2 * jQuery UI Sortable 1.8.2
4 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
5 * Dual licensed under the MIT (MIT-LICENSE.txt)
6 * and GPL (GPL-LICENSE.txt) licenses.
8 * http://docs.jquery.com/UI/Sortables
17 $.widget("ui.sortable", $.ui.mouse, {
18 widgetEventPrefix: "sort",
27 forcePlaceholderSize: false,
28 forceHelperSize: false,
37 scrollSensitivity: 20,
40 tolerance: "intersect",
46 this.containerCache = {};
47 this.element.addClass("ui-sortable");
52 //Let's determine if the items are floating
53 this.floating = this.items.length ? (/left|right/).test(this.items[0].item.css('float')) : false;
55 //Let's determine the parent's offset
56 this.offset = this.element.offset();
58 //Initialize mouse events for interaction
65 .removeClass("ui-sortable ui-sortable-disabled")
66 .removeData("sortable")
70 for ( var i = this.items.length - 1; i >= 0; i-- )
71 this.items[i].item.removeData("sortable-item");
76 _setOption: function(key, value){
77 if ( key === "disabled" ) {
78 this.options[ key ] = value;
81 [ value ? "addClass" : "removeClass"]( "ui-sortable-disabled" );
83 // Don't call widget base _setOption for disable as it adds ui-state-disabled class
84 $.Widget.prototype._setOption.apply(this, arguments);
88 _mouseCapture: function(event, overrideHandle) {
94 if(this.options.disabled || this.options.type == 'static') return false;
96 //We have to refresh the items data once first
97 this._refreshItems(event);
99 //Find out if the clicked node (or one of its parents) is a actual item in this.items
100 var currentItem = null, self = this, nodes = $(event.target).parents().each(function() {
101 if($.data(this, 'sortable-item') == self) {
102 currentItem = $(this);
106 if($.data(event.target, 'sortable-item') == self) currentItem = $(event.target);
108 if(!currentItem) return false;
109 if(this.options.handle && !overrideHandle) {
110 var validHandle = false;
112 $(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == event.target) validHandle = true; });
113 if(!validHandle) return false;
116 this.currentItem = currentItem;
117 this._removeCurrentsFromItems();
122 _mouseStart: function(event, overrideHandle, noActivation) {
124 var o = this.options, self = this;
125 this.currentContainer = this;
127 //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
128 this.refreshPositions();
130 //Create and append the visible helper
131 this.helper = this._createHelper(event);
133 //Cache the helper size
134 this._cacheHelperProportions();
137 * - Position generation -
138 * This block generates everything position related - it's the core of draggables.
141 //Cache the margins of the original element
142 this._cacheMargins();
144 //Get the next scrolling parent
145 this.scrollParent = this.helper.scrollParent();
147 //The element's absolute position on the page minus margins
148 this.offset = this.currentItem.offset();
150 top: this.offset.top - this.margins.top,
151 left: this.offset.left - this.margins.left
154 // Only after we got the offset, we can change the helper's position to absolute
155 // TODO: Still need to figure out a way to make relative sorting possible
156 this.helper.css("position", "absolute");
157 this.cssPosition = this.helper.css("position");
159 $.extend(this.offset, {
160 click: { //Where the click happened, relative to the element
161 left: event.pageX - this.offset.left,
162 top: event.pageY - this.offset.top
164 parent: this._getParentOffset(),
165 relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
168 //Generate the original position
169 this.originalPosition = this._generatePosition(event);
170 this.originalPageX = event.pageX;
171 this.originalPageY = event.pageY;
173 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
174 (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
176 //Cache the former DOM position
177 this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
179 //If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way
180 if(this.helper[0] != this.currentItem[0]) {
181 this.currentItem.hide();
184 //Create the placeholder
185 this._createPlaceholder();
187 //Set a containment if given in the options
189 this._setContainment();
191 if(o.cursor) { // cursor option
192 if ($('body').css("cursor")) this._storedCursor = $('body').css("cursor");
193 $('body').css("cursor", o.cursor);
196 if(o.opacity) { // opacity option
197 if (this.helper.css("opacity")) this._storedOpacity = this.helper.css("opacity");
198 this.helper.css("opacity", o.opacity);
201 if(o.zIndex) { // zIndex option
202 if (this.helper.css("zIndex")) this._storedZIndex = this.helper.css("zIndex");
203 this.helper.css("zIndex", o.zIndex);
207 if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML')
208 this.overflowOffset = this.scrollParent.offset();
211 this._trigger("start", event, this._uiHash());
