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1/*
2 * jQuery UI Draggable 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/Draggables
9 *
10 * Depends:
11 * ui.core.js
12 */
13(function($) {
14
15$.widget("ui.draggable", $.extend({}, $.ui.mouse, {
16
17 _init: function() {
18
19 if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position")))
20 this.element[0].style.position = 'relative';
21
22 (this.options.addClasses && this.element.addClass("ui-draggable"));
23 (this.options.disabled && this.element.addClass("ui-draggable-disabled"));
24
25 this._mouseInit();
26
27 },
28
29 destroy: function() {
30 if(!this.element.data('draggable')) return;
31 this.element
32 .removeData("draggable")
33 .unbind(".draggable")
34 .removeClass("ui-draggable"
35 + " ui-draggable-dragging"
36 + " ui-draggable-disabled");
37 this._mouseDestroy();
38 },
39
40 _mouseCapture: function(event) {
41
42 var o = this.options;
43
44 if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle'))
45 return false;
46
47 //Quit if we're not on a valid handle
48 this.handle = this._getHandle(event);
49 if (!this.handle)
50 return false;
51
52 return true;
53
54 },
55
56 _mouseStart: function(event) {
57
58 var o = this.options;
59
60 //Create and append the visible helper
61 this.helper = this._createHelper(event);
62
63 //Cache the helper size
64 this._cacheHelperProportions();
65
66 //If ddmanager is used for droppables, set the global draggable
67 if($.ui.ddmanager)
68 $.ui.ddmanager.current = this;
69
70 /*
71 * - Position generation -
72 * This block generates everything position related - it's the core of draggables.
73 */
74
75 //Cache the margins of the original element
76 this._cacheMargins();
77
78 //Store the helper's css position
79 this.cssPosition = this.helper.css("position");
80 this.scrollParent = this.helper.scrollParent();
81
82 //The element's absolute position on the page minus margins
83 this.offset = this.element.offset();
84 this.offset = {
85 top: this.offset.top - this.margins.top,
86 left: this.offset.left - this.margins.left
87 };
88
89 $.extend(this.offset, {
90 click: { //Where the click happened, relative to the element
91 left: event.pageX - this.offset.left,
92 top: event.pageY - this.offset.top
93 },
94 parent: this._getParentOffset(),
95 relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
96 });
97
98 //Generate the original position
99 this.originalPosition = this._generatePosition(event);
100 this.originalPageX = event.pageX;
101 this.originalPageY = event.pageY;
102
103 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
104 if(o.cursorAt)
105 this._adjustOffsetFromHelper(o.cursorAt);
106
107 //Set a containment if given in the options
108 if(o.containment)
109 this._setContainment();
110
111 //Call plugins and callbacks
112 this._trigger("start", event);
113
114 //Recache the helper size
115 this._cacheHelperProportions();
116
117 //Prepare the droppable offsets
118 if ($.ui.ddmanager && !o.dropBehaviour)
119 $.ui.ddmanager.prepareOffsets(this, event);
120
121 this.helper.addClass("ui-draggable-dragging");
122 this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
123 return true;
124 },
125
126 _mouseDrag: function(event, noPropagation) {
127
128 //Compute the helpers position
129 this.position = this._generatePosition(event);
130 this.positionAbs = this._convertPositionTo("absolute");
131
132 //Call plugins and callbacks and use the resulting position if something is returned
133 if (!noPropagation) {
134 var ui = this._uiHash();
135 this._trigger('drag', event, ui);
136 this.position = ui.position;
137 }
138
139 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
140 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
141 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
142
143 return false;
144 },
145
146 _mouseStop: function(event) {
147
148 //If we are using droppables, inform the manager about the drop
149 var dropped = false;
150 if ($.ui.ddmanager && !this.options.dropBehaviour)
151 dropped = $.ui.ddmanager.drop(this, event);
152
153 //if a drop comes from outside (a sortable)
154 if(this.dropped) {
155 dropped = this.dropped;
156 this.dropped = false;
157 }
158
159 if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
160 var self = this;
161 $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
162 self._trigger("stop", event);
163 self._clear();
164 });
165 } else {
166 this._trigger("stop", event);
167 this._clear();
168 }
169
170 return false;
171 },
172
173 _getHandle: function(event) {
174
175 var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
176 $(this.options.handle, this.element)
177 .find("*")
178 .andSelf()
179 .each(function() {
180 if(this == event.target) handle = true;
181 });
182
183 return handle;
184
185 },
186
