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
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
|
(function($) {
if (window.Node && Node.prototype && !Node.prototype.contains) {
Node.prototype.contains = function (arg) {
return !!(this.compareDocumentPosition(arg) & 16);
};
}
$.fn.extend({
sortable: function(options) {
var args = Array.prototype.slice.call(arguments, 1);
if ( options == "serialize" )
return $.data(this[0], "ui-sortable").serialize(arguments[1]);
return this.each(function() {
if (typeof options == "string") {
var sort = $.data(this, "ui-sortable");
sort[options].apply(sort, args);
} else if(!$.data(this, "ui-sortable"))
new $.ui.sortable(this, options);
});
}
});
$.ui.sortable = function(element, options) {
//Initialize needed constants
var self = this;
this.element = $(element);
$.data(element, "ui-sortable", this);
this.element.addClass("ui-sortable");
//Prepare the passed options
this.options = $.extend({}, options);
var o = this.options;
$.extend(o, {
items: this.options.items || '> *',
zIndex: this.options.zIndex || 1000,
startCondition: function() {
return !self.disabled;
}
});
$(element).bind("setData.sortable", function(event, key, value){
self.options[key] = value;
}).bind("getData.sortable", function(event, key){
return self.options[key];
});
//Get the items
this.refresh();
//Let's determine if the items are floating
this.floating = /left|right/.test(this.items[0].item.css('float'));
//Let's determine the parent's offset
if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
this.offset = this.element.offset({ border: false });
//Initialize mouse events for interaction
this.element.mouseInteraction({
executor: this,
delay: o.delay,
distance: o.distance || 0,
dragPrevention: o.prevention ? o.prevention.toLowerCase().split(',') : ['input','textarea','button','select','option'],
start: this.start,
stop: this.stop,
drag: this.drag,
condition: function(e) {
if(this.disabled) return false;
//Find out if the clicked node (or one of its parents) is a actual item in this.items
var currentItem = null, nodes = $(e.target).parents().andSelf().each(function() {
if($.data(this, 'ui-sortable-item')) currentItem = $(this);
});
if(currentItem && (!this.options.handle || $(e.target).parents().andSelf().is(this.options.handle))) {
this.currentItem = currentItem;
return true;
} else return false;
}
});
};
$.extend($.ui.sortable.prototype, {
plugins: {},
ui: function() {
return {
helper: this.helper,
placeholder: this.placeholder || $([]),
position: this.position,
absolutePosition: this.positionAbs,
instance: this,
options: this.options
};
},
propagate: function(n,e) {
$.ui.plugin.call(this, n, [e, this.ui()]);
this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui()], this.options[n]);
},
serialize: function(o) {
var items = $(this.options.items, this.element).not('.ui-sortable-helper'); //Only the items of the sortable itself
var str = [];
o = o || {};
items.each(function() {
var res = (this.getAttribute(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
});
return str.join('&');
},
intersectsWith: function(item) {
var x1 = this.positionAbs.left, x2 = x1 + this.helperProportions.width,
y1 = this.positionAbs.top, y2 = y1 + this.helperProportions.height;
var l = item.left, r = l + item.width,
t = item.top, b = t + item.height;
return ( l < x1 + (this.helperProportions.width / 2) // Right Half
&& x2 - (this.helperProportions.width / 2) < r // Left Half
&& t < y1 + (this.helperProportions.height / 2) // Bottom Half
&& y2 - (this.helperProportions.height / 2) < b ); // Top Half
},
refresh: function() {
this.items = [];
var items = this.items;
var queries = [$(this.options.items, this.element)];
if(this.options.connectWith) {
for (var i = this.options.connectWith.length - 1; i >= 0; i--){
var inst = $.data($(this.options.connectWith[i])[0], 'ui-sortable');
if(inst && !inst.disabled) queries.push($(inst.options.items, inst.element));
};
}
for (var i = queries.length - 1; i >= 0; i--){
queries[i].each(function() {
$.data(this, 'ui-sortable-item', true); // Data for target checking (mouse manager)
items.push({
item: $(this),
width: 0, height: 0,
left: 0, top: 0
});
});
};
},
refreshPositions: function(fast) {
for (var i = this.items.length - 1; i >= 0; i--){
if(!fast) this.items[i].width = this.items[i].item.outerWidth();
if(!fast) this.items[i].height = this.items[i].item.outerHeight();
var p = this.items[i].item.offset();
this.items[i].left = p.left;
this.items[i].top = p.top;
};
},
destroy: function() {
this.element
.removeClass("ui-sortable ui-sortable-disabled")
.removeData("ui-sortable")
.unbind(".sortable")
.removeMouseInteraction();
for ( var i = this.items.length - 1; i >= 0; i-- )
this.items[i].item.removeData("ui-sortable-item");
},
enable: function() {
this.element.removeClass("ui-sortable-disabled");
this.disabled = false;
},
disable: function() {
this.element.addClass("ui-sortable-disabled");
this.disabled = true;
},
createPlaceholder: function() {
this.placeholderElement = this.options.placeholderElement ? $(this.options.placeholderElement, this.currentItem) : this.currentItem;
