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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