213 //Recache the helper size
214 if(!this._preserveHelperProportions)
215 this._cacheHelperProportions();
218 //Post 'activate' events to possible containers
220 for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._trigger("activate", event, self._uiHash(this)); }
223 //Prepare possible droppables
225 $.ui.ddmanager.current = this;
227 if ($.ui.ddmanager && !o.dropBehaviour)
228 $.ui.ddmanager.prepareOffsets(this, event);
230 this.dragging = true;
232 this.helper.addClass("ui-sortable-helper");
233 this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
238 _mouseDrag: function(event) {
240 //Compute the helpers position
241 this.position = this._generatePosition(event);
242 this.positionAbs = this._convertPositionTo("absolute");
244 if (!this.lastPositionAbs) {
245 this.lastPositionAbs = this.positionAbs;
249 if(this.options.scroll) {
250 var o = this.options, scrolled = false;
251 if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') {
253 if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
254 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
255 else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity)
256 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
258 if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
259 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
260 else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity)
261 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
265 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
266 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
267 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
268 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
270 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
271 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
272 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
273 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
277 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
278 $.ui.ddmanager.prepareOffsets(this, event);
281 //Regenerate the absolute position used for position checks
282 this.positionAbs = this._convertPositionTo("absolute");
284 //Set the helper position
285 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
286 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
289 for (var i = this.items.length - 1; i >= 0; i--) {
291 //Cache variables and intersection, continue if no intersection
292 var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item);
293 if (!intersection) continue;
295 if(itemElement != this.currentItem[0] //cannot intersect with itself
296 && this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before
297 && !$.ui.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked
298 && (this.options.type == 'semi-dynamic' ? !$.ui.contains(this.element[0], itemElement) : true)
299 //&& itemElement.parentNode == this.placeholder[0].parentNode // only rearrange items within the same container
302 this.direction = intersection == 1 ? "down" : "up";
304 if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) {
305 this._rearrange(event, item);
310 this._trigger("change", event, this._uiHash());
315 //Post events to containers
316 this._contactContainers(event);
318 //Interconnect with droppables
319 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
322 this._trigger('sort', event, this._uiHash());
324 this.lastPositionAbs = this.positionAbs;
329 _mouseStop: function(event, noPropagation) {
333 //If we are using droppables, inform the manager about the drop
334 if ($.ui.ddmanager && !this.options.dropBehaviour)
335 $.ui.ddmanager.drop(this, event);
337 if(this.options.revert) {
339 var cur = self.placeholder.offset();
341 self.reverting = true;
343 $(this.helper).animate({
344 left: cur.left - this.offset.parent.left - self.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft),
345 top: cur.top - this.offset.parent.top - self.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)
346 }, parseInt(this.options.revert, 10) || 500, function() {
350 this._clear(event, noPropagation);
365 if(this.options.helper == "original")
366 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
368 this.currentItem.show();
370 //Post deactivating events to containers
371 for (var i = this.containers.length - 1; i >= 0; i--){
372 this.containers[i]._trigger("deactivate", null, self._uiHash(this));
373 if(this.containers[i].containerCache.over) {
374 this.containers[i]._trigger("out", null, self._uiHash(this));
375 this.containers[i].containerCache.over = 0;
381 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
382 if(this.placeholder[0].parentNode) this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
383 if(this.options.helper != "original" && this.helper && this.helper[0].parentNode) this.helper.remove();
392 if(this.domPosition.prev) {
