js2/mwEmbed/jquery/jquery.ui/ui/ui.droppable.js

   1 /*
   2  * jQuery UI Droppable 1.7.1
   3  *
   4  * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
   5  * Dual licensed under the MIT (MIT-LICENSE.txt)
   6  * and GPL (GPL-LICENSE.txt) licenses.
   7  *
   8  * http://docs.jquery.com/UI/Droppables
   9  *
  10  * Depends:
  11  *      ui.core.js
  12  *      ui.draggable.js
  13  */
  14 (function($) {
  15
  16 $.widget("ui.droppable", {
  17
  18         _init: function() {
  19
  20                 var o = this.options, accept = o.accept;
  21                 this.isover = 0; this.isout = 1;
  22
  23                 this.options.accept = this.options.accept && $.isFunction(this.options.accept) ? this.options.accept : function(d) {
  24                         return d.is(accept);
  25                 };
  26
  27                 //Store the droppable's proportions
  28                 this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight };
  29
  30                 // Add the reference and positions to the manager
  31                 $.ui.ddmanager.droppables[this.options.scope] = $.ui.ddmanager.droppables[this.options.scope] || [];
  32                 $.ui.ddmanager.droppables[this.options.scope].push(this);
  33
  34                 (this.options.addClasses && this.element.addClass("ui-droppable"));
  35
  36         },
  37
  38         destroy: function() {
  39                 var drop = $.ui.ddmanager.droppables[this.options.scope];
  40                 for ( var i = 0; i < drop.length; i++ )
  41                         if ( drop[i] == this )
  42                                 drop.splice(i, 1);
  43
  44                 this.element
  45                         .removeClass("ui-droppable ui-droppable-disabled")
  46                         .removeData("droppable")
  47                         .unbind(".droppable");
  48         },
  49
  50         _setData: function(key, value) {
  51
  52                 if(key == 'accept') {
  53                         this.options.accept = value && $.isFunction(value) ? value : function(d) {
  54                                 return d.is(value);
  55                         };
  56                 } else {
  57                         $.widget.prototype._setData.apply(this, arguments);
  58                 }
  59
  60         },
  61
  62         _activate: function(event) {
  63                 var draggable = $.ui.ddmanager.current;
  64                 if(this.options.activeClass) this.element.addClass(this.options.activeClass);
  65                 (draggable && this._trigger('activate', event, this.ui(draggable)));
  66         },
  67
  68         _deactivate: function(event) {
  69                 var draggable = $.ui.ddmanager.current;
  70                 if(this.options.activeClass) this.element.removeClass(this.options.activeClass);
  71                 (draggable && this._trigger('deactivate', event, this.ui(draggable)));
  72         },
  73
  74         _over: function(event) {
  75
  76                 var draggable = $.ui.ddmanager.current;
  77                 if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element
  78
  79                 if (this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
  80                         if(this.options.hoverClass) this.element.addClass(this.options.hoverClass);
  81                         this._trigger('over', event, this.ui(draggable));
  82                 }
  83
  84         },
  85
  86         _out: function(event) {
  87
  88                 var draggable = $.ui.ddmanager.current;
  89                 if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element
  90
  91                 if (this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
  92                         if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass);
  93                         this._trigger('out', event, this.ui(draggable));
  94                 }
  95
  96         },
  97
  98         _drop: function(event,custom) {
  99
 100                 var draggable = custom || $.ui.ddmanager.current;
 101                 if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return false; // Bail if draggable and droppable are same element
 102
 103                 var childrenIntersection = false;
 104                 this.element.find(":data(droppable)").not(".ui-draggable-dragging").each(function() {
 105                         var inst = $.data(this, 'droppable');
 106                         if(inst.options.greedy && $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)) {
 107                                 childrenIntersection = true; return false;
 108                         }
 109                 });
 110                 if(childrenIntersection) return false;
 111
 112                 if(this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
 113                         if(this.options.activeClass) this.element.removeClass(this.options.activeClass);
 114                         if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass);
 115                         this._trigger('drop', event, this.ui(draggable));
 116                         return this.element;
 117                 }
 118
 119                 return false;
 120
 121         },
 122
 123         ui: function(c) {
 124                 return {
 125                         draggable: (c.currentItem || c.element),
 126                         helper: c.helper,
 127                         position: c.position,
 128                         absolutePosition: c.positionAbs, //deprecated
 129                         offset: c.positionAbs
 130                 };
 131         }
 132
 133 });
 134
 135 $.extend($.ui.droppable, {
 136         version: "1.7.1",
 137         eventPrefix: 'drop',
 138         defaults: {
 139                 accept: '*',
 140                 activeClass: false,
 141                 addClasses: true,
 142                 greedy: false,
 143                 hoverClass: false,
 144                 scope: 'default',
 145                 tolerance: 'intersect'
 146         }
 147 });
 148
 149 $.ui.intersect = function(draggable, droppable, toleranceMode) {
 150
 151         if (!droppable.offset) return false;
 152
 153         var x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width,
 154                 y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height;
 155         var l = droppable.offset.left, r = l + droppable.proportions.width,
 156                 t = droppable.offset.top, b = t + droppable.proportions.height;
 157
 158         switch (toleranceMode) {
 159                 case 'fit':
 160                         return (l < x1 && x2 < r
 161                                 && t < y1 && y2 < b);
