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+/*!
+ * jQuery UI Sortable 1.10.3
+ * http://jqueryui.com
+ *
+ * Copyright 2013 jQuery Foundation and other contributors
+ * Released under the MIT license.
+ * http://jquery.org/license
+ *
+ * http://api.jqueryui.com/sortable/
+ *
+ * Depends:
+ * jquery.ui.core.js
+ * jquery.ui.mouse.js
+ * jquery.ui.widget.js
+ */
+(function( $, undefined ) {
+
+/*jshint loopfunc: true */
+
+function isOverAxis( x, reference, size ) {
+ return ( x > reference ) && ( x < ( reference + size ) );
+}
+
+function isFloating(item) {
+ return (/left|right/).test(item.css("float")) || (/inline|table-cell/).test(item.css("display"));
+}
+
+$.widget("ui.sortable", $.ui.mouse, {
+ version: "1.10.3",
+ widgetEventPrefix: "sort",
+ ready: false,
+ options: {
+ appendTo: "parent",
+ axis: false,
+ connectWith: false,
+ containment: false,
+ cursor: "auto",
+ cursorAt: false,
+ dropOnEmpty: true,
+ forcePlaceholderSize: false,
+ forceHelperSize: false,
+ grid: false,
+ handle: false,
+ helper: "original",
+ items: "> *",
+ opacity: false,
+ placeholder: false,
+ revert: false,
+ scroll: true,
+ scrollSensitivity: 20,
+ scrollSpeed: 20,
+ scope: "default",
+ tolerance: "intersect",
+ zIndex: 1000,
+
+ // callbacks
+ activate: null,
+ beforeStop: null,
+ change: null,
+ deactivate: null,
+ out: null,
+ over: null,
+ receive: null,
+ remove: null,
+ sort: null,
+ start: null,
+ stop: null,
+ update: null
+ },
+ _create: function() {
+
+ var o = this.options;
+ this.containerCache = {};
+ this.element.addClass("ui-sortable");
+
+ //Get the items
+ this.refresh();
+
+ //Let's determine if the items are being displayed horizontally
+ this.floating = this.items.length ? o.axis === "x" || isFloating(this.items[0].item) : false;
+
+ //Let's determine the parent's offset
+ this.offset = this.element.offset();
+
+ //Initialize mouse events for interaction
+ this._mouseInit();
+
+ //We're ready to go
+ this.ready = true;
+
+ },
+
+ _destroy: function() {
+ this.element
+ .removeClass("ui-sortable ui-sortable-disabled");
+ this._mouseDestroy();
+
+ for ( var i = this.items.length - 1; i >= 0; i-- ) {
+ this.items[i].item.removeData(this.widgetName + "-item");
+ }
+
+ return this;
+ },
+
+ _setOption: function(key, value){
+ if ( key === "disabled" ) {
+ this.options[ key ] = value;
+
+ this.widget().toggleClass( "ui-sortable-disabled", !!value );
+ } else {
+ // Don't call widget base _setOption for disable as it adds ui-state-disabled class
+ $.Widget.prototype._setOption.apply(this, arguments);
+ }
+ },
+
+ _mouseCapture: function(event, overrideHandle) {
+ var currentItem = null,
+ validHandle = false,
+ that = this;
+
+ if (this.reverting) {
+ return false;
+ }
+
+ if(this.options.disabled || this.options.type === "static") {
+ return false;
+ }
+
+ //We have to refresh the items data once first
+ this._refreshItems(event);
+
+ //Find out if the clicked node (or one of its parents) is a actual item in this.items
+ $(event.target).parents().each(function() {
+ if($.data(this, that.widgetName + "-item") === that) {
+ currentItem = $(this);
+ return false;
+ }
+ });
+ if($.data(event.target, that.widgetName + "-item") === that) {
+ currentItem = $(event.target);
+ }
+
+ if(!currentItem) {
+ return false;
+ }
+ if(this.options.handle && !overrideHandle) {
+ $(this.options.handle, currentItem).find("*").addBack().each(function() {
+ if(this === event.target) {
+ validHandle = true;
+ }
+ });
+ if(!validHandle) {
+ return false;
+ }
+ }
+
+ this.currentItem = currentItem;
+ this._removeCurrentsFromItems();
+ return true;
+
+ },
+
+ _mouseStart: function(event, overrideHandle, noActivation) {
+
+ var i, body,
+ o = this.options;
+
+ this.currentContainer = this;
+
+ //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
+ this.refreshPositions();
+
+ //Create and append the visible helper
+ this.helper = this._createHelper(event);
+
+ //Cache the helper size
+ this._cacheHelperProportions();
+
+ /*
+ * - Position generation -
+ * This block generates everything position related - it's the core of draggables.
