1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
/*
* jQuery UI Droppable 1.7.2
*
* Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* http://docs.jquery.com/UI/Droppables
*
* Depends:
* ui.core.js
* ui.draggable.js
*/
(function($) {
$.widget("ui.droppable", {
_init: function() {
var o = this.options, accept = o.accept;
this.isover = 0; this.isout = 1;
this.options.accept = this.options.accept && $.isFunction(this.options.accept) ? this.options.accept : function(d) {
return d.is(accept);
};
//Store the droppable's proportions
this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight };
// Add the reference and positions to the manager
$.ui.ddmanager.droppables[this.options.scope] = $.ui.ddmanager.droppables[this.options.scope] || [];
$.ui.ddmanager.droppables[this.options.scope].push(this);
(this.options.addClasses && this.element.addClass("ui-droppable"));
},
destroy: function() {
var drop = $.ui.ddmanager.droppables[this.options.scope];
for ( var i = 0; i < drop.length; i++ )
if ( drop[i] == this )
drop.splice(i, 1);
this.element
.removeClass("ui-droppable ui-droppable-disabled")
.removeData("droppable")
.unbind(".droppable");
},
_setData: function(key, value) {
if(key == 'accept') {
this.options.accept = value && $.isFunction(value) ? value : function(d) {
return d.is(value);
};
} else {
$.widget.prototype._setData.apply(this, arguments);
}
},
_activate: function(event) {
var draggable = $.ui.ddmanager.current;
if(this.options.activeClass) this.element.addClass(this.options.activeClass);
(draggable && this._trigger('activate', event, this.ui(draggable)));
},
_deactivate: function(event) {
var draggable = $.ui.ddmanager.current;
if(this.options.activeClass) this.element.removeClass(this.options.activeClass);
(draggable && this._trigger('deactivate', event, this.ui(draggable)));
},
_over: function(event) {
var draggable = $.ui.ddmanager.current;
if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element
if (this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
if(this.options.hoverClass) this.element.addClass(this.options.hoverClass);
this._trigger('over', event, this.ui(draggable));
}
},
_out: function(event) {
var draggable = $.ui.ddmanager.current;
if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element
if (this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass);
this._trigger('out', event, this.ui(draggable));
}
},
_drop: function(event,custom) {
var draggable = custom || $.ui.ddmanager.current;
if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return false; // Bail if draggable and droppable are same element
var childrenIntersection = false;
this.element.find(":data(droppable)").not(".ui-draggable-dragging").each(function() {
var inst = $.data(this, 'droppable');
if(inst.options.greedy && $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)) {
childrenIntersection = true; return false;
}
});
if(childrenIntersection) return false;
if(this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
if(this.options.activeClass) this.element.removeClass(this.options.activeClass);
if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass);
this._trigger('drop', event, this.ui(draggable));
return this.element;
}
return false;
},
ui: function(c) {
return {
draggable: (c.currentItem || c.element),
helper: c.helper,
position: c.position,
absolutePosition: c.positionAbs, //deprecated
offset: c.positionAbs
};
}
});
$.extend($.ui.droppable, {
version: "1.7.2",
eventPrefix: 'drop',
defaults: {
accept: '*',
activeClass: false,
addClasses: true,
greedy: false,
hoverClass: false,
scope: 'default',
tolerance: 'intersect'
}
});
$.ui.intersect = function(draggable, droppable, toleranceMode) {
if (!droppable.offset) return false;
var x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width,
y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height;
var l = droppable.offset.left, r = l + droppable.proportions.width,
t = droppable.offset.top, b = t + droppable.proportions.height;
switch (toleranceMode) {
case 'fit':
return (l < x1 && x2 < r
&& t < y1 && y2 < b);
break;
case 'intersect':
return (l < x1 + (draggable.helperProportions.width / 2) // Right Half
&& x2 - (draggable.helperProportions.width / 2) < r // Left Half
&& t < y1 + (draggable.helperProportions.height / 2) // Bottom Half
&& y2 - (draggable.helperProportions.height / 2) < b ); // Top Half
break;
case 'pointer':
var draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left),
draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top),
isOver = $.ui.isOver(draggableTop, draggableLeft, t, l, droppable.proportions.height, droppable.proportions.width);
return isOver;
break;
case 'touch':
return (
(y1 >= t && y1 <= b) || // Top edge touching
(y2 >= t && y2 <= b) || // Bottom edge touching
(y1 < t && y2 > b) // Surrounded vertically
) && (
(x1 >= l && x1 <= r) || // Left edge touching
(x2 >= l && x2 <= r) || // Right edge touching
(x1 < l && x2 > r) // Surrounded horizontally
);
break;
default:
return false;
break;
}
};
/*
This manager tracks offsets of draggables and droppables
*/
$.ui.ddmanager = {
current: null,
droppables: { 'default': [] },
prepareOffsets: function(t, event) {
var m = $.ui.ddmanager.droppables[t.options.scope];
var type = event ? event.type : null; // workaround for #2317
var list = (t.currentItem || t.element).find(":data(droppable)").andSelf();
droppablesLoop: for (var i = 0; i < m.length; i++) {
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
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
m[i].visible = m[i].element.css("display") != "none"; if(!m[i].visible) continue; //If the element is not visible, continue
m[i].offset = m[i].element.offset();
m[i].proportions = { width: m[i].element[0].offsetWidth, height: m[i].element[0].offsetHeight };
if(type == "mousedown") m[i]._activate.call(m[i], event); //Activate the droppable if used directly from draggables
}
},
drop: function(draggable, event) {
var dropped = false;
$.each($.ui.ddmanager.droppables[draggable.options.scope], function() {
if(!this.options) return;
if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance))
dropped = this._drop.call(this, event);
if (!this.options.disabled && this.visible && this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
this.isout = 1; this.isover = 0;
this._deactivate.call(this, event);
}
});
return dropped;
},
drag: function(draggable, event) {
//If you have a highly dynamic page, you might try this option. It renders positions every time you move the mouse.
if(draggable.options.refreshPositions) $.ui.ddmanager.prepareOffsets(draggable, event);
//Run through all droppables and check their positions based on specific tolerance options
$.each($.ui.ddmanager.droppables[draggable.options.scope], function() {
if(this.options.disabled || this.greedyChild || !this.visible) return;
var intersects = $.ui.intersect(draggable, this, this.options.tolerance);
var c = !intersects && this.isover == 1 ? 'isout' : (intersects && this.isover == 0 ? 'isover' : null);
if(!c) return;
var parentInstance;
if (this.options.greedy) {
var parent = this.element.parents(':data(droppable):eq(0)');
if (parent.length) {
parentInstance = $.data(parent[0], 'droppable');
parentInstance.greedyChild = (c == 'isover' ? 1 : 0);
}
}
// we just moved into a greedy child
if (parentInstance && c == 'isover') {
parentInstance['isover'] = 0;
parentInstance['isout'] = 1;
parentInstance._out.call(parentInstance, event);
}
this[c] = 1; this[c == 'isout' ? 'isover' : 'isout'] = 0;
this[c == "isover" ? "_over" : "_out"].call(this, event);
// we just moved out of a greedy child
if (parentInstance && c == 'isout') {
parentInstance['isout'] = 0;
parentInstance['isover'] = 1;
parentInstance._over.call(parentInstance, event);
}
});
}
};
})(jQuery);
|
