2 * jQuery UI Sortable 1.10.4
5 * Copyright 2014 jQuery Foundation and other contributors
6 * Released under the MIT license.
7 * http://jquery.org/license
9 * http://api.jqueryui.com/sortable/
16 (function( $, undefined ) {
18 function isOverAxis( x, reference, size ) {
19 return ( x > reference ) && ( x < ( reference + size ) );
22 function isFloating(item) {
23 return (/left|right/).test(item.css("float")) || (/inline|table-cell/).test(item.css("display"));
26 $.widget("ui.sortable", $.ui.mouse, {
28 widgetEventPrefix: "sort",
38 forcePlaceholderSize: false,
39 forceHelperSize: false,
48 scrollSensitivity: 20,
51 tolerance: "intersect",
71 this.containerCache = {};
72 this.element.addClass("ui-sortable");
77 //Let's determine if the items are being displayed horizontally
78 this.floating = this.items.length ? o.axis === "x" || isFloating(this.items[0].item) : false;
80 //Let's determine the parent's offset
81 this.offset = this.element.offset();
83 //Initialize mouse events for interaction
91 _destroy: function() {
93 .removeClass("ui-sortable ui-sortable-disabled");
96 for ( var i = this.items.length - 1; i >= 0; i-- ) {
97 this.items[i].item.removeData(this.widgetName + "-item");
103 _setOption: function(key, value){
104 if ( key === "disabled" ) {
105 this.options[ key ] = value;
107 this.widget().toggleClass( "ui-sortable-disabled", !!value );
109 // Don't call widget base _setOption for disable as it adds ui-state-disabled class
110 $.Widget.prototype._setOption.apply(this, arguments);
114 _mouseCapture: function(event, overrideHandle) {
115 var currentItem = null,
119 if (this.reverting) {
123 if(this.options.disabled || this.options.type === "static") {
127 //We have to refresh the items data once first
128 this._refreshItems(event);
130 //Find out if the clicked node (or one of its parents) is a actual item in this.items
131 $(event.target).parents().each(function() {
132 if($.data(this, that.widgetName + "-item") === that) {
133 currentItem = $(this);
137 if($.data(event.target, that.widgetName + "-item") === that) {
138 currentItem = $(event.target);
144 if(this.options.handle && !overrideHandle) {
145 $(this.options.handle, currentItem).find("*").addBack().each(function() {
146 if(this === event.target) {
155 this.currentItem = currentItem;
156 this._removeCurrentsFromItems();
161 _mouseStart: function(event, overrideHandle, noActivation) {
166 this.currentContainer = this;
168 //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
169 this.refreshPositions();
171 //Create and append the visible helper
172 this.helper = this._createHelper(event);
174 //Cache the helper size
175 this._cacheHelperProportions();
178 * - Position generation -
179 * This block generates everything position related - it's the core of draggables.
182 //Cache the margins of the original element
183 this._cacheMargins();
185 //Get the next scrolling parent
186 this.scrollParent = this.helper.scrollParent();
188 //The element's absolute position on the page minus margins
189 this.offset = this.currentItem.offset();
191 top: this.offset.top - this.margins.top,
192 left: this.offset.left - this.margins.left
195 $.extend(this.offset, {
196 click: { //Where the click happened, relative to the element
197 left: event.pageX - this.offset.left,
198 top: event.pageY - this.offset.top
200 parent: this._getParentOffset(),
201 relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
204 // Only after we got the offset, we can change the helper's position to absolute
205 // TODO: Still need to figure out a way to make relative sorting possible
206 this.helper.css("position", "absolute");
207 this.cssPosition = this.helper.css("position");
209 //Generate the original position
210 this.originalPosition = this._generatePosition(event);
211 this.originalPageX = event.pageX;
212 this.originalPageY = event.pageY;
214 //Adjust the mouse offset relative to the helper if "cursorAt" is supplied
215 (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
217 //Cache the former DOM position
218 this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
220 //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
221 if(this.helper[0] !== this.currentItem[0]) {
222 this.currentItem.hide();
225 //Create the placeholder
226 this._createPlaceholder();
228 //Set a containment if given in the options
230 this._setContainment();
233 if( o.cursor && o.cursor !== "auto" ) { // cursor option
