/*!

* jQuery UI Draggable 1.11.4
* http://jqueryui.com
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/draggable/
*/

(function( factory ) {

if ( typeof define === "function" && define.amd ) {

        // AMD. Register as an anonymous module.
        define([
                "jquery",
                "./core",
                "./mouse",
                "./widget"
        ], factory );
} else {

        // Browser globals
        factory( jQuery );
}

}(function( $ ) {

$.widget(“ui.draggable”, $.ui.mouse, {

version: "1.11.4",
widgetEventPrefix: "drag",
options: {
        addClasses: true,
        appendTo: "parent",
        axis: false,
        connectToSortable: false,
        containment: false,
        cursor: "auto",
        cursorAt: false,
        grid: false,
        handle: false,
        helper: "original",
        iframeFix: false,
        opacity: false,
        refreshPositions: false,
        revert: false,
        revertDuration: 500,
        scope: "default",
        scroll: true,
        scrollSensitivity: 20,
        scrollSpeed: 20,
        snap: false,
        snapMode: "both",
        snapTolerance: 20,
        stack: false,
        zIndex: false,

        // callbacks
        drag: null,
        start: null,
        stop: null
},
_create: function() {

        if ( this.options.helper === "original" ) {
                this._setPositionRelative();
        }
        if (this.options.addClasses){
                this.element.addClass("ui-draggable");
        }
        if (this.options.disabled){
                this.element.addClass("ui-draggable-disabled");
        }
        this._setHandleClassName();

        this._mouseInit();
},

_setOption: function( key, value ) {
        this._super( key, value );
        if ( key === "handle" ) {
                this._removeHandleClassName();
                this._setHandleClassName();
        }
},

_destroy: function() {
        if ( ( this.helper || this.element ).is( ".ui-draggable-dragging" ) ) {
                this.destroyOnClear = true;
                return;
        }
        this.element.removeClass( "ui-draggable ui-draggable-dragging ui-draggable-disabled" );
        this._removeHandleClassName();
        this._mouseDestroy();
},

_mouseCapture: function(event) {
        var o = this.options;

        this._blurActiveElement( event );

        // among others, prevent a drag on a resizable-handle
        if (this.helper || o.disabled || $(event.target).closest(".ui-resizable-handle").length > 0) {
                return false;
        }

        //Quit if we're not on a valid handle
        this.handle = this._getHandle(event);
        if (!this.handle) {
                return false;
        }

        this._blockFrames( o.iframeFix === true ? "iframe" : o.iframeFix );

        return true;

},

_blockFrames: function( selector ) {
        this.iframeBlocks = this.document.find( selector ).map(function() {
                var iframe = $( this );

                return $( "<div>" )
                        .css( "position", "absolute" )
                        .appendTo( iframe.parent() )
                        .outerWidth( iframe.outerWidth() )
                        .outerHeight( iframe.outerHeight() )
                        .offset( iframe.offset() )[ 0 ];
        });
},

_unblockFrames: function() {
        if ( this.iframeBlocks ) {
                this.iframeBlocks.remove();
                delete this.iframeBlocks;
        }
},

_blurActiveElement: function( event ) {
        var document = this.document[ 0 ];

        // Only need to blur if the event occurred on the draggable itself, see #10527
        if ( !this.handleElement.is( event.target ) ) {
                return;
        }

        // support: IE9
        // IE9 throws an "Unspecified error" accessing document.activeElement from an <iframe>
        try {

                // Support: IE9, IE10
                // If the <body> is blurred, IE will switch windows, see #9520
                if ( document.activeElement && document.activeElement.nodeName.toLowerCase() !== "body" ) {

                        // Blur any element that currently has focus, see #4261
                        $( document.activeElement ).blur();
                }
        } catch ( error ) {}
},

_mouseStart: function(event) {

        var o = this.options;

        //Create and append the visible helper
        this.helper = this._createHelper(event);

        this.helper.addClass("ui-draggable-dragging");

