| 1 | /*
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| 2 | * jQuery UI Sortable
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| 3 | *
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| 4 | * Copyright (c) 2008 Paul Bakaus
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| 5 | * Dual licensed under the MIT (MIT-LICENSE.txt)
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| 6 | * and GPL (GPL-LICENSE.txt) licenses.
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| 7 | *
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| 8 | * http://docs.jquery.com/UI/Sortables
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| 9 | *
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| 10 | * Depends:
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| 11 | * ui.base.js
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| 12 | *
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| 13 | * Revision: $Id: ui.sortable.js 5262 2008-04-17 13:13:51Z paul.bakaus $
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| 14 | */
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| 15 | ;(function($) {
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| 16 |
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| 17 | if (window.Node && Node.prototype && !Node.prototype.contains) {
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| 18 | Node.prototype.contains = function (arg) {
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| 19 | return !!(this.compareDocumentPosition(arg) & 16);
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| 20 | };
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| 21 | }
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| 22 |
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| 23 |
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| 24 | $.widget("ui.sortableTree", $.extend($.ui.mouse, {
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| 25 | init: function() {
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| 26 |
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| 27 | //Initialize needed constants
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| 28 | var self = this, o = this.options;
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| 29 | this.containerCache = {};
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| 30 | this.element.addClass("ui-sortableTree");
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| 31 |
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| 32 | //Get the items
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| 33 | this.refresh();
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| 34 |
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| 35 | //Let's determine the parent's offset
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| 36 | if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
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| 37 | this.offset = this.element.offset();
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| 38 |
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| 39 | //Initialize mouse events for interaction
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| 40 | this.mouseInit();
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| 41 |
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| 42 | //Prepare cursorAt
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| 43 | if(o.cursorAt && o.cursorAt.constructor == Array)
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| 44 | o.cursorAt = { left: o.cursorAt[0], top: o.cursorAt[1] };
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| 45 |
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| 46 | },
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| 47 | plugins: {},
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| 48 | ui: function(inst) {
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| 49 | return {
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| 50 | helper: (inst || this)["helper"],
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| 51 | position: (inst || this)["position"].current,
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| 52 | absolutePosition: (inst || this)["position"].absolute,
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| 53 | instance: this,
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| 54 | options: this.options,
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| 55 | element: this.element,
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| 56 | item: (inst || this)["currentItem"],
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| 57 | sender: inst ? inst.element : null
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| 58 | };
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| 59 | },
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| 60 | propagate: function(n,e,inst) {
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| 61 | $.ui.plugin.call(this, n, [e, this.ui(inst)]);
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| 62 | this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
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| 63 | },
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| 64 | serialize: function(o) {
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| 65 |
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| 66 | var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
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| 67 | var str = []; o = o || {};
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| 68 |
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| 69 | items.each(function() {
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| 70 | var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
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| 71 | if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
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| 72 | });
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| 73 |
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| 74 | return str.join('&');
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| 75 |
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| 76 | },
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| 77 | toArray: function(attr) {
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| 78 | var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
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| 79 | var ret = [];
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| 80 |
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| 81 | items.each(function() { ret.push($(this).attr(attr || 'id')); });
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| 82 | return ret;
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| 83 | },
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| 84 | enable: function() {
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| 85 | this.element.removeClass("ui-sortableTree-disabled");
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| 86 | this.options.disabled = false;
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| 87 | },
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| 88 | disable: function() {
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| 89 | this.element.addClass("ui-sortableTree-disabled");
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| 90 | this.options.disabled = true;
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| 91 | },
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| 92 | /* Be careful with the following core functions */
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| 93 | intersectsWith: function(item) {
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| 94 |
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| 95 | var x1 = this.position.absolute.left - 10, x2 = x1 + 10,
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| 96 | y1 = this.position.absolute.top - 10, y2 = y1 + 10;
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| 97 | var l = item.left, r = l + item.width,
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| 98 | t = item.top, b = t + item.height;
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| 99 |
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| 100 | return ( l < x1 + (this.helperProportions.width / 2) // Right Half