234 body = this.document.find( "body" );
237 this.storedCursor = body.css( "cursor" );
238 body.css( "cursor", o.cursor );
240 this.storedStylesheet = $( "<style>*{ cursor: "+o.cursor+" !important; }</style>" ).appendTo( body );
243 if(o.opacity) { // opacity option
244 if (this.helper.css("opacity")) {
245 this._storedOpacity = this.helper.css("opacity");
247 this.helper.css("opacity", o.opacity);
250 if(o.zIndex) { // zIndex option
251 if (this.helper.css("zIndex")) {
252 this._storedZIndex = this.helper.css("zIndex");
254 this.helper.css("zIndex", o.zIndex);
258 if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
259 this.overflowOffset = this.scrollParent.offset();
263 this._trigger("start", event, this._uiHash());
265 //Recache the helper size
266 if(!this._preserveHelperProportions) {
267 this._cacheHelperProportions();
271 //Post "activate" events to possible containers
272 if( !noActivation ) {
273 for ( i = this.containers.length - 1; i >= 0; i-- ) {
274 this.containers[ i ]._trigger( "activate", event, this._uiHash( this ) );
278 //Prepare possible droppables
280 $.ui.ddmanager.current = this;
283 if ($.ui.ddmanager && !o.dropBehaviour) {
284 $.ui.ddmanager.prepareOffsets(this, event);
287 this.dragging = true;
289 this.helper.addClass("ui-sortable-helper");
290 this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
295 _mouseDrag: function(event) {
296 var i, item, itemElement, intersection,
300 //Compute the helpers position
301 this.position = this._generatePosition(event);
302 this.positionAbs = this._convertPositionTo("absolute");
304 if (!this.lastPositionAbs) {
305 this.lastPositionAbs = this.positionAbs;
309 if(this.options.scroll) {
310 if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
312 if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
313 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
314 } else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity) {
315 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
318 if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
319 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
320 } else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity) {
321 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
326 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
327 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
328 } else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
329 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
332 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
333 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
334 } else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
335 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
340 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
341 $.ui.ddmanager.prepareOffsets(this, event);
345 //Regenerate the absolute position used for position checks
346 this.positionAbs = this._convertPositionTo("absolute");
348 //Set the helper position
349 if(!this.options.axis || this.options.axis !== "y") {
350 this.helper[0].style.left = this.position.left+"px";
352 if(!this.options.axis || this.options.axis !== "x") {
353 this.helper[0].style.top = this.position.top+"px";
357 for (i = this.items.length - 1; i >= 0; i--) {
359 //Cache variables and intersection, continue if no intersection
360 item = this.items[i];
361 itemElement = item.item[0];
362 intersection = this._intersectsWithPointer(item);
367 // Only put the placeholder inside the current Container, skip all
368 // items from other containers. This works because when moving
369 // an item from one container to another the
370 // currentContainer is switched before the placeholder is moved.
372 // Without this, moving items in "sub-sortables" can cause
373 // the placeholder to jitter beetween the outer and inner container.
374 if (item.instance !== this.currentContainer) {
378 // cannot intersect with itself
379 // no useless actions that have been done before
380 // no action if the item moved is the parent of the item checked
381 if (itemElement !== this.currentItem[0] &&
382 this.placeholder[intersection === 1 ? "next" : "prev"]()[0] !== itemElement &&
383 !$.contains(this.placeholder[0], itemElement) &&
384 (this.options.type === "semi-dynamic" ? !$.contains(this.element[0], itemElement) : true)
387 this.direction = intersection === 1 ? "down" : "up";