        //Cache the helper size
        this._cacheHelperProportions();

        //If ddmanager is used for droppables, set the global draggable
        if ($.ui.ddmanager) {
                $.ui.ddmanager.current = this;
        }

        /*
         * - Position generation -
         * This block generates everything position related - it's the core of draggables.
         */

        //Cache the margins of the original element
        this._cacheMargins();

        //Store the helper's css position
        this.cssPosition = this.helper.css( "position" );
        this.scrollParent = this.helper.scrollParent( true );
        this.offsetParent = this.helper.offsetParent();
        this.hasFixedAncestor = this.helper.parents().filter(function() {
                        return $( this ).css( "position" ) === "fixed";
                }).length > 0;

        //The element's absolute position on the page minus margins
        this.positionAbs = this.element.offset();
        this._refreshOffsets( event );

        //Generate the original position
        this.originalPosition = this.position = this._generatePosition( event, false );
        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));

        //Set a containment if given in the options
        this._setContainment();

        //Trigger event + callbacks
        if (this._trigger("start", event) === false) {
                this._clear();
                return false;
        }

        //Recache the helper size
        this._cacheHelperProportions();

        //Prepare the droppable offsets
        if ($.ui.ddmanager && !o.dropBehaviour) {
                $.ui.ddmanager.prepareOffsets(this, event);
        }

        // Reset helper's right/bottom css if they're set and set explicit width/height instead
        // as this prevents resizing of elements with right/bottom set (see #7772)
        this._normalizeRightBottom();

        this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position

        //If the ddmanager is used for droppables, inform the manager that dragging has started (see #5003)
        if ( $.ui.ddmanager ) {
                $.ui.ddmanager.dragStart(this, event);
        }

        return true;
},

_refreshOffsets: function( event ) {
        this.offset = {
                top: this.positionAbs.top - this.margins.top,
                left: this.positionAbs.left - this.margins.left,
                scroll: false,
                parent: this._getParentOffset(),
                relative: this._getRelativeOffset()
        };

        this.offset.click = {
                left: event.pageX - this.offset.left,
                top: event.pageY - this.offset.top
        };
},

_mouseDrag: function(event, noPropagation) {
        // reset any necessary cached properties (see #5009)
        if ( this.hasFixedAncestor ) {
                this.offset.parent = this._getParentOffset();
        }

        //Compute the helpers position
        this.position = this._generatePosition( event, true );
        this.positionAbs = this._convertPositionTo("absolute");

        //Call plugins and callbacks and use the resulting position if something is returned
        if (!noPropagation) {
                var ui = this._uiHash();
                if (this._trigger("drag", event, ui) === false) {
                        this._mouseUp({});
                        return false;
                }
                this.position = ui.position;
        }

        this.helper[ 0 ].style.left = this.position.left + "px";
        this.helper[ 0 ].style.top = this.position.top + "px";

        if ($.ui.ddmanager) {
                $.ui.ddmanager.drag(this, event);
        }

        return false;
},

_mouseStop: function(event) {

        //If we are using droppables, inform the manager about the drop
        var that = this,
                dropped = false;
        if ($.ui.ddmanager && !this.options.dropBehaviour) {
                dropped = $.ui.ddmanager.drop(this, event);
        }

        //if a drop comes from outside (a sortable)
        if (this.dropped) {
                dropped = this.dropped;
                this.dropped = false;
        }

        if ((this.options.revert === "invalid" && !dropped) || (this.options.revert === "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
                $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
                        if (that._trigger("stop", event) !== false) {
                                that._clear();
                        }
                });
        } else {
                if (this._trigger("stop", event) !== false) {
                        this._clear();
                }
        }

        return false;
},

_mouseUp: function( event ) {
        this._unblockFrames();

        //If the ddmanager is used for droppables, inform the manager that dragging has stopped (see #5003)
        if ( $.ui.ddmanager ) {
                $.ui.ddmanager.dragStop(this, event);
        }