187 _createHelper: function(event) {
188
189 var o = this.options;
190 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element);
191
192 if(!helper.parents('body').length)
193 helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));
194
195 if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position")))
196 helper.css("position", "absolute");
197
198 return helper;
199
200 },
201
202 _adjustOffsetFromHelper: function(obj) {
203 if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left;
204 if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
205 if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top;
206 if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
207 },
208
209 _getParentOffset: function() {
210
211 //Get the offsetParent and cache its position
212 this.offsetParent = this.helper.offsetParent();
213 var po = this.offsetParent.offset();
214
215 // This is a special case where we need to modify a offset calculated on start, since the following happened:
216 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
217 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
218 // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
219 if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) {
220 po.left += this.scrollParent.scrollLeft();
221 po.top += this.scrollParent.scrollTop();
222 }
223
224 if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
225 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
226 po = { top: 0, left: 0 };
227
228 return {
229 top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
230 left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
231 };
232
233 },
234
235 _getRelativeOffset: function() {
236
237 if(this.cssPosition == "relative") {
238 var p = this.element.position();
239 return {
240 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
241 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
242 };
243 } else {
244 return { top: 0, left: 0 };
245 }
246
247 },
248
249 _cacheMargins: function() {
250 this.margins = {
251 left: (parseInt(this.element.css("marginLeft"),10) || 0),
252 top: (parseInt(this.element.css("marginTop"),10) || 0)
253 };
254 },
255
256 _cacheHelperProportions: function() {
257 this.helperProportions = {
258 width: this.helper.outerWidth(),
259 height: this.helper.outerHeight()
260 };
261 },
262
263 _setContainment: function() {
264
265 var o = this.options;
266 if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
267 if(o.containment == 'document' || o.containment == 'window') this.containment = [
268 0 - this.offset.relative.left - this.offset.parent.left,
269 0 - this.offset.relative.top - this.offset.parent.top,
270 $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
271 ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
272 ];
273
274 if(!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor != Array) {
275 var ce = $(o.containment)[0]; if(!ce) return;
276 var co = $(o.containment).offset();
277 var over = ($(ce).css("overflow") != 'hidden');
278
279 this.containment = [
280 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
281 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
282 co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left,
283 co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top
284 ];
285 } else if(o.containment.constructor == Array) {
286 this.containment = o.containment;
287 }
288
289 },
290
291 _convertPositionTo: function(d, pos) {
292
293 if(!pos) pos = this.position;
294 var mod = d == "absolute" ? 1 : -1;
295 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
296
297 return {
298 top: (
299 pos.top // The absolute mouse position
300 + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent
301 + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border)
302 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
303 ),
304 left: (
305 pos.left // The absolute mouse position
306 + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent
307 + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border)
308 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
309 )
310 };
311
312 },
313
314 _generatePosition: function(event) {
315
316 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
317
318 // This is another very weird special case that only happens for relative elements:
319 // 1. If the css position is relative
320 // 2. and the scroll parent is the document or similar to the offset parent
321 // we have to refresh the relative offset during the scroll so there are no jumps
322 if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) {
323 this.offset.relative = this._getRelativeOffset();
324 }
325
326 var pageX = event.pageX;
327 var pageY = event.pageY;
328
329 /*
330 * - Position constraining -
331 * Constrain the position to a mix of grid, containment.