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| 101 | && x2 - (this.helperProportions.width / 2) < r // Left Half
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| 102 | && t < y1 + (this.helperProportions.height / 2) // Bottom Half
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| 103 | && y2 - (this.helperProportions.height / 2) < b ); // Top Half
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| 104 |
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| 105 | },
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| 106 | intersectsWithEdge: function(item) {
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| 107 | var y1 = this.position.absolute.top - 10, y2 = y1 + 10;
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| 108 | var t = item.top, b = t + item.height;
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| 109 |
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| 110 | if(!this.intersectsWith(item.item.parents(".ui-sortableTree").data("sortableTree").containerCache)) return false;
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| 111 |
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| 112 | if (!( t < y1 + (this.helperProportions.height / 2) // Bottom Half
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| 113 | && y2 - (this.helperProportions.height / 2) < b )) return false; // Top Half
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| 114 |
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| 115 | if(y2 > t && y1 < t) return 1; //Crosses top edge
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| 116 | if(y1 < b && y2 > b) return 2; //Crosses bottom edge
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| 117 |
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| 118 | return false;
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| 119 |
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| 120 | },
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| 121 | refresh: function() {
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| 122 | this.refreshItems();
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| 123 | this.refreshPositions();
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| 124 | },
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| 125 | refreshItems: function() {
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| 126 |
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| 127 | this.items = [];
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| 128 | this.containers = [this];
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| 129 | var items = this.items;
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| 130 | var queries = [$(this.options.items, this.element)];
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| 131 |
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| 132 | if(this.options.connectWith) {
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| 133 | for (var i = this.options.connectWith.length - 1; i >= 0; i--){
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| 134 | var cur = $(this.options.connectWith[i]);
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| 135 | for (var j = cur.length - 1; j >= 0; j--){
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| 136 | var inst = $.data(cur[j], 'sortableTree');
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| 137 | if(inst && !inst.options.disabled) {
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| 138 | queries.push($(inst.options.items, inst.element));
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| 139 | this.containers.push(inst);
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| 140 | }
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| 141 | };
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| 142 | };
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| 143 | }
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| 144 |
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| 145 | for (var i = queries.length - 1; i >= 0; i--){
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| 146 | queries[i].each(function() {
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| 147 | $.data(this, 'sortableTree-item', true); // Data for target checking (mouse manager)
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| 148 | items.push({
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| 149 | item: $(this),
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| 150 | width: 0, height: 0,
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| 151 | left: 0, top: 0
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| 152 | });
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| 153 | });
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| 154 | };
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| 155 |
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| 156 | },
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| 157 | refreshPositions: function(fast) {
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| 158 | for (var i = this.items.length - 1; i >= 0; i--){
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| 159 | if(!fast) this.items[i].height = this.items[i].item.outerHeight();
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| 160 | this.items[i].top = this.items[i].item.offset().top;
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| 161 | };
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| 162 | for (var i = this.containers.length - 1; i >= 0; i--){
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| 163 | var p =this.containers[i].element.offset();
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| 164 | this.containers[i].containerCache.left = p.left;
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| 165 | this.containers[i].containerCache.top = p.top;
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| 166 | this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
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| 167 | this.containers[i].containerCache.height= this.containers[i].element.outerHeight();
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| 168 | };
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| 169 | },
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| 170 | destroy: function() {
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| 171 |
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| 172 | this.element
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| 173 | .removeClass("ui-sortableTree ui-sortableTree-disabled")
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| 174 | .removeData("sortableTree")
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| 175 | .unbind(".sortableTree");
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| 176 | this.mouseDestroy();
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| 177 |
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| 178 | for ( var i = this.items.length - 1; i >= 0; i-- )
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| 179 | this.items[i].item.removeData("sortableTree-item");
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| 180 |
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| 181 | },
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| 182 | contactContainers: function(e) {
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| 183 | for (var i = this.containers.length - 1; i >= 0; i--){
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| 184 |
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| 185 | if(this.intersectsWith(this.containers[i].containerCache)) {
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| 186 | if(!this.containers[i].containerCache.over) {
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| 187 |
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| 188 | if(this.currentContainer != this.containers[i]) {
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| 189 |
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| 190 | //When entering a new container, we will find the item with the least distance and append our item near it
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| 191 | var dist = 10000; var itemWithLeastDistance = null; var base = this.position.absolute.top;