 162                         break;
 163                 case 'intersect':
 164                         return (l < x1 + (draggable.helperProportions.width / 2) // Right Half
 165                                 && x2 - (draggable.helperProportions.width / 2) < r // Left Half
 166                                 && t < y1 + (draggable.helperProportions.height / 2) // Bottom Half
 167                                 && y2 - (draggable.helperProportions.height / 2) < b ); // Top Half
 168                         break;
 169                 case 'pointer':
 170                         var draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left),
 171                                 draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top),
 172                                 isOver = $.ui.isOver(draggableTop, draggableLeft, t, l, droppable.proportions.height, droppable.proportions.width);
 173                         return isOver;
 174                         break;
 175                 case 'touch':
 176                         return (
 177                                         (y1 >= t && y1 <= b) || // Top edge touching
 178                                         (y2 >= t && y2 <= b) || // Bottom edge touching
 179                                         (y1 < t && y2 > b)              // Surrounded vertically
 180                                 ) && (
 181                                         (x1 >= l && x1 <= r) || // Left edge touching
 182                                         (x2 >= l && x2 <= r) || // Right edge touching
 183                                         (x1 < l && x2 > r)              // Surrounded horizontally
 184                                 );
 185                         break;
 186                 default:
 187                         return false;
 188                         break;
 189                 }
 190
 191 };
 192
 193 /*
 194         This manager tracks offsets of draggables and droppables
 195 */
 196 $.ui.ddmanager = {
 197         current: null,
 198         droppables: { 'default': [] },
 199         prepareOffsets: function(t, event) {
 200
 201                 var m = $.ui.ddmanager.droppables[t.options.scope];
 202                 var type = event ? event.type : null; // workaround for #2317
 203                 var list = (t.currentItem || t.element).find(":data(droppable)").andSelf();
 204
 205                 droppablesLoop: for (var i = 0; i < m.length; i++) {
 206
 207                         if(m[i].options.disabled || (t && !m[i].options.accept.call(m[i].element[0],(t.currentItem || t.element)))) continue;   //No disabled and non-accepted
 208                         for (var j=0; j < list.length; j++) { if(list[j] == m[i].element[0]) { m[i].proportions.height = 0; continue droppablesLoop; } }; //Filter out elements in the current dragged item
 209                         m[i].visible = m[i].element.css("display") != "none"; if(!m[i].visible) continue;                                                                       //If the element is not visible, continue
 210
 211                         m[i].offset = m[i].element.offset();
 212                         m[i].proportions = { width: m[i].element[0].offsetWidth, height: m[i].element[0].offsetHeight };
 213
 214                         if(type == "mousedown") m[i]._activate.call(m[i], event); //Activate the droppable if used directly from draggables
 215
 216                 }
 217
 218         },
 219         drop: function(draggable, event) {
 220
 221                 var dropped = false;
 222                 $.each($.ui.ddmanager.droppables[draggable.options.scope], function() {
 223
 224                         if(!this.options) return;
 225                         if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance))
 226                                 dropped = this._drop.call(this, event);
 227
 228                         if (!this.options.disabled && this.visible && this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
 229                                 this.isout = 1; this.isover = 0;
 230                                 this._deactivate.call(this, event);
 231                         }
 232
 233                 });
 234                 return dropped;
 235
 236         },
 237         drag: function(draggable, event) {
 238
 239                 //If you have a highly dynamic page, you might try this option. It renders positions every time you move the mouse.
 240                 if(draggable.options.refreshPositions) $.ui.ddmanager.prepareOffsets(draggable, event);
 241
 242                 //Run through all droppables and check their positions based on specific tolerance options
 243
 244                 $.each($.ui.ddmanager.droppables[draggable.options.scope], function() {
 245
 246                         if(this.options.disabled || this.greedyChild || !this.visible) return;
 247                         var intersects = $.ui.intersect(draggable, this, this.options.tolerance);
 248
 249                         var c = !intersects && this.isover == 1 ? 'isout' : (intersects && this.isover == 0 ? 'isover' : null);
 250                         if(!c) return;
 251
 252                         var parentInstance;
 253                         if (this.options.greedy) {
 254                                 var parent = this.element.parents(':data(droppable):eq(0)');
 255                                 if (parent.length) {
 256                                         parentInstance = $.data(parent[0], 'droppable');
 257                                         parentInstance.greedyChild = (c == 'isover' ? 1 : 0);
 258                                 }
 259                         }
 260
 261                         // we just moved into a greedy child
 262                         if (parentInstance && c == 'isover') {
 263                                 parentInstance['isover'] = 0;
 264                                 parentInstance['isout'] = 1;
 265                                 parentInstance._out.call(parentInstance, event);
 266                         }
 267
 268                         this[c] = 1; this[c == 'isout' ? 'isover' : 'isout'] = 0;
 269                         this[c == "isover" ? "_over" : "_out"].call(this, event);
 270
 271                         // we just moved out of a greedy child
 272                         if (parentInstance && c == 'isout') {
 273                                 parentInstance['isout'] = 0;
 274                                 parentInstance['isover'] = 1;
 275                                 parentInstance._over.call(parentInstance, event);
 276                         }
 277                 });
 278
 279         }
 280 };
 281
 282 })(jQuery);