+ */
+
+ //Cache the margins of the original element
+ this._cacheMargins();
+
+ //Get the next scrolling parent
+ this.scrollParent = this.helper.scrollParent();
+
+ //The element's absolute position on the page minus margins
+ this.offset = this.currentItem.offset();
+ this.offset = {
+ top: this.offset.top - this.margins.top,
+ left: this.offset.left - this.margins.left
+ };
+
+ $.extend(this.offset, {
+ click: { //Where the click happened, relative to the element
+ left: event.pageX - this.offset.left,
+ top: event.pageY - this.offset.top
+ },
+ parent: this._getParentOffset(),
+ relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
+ });
+
+ // Only after we got the offset, we can change the helper's position to absolute
+ // TODO: Still need to figure out a way to make relative sorting possible
+ this.helper.css("position", "absolute");
+ this.cssPosition = this.helper.css("position");
+
+ //Generate the original position
+ this.originalPosition = this._generatePosition(event);
+ this.originalPageX = event.pageX;
+ this.originalPageY = event.pageY;
+
+ //Adjust the mouse offset relative to the helper if "cursorAt" is supplied
+ (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
+
+ //Cache the former DOM position
+ this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
+
+ //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
+ if(this.helper[0] !== this.currentItem[0]) {
+ this.currentItem.hide();
+ }
+
+ //Create the placeholder
+ this._createPlaceholder();
+
+ //Set a containment if given in the options
+ if(o.containment) {
+ this._setContainment();
+ }
+
+ if( o.cursor && o.cursor !== "auto" ) { // cursor option
+ body = this.document.find( "body" );
+
+ // support: IE
+ this.storedCursor = body.css( "cursor" );
+ body.css( "cursor", o.cursor );
+
+ this.storedStylesheet = $( "<style>*{ cursor: "+o.cursor+" !important; }</style>" ).appendTo( body );
+ }
+
+ if(o.opacity) { // opacity option
+ if (this.helper.css("opacity")) {
+ this._storedOpacity = this.helper.css("opacity");
+ }
+ this.helper.css("opacity", o.opacity);
+ }
+
+ if(o.zIndex) { // zIndex option
+ if (this.helper.css("zIndex")) {
+ this._storedZIndex = this.helper.css("zIndex");
+ }
+ this.helper.css("zIndex", o.zIndex);
+ }
+
+ //Prepare scrolling
+ if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
+ this.overflowOffset = this.scrollParent.offset();
+ }
+
+ //Call callbacks
+ this._trigger("start", event, this._uiHash());
+
+ //Recache the helper size
+ if(!this._preserveHelperProportions) {
+ this._cacheHelperProportions();
+ }
+
+
+ //Post "activate" events to possible containers
+ if( !noActivation ) {
+ for ( i = this.containers.length - 1; i >= 0; i-- ) {
+ this.containers[ i ]._trigger( "activate", event, this._uiHash( this ) );
+ }
+ }
+
+ //Prepare possible droppables
+ if($.ui.ddmanager) {
+ $.ui.ddmanager.current = this;
+ }
+
+ if ($.ui.ddmanager && !o.dropBehaviour) {
+ $.ui.ddmanager.prepareOffsets(this, event);
+ }
+
+ this.dragging = true;
+
+ this.helper.addClass("ui-sortable-helper");
+ this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
+ return true;
+
+ },
+
+ _mouseDrag: function(event) {
+ var i, item, itemElement, intersection,
+ o = this.options,
+ scrolled = false;
+
+ //Compute the helpers position
+ this.position = this._generatePosition(event);
+ this.positionAbs = this._convertPositionTo("absolute");
+
+ if (!this.lastPositionAbs) {
+ this.lastPositionAbs = this.positionAbs;
+ }
+
+ //Do scrolling
+ if(this.options.scroll) {
+ if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
+
+ if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
+ this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
+ } else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity) {
+ this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
+ }
+
+ if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
+ this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
+ } else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity) {
+ this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
+ }
+
+ } else {
+
+ if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
+ scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
+ } else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
+ scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
+ }
+
+ if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
+ scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
+ } else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
+ scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
+ }
+
+ }
+
+ if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
+ $.ui.ddmanager.prepareOffsets(this, event);
+ }
+ }
+
+ //Regenerate the absolute position used for position checks
+ this.positionAbs = this._convertPositionTo("absolute");
+
+ //Set the helper position
+ if(!this.options.axis || this.options.axis !== "y") {
+ this.helper[0].style.left = this.position.left+"px";
+ }
+ if(!this.options.axis || this.options.axis !== "x") {
+ this.helper[0].style.top = this.position.top+"px";
+ }
+
+ //Rearrange
+ for (i = this.items.length - 1; i >= 0; i--) {
+
+ //Cache variables and intersection, continue if no intersection
+ item = this.items[i];
+ itemElement = item.item[0];
+ intersection = this._intersectsWithPointer(item);
+ if (!intersection) {
+ continue;
+ }
+
+ // Only put the placeholder inside the current Container, skip all
+ // items form other containers. This works because when moving
+ // an item from one container to another the
+ // currentContainer is switched before the placeholder is moved.