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| 192 | for (var j = this.items.length - 1; j >= 0; j--) {
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| 193 | if(!this.containers[i].element[0].contains(this.items[j].item[0])) continue;
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| 194 | var cur = this.items[j].top;
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| 195 | if(Math.abs(cur - base) < dist) {
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| 196 | dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
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| 197 | }
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| 198 | }
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| 199 |
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| 200 | itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance) : this.rearrange(e, null, this.containers[i].element);
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| 201 | this.propagate("change", e); //Call plugins and callbacks
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| 202 | this.containers[i].propagate("change", e, this); //Call plugins and callbacks
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| 203 | this.currentContainer = this.containers[i];
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| 204 |
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| 205 | }
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| 206 |
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| 207 | this.containers[i].propagate("over", e, this);
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| 208 | this.containers[i].containerCache.over = 1;
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| 209 | }
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| 210 | } else {
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| 211 | if(this.containers[i].containerCache.over) {
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| 212 | this.containers[i].propagate("out", e, this);
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| 213 | this.containers[i].containerCache.over = 0;
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| 214 | }
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| 215 | }
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| 216 |
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| 217 | };
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| 218 | },
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| 219 | mouseStart: function(e,el) {
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| 220 |
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| 221 | if(this.options.disabled || this.options.type == 'static') return false;
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| 222 |
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| 223 | //Find out if the clicked node (or one of its parents) is a actual item in this.items
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| 224 | var currentItem = null, nodes = $(e.target).parents().each(function() {
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| 225 | if($.data(this, 'sortableTree-item')) {
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| 226 | currentItem = $(this);
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| 227 | return false;
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| 228 | }
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| 229 | });
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| 230 | if($.data(e.target, 'sortableTree-item')) currentItem = $(e.target);
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| 231 |
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| 232 | if(!currentItem) return false;
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| 233 | if(this.options.handle) {
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| 234 | var validHandle = false;
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| 235 | $(this.options.handle, currentItem).each(function() { if(this == e.target) validHandle = true; });
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| 236 | if(!validHandle) return false;
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| 237 | }
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| 238 |
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| 239 | this.currentItem = currentItem;
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| 240 |
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| 241 | var o = this.options;
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| 242 | this.currentContainer = this;
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| 243 | this.refresh();
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| 244 |
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| 245 | //Create and append the visible helper
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| 246 | this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
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| 247 | 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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| 248 | this.helper.css({ position: 'absolute', clear: 'both' }).addClass('ui-sortableTree-helper'); //Position it absolutely and add a helper class
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| 249 |
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| 250 | //Prepare variables for position generation
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| 251 | $.extend(this, {
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| 252 | offsetParent: this.helper.offsetParent(),
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| 253 | offsets: { absolute: this.currentItem.offset() }
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| 254 | });
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| 255 |
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| 256 | //Save the first time position
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| 257 | $.extend(this, {
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| 258 | position: {
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| 259 | current: { left: e.pageX, top: e.pageY },
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| 260 | absolute: { left: e.pageX, top: e.pageY },
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| 261 | dom: this.currentItem.prev()[0]
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| 262 | },
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| 263 | clickOffset: { left: -5, top: -5 }
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| 264 | });
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| 265 |
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| 266 | this.propagate("start", e); //Call plugins and callbacks
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| 267 | this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; //Save and store the helper proportions
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| 268 |
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| 269 | for (var i = this.containers.length - 1; i >= 0; i--) {
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| 270 | this.containers[i].propagate("activate", e, this);
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| 271 | } //Post 'activate' events to possible containers
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| 272 |
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| 273 | //Prepare possible droppables
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| 274 | if($.ui.ddmanager) $.ui.ddmanager.current = this;
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| 275 | if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);
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| 276 |
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| 277 | this.dragging = true;
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| 278 | return true;
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| 279 |
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| 280 | },
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| 281 | mouseStop: function(e) {
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| 282 |
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| 283 | if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt); //remove sort indicator