        // Only need to focus if the event occurred on the draggable itself, see #10527
        if ( this.handleElement.is( event.target ) ) {
                // The interaction is over; whether or not the click resulted in a drag, focus the element
                this.element.focus();
        }

        return $.ui.mouse.prototype._mouseUp.call(this, event);
},

cancel: function() {

        if (this.helper.is(".ui-draggable-dragging")) {
                this._mouseUp({});
        } else {
                this._clear();
        }

        return this;

},

_getHandle: function(event) {
        return this.options.handle ?
                !!$( event.target ).closest( this.element.find( this.options.handle ) ).length :
                true;
},

_setHandleClassName: function() {
        this.handleElement = this.options.handle ?
                this.element.find( this.options.handle ) : this.element;
        this.handleElement.addClass( "ui-draggable-handle" );
},

_removeHandleClassName: function() {
        this.handleElement.removeClass( "ui-draggable-handle" );
},

_createHelper: function(event) {

        var o = this.options,
                helperIsFunction = $.isFunction( o.helper ),
                helper = helperIsFunction ?
                        $( o.helper.apply( this.element[ 0 ], [ event ] ) ) :
                        ( o.helper === "clone" ?
                                this.element.clone().removeAttr( "id" ) :
                                this.element );

        if (!helper.parents("body").length) {
                helper.appendTo((o.appendTo === "parent" ? this.element[0].parentNode : o.appendTo));
        }

        // http://bugs.jqueryui.com/ticket/9446
        // a helper function can return the original element
        // which wouldn't have been set to relative in _create
        if ( helperIsFunction && helper[ 0 ] === this.element[ 0 ] ) {
                this._setPositionRelative();
        }

        if (helper[0] !== this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) {
                helper.css("position", "absolute");
        }

        return helper;

},

_setPositionRelative: function() {
        if ( !( /^(?:r|a|f)/ ).test( this.element.css( "position" ) ) ) {
                this.element[ 0 ].style.position = "relative";
        }
},

_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;
        }
},

_isRootNode: function( element ) {
        return ( /(html|body)/i ).test( element.tagName ) || element === this.document[ 0 ];
},

_getParentOffset: function() {

        //Get the offsetParent and cache its position
        var po = this.offsetParent.offset(),
                document = this.document[ 0 ];

        // 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();
        }

        if ( this._isRootNode( this.offsetParent[ 0 ] ) ) {
                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" ) {
                return { top: 0, left: 0 };
        }

        var p = this.element.position(),
                scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );

        return {
                top: p.top - ( parseInt(this.helper.css( "top" ), 10) || 0 ) + ( !scrollIsRootNode ? this.scrollParent.scrollTop() : 0 ),
                left: p.left - ( parseInt(this.helper.css( "left" ), 10) || 0 ) + ( !scrollIsRootNode ? this.scrollParent.scrollLeft() : 0 )
        };

},

_cacheMargins: function() {
        this.margins = {
                left: (parseInt(this.element.css("marginLeft"), 10) || 0),
                top: (parseInt(this.element.css("marginTop"), 10) || 0),
                right: (parseInt(this.element.css("marginRight"), 10) || 0),
                bottom: (parseInt(this.element.css("marginBottom"), 10) || 0)
        };
},

_cacheHelperProportions: function() {
        this.helperProportions = {
                width: this.helper.outerWidth(),
                height: this.helper.outerHeight()
        };
},