332 */
333
334 if(this.originalPosition) { //If we are not dragging yet, we won't check for options
335
336 if(this.containment) {
337 if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
338 if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
339 if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
340 if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
341 }
342
343 if(o.grid) {
344 var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
345 pageY = this.containment ? (!(top - this.offset.click.top < this.containment[1] || top - this.offset.click.top > this.containment[3]) ? top : (!(top - this.offset.click.top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
346
347 var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
348 pageX = this.containment ? (!(left - this.offset.click.left < this.containment[0] || left - this.offset.click.left > this.containment[2]) ? left : (!(left - this.offset.click.left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
349 }
350
351 }
352
353 return {
354 top: (
355 pageY // The absolute mouse position
356 - this.offset.click.top // Click offset (relative to the element)
357 - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent
358 - this.offset.parent.top // The offsetParent's offset without borders (offset + border)
359 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
360 ),
361 left: (
362 pageX // The absolute mouse position
363 - this.offset.click.left // Click offset (relative to the element)
364 - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent
365 - this.offset.parent.left // The offsetParent's offset without borders (offset + border)
366 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
367 )
368 };
369
370 },
371
372 _clear: function() {
373 this.helper.removeClass("ui-draggable-dragging");
374 if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove();
375 //if($.ui.ddmanager) $.ui.ddmanager.current = null;
376 this.helper = null;
377 this.cancelHelperRemoval = false;
378 },
379
380 // From now on bulk stuff - mainly helpers
381
382 _trigger: function(type, event, ui) {
383 ui = ui || this._uiHash();
384 $.ui.plugin.call(this, type, [event, ui]);
385 if(type == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins
386 return $.widget.prototype._trigger.call(this, type, event, ui);
387 },
388
389 plugins: {},
390
391 _uiHash: function(event) {
392 return {
393 helper: this.helper,
394 position: this.position,
395 absolutePosition: this.positionAbs, //deprecated
396 offset: this.positionAbs
397 };
398 }
399
400}));
401
402$.extend($.ui.draggable, {
403 version: "1.7.2",
404 eventPrefix: "drag",
405 defaults: {
406 addClasses: true,
407 appendTo: "parent",
408 axis: false,
409 cancel: ":input,option",
410 connectToSortable: false,
411 containment: false,
412 cursor: "auto",
413 cursorAt: false,
414 delay: 0,
415 distance: 1,
416 grid: false,
417 handle: false,
418 helper: "original",
419 iframeFix: false,
420 opacity: false,
421 refreshPositions: false,
422 revert: false,
423 revertDuration: 500,
424 scope: "default",
425 scroll: true,
426 scrollSensitivity: 20,
427 scrollSpeed: 20,
428 snap: false,
429 snapMode: "both",
430 snapTolerance: 20,
431 stack: false,
432 zIndex: false
433 }
434});
435
436$.ui.plugin.add("draggable", "connectToSortable", {
437 start: function(event, ui) {
438
439 var inst = $(this).data("draggable"), o = inst.options,
440 uiSortable = $.extend({}, ui, { item: inst.element });
441 inst.sortables = [];
442 $(o.connectToSortable).each(function() {
443 var sortable = $.data(this, 'sortable');
444 if (sortable && !sortable.options.disabled) {
445 inst.sortables.push({
446 instance: sortable,
447 shouldRevert: sortable.options.revert
448 });
449 sortable._refreshItems(); //Do a one-time refresh at start to refresh the containerCache
450 sortable._trigger("activate", event, uiSortable);
451 }
452 });
453
454 },
455 stop: function(event, ui) {
456
457 //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
458 var inst = $(this).data("draggable"),
459 uiSortable = $.extend({}, ui, { item: inst.element });
460
461 $.each(inst.sortables, function() {
462 if(this.instance.isOver) {
463
464 this.instance.isOver = 0;
465
466 inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
467 this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
468
469 //The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: 'valid/invalid'
470 if(this.shouldRevert) this.instance.options.revert = true;
471
472 //Trigger the stop of the sortable
473 this.instance._mouseStop(event);
474
475 this.instance.options.helper = this.instance.options._helper;
476
477 //If the helper has been the original item, restore properties in the sortable
478 if(inst.options.helper == 'original')
479 this.instance.currentItem.css({ top: 'auto', left: 'auto' });