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| 284 | this.propagate("stop", e); //Call plugins and trigger callbacks
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| 285 |
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| 286 | //If we are using droppables, inform the manager about the drop
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| 287 | var dropped = ($.ui.ddmanager && !this.options.dropBehaviour) ? $.ui.ddmanager.drop(this, e) : false;
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| 288 | if(!dropped && this.newPositionAt) this.newPositionAt[this.direction == 'down' ? 'before' : 'after'](this.currentItem); //Append to element to its new position
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| 289 |
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| 290 | 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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| 291 | if(!this.element[0].contains(this.currentItem[0])) { //Node was moved out of the current element
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| 292 | this.propagate("remove", e);
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| 293 | for (var i = this.containers.length - 1; i >= 0; i--){
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| 294 | if(this.containers[i].element[0].contains(this.currentItem[0])) {
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| 295 | this.containers[i].propagate("update", e, this);
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| 296 | this.containers[i].propagate("receive", e, this);
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| 297 | }
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| 298 | };
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| 299 | };
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| 300 |
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| 301 | //Post events to containers
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| 302 | for (var i = this.containers.length - 1; i >= 0; i--){
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| 303 | this.containers[i].propagate("deactivate", e, this);
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| 304 | if(this.containers[i].containerCache.over) {
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| 305 | this.containers[i].propagate("out", e, this);
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| 306 | this.containers[i].containerCache.over = 0;
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| 307 | }
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| 308 | }
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| 309 |
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| 310 | this.dragging = false;
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| 311 | if(this.cancelHelperRemoval) return false;
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| 312 | this.helper.remove();
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| 313 |
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| 314 | return false;
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| 315 |
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| 316 | },
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| 317 | mouseDrag: function(e) {
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| 318 |
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| 319 | //Compute the helpers position
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| 320 | this.position.current = { top: e.pageY + 5, left: e.pageX + 5 };
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| 321 | this.position.absolute = { left: e.pageX + 5, top: e.pageY + 5 };
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| 322 |
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| 323 | //Interconnect with droppables
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| 324 | if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
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| 325 | var intersectsWithDroppable = false;
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| 326 | $.each($.ui.ddmanager.droppables, function() {
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| 327 | if(this.isover) intersectsWithDroppable = true;
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| 328 | });
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| 329 |
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| 330 | //Rearrange
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| 331 | if(intersectsWithDroppable) {
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| 332 | if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
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| 333 | } else {
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| 334 | for (var i = this.items.length - 1; i >= 0; i--) {
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| 335 |
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| 336 | if(this.currentItem[0].contains(this.items[i].item[0])) continue;
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| 337 |
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| 338 | var intersection = this.intersectsWithEdge(this.items[i]);
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| 339 | if(!intersection) continue;
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| 340 |
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| 341 | this.direction = intersection == 1 ? "down" : "up";
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| 342 | this.rearrange(e, this.items[i]);
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| 343 | this.propagate("change", e); //Call plugins and callbacks
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| 344 | break;
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| 345 | }
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| 346 | }
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| 347 |
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| 348 | //Post events to containers
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| 349 | this.contactContainers(e);
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| 350 |
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| 351 | this.propagate("sort", e); //Call plugins and callbacks
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| 352 | 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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| 353 | return false;
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| 354 |
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| 355 | },
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| 356 | rearrange: function(e, i, a) {
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| 357 | if(i) {
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| 358 | if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
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| 359 | this.newPositionAt = i.item;
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| 360 | this.options.sortIndication[this.direction].call(this.currentItem, this.newPositionAt);
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| 361 | } else {
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| 362 | //Append
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| 363 | }
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| 364 | }
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| 365 | }));
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| 366 |
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| 367 | $.extend($.ui.sortableTree, {
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| 368 | defaults: {
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| 369 | items: '> *',
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| 370 | zIndex: 1000,
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| 371 | distance: 1
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| 372 | },
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| 373 | getter: "serialize toArray"
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| 374 | });
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| 375 |
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| 376 |
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| 377 |
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| 378 | })(jQuery);
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