+ //
+ // Without this moving items in "sub-sortables" can cause the placeholder to jitter
+ // beetween the outer and inner container.
+ if (item.instance !== this.currentContainer) {
+ continue;
+ }
+
+ // cannot intersect with itself
+ // no useless actions that have been done before
+ // no action if the item moved is the parent of the item checked
+ if (itemElement !== this.currentItem[0] &&
+ this.placeholder[intersection === 1 ? "next" : "prev"]()[0] !== itemElement &&
+ !$.contains(this.placeholder[0], itemElement) &&
+ (this.options.type === "semi-dynamic" ? !$.contains(this.element[0], itemElement) : true)
+ ) {
+
+ this.direction = intersection === 1 ? "down" : "up";
+
+ if (this.options.tolerance === "pointer" || this._intersectsWithSides(item)) {
+ this._rearrange(event, item);
+ } else {
+ break;
+ }
+
+ this._trigger("change", event, this._uiHash());
+ break;
+ }
+ }
+
+ //Post events to containers
+ this._contactContainers(event);
+
+ //Interconnect with droppables
+ if($.ui.ddmanager) {
+ $.ui.ddmanager.drag(this, event);
+ }
+
+ //Call callbacks
+ this._trigger("sort", event, this._uiHash());
+
+ this.lastPositionAbs = this.positionAbs;
+ return false;
+
+ },
+
+ _mouseStop: function(event, noPropagation) {
+
+ if(!event) {
+ return;
+ }
+
+ //If we are using droppables, inform the manager about the drop
+ if ($.ui.ddmanager && !this.options.dropBehaviour) {
+ $.ui.ddmanager.drop(this, event);
+ }
+
+ if(this.options.revert) {
+ var that = this,
+ cur = this.placeholder.offset(),
+ axis = this.options.axis,
+ animation = {};
+
+ if ( !axis || axis === "x" ) {
+ animation.left = cur.left - this.offset.parent.left - this.margins.left + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollLeft);
+ }
+ if ( !axis || axis === "y" ) {
+ animation.top = cur.top - this.offset.parent.top - this.margins.top + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollTop);
+ }
+ this.reverting = true;
+ $(this.helper).animate( animation, parseInt(this.options.revert, 10) || 500, function() {
+ that._clear(event);
+ });
+ } else {
+ this._clear(event, noPropagation);
+ }
+
+ return false;
+
+ },
+
+ cancel: function() {
+
+ if(this.dragging) {
+
+ this._mouseUp({ target: null });
+
+ if(this.options.helper === "original") {
+ this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
+ } else {
+ this.currentItem.show();
+ }
+
+ //Post deactivating events to containers
+ for (var i = this.containers.length - 1; i >= 0; i--){
+ this.containers[i]._trigger("deactivate", null, this._uiHash(this));
+ if(this.containers[i].containerCache.over) {
+ this.containers[i]._trigger("out", null, this._uiHash(this));
+ this.containers[i].containerCache.over = 0;
+ }
+ }
+
+ }
+
+ if (this.placeholder) {
+ //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
+ if(this.placeholder[0].parentNode) {
+ this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
+ }
+ if(this.options.helper !== "original" && this.helper && this.helper[0].parentNode) {
+ this.helper.remove();
+ }
+
+ $.extend(this, {
+ helper: null,
+ dragging: false,
+ reverting: false,
+ _noFinalSort: null
+ });
+
+ if(this.domPosition.prev) {
+ $(this.domPosition.prev).after(this.currentItem);
+ } else {
+ $(this.domPosition.parent).prepend(this.currentItem);
+ }
+ }
+
+ return this;
+
+ },
+
+ serialize: function(o) {
+
+ var items = this._getItemsAsjQuery(o && o.connected),
+ str = [];
+ o = o || {};
+
+ $(items).each(function() {
+ var res = ($(o.item || this).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[\-=_](.+)/));
+ if (res) {
+ str.push((o.key || res[1]+"[]")+"="+(o.key && o.expression ? res[1] : res[2]));
+ }
+ });
+
+ if(!str.length && o.key) {
+ str.push(o.key + "=");
+ }
+
+ return str.join("&");
+
+ },
+
+ toArray: function(o) {
+
+ var items = this._getItemsAsjQuery(o && o.connected),
+ ret = [];
+
+ o = o || {};
+
+ items.each(function() { ret.push($(o.item || this).attr(o.attribute || "id") || ""); });
+ return ret;
+
+ },
+
+ /* Be careful with the following core functions */
+ _intersectsWith: function(item) {
+
+ var x1 = this.positionAbs.left,
+ x2 = x1 + this.helperProportions.width,
+ y1 = this.positionAbs.top,
+ y2 = y1 + this.helperProportions.height,