480
481 } else {
482 this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance
483 this.instance._trigger("deactivate", event, uiSortable);
484 }
485
486 });
487
488 },
489 drag: function(event, ui) {
490
491 var inst = $(this).data("draggable"), self = this;
492
493 var checkPos = function(o) {
494 var dyClick = this.offset.click.top, dxClick = this.offset.click.left;
495 var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left;
496 var itemHeight = o.height, itemWidth = o.width;
497 var itemTop = o.top, itemLeft = o.left;
498
499 return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth);
500 };
501
502 $.each(inst.sortables, function(i) {
503
504 //Copy over some variables to allow calling the sortable's native _intersectsWith
505 this.instance.positionAbs = inst.positionAbs;
506 this.instance.helperProportions = inst.helperProportions;
507 this.instance.offset.click = inst.offset.click;
508
509 if(this.instance._intersectsWith(this.instance.containerCache)) {
510
511 //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
512 if(!this.instance.isOver) {
513
514 this.instance.isOver = 1;
515 //Now we fake the start of dragging for the sortable instance,
516 //by cloning the list group item, appending it to the sortable and using it as inst.currentItem
517 //We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one)
518 this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);
519 this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
520 this.instance.options.helper = function() { return ui.helper[0]; };
521
522 event.target = this.instance.currentItem[0];
523 this.instance._mouseCapture(event, true);
524 this.instance._mouseStart(event, true, true);
525
526 //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
527 this.instance.offset.click.top = inst.offset.click.top;
528 this.instance.offset.click.left = inst.offset.click.left;
529 this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
530 this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;
531
532 inst._trigger("toSortable", event);
533 inst.dropped = this.instance.element; //draggable revert needs that
534 //hack so receive/update callbacks work (mostly)
535 inst.currentItem = inst.element;
536 this.instance.fromOutside = inst;
537
538 }
539
540 //Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable
541 if(this.instance.currentItem) this.instance._mouseDrag(event);
542
543 } else {
544
545 //If it doesn't intersect with the sortable, and it intersected before,
546 //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
547 if(this.instance.isOver) {
548
549 this.instance.isOver = 0;
550 this.instance.cancelHelperRemoval = true;
551
552 //Prevent reverting on this forced stop
553 this.instance.options.revert = false;
554
555 // The out event needs to be triggered independently
556 this.instance._trigger('out', event, this.instance._uiHash(this.instance));
557
558 this.instance._mouseStop(event, true);
559 this.instance.options.helper = this.instance.options._helper;
560
561 //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
562 this.instance.currentItem.remove();
563 if(this.instance.placeholder) this.instance.placeholder.remove();
564
565 inst._trigger("fromSortable", event);
566 inst.dropped = false; //draggable revert needs that
567 }
568
569 };
570
571 });
572
573 }
574});
575
576$.ui.plugin.add("draggable", "cursor", {
577 start: function(event, ui) {
578 var t = $('body'), o = $(this).data('draggable').options;
579 if (t.css("cursor")) o._cursor = t.css("cursor");
580 t.css("cursor", o.cursor);
581 },
582 stop: function(event, ui) {
583 var o = $(this).data('draggable').options;
584 if (o._cursor) $('body').css("cursor", o._cursor);
585 }
586});
587
588$.ui.plugin.add("draggable", "iframeFix", {
589 start: function(event, ui) {
590 var o = $(this).data('draggable').options;
591 $(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() {
592 $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
593 .css({
594 width: this.offsetWidth+"px", height: this.offsetHeight+"px",
595 position: "absolute", opacity: "0.001", zIndex: 1000
596 })
597 .css($(this).offset())
598 .appendTo("body");
599 });
600 },
601 stop: function(event, ui) {
602 $("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers
603 }
604});
605
606$.ui.plugin.add("draggable", "opacity", {
607 start: function(event, ui) {
608 var t = $(ui.helper), o = $(this).data('draggable').options;
609 if(t.css("opacity")) o._opacity = t.css("opacity");
610 t.css('opacity', o.opacity);
611 },
612 stop: function(event, ui) {
613 var o = $(this).data('draggable').options;
614 if(o._opacity) $(ui.helper).css('opacity', o._opacity);
615 }
616});
617
618$.ui.plugin.add("draggable", "scroll", {
619 start: function(event, ui) {