389 if (this.options.tolerance === "pointer" || this._intersectsWithSides(item)) {
390 this._rearrange(event, item);
395 this._trigger("change", event, this._uiHash());
400 //Post events to containers
401 this._contactContainers(event);
403 //Interconnect with droppables
405 $.ui.ddmanager.drag(this, event);
409 this._trigger("sort", event, this._uiHash());
411 this.lastPositionAbs = this.positionAbs;
416 _mouseStop: function(event, noPropagation) {
422 //If we are using droppables, inform the manager about the drop
423 if ($.ui.ddmanager && !this.options.dropBehaviour) {
424 $.ui.ddmanager.drop(this, event);
427 if(this.options.revert) {
429 cur = this.placeholder.offset(),
430 axis = this.options.axis,
433 if ( !axis || axis === "x" ) {
434 animation.left = cur.left - this.offset.parent.left - this.margins.left + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollLeft);
436 if ( !axis || axis === "y" ) {
437 animation.top = cur.top - this.offset.parent.top - this.margins.top + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollTop);
439 this.reverting = true;
440 $(this.helper).animate( animation, parseInt(this.options.revert, 10) || 500, function() {
444 this._clear(event, noPropagation);
455 this._mouseUp({ target: null });
457 if(this.options.helper === "original") {
458 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
460 this.currentItem.show();
463 //Post deactivating events to containers
464 for (var i = this.containers.length - 1; i >= 0; i--){
465 this.containers[i]._trigger("deactivate", null, this._uiHash(this));
466 if(this.containers[i].containerCache.over) {
467 this.containers[i]._trigger("out", null, this._uiHash(this));
468 this.containers[i].containerCache.over = 0;
474 if (this.placeholder) {
475 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
476 if(this.placeholder[0].parentNode) {
477 this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
479 if(this.options.helper !== "original" && this.helper && this.helper[0].parentNode) {
480 this.helper.remove();
490 if(this.domPosition.prev) {
491 $(this.domPosition.prev).after(this.currentItem);
493 $(this.domPosition.parent).prepend(this.currentItem);
501 serialize: function(o) {
503 var items = this._getItemsAsjQuery(o && o.connected),
507 $(items).each(function() {
508 var res = ($(o.item || this).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[\-=_](.+)/));
510 str.push((o.key || res[1]+"[]")+"="+(o.key && o.expression ? res[1] : res[2]));
514 if(!str.length && o.key) {
515 str.push(o.key + "=");
518 return str.join("&");
522 toArray: function(o) {
524 var items = this._getItemsAsjQuery(o && o.connected),
529 items.each(function() { ret.push($(o.item || this).attr(o.attribute || "id") || ""); });
534 /* Be careful with the following core functions */
535 _intersectsWith: function(item) {
537 var x1 = this.positionAbs.left,
538 x2 = x1 + this.helperProportions.width,
539 y1 = this.positionAbs.top,
540 y2 = y1 + this.helperProportions.height,
545 dyClick = this.offset.click.top,
546 dxClick = this.offset.click.left,
547 isOverElementHeight = ( this.options.axis === "x" ) || ( ( y1 + dyClick ) > t && ( y1 + dyClick ) < b ),
548 isOverElementWidth = ( this.options.axis === "y" ) || ( ( x1 + dxClick ) > l && ( x1 + dxClick ) < r ),
549 isOverElement = isOverElementHeight && isOverElementWidth;
551 if ( this.options.tolerance === "pointer" ||
552 this.options.forcePointerForContainers ||
553 (this.options.tolerance !== "pointer" && this.helperProportions[this.floating ? "width" : "height"] > item[this.floating ? "width" : "height"])
555 return isOverElement;
558 return (l < x1 + (this.helperProportions.width / 2) && // Right Half
559 x2 - (this.helperProportions.width / 2) < r && // Left Half
560 t < y1 + (this.helperProportions.height / 2) && // Bottom Half
561 y2 - (this.helperProportions.height / 2) < b ); // Top Half
566 _intersectsWithPointer: function(item) {
568 var isOverElementHeight = (this.options.axis === "x") || isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
569 isOverElementWidth = (this.options.axis === "y") || isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
570 isOverElement = isOverElementHeight && isOverElementWidth,
571 verticalDirection = this._getDragVerticalDirection(),
572 horizontalDirection = this._getDragHorizontalDirection();
574 if (!isOverElement) {
578 return this.floating ?