393 $(this.domPosition.prev).after(this.currentItem);
395 $(this.domPosition.parent).prepend(this.currentItem);
402 serialize: function(o) {
404 var items = this._getItemsAsjQuery(o && o.connected);
405 var str = []; o = o || {};
407 $(items).each(function() {
408 var res = ($(o.item || this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
409 if(res) str.push((o.key || res[1]+'[]')+'='+(o.key && o.expression ? res[1] : res[2]));
412 return str.join('&');
416 toArray: function(o) {
418 var items = this._getItemsAsjQuery(o && o.connected);
419 var ret = []; o = o || {};
421 items.each(function() { ret.push($(o.item || this).attr(o.attribute || 'id') || ''); });
426 /* Be careful with the following core functions */
427 _intersectsWith: function(item) {
429 var x1 = this.positionAbs.left,
430 x2 = x1 + this.helperProportions.width,
431 y1 = this.positionAbs.top,
432 y2 = y1 + this.helperProportions.height;
439 var dyClick = this.offset.click.top,
440 dxClick = this.offset.click.left;
442 var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;
444 if( this.options.tolerance == "pointer"
445 || this.options.forcePointerForContainers
446 || (this.options.tolerance != "pointer" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])
448 return isOverElement;
451 return (l < x1 + (this.helperProportions.width / 2) // Right Half
452 && x2 - (this.helperProportions.width / 2) < r // Left Half
453 && t < y1 + (this.helperProportions.height / 2) // Bottom Half
454 && y2 - (this.helperProportions.height / 2) < b ); // Top Half
459 _intersectsWithPointer: function(item) {
461 var isOverElementHeight = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
462 isOverElementWidth = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
463 isOverElement = isOverElementHeight && isOverElementWidth,
464 verticalDirection = this._getDragVerticalDirection(),
465 horizontalDirection = this._getDragHorizontalDirection();
470 return this.floating ?
471 ( ((horizontalDirection && horizontalDirection == "right") || verticalDirection == "down") ? 2 : 1 )
472 : ( verticalDirection && (verticalDirection == "down" ? 2 : 1) );
476 _intersectsWithSides: function(item) {
478 var isOverBottomHalf = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
479 isOverRightHalf = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
480 verticalDirection = this._getDragVerticalDirection(),
481 horizontalDirection = this._getDragHorizontalDirection();
483 if (this.floating && horizontalDirection) {
484 return ((horizontalDirection == "right" && isOverRightHalf) || (horizontalDirection == "left" && !isOverRightHalf));
486 return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) || (verticalDirection == "up" && !isOverBottomHalf));
491 _getDragVerticalDirection: function() {
492 var delta = this.positionAbs.top - this.lastPositionAbs.top;
493 return delta != 0 && (delta > 0 ? "down" : "up");
496 _getDragHorizontalDirection: function() {
497 var delta = this.positionAbs.left - this.lastPositionAbs.left;
498 return delta != 0 && (delta > 0 ? "right" : "left");
501 refresh: function(event) {
502 this._refreshItems(event);
503 this.refreshPositions();
507 _connectWith: function() {
508 var options = this.options;
509 return options.connectWith.constructor == String
510 ? [options.connectWith]
511 : options.connectWith;
514 _getItemsAsjQuery: function(connected) {
519 var connectWith = this._connectWith();
521 if(connectWith && connected) {
522 for (var i = connectWith.length - 1; i >= 0; i--){
523 var cur = $(connectWith[i]);
524 for (var j = cur.length - 1; j >= 0; j--){
525 var inst = $.data(cur[j], 'sortable');
526 if(inst && inst != this && !inst.options.disabled) {
527 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), inst]);
533 queries.push([$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), this]);
535 for (var i = queries.length - 1; i >= 0; i--){
536 queries[i][0].each(function() {
545 _removeCurrentsFromItems: function() {
547 var list = this.currentItem.find(":data(sortable-item)");
549 for (var i=0; i < this.items.length; i++) {
551 for (var j=0; j < list.length; j++) {
552 if(list[j] == this.items[i].item[0])
553 this.items.splice(i,1);
560 _refreshItems: function(event) {
563 this.containers = [this];
564 var items = this.items;
566 var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]];
567 var connectWith = this._connectWith();
570 for (var i = connectWith.length - 1; i >= 0; i--){
571 var cur = $(connectWith[i]);
572 for (var j = cur.length - 1; j >= 0; j--){
573 var inst = $.data(cur[j], 'sortable');
574 if(inst && inst != this && !inst.options.disabled) {
575 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
576 this.containers.push(inst);
582 for (var i = queries.length - 1; i >= 0; i--) {
583 var targetData = queries[i][1];
584 var _queries = queries[i][0];