+ l = item.left,
+ r = l + item.width,
+ t = item.top,
+ b = t + item.height,
+ dyClick = this.offset.click.top,
+ dxClick = this.offset.click.left,
+ isOverElementHeight = ( this.options.axis === "x" ) || ( ( y1 + dyClick ) > t && ( y1 + dyClick ) < b ),
+ isOverElementWidth = ( this.options.axis === "y" ) || ( ( x1 + dxClick ) > l && ( x1 + dxClick ) < r ),
+ isOverElement = isOverElementHeight && isOverElementWidth;
+
+ if ( this.options.tolerance === "pointer" ||
+ this.options.forcePointerForContainers ||
+ (this.options.tolerance !== "pointer" && this.helperProportions[this.floating ? "width" : "height"] > item[this.floating ? "width" : "height"])
+ ) {
+ return isOverElement;
+ } else {
+
+ return (l < x1 + (this.helperProportions.width / 2) && // Right Half
+ x2 - (this.helperProportions.width / 2) < r && // Left Half
+ t < y1 + (this.helperProportions.height / 2) && // Bottom Half
+ y2 - (this.helperProportions.height / 2) < b ); // Top Half
+
+ }
+ },
+
+ _intersectsWithPointer: function(item) {
+
+ var isOverElementHeight = (this.options.axis === "x") || isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
+ isOverElementWidth = (this.options.axis === "y") || isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
+ isOverElement = isOverElementHeight && isOverElementWidth,
+ verticalDirection = this._getDragVerticalDirection(),
+ horizontalDirection = this._getDragHorizontalDirection();
+
+ if (!isOverElement) {
+ return false;
+ }
+
+ return this.floating ?
+ ( ((horizontalDirection && horizontalDirection === "right") || verticalDirection === "down") ? 2 : 1 )
+ : ( verticalDirection && (verticalDirection === "down" ? 2 : 1) );
+
+ },
+
+ _intersectsWithSides: function(item) {
+
+ var isOverBottomHalf = isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
+ isOverRightHalf = isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
+ verticalDirection = this._getDragVerticalDirection(),
+ horizontalDirection = this._getDragHorizontalDirection();
+
+ if (this.floating && horizontalDirection) {
+ return ((horizontalDirection === "right" && isOverRightHalf) || (horizontalDirection === "left" && !isOverRightHalf));
+ } else {
+ return verticalDirection && ((verticalDirection === "down" && isOverBottomHalf) || (verticalDirection === "up" && !isOverBottomHalf));
+ }
+
+ },
+
+ _getDragVerticalDirection: function() {
+ var delta = this.positionAbs.top - this.lastPositionAbs.top;
+ return delta !== 0 && (delta > 0 ? "down" : "up");
+ },
+
+ _getDragHorizontalDirection: function() {
+ var delta = this.positionAbs.left - this.lastPositionAbs.left;
+ return delta !== 0 && (delta > 0 ? "right" : "left");
+ },
+
+ refresh: function(event) {
+ this._refreshItems(event);
+ this.refreshPositions();
+ return this;
+ },
+
+ _connectWith: function() {
+ var options = this.options;
+ return options.connectWith.constructor === String ? [options.connectWith] : options.connectWith;
+ },
+
+ _getItemsAsjQuery: function(connected) {
+
+ var i, j, cur, inst,
+ items = [],
+ queries = [],
+ connectWith = this._connectWith();
+
+ if(connectWith && connected) {
+ for (i = connectWith.length - 1; i >= 0; i--){
+ cur = $(connectWith[i]);
+ for ( j = cur.length - 1; j >= 0; j--){
+ inst = $.data(cur[j], this.widgetFullName);
+ if(inst && inst !== this && !inst.options.disabled) {
+ queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not(".ui-sortable-placeholder"), inst]);
+ }
+ }
+ }
+ }
+
+ queries.push([$.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]);
+
+ for (i = queries.length - 1; i >= 0; i--){
+ queries[i][0].each(function() {
+ items.push(this);
+ });
+ }
+
+ return $(items);
+
+ },
+
+ _removeCurrentsFromItems: function() {
+
+ var list = this.currentItem.find(":data(" + this.widgetName + "-item)");
+
+ this.items = $.grep(this.items, function (item) {
+ for (var j=0; j < list.length; j++) {
+ if(list[j] === item.item[0]) {
+ return false;
+ }
+ }
+ return true;
+ });
+
+ },
+
+ _refreshItems: function(event) {
+
+ this.items = [];
+ this.containers = [this];
+
+ var i, j, cur, inst, targetData, _queries, item, queriesLength,
+ items = this.items,
+ queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]],
