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1/*
2 * jQuery UI Droppable 1.7.2
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($.ui.droppable, {
136 version: "1.7.2",
137 eventPrefix: 'drop',
138 defaults: {
139 accept: '*',
140 activeClass: false,
141 addClasses: true,
142 greedy: false,
143 hoverClass: false,
144 scope: 'default',
145 tolerance: 'intersect'
146 }
147});
148
149$.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);
© 2015 Mike Crute