586 for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) {
587 var item = $(_queries[j]);
589 item.data('sortable-item', targetData); // Data for target checking (mouse manager)
593 instance: targetData,
602 refreshPositions: function(fast) {
604 //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
605 if(this.offsetParent && this.helper) {
606 this.offset.parent = this._getParentOffset();
609 for (var i = this.items.length - 1; i >= 0; i--){
610 var item = this.items[i];
612 var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
615 item.width = t.outerWidth();
616 item.height = t.outerHeight();
624 if(this.options.custom && this.options.custom.refreshContainers) {
625 this.options.custom.refreshContainers.call(this);
627 for (var i = this.containers.length - 1; i >= 0; i--){
628 var p = this.containers[i].element.offset();
629 this.containers[i].containerCache.left = p.left;
630 this.containers[i].containerCache.top = p.top;
631 this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
632 this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
639 _createPlaceholder: function(that) {
641 var self = that || this, o = self.options;
643 if(!o.placeholder || o.placeholder.constructor == String) {
644 var className = o.placeholder;
646 element: function() {
648 var el = $(document.createElement(self.currentItem[0].nodeName))
649 .addClass(className || self.currentItem[0].className+" ui-sortable-placeholder")
650 .removeClass("ui-sortable-helper")[0];
653 el.style.visibility = "hidden";
657 update: function(container, p) {
659 // 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
660 // 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
661 if(className && !o.forcePlaceholderSize) return;
663 //If the element doesn't have a actual height by itself (without styles coming from a stylesheet), it receives the inline height from the dragged item
664 if(!p.height()) { p.height(self.currentItem.innerHeight() - parseInt(self.currentItem.css('paddingTop')||0, 10) - parseInt(self.currentItem.css('paddingBottom')||0, 10)); };
665 if(!p.width()) { p.width(self.currentItem.innerWidth() - parseInt(self.currentItem.css('paddingLeft')||0, 10) - parseInt(self.currentItem.css('paddingRight')||0, 10)); };
670 //Create the placeholder
671 self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem));
673 //Append it after the actual current item
674 self.currentItem.after(self.placeholder);
676 //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
677 o.placeholder.update(self, self.placeholder);
681 _contactContainers: function(event) {
683 // get innermost container that intersects with item
684 var innermostContainer = null, innermostIndex = null;
687 for (var i = this.containers.length - 1; i >= 0; i--){
689 // never consider a container that's located within the item itself
690 if($.ui.contains(this.currentItem[0], this.containers[i].element[0]))
693 if(this._intersectsWith(this.containers[i].containerCache)) {
695 // if we've already found a container and it's more "inner" than this, then continue
696 if(innermostContainer && $.ui.contains(this.containers[i].element[0], innermostContainer.element[0]))
699 innermostContainer = this.containers[i];
703 // container doesn't intersect. trigger "out" event if necessary
704 if(this.containers[i].containerCache.over) {
705 this.containers[i]._trigger("out", event, this._uiHash(this));
706 this.containers[i].containerCache.over = 0;
712 // if no intersecting containers found, return
713 if(!innermostContainer) return;
715 // move the item into the container if it's not there already
716 if(this.containers.length === 1) {
717 this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
718 this.containers[innermostIndex].containerCache.over = 1;
719 } else if(this.currentContainer != this.containers[innermostIndex]) {
721 //When entering a new container, we will find the item with the least distance and append our item near it
722 var dist = 10000; var itemWithLeastDistance = null; var base = this.positionAbs[this.containers[innermostIndex].floating ? 'left' : 'top'];
723 for (var j = this.items.length - 1; j >= 0; j--) {
724 if(!$.ui.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) continue;
725 var cur = this.items[j][this.containers[innermostIndex].floating ? 'left' : 'top'];
726 if(Math.abs(cur - base) < dist) {
727 dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
731 if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled
734 this.currentContainer = this.containers[innermostIndex];
735 itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
736 this._trigger("change", event, this._uiHash());
737 this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
739 //Update the placeholder
740 this.options.placeholder.update(this.currentContainer, this.placeholder);