579 ( ((horizontalDirection && horizontalDirection === "right") || verticalDirection === "down") ? 2 : 1 )
580 : ( verticalDirection && (verticalDirection === "down" ? 2 : 1) );
584 _intersectsWithSides: function(item) {
586 var isOverBottomHalf = isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
587 isOverRightHalf = isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
588 verticalDirection = this._getDragVerticalDirection(),
589 horizontalDirection = this._getDragHorizontalDirection();
591 if (this.floating && horizontalDirection) {
592 return ((horizontalDirection === "right" && isOverRightHalf) || (horizontalDirection === "left" && !isOverRightHalf));
594 return verticalDirection && ((verticalDirection === "down" && isOverBottomHalf) || (verticalDirection === "up" && !isOverBottomHalf));
599 _getDragVerticalDirection: function() {
600 var delta = this.positionAbs.top - this.lastPositionAbs.top;
601 return delta !== 0 && (delta > 0 ? "down" : "up");
604 _getDragHorizontalDirection: function() {
605 var delta = this.positionAbs.left - this.lastPositionAbs.left;
606 return delta !== 0 && (delta > 0 ? "right" : "left");
609 refresh: function(event) {
610 this._refreshItems(event);
611 this.refreshPositions();
615 _connectWith: function() {
616 var options = this.options;
617 return options.connectWith.constructor === String ? [options.connectWith] : options.connectWith;
620 _getItemsAsjQuery: function(connected) {
625 connectWith = this._connectWith();
627 if(connectWith && connected) {
628 for (i = connectWith.length - 1; i >= 0; i--){
629 cur = $(connectWith[i]);
630 for ( j = cur.length - 1; j >= 0; j--){
631 inst = $.data(cur[j], this.widgetFullName);
632 if(inst && inst !== this && !inst.options.disabled) {
633 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not(".ui-sortable-placeholder"), inst]);
639 queries.push([$.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]);
641 function addItems() {
644 for (i = queries.length - 1; i >= 0; i--){
645 queries[i][0].each( addItems );
652 _removeCurrentsFromItems: function() {
654 var list = this.currentItem.find(":data(" + this.widgetName + "-item)");
656 this.items = $.grep(this.items, function (item) {
657 for (var j=0; j < list.length; j++) {
658 if(list[j] === item.item[0]) {
667 _refreshItems: function(event) {
670 this.containers = [this];
672 var i, j, cur, inst, targetData, _queries, item, queriesLength,
674 queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]],
675 connectWith = this._connectWith();
677 if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down
678 for (i = connectWith.length - 1; i >= 0; i--){
679 cur = $(connectWith[i]);
680 for (j = cur.length - 1; j >= 0; j--){
681 inst = $.data(cur[j], this.widgetFullName);
682 if(inst && inst !== this && !inst.options.disabled) {
683 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
684 this.containers.push(inst);
690 for (i = queries.length - 1; i >= 0; i--) {
691 targetData = queries[i][1];
692 _queries = queries[i][0];
694 for (j=0, queriesLength = _queries.length; j < queriesLength; j++) {
695 item = $(_queries[j]);
697 item.data(this.widgetName + "-item", targetData); // Data for target checking (mouse manager)
701 instance: targetData,
710 refreshPositions: function(fast) {
712 //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
713 if(this.offsetParent && this.helper) {
714 this.offset.parent = this._getParentOffset();
719 for (i = this.items.length - 1; i >= 0; i--){
720 item = this.items[i];
722 //We ignore calculating positions of all connected containers when we're not over them
723 if(item.instance !== this.currentContainer && this.currentContainer && item.item[0] !== this.currentItem[0]) {
727 t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
730 item.width = t.outerWidth();
731 item.height = t.outerHeight();
739 if(this.options.custom && this.options.custom.refreshContainers) {
740 this.options.custom.refreshContainers.call(this);
742 for (i = this.containers.length - 1; i >= 0; i--){
743 p = this.containers[i].element.offset();
744 this.containers[i].containerCache.left = p.left;
745 this.containers[i].containerCache.top = p.top;
746 this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
747 this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
754 _createPlaceholder: function(that) {
759 if(!o.placeholder || o.placeholder.constructor === String) {
760 className = o.placeholder;
762 element: function() {
764 var nodeName = that.currentItem[0].nodeName.toLowerCase(),
765 element = $( "<" + nodeName + ">", that.document[0] )
766 .addClass(className || that.currentItem[0].className+" ui-sortable-placeholder")
767 .removeClass("ui-sortable-helper");
769 if ( nodeName === "tr" ) {
770 that.currentItem.children().each(function() {