_setContainment: function() {

        var isUserScrollable, c, ce,
                o = this.options,
                document = this.document[ 0 ];

        this.relativeContainer = null;

        if ( !o.containment ) {
                this.containment = null;
                return;
        }

        if ( o.containment === "window" ) {
                this.containment = [
                        $( window ).scrollLeft() - this.offset.relative.left - this.offset.parent.left,
                        $( window ).scrollTop() - this.offset.relative.top - this.offset.parent.top,
                        $( window ).scrollLeft() + $( window ).width() - this.helperProportions.width - this.margins.left,
                        $( window ).scrollTop() + ( $( window ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
                ];
                return;
        }

        if ( o.containment === "document") {
                this.containment = [
                        0,
                        0,
                        $( document ).width() - this.helperProportions.width - this.margins.left,
                        ( $( document ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
                ];
                return;
        }

        if ( o.containment.constructor === Array ) {
                this.containment = o.containment;
                return;
        }

        if ( o.containment === "parent" ) {
                o.containment = this.helper[ 0 ].parentNode;
        }

        c = $( o.containment );
        ce = c[ 0 ];

        if ( !ce ) {
                return;
        }

        isUserScrollable = /(scroll|auto)/.test( c.css( "overflow" ) );

        this.containment = [
                ( parseInt( c.css( "borderLeftWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingLeft" ), 10 ) || 0 ),
                ( parseInt( c.css( "borderTopWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingTop" ), 10 ) || 0 ),
                ( isUserScrollable ? Math.max( ce.scrollWidth, ce.offsetWidth ) : ce.offsetWidth ) -
                        ( parseInt( c.css( "borderRightWidth" ), 10 ) || 0 ) -
                        ( parseInt( c.css( "paddingRight" ), 10 ) || 0 ) -
                        this.helperProportions.width -
                        this.margins.left -
                        this.margins.right,
                ( isUserScrollable ? Math.max( ce.scrollHeight, ce.offsetHeight ) : ce.offsetHeight ) -
                        ( parseInt( c.css( "borderBottomWidth" ), 10 ) || 0 ) -
                        ( parseInt( c.css( "paddingBottom" ), 10 ) || 0 ) -
                        this.helperProportions.height -
                        this.margins.top -
                        this.margins.bottom
        ];
        this.relativeContainer = c;
},

_convertPositionTo: function(d, pos) {

        if (!pos) {
                pos = this.position;
        }

        var mod = d === "absolute" ? 1 : -1,
                scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );

        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.offset.scroll.top : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) ) * 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.offset.scroll.left : ( scrollIsRootNode ? 0 : this.offset.scroll.left ) ) * mod)
                )
        };

},

_generatePosition: function( event, constrainPosition ) {

        var containment, co, top, left,
                o = this.options,
                scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] ),
                pageX = event.pageX,
                pageY = event.pageY;

        // Cache the scroll
        if ( !scrollIsRootNode || !this.offset.scroll ) {
                this.offset.scroll = {
                        top: this.scrollParent.scrollTop(),
                        left: this.scrollParent.scrollLeft()
                };
        }

        /*
         * - Position constraining -
         * Constrain the position to a mix of grid, containment.
         */

        // If we are not dragging yet, we won't check for options
        if ( constrainPosition ) {
                if ( this.containment ) {
                        if ( this.relativeContainer ){
                                co = this.relativeContainer.offset();
                                containment = [
                                        this.containment[ 0 ] + co.left,
                                        this.containment[ 1 ] + co.top,
                                        this.containment[ 2 ] + co.left,
                                        this.containment[ 3 ] + co.top
                                ];
                        } else {
                                containment = this.containment;
                        }

                        if (event.pageX - this.offset.click.left < containment[0]) {
                                pageX = containment[0] + this.offset.click.left;
                        }
                        if (event.pageY - this.offset.click.top < containment[1]) {
                                pageY = containment[1] + this.offset.click.top;
                        }
                        if (event.pageX - this.offset.click.left > containment[2]) {
                                pageX = containment[2] + this.offset.click.left;
                        }
                        if (event.pageY - this.offset.click.top > containment[3]) {
                                pageY = containment[3] + this.offset.click.top;
                        }
                }

                if (o.grid) {
                        //Check for grid elements set to 0 to prevent divide by 0 error causing invalid argument errors in IE (see ticket #6950)
                        top = o.grid[1] ? this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1] : this.originalPageY;
                        pageY = containment ? ((top - this.offset.click.top >= containment[1] || top - this.offset.click.top > containment[3]) ? top : ((top - this.offset.click.top >= containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;