742 this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
743 this.containers[innermostIndex].containerCache.over = 1;
749 _createHelper: function(event) {
751 var o = this.options;
752 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper == 'clone' ? this.currentItem.clone() : this.currentItem);
754 if(!helper.parents('body').length) //Add the helper to the DOM if that didn't happen already
755 $(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
757 if(helper[0] == this.currentItem[0])
758 this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
760 if(helper[0].style.width == '' || o.forceHelperSize) helper.width(this.currentItem.width());
761 if(helper[0].style.height == '' || o.forceHelperSize) helper.height(this.currentItem.height());
767 _adjustOffsetFromHelper: function(obj) {
768 if (typeof obj == 'string') {
769 obj = obj.split(' ');
771 if ($.isArray(obj)) {
772 obj = {left: +obj[0], top: +obj[1] || 0};
775 this.offset.click.left = obj.left + this.margins.left;
777 if ('right' in obj) {
778 this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
781 this.offset.click.top = obj.top + this.margins.top;
783 if ('bottom' in obj) {
784 this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
788 _getParentOffset: function() {
791 //Get the offsetParent and cache its position
792 this.offsetParent = this.helper.offsetParent();
793 var po = this.offsetParent.offset();
795 // This is a special case where we need to modify a offset calculated on start, since the following happened:
796 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
797 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
798 // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
799 if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) {
800 po.left += this.scrollParent.scrollLeft();
801 po.top += this.scrollParent.scrollTop();
804 if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
805 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
806 po = { top: 0, left: 0 };
809 top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
810 left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
815 _getRelativeOffset: function() {
817 if(this.cssPosition == "relative") {
818 var p = this.currentItem.position();
820 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
821 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
824 return { top: 0, left: 0 };
829 _cacheMargins: function() {
831 left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
832 top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
836 _cacheHelperProportions: function() {
837 this.helperProportions = {
838 width: this.helper.outerWidth(),
839 height: this.helper.outerHeight()
843 _setContainment: function() {
845 var o = this.options;
846 if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
847 if(o.containment == 'document' || o.containment == 'window') this.containment = [
848 0 - this.offset.relative.left - this.offset.parent.left,
849 0 - this.offset.relative.top - this.offset.parent.top,
850 $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
851 ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
854 if(!(/^(document|window|parent)$/).test(o.containment)) {
855 var ce = $(o.containment)[0];
856 var co = $(o.containment).offset();
857 var over = ($(ce).css("overflow") != 'hidden');
860 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
861 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
862 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,
863 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
869 _convertPositionTo: function(d, pos) {
871 if(!pos) pos = this.position;
872 var mod = d == "absolute" ? 1 : -1;
873 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
877 pos.top // The absolute mouse position
878 + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent
879 + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border)
880 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
883 pos.left // The absolute mouse position
884 + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent
885 + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border)
886 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
892 _generatePosition: function(event) {
894 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);
896 // This is another very weird special case that only happens for relative elements:
897 // 1. If the css position is relative
898 // 2. and the scroll parent is the document or similar to the offset parent
899 // we have to refresh the relative offset during the scroll so there are no jumps
900 if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) {
901 this.offset.relative = this._getRelativeOffset();
904 var pageX = event.pageX;
905 var pageY = event.pageY;
908 * - Position constraining -
909 * Constrain the position to a mix of grid, containment.