771 $( "<td> </td>", that.document[0] )
772 .attr( "colspan", $( this ).attr( "colspan" ) || 1 )
773 .appendTo( element );
775 } else if ( nodeName === "img" ) {
776 element.attr( "src", that.currentItem.attr( "src" ) );
780 element.css( "visibility", "hidden" );
785 update: function(container, p) {
787 // 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
788 // 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
789 if(className && !o.forcePlaceholderSize) {
793 //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
794 if(!p.height()) { p.height(that.currentItem.innerHeight() - parseInt(that.currentItem.css("paddingTop")||0, 10) - parseInt(that.currentItem.css("paddingBottom")||0, 10)); }
795 if(!p.width()) { p.width(that.currentItem.innerWidth() - parseInt(that.currentItem.css("paddingLeft")||0, 10) - parseInt(that.currentItem.css("paddingRight")||0, 10)); }
800 //Create the placeholder
801 that.placeholder = $(o.placeholder.element.call(that.element, that.currentItem));
803 //Append it after the actual current item
804 that.currentItem.after(that.placeholder);
806 //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
807 o.placeholder.update(that, that.placeholder);
811 _contactContainers: function(event) {
812 var i, j, dist, itemWithLeastDistance, posProperty, sizeProperty, base, cur, nearBottom, floating,
813 innermostContainer = null,
814 innermostIndex = null;
816 // get innermost container that intersects with item
817 for (i = this.containers.length - 1; i >= 0; i--) {
819 // never consider a container that's located within the item itself
820 if($.contains(this.currentItem[0], this.containers[i].element[0])) {
824 if(this._intersectsWith(this.containers[i].containerCache)) {
826 // if we've already found a container and it's more "inner" than this, then continue
827 if(innermostContainer && $.contains(this.containers[i].element[0], innermostContainer.element[0])) {
831 innermostContainer = this.containers[i];
835 // container doesn't intersect. trigger "out" event if necessary
836 if(this.containers[i].containerCache.over) {
837 this.containers[i]._trigger("out", event, this._uiHash(this));
838 this.containers[i].containerCache.over = 0;
844 // if no intersecting containers found, return
845 if(!innermostContainer) {
849 // move the item into the container if it's not there already
850 if(this.containers.length === 1) {
851 if (!this.containers[innermostIndex].containerCache.over) {
852 this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
853 this.containers[innermostIndex].containerCache.over = 1;
857 //When entering a new container, we will find the item with the least distance and append our item near it
859 itemWithLeastDistance = null;
860 floating = innermostContainer.floating || isFloating(this.currentItem);
861 posProperty = floating ? "left" : "top";
862 sizeProperty = floating ? "width" : "height";
863 base = this.positionAbs[posProperty] + this.offset.click[posProperty];
864 for (j = this.items.length - 1; j >= 0; j--) {
865 if(!$.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) {
868 if(this.items[j].item[0] === this.currentItem[0]) {
871 if (floating && !isOverAxis(this.positionAbs.top + this.offset.click.top, this.items[j].top, this.items[j].height)) {
874 cur = this.items[j].item.offset()[posProperty];
876 if(Math.abs(cur - base) > Math.abs(cur + this.items[j][sizeProperty] - base)){
878 cur += this.items[j][sizeProperty];
881 if(Math.abs(cur - base) < dist) {
882 dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
883 this.direction = nearBottom ? "up": "down";
887 //Check if dropOnEmpty is enabled
888 if(!itemWithLeastDistance && !this.options.dropOnEmpty) {
892 if(this.currentContainer === this.containers[innermostIndex]) {
896 itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
897 this._trigger("change", event, this._uiHash());
898 this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
899 this.currentContainer = this.containers[innermostIndex];
901 //Update the placeholder
902 this.options.placeholder.update(this.currentContainer, this.placeholder);
904 this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
905 this.containers[innermostIndex].containerCache.over = 1;
911 _createHelper: function(event) {
913 var o = this.options,
914 helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper === "clone" ? this.currentItem.clone() : this.currentItem);
916 //Add the helper to the DOM if that didn't happen already
917 if(!helper.parents("body").length) {
918 $(o.appendTo !== "parent" ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
921 if(helper[0] === this.currentItem[0]) {
922 this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
925 if(!helper[0].style.width || o.forceHelperSize) {
926 helper.width(this.currentItem.width());