+ connectWith = this._connectWith();
+
+ if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down
+ for (i = connectWith.length - 1; i >= 0; i--){
+ cur = $(connectWith[i]);
+ for (j = cur.length - 1; j >= 0; j--){
+ inst = $.data(cur[j], this.widgetFullName);
+ if(inst && inst !== this && !inst.options.disabled) {
+ queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
+ this.containers.push(inst);
+ }
+ }
+ }
+ }
+
+ for (i = queries.length - 1; i >= 0; i--) {
+ targetData = queries[i][1];
+ _queries = queries[i][0];
+
+ for (j=0, queriesLength = _queries.length; j < queriesLength; j++) {
+ item = $(_queries[j]);
+
+ item.data(this.widgetName + "-item", targetData); // Data for target checking (mouse manager)
+
+ items.push({
+ item: item,
+ instance: targetData,
+ width: 0, height: 0,
+ left: 0, top: 0
+ });
+ }
+ }
+
+ },
+
+ refreshPositions: function(fast) {
+
+ //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
+ if(this.offsetParent && this.helper) {
+ this.offset.parent = this._getParentOffset();
+ }
+
+ var i, item, t, p;
+
+ for (i = this.items.length - 1; i >= 0; i--){
+ item = this.items[i];
+
+ //We ignore calculating positions of all connected containers when we're not over them
+ if(item.instance !== this.currentContainer && this.currentContainer && item.item[0] !== this.currentItem[0]) {
+ continue;
+ }
+
+ t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
+
+ if (!fast) {
+ item.width = t.outerWidth();
+ item.height = t.outerHeight();
+ }
+
+ p = t.offset();
+ item.left = p.left;
+ item.top = p.top;
+ }
+
+ if(this.options.custom && this.options.custom.refreshContainers) {
+ this.options.custom.refreshContainers.call(this);
+ } else {
+ for (i = this.containers.length - 1; i >= 0; i--){
+ p = this.containers[i].element.offset();
+ this.containers[i].containerCache.left = p.left;
+ this.containers[i].containerCache.top = p.top;
+ this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
+ this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
+ }
+ }
+
+ return this;
+ },
+
+ _createPlaceholder: function(that) {
+ that = that || this;
+ var className,
+ o = that.options;
+
+ if(!o.placeholder || o.placeholder.constructor === String) {
+ className = o.placeholder;
+ o.placeholder = {
+ element: function() {
+
+ var nodeName = that.currentItem[0].nodeName.toLowerCase(),
+ element = $( "<" + nodeName + ">", that.document[0] )
+ .addClass(className || that.currentItem[0].className+" ui-sortable-placeholder")
+ .removeClass("ui-sortable-helper");
+
+ if ( nodeName === "tr" ) {
+ that.currentItem.children().each(function() {
+ $( "<td>&#160;</td>", that.document[0] )
+ .attr( "colspan", $( this ).attr( "colspan" ) || 1 )
+ .appendTo( element );
+ });
+ } else if ( nodeName === "img" ) {
+ element.attr( "src", that.currentItem.attr( "src" ) );
+ }
+
+ if ( !className ) {
+ element.css( "visibility", "hidden" );
+ }
+
+ return element;
+ },
+ update: function(container, p) {
+
+ // 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
+ // 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
+ if(className && !o.forcePlaceholderSize) {
+ return;
+ }
+
+ //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
+ if(!p.height()) { p.height(that.currentItem.innerHeight() - parseInt(that.currentItem.css("paddingTop")||0, 10) - parseInt(that.currentItem.css("paddingBottom")||0, 10)); }
+ if(!p.width()) { p.width(that.currentItem.innerWidth() - parseInt(that.currentItem.css("paddingLeft")||0, 10) - parseInt(that.currentItem.css("paddingRight")||0, 10)); }
+ }
+ };
+ }
+
+ //Create the placeholder
+ that.placeholder = $(o.placeholder.element.call(that.element, that.currentItem));
+
+ //Append it after the actual current item
+ that.currentItem.after(that.placeholder);
+
+ //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
+ o.placeholder.update(that, that.placeholder);
+
+ },
+
+ _contactContainers: function(event) {
+ var i, j, dist, itemWithLeastDistance, posProperty, sizeProperty, base, cur, nearBottom, floating,
+ innermostContainer = null,
+ innermostIndex = null;
+
+ // get innermost container that intersects with item
+ for (i = this.containers.length - 1; i >= 0; i--) {
+
+ // never consider a container that's located within the item itself