                        left = o.grid[0] ? this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0] : this.originalPageX;
                        pageX = containment ? ((left - this.offset.click.left >= containment[0] || left - this.offset.click.left > containment[2]) ? left : ((left - this.offset.click.left >= containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
                }

                if ( o.axis === "y" ) {
                        pageX = this.originalPageX;
                }

                if ( o.axis === "x" ) {
                        pageY = this.originalPageY;
                }
        }

        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.offset.scroll.top : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) )
                ),
                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.offset.scroll.left : ( scrollIsRootNode ? 0 : this.offset.scroll.left ) )
                )
        };

},

_clear: function() {
        this.helper.removeClass("ui-draggable-dragging");
        if (this.helper[0] !== this.element[0] && !this.cancelHelperRemoval) {
                this.helper.remove();
        }
        this.helper = null;
        this.cancelHelperRemoval = false;
        if ( this.destroyOnClear ) {
                this.destroy();
        }
},

_normalizeRightBottom: function() {
        if ( this.options.axis !== "y" && this.helper.css( "right" ) !== "auto" ) {
                this.helper.width( this.helper.width() );
                this.helper.css( "right", "auto" );
        }
        if ( this.options.axis !== "x" && this.helper.css( "bottom" ) !== "auto" ) {
                this.helper.height( this.helper.height() );
                this.helper.css( "bottom", "auto" );
        }
},

// From now on bulk stuff - mainly helpers

_trigger: function( type, event, ui ) {
        ui = ui || this._uiHash();
        $.ui.plugin.call( this, type, [ event, ui, this ], true );

        // Absolute position and offset (see #6884 ) have to be recalculated after plugins
        if ( /^(drag|start|stop)/.test( type ) ) {
                this.positionAbs = this._convertPositionTo( "absolute" );
                ui.offset = this.positionAbs;
        }
        return $.Widget.prototype._trigger.call( this, type, event, ui );
},

plugins: {},

_uiHash: function() {
        return {
                helper: this.helper,
                position: this.position,
                originalPosition: this.originalPosition,
                offset: this.positionAbs
        };
}

});

$.ui.plugin.add( “draggable”, “connectToSortable”, {

start: function( event, ui, draggable ) {
        var uiSortable = $.extend( {}, ui, {
                item: draggable.element
        });

        draggable.sortables = [];
        $( draggable.options.connectToSortable ).each(function() {
                var sortable = $( this ).sortable( "instance" );

                if ( sortable && !sortable.options.disabled ) {
                        draggable.sortables.push( sortable );

                        // refreshPositions is called at drag start to refresh the containerCache
                        // which is used in drag. This ensures it's initialized and synchronized
                        // with any changes that might have happened on the page since initialization.
                        sortable.refreshPositions();
                        sortable._trigger("activate", event, uiSortable);
                }
        });
},
stop: function( event, ui, draggable ) {
        var uiSortable = $.extend( {}, ui, {
                item: draggable.element
        });

        draggable.cancelHelperRemoval = false;

        $.each( draggable.sortables, function() {
                var sortable = this;

                if ( sortable.isOver ) {
                        sortable.isOver = 0;

                        // Allow this sortable to handle removing the helper
                        draggable.cancelHelperRemoval = true;
                        sortable.cancelHelperRemoval = false;

                        // Use _storedCSS To restore properties in the sortable,
                        // as this also handles revert (#9675) since the draggable
                        // may have modified them in unexpected ways (#8809)
                        sortable._storedCSS = {
                                position: sortable.placeholder.css( "position" ),
                                top: sortable.placeholder.css( "top" ),
                                left: sortable.placeholder.css( "left" )
                        };

                        sortable._mouseStop(event);

                        // Once drag has ended, the sortable should return to using
                        // its original helper, not the shared helper from draggable
                        sortable.options.helper = sortable.options._helper;
                } else {
                        // Prevent this Sortable from removing the helper.
                        // However, don't set the draggable to remove the helper
                        // either as another connected Sortable may yet handle the removal.
                        sortable.cancelHelperRemoval = true;

