersection == 1 ? "down" : "up";
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this.rearrange(e, this.items[i]);
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this.propagate("change", e); //Call plugins and callbacks
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break;
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}
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}
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//Post events to containers
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this.contactContainers(e);
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this.propagate("sort", e); //Call plugins and callbacks
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this.helper.css({ left: this.position.current.left+'px', top: this.position.current.top+'px' }); // Stick the helper to the cursor
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return false;
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},
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rearrange: function(e, i, a) {
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if(i) {
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if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
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this.newPositionAt = i.item;
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this.options.sortIndication[this.direction].call(this.currentItem, this.newPositionAt);
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} else {
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//Append
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}
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}
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}));
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$.extend($.ui.sortableTree, {
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defaults: {
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items: '> *',
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zIndex: 1000,
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distance: 1
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},
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getter: "serialize toArray"
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});
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})(jQuery);
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