this.placeholder = $('<div></div>')
.addClass(this.options.placeholder)
.appendTo('body')
.css({ position: 'absolute' })
.css(this.placeholderElement.offset())
.css({ width: this.placeholderElement.outerWidth(), height: this.placeholderElement.outerHeight() })
;
},
recallOffset: function(e) {
var elementPosition = { left: this.elementOffset.left - this.offsetParentOffset.left, top: this.elementOffset.top - this.offsetParentOffset.top };
var r = this.helper.css('position') == 'relative';
//Generate the original position
this.originalPosition = {
left: (r ? parseInt(this.helper.css('left'),10) || 0 : elementPosition.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft)),
top: (r ? parseInt(this.helper.css('top'),10) || 0 : elementPosition.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop))
};
//Generate a flexible offset that will later be subtracted from e.pageX/Y
this.offset = {
left: this._pageX - this.originalPosition.left + (parseInt(this.currentItem.css('marginLeft'),10) || 0),
top: this._pageY - this.originalPosition.top + (parseInt(this.currentItem.css('marginTop'),10) || 0)
};
},
start: function(e) {
var o = this.options;
//Refresh the droppable items
this.refresh(); this.refreshPositions();
//Create and append the visible helper
this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
this.helper.appendTo(this.currentItem[0].parentNode).css({ position: 'absolute', clear: 'both' }).addClass('ui-sortable-helper');
//Find out the next positioned parent
this.offsetParent = (function(cp) {
while(cp) {
if(cp.style && (/(absolute|relative|fixed)/).test($.css(cp,'position'))) return $(cp);
cp = cp.parentNode ? cp.parentNode : null;
}; return $("body");
})(this.helper[0].parentNode);
//Prepare variables for position generation
this.elementOffset = this.currentItem.offset();
this.offsetParentOffset = this.offsetParent.offset();
var elementPosition = { left: this.elementOffset.left - this.offsetParentOffset.left, top: this.elementOffset.top - this.offsetParentOffset.top };
this._pageX = e.pageX; this._pageY = e.pageY;
this.clickOffset = { left: e.pageX - this.elementOffset.left, top: e.pageY - this.elementOffset.top };
var r = this.helper.css('position') == 'relative';
//Generate the original position
this.originalPosition = {
left: (r ? parseInt(this.helper.css('left'),10) || 0 : elementPosition.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft)),
top: (r ? parseInt(this.helper.css('top'),10) || 0 : elementPosition.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop))
};
//Generate a flexible offset that will later be subtracted from e.pageX/Y
//I hate margins - they need to be removed before positioning the element absolutely..
this.offset = {
left: e.pageX - this.originalPosition.left + (parseInt(this.currentItem.css('marginLeft'),10) || 0),
top: e.pageY - this.originalPosition.top + (parseInt(this.currentItem.css('marginTop'),10) || 0)
};
//Save the first time position
this.position = { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left };
this.positionAbs = { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top };
this.positionDOM = this.currentItem.prev()[0];
//If o.placeholder is used, create a new element at the given position with the class
if(o.placeholder) this.createPlaceholder();
//Call plugins and callbacks
this.propagate("start", e);
//Save and store the helper proportions
this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };
//Set the original element visibility to hidden to still fill out the white space
$(this.currentItem).css('visibility', 'hidden');
return false;
},
stop: function(e) {
this.propagate("stop", e); //Call plugins and trigger callbacks
if(this.positionDOM != this.currentItem.prev()[0]) this.propagate("update", e);
if(this.cancelHelperRemoval) return false;
$(this.currentItem).css('visibility', '');
if(this.placeholder) this.placeholder.remove();
this.helper.remove();
return false;
},
drag: function(e) {
//Compute the helpers position
this.direction = (this.floating && this.positionAbs.left > e.pageX - this.clickOffset.left) || (this.positionAbs.top > e.pageY - this.clickOffset.top) ? 'down' : 'up';
this.position = { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left };
this.positionAbs = { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top };
//Rearrange
for (var i = this.items.length - 1; i >= 0; i--) {
if(this.intersectsWith(this.items[i]) && this.items[i].item[0] != this.currentItem[0] && (this.options.tree ? !this.currentItem[0].contains(this.items[i].item[0]) : true)) {
//Rearrange the DOM
this.items[i].item[this.direction == 'down' ? 'before' : 'after'](this.currentItem);
this.refreshPositions(true); //Precompute after each DOM insertion, NOT on mousemove
if(this.placeholderElement) this.placeholder.css(this.placeholderElement.offset());
this.propagate("change", e); //Call plugins and callbacks
break;
}
}
this.propagate("sort", e); //Call plugins and callbacks
this.helper.css({ left: this.position.left+'px', top: this.position.top+'px' }); // Stick the helper to the cursor
return false;
}
});
})(jQuery);
|