+ if($.contains(this.currentItem[0], this.containers[i].element[0])) {
+ continue;
+ }
+
+ if(this._intersectsWith(this.containers[i].containerCache)) {
+
+ // if we've already found a container and it's more "inner" than this, then continue
+ if(innermostContainer && $.contains(this.containers[i].element[0], innermostContainer.element[0])) {
+ continue;
+ }
+
+ innermostContainer = this.containers[i];
+ innermostIndex = i;
+
+ } else {
+ // container doesn't intersect. trigger "out" event if necessary
+ if(this.containers[i].containerCache.over) {
+ this.containers[i]._trigger("out", event, this._uiHash(this));
+ this.containers[i].containerCache.over = 0;
+ }
+ }
+
+ }
+
+ // if no intersecting containers found, return
+ if(!innermostContainer) {
+ return;
+ }
+
+ // move the item into the container if it's not there already
+ if(this.containers.length === 1) {
+ if (!this.containers[innermostIndex].containerCache.over) {
+ this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
+ this.containers[innermostIndex].containerCache.over = 1;
+ }
+ } else {
+
+ //When entering a new container, we will find the item with the least distance and append our item near it
+ dist = 10000;
+ itemWithLeastDistance = null;
+ floating = innermostContainer.floating || isFloating(this.currentItem);
+ posProperty = floating ? "left" : "top";
+ sizeProperty = floating ? "width" : "height";
+ base = this.positionAbs[posProperty] + this.offset.click[posProperty];
+ for (j = this.items.length - 1; j >= 0; j--) {
+ if(!$.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) {
+ continue;
+ }
+ if(this.items[j].item[0] === this.currentItem[0]) {
+ continue;
+ }
+ if (floating && !isOverAxis(this.positionAbs.top + this.offset.click.top, this.items[j].top, this.items[j].height)) {
+ continue;
+ }
+ cur = this.items[j].item.offset()[posProperty];
+ nearBottom = false;
+ if(Math.abs(cur - base) > Math.abs(cur + this.items[j][sizeProperty] - base)){
+ nearBottom = true;
+ cur += this.items[j][sizeProperty];
+ }
+
+ if(Math.abs(cur - base) < dist) {
+ dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
+ this.direction = nearBottom ? "up": "down";
+ }
+ }
+
+ //Check if dropOnEmpty is enabled
+ if(!itemWithLeastDistance && !this.options.dropOnEmpty) {
+ return;
+ }
+
+ if(this.currentContainer === this.containers[innermostIndex]) {
+ return;
+ }
+
+ itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
+ this._trigger("change", event, this._uiHash());
+ this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
+ this.currentContainer = this.containers[innermostIndex];
+
+ //Update the placeholder
+ this.options.placeholder.update(this.currentContainer, this.placeholder);
+
+ this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
+ this.containers[innermostIndex].containerCache.over = 1;
+ }
+
+
+ },
+
+ _createHelper: function(event) {
+
+ var o = this.options,
+ helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper === "clone" ? this.currentItem.clone() : this.currentItem);
+
+ //Add the helper to the DOM if that didn't happen already
+ if(!helper.parents("body").length) {
+ $(o.appendTo !== "parent" ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
+ }
+
+ if(helper[0] === this.currentItem[0]) {
+ this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
+ }
+
+ if(!helper[0].style.width || o.forceHelperSize) {
+ helper.width(this.currentItem.width());
+ }
+ if(!helper[0].style.height || o.forceHelperSize) {
+ helper.height(this.currentItem.height());
+ }
+
+ return helper;
+
+ },
+
+ _adjustOffsetFromHelper: function(obj) {
+ if (typeof obj === "string") {
+ obj = obj.split(" ");
+ }
+ if ($.isArray(obj)) {
+ obj = {left: +obj[0], top: +obj[1] || 0};
+ }
+ if ("left" in obj) {
+ this.offset.click.left = obj.left + this.margins.left;
+ }
+ if ("right" in obj) {
+ this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
+ }
+ if ("top" in obj) {
+ this.offset.click.top = obj.top + this.margins.top;
+ }
+ if ("bottom" in obj) {
+ this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
+ }
+ },
+
+ _getParentOffset: function() {
+
+
+ //Get the offsetParent and cache its position
+ this.offsetParent = this.helper.offsetParent();