912 if(this.originalPosition) { //If we are not dragging yet, we won't check for options
914 if(this.containment) {
915 if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
916 if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
917 if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
918 if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
922 var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
923 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;
925 var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
926 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;
933 pageY // The absolute mouse position
934 - this.offset.click.top // Click offset (relative to the element)
935 - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent
936 - this.offset.parent.top // The offsetParent's offset without borders (offset + border)
937 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
940 pageX // The absolute mouse position
941 - this.offset.click.left // Click offset (relative to the element)
942 - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent
943 - this.offset.parent.left // The offsetParent's offset without borders (offset + border)
944 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
950 _rearrange: function(event, i, a, hardRefresh) {
952 a ? a[0].appendChild(this.placeholder[0]) : i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction == 'down' ? i.item[0] : i.item[0].nextSibling));
954 //Various things done here to improve the performance:
955 // 1. we create a setTimeout, that calls refreshPositions
956 // 2. on the instance, we have a counter variable, that get's higher after every append
957 // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
958 // 4. this lets only the last addition to the timeout stack through
959 this.counter = this.counter ? ++this.counter : 1;
960 var self = this, counter = this.counter;
962 window.setTimeout(function() {
963 if(counter == self.counter) self.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
968 _clear: function(event, noPropagation) {
970 this.reverting = false;
971 // We delay all events that have to be triggered to after the point where the placeholder has been removed and
972 // everything else normalized again
973 var delayedTriggers = [], self = this;
975 // We first have to update the dom position of the actual currentItem
976 // Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
977 if(!this._noFinalSort && this.currentItem[0].parentNode) this.placeholder.before(this.currentItem);
978 this._noFinalSort = null;
980 if(this.helper[0] == this.currentItem[0]) {
981 for(var i in this._storedCSS) {
982 if(this._storedCSS[i] == 'auto' || this._storedCSS[i] == 'static') this._storedCSS[i] = '';
984 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
986 this.currentItem.show();
989 if(this.fromOutside && !noPropagation) delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
990 if((this.fromOutside || this.domPosition.prev != this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent != this.currentItem.parent()[0]) && !noPropagation) delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed
991 if(!$.ui.contains(this.element[0], this.currentItem[0])) { //Node was moved out of the current element
992 if(!noPropagation) delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
993 for (var i = this.containers.length - 1; i >= 0; i--){
994 if($.ui.contains(this.containers[i].element[0], this.currentItem[0]) && !noPropagation) {
995 delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
996 delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
1001 //Post events to containers
1002 for (var i = this.containers.length - 1; i >= 0; i--){
1003 if(!noPropagation) delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
1004 if(this.containers[i].containerCache.over) {
1005 delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
1006 this.containers[i].containerCache.over = 0;
1010 //Do what was originally in plugins
1011 if(this._storedCursor) $('body').css("cursor", this._storedCursor); //Reset cursor
1012 if(this._storedOpacity) this.helper.css("opacity", this._storedOpacity); //Reset opacity
1013 if(this._storedZIndex) this.helper.css("zIndex", this._storedZIndex == 'auto' ? '' : this._storedZIndex); //Reset z-index
1015 this.dragging = false;
1016 if(this.cancelHelperRemoval) {
1017 if(!noPropagation) {
1018 this._trigger("beforeStop", event, this._uiHash());
1019 for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
1020 this._trigger("stop", event, this._uiHash());
1025 if(!noPropagation) this._trigger("beforeStop", event, this._uiHash());
1027 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
1028 this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
1030 if(this.helper[0] != this.currentItem[0]) this.helper.remove(); this.helper = null;
1032 if(!noPropagation) {
1033 for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
1034 this._trigger("stop", event, this._uiHash());
1037 this.fromOutside = false;
1042 _trigger: function() {
1043 if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
1048 _uiHash: function(inst) {
1049 var self = inst || this;
1051 helper: self.helper,
1052 placeholder: self.placeholder || $([]),
1053 position: self.position,
1054 originalPosition: self.originalPosition,
1055 offset: self.positionAbs,
1056 item: self.currentItem,
1057 sender: inst ? inst.element : null
1063 $.extend($.ui.sortable, {