928 if(!helper[0].style.height || o.forceHelperSize) {
929 helper.height(this.currentItem.height());
936 _adjustOffsetFromHelper: function(obj) {
937 if (typeof obj === "string") {
938 obj = obj.split(" ");
940 if ($.isArray(obj)) {
941 obj = {left: +obj[0], top: +obj[1] || 0};
944 this.offset.click.left = obj.left + this.margins.left;
946 if ("right" in obj) {
947 this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
950 this.offset.click.top = obj.top + this.margins.top;
952 if ("bottom" in obj) {
953 this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
957 _getParentOffset: function() {
960 //Get the offsetParent and cache its position
961 this.offsetParent = this.helper.offsetParent();
962 var po = this.offsetParent.offset();
964 // This is a special case where we need to modify a offset calculated on start, since the following happened:
965 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
966 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
967 // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
968 if(this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
969 po.left += this.scrollParent.scrollLeft();
970 po.top += this.scrollParent.scrollTop();
973 // This needs to be actually done for all browsers, since pageX/pageY includes this information
974 // with an ugly IE fix
975 if( this.offsetParent[0] === document.body || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() === "html" && $.ui.ie)) {
976 po = { top: 0, left: 0 };
980 top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
981 left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
986 _getRelativeOffset: function() {
988 if(this.cssPosition === "relative") {
989 var p = this.currentItem.position();
991 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
992 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
995 return { top: 0, left: 0 };
1000 _cacheMargins: function() {
1002 left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
1003 top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
1007 _cacheHelperProportions: function() {
1008 this.helperProportions = {
1009 width: this.helper.outerWidth(),
1010 height: this.helper.outerHeight()
1014 _setContainment: function() {
1018 if(o.containment === "parent") {
1019 o.containment = this.helper[0].parentNode;
1021 if(o.containment === "document" || o.containment === "window") {
1022 this.containment = [
1023 0 - this.offset.relative.left - this.offset.parent.left,
1024 0 - this.offset.relative.top - this.offset.parent.top,
1025 $(o.containment === "document" ? document : window).width() - this.helperProportions.width - this.margins.left,
1026 ($(o.containment === "document" ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
1030 if(!(/^(document|window|parent)$/).test(o.containment)) {
1031 ce = $(o.containment)[0];
1032 co = $(o.containment).offset();
1033 over = ($(ce).css("overflow") !== "hidden");
1035 this.containment = [
1036 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
1037 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
1038 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,
1039 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
1045 _convertPositionTo: function(d, pos) {
1048 pos = this.position;
1050 var mod = d === "absolute" ? 1 : -1,
1051 scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent,
1052 scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
1056 pos.top + // The absolute mouse position
1057 this.offset.relative.top * mod + // Only for relative positioned nodes: Relative offset from element to offset parent
1058 this.offset.parent.top * mod - // The offsetParent's offset without borders (offset + border)
1059 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
1062 pos.left + // The absolute mouse position
1063 this.offset.relative.left * mod + // Only for relative positioned nodes: Relative offset from element to offset parent
1064 this.offset.parent.left * mod - // The offsetParent's offset without borders (offset + border)
1065 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
1071 _generatePosition: function(event) {
1075 pageX = event.pageX,
1076 pageY = event.pageY,
1077 scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
1079 // This is another very weird special case that only happens for relative elements:
1080 // 1. If the css position is relative
1081 // 2. and the scroll parent is the document or similar to the offset parent
1082 // we have to refresh the relative offset during the scroll so there are no jumps
1083 if(this.cssPosition === "relative" && !(this.scrollParent[0] !== document && this.scrollParent[0] !== this.offsetParent[0])) {
1084 this.offset.relative = this._getRelativeOffset();
1088 * - Position constraining -
1089 * Constrain the position to a mix of grid, containment.