+ var po = this.offsetParent.offset();
+
+ // This is a special case where we need to modify a offset calculated on start, since the following happened:
+ // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
+ // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
+ // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
+ if(this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
+ po.left += this.scrollParent.scrollLeft();
+ po.top += this.scrollParent.scrollTop();
+ }
+
+ // This needs to be actually done for all browsers, since pageX/pageY includes this information
+ // with an ugly IE fix
+ if( this.offsetParent[0] === document.body || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() === "html" && $.ui.ie)) {
+ po = { top: 0, left: 0 };
+ }
+
+ return {
+ top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
+ left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
+ };
+
+ },
+
+ _getRelativeOffset: function() {
+
+ if(this.cssPosition === "relative") {
+ var p = this.currentItem.position();
+ return {
+ top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
+ left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
+ };
+ } else {
+ return { top: 0, left: 0 };
+ }
+
+ },
+
+ _cacheMargins: function() {
+ this.margins = {
+ left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
+ top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
+ };
+ },
+
+ _cacheHelperProportions: function() {
+ this.helperProportions = {
+ width: this.helper.outerWidth(),
+ height: this.helper.outerHeight()
+ };
+ },
+
+ _setContainment: function() {
+
+ var ce, co, over,
+ o = this.options;
+ if(o.containment === "parent") {
+ o.containment = this.helper[0].parentNode;
+ }
+ if(o.containment === "document" || o.containment === "window") {
+ this.containment = [
+ 0 - this.offset.relative.left - this.offset.parent.left,
+ 0 - this.offset.relative.top - this.offset.parent.top,
+ $(o.containment === "document" ? document : window).width() - this.helperProportions.width - this.margins.left,
+ ($(o.containment === "document" ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
+ ];
+ }
+
+ if(!(/^(document|window|parent)$/).test(o.containment)) {
+ ce = $(o.containment)[0];
+ co = $(o.containment).offset();
+ over = ($(ce).css("overflow") !== "hidden");
+
+ this.containment = [
+ co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
+ co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
+ 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,
+ 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
+ ];
+ }
+
+ },
+
+ _convertPositionTo: function(d, pos) {
+
+ if(!pos) {
+ pos = this.position;
+ }
+ var mod = d === "absolute" ? 1 : -1,
+ 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);
+
+ return {
+ top: (
+ pos.top + // The absolute mouse position
+ this.offset.relative.top * mod + // Only for relative positioned nodes: Relative offset from element to offset parent
+ this.offset.parent.top * mod - // The offsetParent's offset without borders (offset + border)
+ ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
+ ),
+ left: (
+ pos.left + // The absolute mouse position
+ this.offset.relative.left * mod + // Only for relative positioned nodes: Relative offset from element to offset parent
+ this.offset.parent.left * mod - // The offsetParent's offset without borders (offset + border)
+ ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
+ )
+ };
+
+ },
+
+ _generatePosition: function(event) {
+
+ var top, left,
+ o = this.options,
+ pageX = event.pageX,
+ pageY = event.pageY,
+ 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);
+
+ // This is another very weird special case that only happens for relative elements:
+ // 1. If the css position is relative
+ // 2. and the scroll parent is the document or similar to the offset parent
+ // we have to refresh the relative offset during the scroll so there are no jumps
+ if(this.cssPosition === "relative" && !(this.scrollParent[0] !== document && this.scrollParent[0] !== this.offsetParent[0])) {
+ this.offset.relative = this._getRelativeOffset();
+ }
+
+ /*
+ * - Position constraining -
+ * Constrain the position to a mix of grid, containment.