620 var i = $(this).data("draggable");
621 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset();
622 },
623 drag: function(event, ui) {
624
625 var i = $(this).data("draggable"), o = i.options, scrolled = false;
626
627 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') {
628
629 if(!o.axis || o.axis != 'x') {
630 if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
631 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
632 else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity)
633 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
634 }
635
636 if(!o.axis || o.axis != 'y') {
637 if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
638 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
639 else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity)
640 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
641 }
642
643 } else {
644
645 if(!o.axis || o.axis != 'x') {
646 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
647 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
648 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
649 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
650 }
651
652 if(!o.axis || o.axis != 'y') {
653 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
654 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
655 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
656 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
657 }
658
659 }
660
661 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
662 $.ui.ddmanager.prepareOffsets(i, event);
663
664 }
665});
666
667$.ui.plugin.add("draggable", "snap", {
668 start: function(event, ui) {
669
670 var i = $(this).data("draggable"), o = i.options;
671 i.snapElements = [];
672
673 $(o.snap.constructor != String ? ( o.snap.items || ':data(draggable)' ) : o.snap).each(function() {
674 var $t = $(this); var $o = $t.offset();
675 if(this != i.element[0]) i.snapElements.push({
676 item: this,
677 width: $t.outerWidth(), height: $t.outerHeight(),
678 top: $o.top, left: $o.left
679 });
680 });
681
682 },
683 drag: function(event, ui) {
684
685 var inst = $(this).data("draggable"), o = inst.options;
686 var d = o.snapTolerance;
687
688 var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
689 y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;
690
691 for (var i = inst.snapElements.length - 1; i >= 0; i--){
692
693 var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width,
694 t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;
695
696 //Yes, I know, this is insane ;)
697 if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) {
698 if(inst.snapElements[i].snapping) (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
699 inst.snapElements[i].snapping = false;
700 continue;
701 }
702
703 if(o.snapMode != 'inner') {
704 var ts = Math.abs(t - y2) <= d;
705 var bs = Math.abs(b - y1) <= d;
706 var ls = Math.abs(l - x2) <= d;
707 var rs = Math.abs(r - x1) <= d;
708 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
709 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top;
710 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left;
711 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left;
712 }
713
714 var first = (ts || bs || ls || rs);
715
716 if(o.snapMode != 'outer') {
717 var ts = Math.abs(t - y1) <= d;
718 var bs = Math.abs(b - y2) <= d;
719 var ls = Math.abs(l - x1) <= d;
720 var rs = Math.abs(r - x2) <= d;
721 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top;
722 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
723 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left;
724 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left;
725 }
726
727 if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first))
728 (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
729 inst.snapElements[i].snapping = (ts || bs || ls || rs || first);
730
731 };
732
733 }
734});
735
736$.ui.plugin.add("draggable", "stack", {
737 start: function(event, ui) {
738
739 var o = $(this).data("draggable").options;
740
741 var group = $.makeArray($(o.stack.group)).sort(function(a,b) {
742 return (parseInt($(a).css("zIndex"),10) || o.stack.min) - (parseInt($(b).css("zIndex"),10) || o.stack.min);
743 });
744
745 $(group).each(function(i) {
746 this.style.zIndex = o.stack.min + i;
747 });
748
749 this[0].style.zIndex = o.stack.min + group.length;
750
751 }
752});
753
754$.ui.plugin.add("draggable", "zIndex", {
755 start: function(event, ui) {
756 var t = $(ui.helper), o = $(this).data("draggable").options;
757 if(t.css("zIndex")) o._zIndex = t.css("zIndex");
758 t.css('zIndex', o.zIndex);
759 },
760 stop: function(event, ui) {
761 var o = $(this).data("draggable").options;
762 if(o._zIndex) $(ui.helper).css('zIndex', o._zIndex);
763 }
764});
765
766})(jQuery);
© 2015 Mike Crute