1092 if(this.originalPosition) { //If we are not dragging yet, we won't check for options
1094 if(this.containment) {
1095 if(event.pageX - this.offset.click.left < this.containment[0]) {
1096 pageX = this.containment[0] + this.offset.click.left;
1098 if(event.pageY - this.offset.click.top < this.containment[1]) {
1099 pageY = this.containment[1] + this.offset.click.top;
1101 if(event.pageX - this.offset.click.left > this.containment[2]) {
1102 pageX = this.containment[2] + this.offset.click.left;
1104 if(event.pageY - this.offset.click.top > this.containment[3]) {
1105 pageY = this.containment[3] + this.offset.click.top;
1110 top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
1111 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;
1113 left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
1114 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;
1121 pageY - // The absolute mouse position
1122 this.offset.click.top - // Click offset (relative to the element)
1123 this.offset.relative.top - // Only for relative positioned nodes: Relative offset from element to offset parent
1124 this.offset.parent.top + // The offsetParent's offset without borders (offset + border)
1125 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
1128 pageX - // The absolute mouse position
1129 this.offset.click.left - // Click offset (relative to the element)
1130 this.offset.relative.left - // Only for relative positioned nodes: Relative offset from element to offset parent
1131 this.offset.parent.left + // The offsetParent's offset without borders (offset + border)
1132 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
1138 _rearrange: function(event, i, a, hardRefresh) {
1140 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));
1142 //Various things done here to improve the performance:
1143 // 1. we create a setTimeout, that calls refreshPositions
1144 // 2. on the instance, we have a counter variable, that get's higher after every append
1145 // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
1146 // 4. this lets only the last addition to the timeout stack through
1147 this.counter = this.counter ? ++this.counter : 1;
1148 var counter = this.counter;
1150 this._delay(function() {
1151 if(counter === this.counter) {
1152 this.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
1158 _clear: function(event, noPropagation) {
1160 this.reverting = false;
1161 // We delay all events that have to be triggered to after the point where the placeholder has been removed and
1162 // everything else normalized again
1164 delayedTriggers = [];
1166 // We first have to update the dom position of the actual currentItem
1167 // Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
1168 if(!this._noFinalSort && this.currentItem.parent().length) {
1169 this.placeholder.before(this.currentItem);
1171 this._noFinalSort = null;
1173 if(this.helper[0] === this.currentItem[0]) {
1174 for(i in this._storedCSS) {
1175 if(this._storedCSS[i] === "auto" || this._storedCSS[i] === "static") {
1176 this._storedCSS[i] = "";
1179 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
1181 this.currentItem.show();
1184 if(this.fromOutside && !noPropagation) {
1185 delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
1187 if((this.fromOutside || this.domPosition.prev !== this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent !== this.currentItem.parent()[0]) && !noPropagation) {
1188 delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed
1191 // Check if the items Container has Changed and trigger appropriate
1193 if (this !== this.currentContainer) {
1194 if(!noPropagation) {
1195 delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
1196 delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); }; }).call(this, this.currentContainer));
1197 delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this)); }; }).call(this, this.currentContainer));
1202 //Post events to containers
1203 function delayEvent( type, instance, container ) {
1204 return function( event ) {
1205 container._trigger( type, event, instance._uiHash( instance ) );
1208 for (i = this.containers.length - 1; i >= 0; i--){
1209 if (!noPropagation) {
1210 delayedTriggers.push( delayEvent( "deactivate", this, this.containers[ i ] ) );
1212 if(this.containers[i].containerCache.over) {
1213 delayedTriggers.push( delayEvent( "out", this, this.containers[ i ] ) );
1214 this.containers[i].containerCache.over = 0;
1218 //Do what was originally in plugins
1219 if ( this.storedCursor ) {
1220 this.document.find( "body" ).css( "cursor", this.storedCursor );
1221 this.storedStylesheet.remove();
1223 if(this._storedOpacity) {
1224 this.helper.css("opacity", this._storedOpacity);
1226 if(this._storedZIndex) {
1227 this.helper.css("zIndex", this._storedZIndex === "auto" ? "" : this._storedZIndex);
1230 this.dragging = false;
1231 if(this.cancelHelperRemoval) {
1232 if(!noPropagation) {
1233 this._trigger("beforeStop", event, this._uiHash());
1234 for (i=0; i < delayedTriggers.length; i++) {
1235 delayedTriggers[i].call(this, event);
1236 } //Trigger all delayed events
1237 this._trigger("stop", event, this._uiHash());
1240 this.fromOutside = false;
1244 if(!noPropagation) {
1245 this._trigger("beforeStop", event, this._uiHash());
1248 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
1249 this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
1251 if(this.helper[0] !== this.currentItem[0]) {
1252 this.helper.remove();
1256 if(!noPropagation) {
1257 for (i=0; i < delayedTriggers.length; i++) {
1258 delayedTriggers[i].call(this, event);
1259 } //Trigger all delayed events
1260 this._trigger("stop", event, this._uiHash());
1263 this.fromOutside = false;
1268 _trigger: function() {
1269 if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
1274 _uiHash: function(_inst) {
1275 var inst = _inst || this;
1277 helper: inst.helper,
1278 placeholder: inst.placeholder || $([]),
1279 position: inst.position,
1280 originalPosition: inst.originalPosition,
1281 offset: inst.positionAbs,
1282 item: inst.currentItem,
1283 sender: _inst ? _inst.element : null