+ */
+
+ if(this.originalPosition) { //If we are not dragging yet, we won't check for options
+
+ if(this.containment) {
+ if(event.pageX - this.offset.click.left < this.containment[0]) {
+ pageX = this.containment[0] + this.offset.click.left;
+ }
+ if(event.pageY - this.offset.click.top < this.containment[1]) {
+ pageY = this.containment[1] + this.offset.click.top;
+ }
+ if(event.pageX - this.offset.click.left > this.containment[2]) {
+ pageX = this.containment[2] + this.offset.click.left;
+ }
+ if(event.pageY - this.offset.click.top > this.containment[3]) {
+ pageY = this.containment[3] + this.offset.click.top;
+ }
+ }
+
+ if(o.grid) {
+ top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
+ 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;
+
+ left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
+ 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;
+ }
+
+ }
+
+ return {
+ top: (
+ pageY - // The absolute mouse position
+ this.offset.click.top - // Click offset (relative to the element)
+ this.offset.relative.top - // Only for relative positioned nodes: Relative offset from element to offset parent
+ this.offset.parent.top + // The offsetParent's offset without borders (offset + border)
+ ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
+ ),
+ left: (
+ pageX - // The absolute mouse position
+ this.offset.click.left - // Click offset (relative to the element)
+ this.offset.relative.left - // Only for relative positioned nodes: Relative offset from element to offset parent
+ this.offset.parent.left + // The offsetParent's offset without borders (offset + border)
+ ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
+ )
+ };
+
+ },
+
+ _rearrange: function(event, i, a, hardRefresh) {
+
+ 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));
+
+ //Various things done here to improve the performance:
+ // 1. we create a setTimeout, that calls refreshPositions
+ // 2. on the instance, we have a counter variable, that get's higher after every append
+ // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
+ // 4. this lets only the last addition to the timeout stack through
+ this.counter = this.counter ? ++this.counter : 1;
+ var counter = this.counter;
+
+ this._delay(function() {
+ if(counter === this.counter) {
+ this.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
+ }
+ });
+
+ },
+
+ _clear: function(event, noPropagation) {
+
+ this.reverting = false;
+ // We delay all events that have to be triggered to after the point where the placeholder has been removed and
+ // everything else normalized again
+ var i,
+ delayedTriggers = [];
+
+ // We first have to update the dom position of the actual currentItem
+ // Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
+ if(!this._noFinalSort && this.currentItem.parent().length) {
+ this.placeholder.before(this.currentItem);
+ }
+ this._noFinalSort = null;
+
+ if(this.helper[0] === this.currentItem[0]) {
+ for(i in this._storedCSS) {
+ if(this._storedCSS[i] === "auto" || this._storedCSS[i] === "static") {
+ this._storedCSS[i] = "";
+ }
+ }
+ this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
+ } else {
+ this.currentItem.show();
+ }
+
+ if(this.fromOutside && !noPropagation) {
+ delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
+ }
+ 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
+ }
+
+ // Check if the items Container has Changed and trigger appropriate
+ // events.
+ if (this !== this.currentContainer) {
+ if(!noPropagation) {
+ delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
+ delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); }; }).call(this, this.currentContainer));
+ delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this)); }; }).call(this, this.currentContainer));
+ }
+ }
+
+
+ //Post events to containers
+ for (i = this.containers.length - 1; i >= 0; i--){
+ if(!noPropagation) {
+ delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
+ }
+ if(this.containers[i].containerCache.over) {
+ delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
+ this.containers[i].containerCache.over = 0;
+ }
+ }
+
+ //Do what was originally in plugins
+ if ( this.storedCursor ) {
+ this.document.find( "body" ).css( "cursor", this.storedCursor );
+ this.storedStylesheet.remove();
+ }
+ if(this._storedOpacity) {
+ this.helper.css("opacity", this._storedOpacity);
+ }
+ if(this._storedZIndex) {
+ this.helper.css("zIndex", this._storedZIndex === "auto" ? "" : this._storedZIndex);
+ }
+
+ this.dragging = false;
+ if(this.cancelHelperRemoval) {
+ if(!noPropagation) {
+ this._trigger("beforeStop", event, this._uiHash());
+ for (i=0; i < delayedTriggers.length; i++) {
+ delayedTriggers[i].call(this, event);
+ } //Trigger all delayed events
+ this._trigger("stop", event, this._uiHash());
+ }
+
+ this.fromOutside = false;
+ return false;
+ }
+
+ if(!noPropagation) {
+ this._trigger("beforeStop", event, this._uiHash());
+ }
+
+ //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
+ this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
+
+ if(this.helper[0] !== this.currentItem[0]) {
+ this.helper.remove();
+ }
+ this.helper = null;
+
+ if(!noPropagation) {
+ for (i=0; i < delayedTriggers.length; i++) {
+ delayedTriggers[i].call(this, event);
+ } //Trigger all delayed events
+ this._trigger("stop", event, this._uiHash());
+ }
+
+ this.fromOutside = false;
+ return true;
+
+ },
+
+ _trigger: function() {
+ if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
+ this.cancel();
+ }
+ },
+
+ _uiHash: function(_inst) {
+ var inst = _inst || this;
+ return {
+ helper: inst.helper,
+ placeholder: inst.placeholder || $([]),
+ position: inst.position,
+ originalPosition: inst.originalPosition,
+ offset: inst.positionAbs,
+ item: inst.currentItem,
+ sender: _inst ? _inst.element : null
+ };
+ }
+
+});
+
+})(jQuery);
Copyright © 2017-2018 Aaron LI. All Rights Reserved.