                        sortable._trigger( "deactivate", event, uiSortable );
                }
        });
},
drag: function( event, ui, draggable ) {
        $.each( draggable.sortables, function() {
                var innermostIntersecting = false,
                        sortable = this;

                // Copy over variables that sortable's _intersectsWith uses
                sortable.positionAbs = draggable.positionAbs;
                sortable.helperProportions = draggable.helperProportions;
                sortable.offset.click = draggable.offset.click;

                if ( sortable._intersectsWith( sortable.containerCache ) ) {
                        innermostIntersecting = true;

                        $.each( draggable.sortables, function() {
                                // Copy over variables that sortable's _intersectsWith uses
                                this.positionAbs = draggable.positionAbs;
                                this.helperProportions = draggable.helperProportions;
                                this.offset.click = draggable.offset.click;

                                if ( this !== sortable &&
                                                this._intersectsWith( this.containerCache ) &&
                                                $.contains( sortable.element[ 0 ], this.element[ 0 ] ) ) {
                                        innermostIntersecting = false;
                                }

                                return innermostIntersecting;
                        });
                }

                if ( innermostIntersecting ) {
                        // If it intersects, we use a little isOver variable and set it once,
                        // so that the move-in stuff gets fired only once.
                        if ( !sortable.isOver ) {
                                sortable.isOver = 1;

                                // Store draggable's parent in case we need to reappend to it later.
                                draggable._parent = ui.helper.parent();

                                sortable.currentItem = ui.helper
                                        .appendTo( sortable.element )
                                        .data( "ui-sortable-item", true );

                                // Store helper option to later restore it
                                sortable.options._helper = sortable.options.helper;

                                sortable.options.helper = function() {
                                        return ui.helper[ 0 ];
                                };

                                // Fire the start events of the sortable with our passed browser event,
                                // and our own helper (so it doesn't create a new one)
                                event.target = sortable.currentItem[ 0 ];
                                sortable._mouseCapture( event, true );
                                sortable._mouseStart( event, true, true );

                                // Because the browser event is way off the new appended portlet,
                                // modify necessary variables to reflect the changes
                                sortable.offset.click.top = draggable.offset.click.top;
                                sortable.offset.click.left = draggable.offset.click.left;
                                sortable.offset.parent.left -= draggable.offset.parent.left -
                                        sortable.offset.parent.left;
                                sortable.offset.parent.top -= draggable.offset.parent.top -
                                        sortable.offset.parent.top;

                                draggable._trigger( "toSortable", event );

                                // Inform draggable that the helper is in a valid drop zone,
                                // used solely in the revert option to handle "valid/invalid".
                                draggable.dropped = sortable.element;

                                // Need to refreshPositions of all sortables in the case that
                                // adding to one sortable changes the location of the other sortables (#9675)
                                $.each( draggable.sortables, function() {
                                        this.refreshPositions();
                                });

                                // hack so receive/update callbacks work (mostly)
                                draggable.currentItem = draggable.element;
                                sortable.fromOutside = draggable;
                        }

                        if ( sortable.currentItem ) {
                                sortable._mouseDrag( event );
                                // Copy the sortable's position because the draggable's can potentially reflect
                                // a relative position, while sortable is always absolute, which the dragged
                                // element has now become. (#8809)
                                ui.position = sortable.position;
                        }
                } else {
                        // If it doesn't intersect with the sortable, and it intersected before,
                        // we fake the drag stop of the sortable, but make sure it doesn't remove
                        // the helper by using cancelHelperRemoval.
                        if ( sortable.isOver ) {

                                sortable.isOver = 0;
                                sortable.cancelHelperRemoval = true;

                                // Calling sortable's mouseStop would trigger a revert,
                                // so revert must be temporarily false until after mouseStop is called.
                                sortable.options._revert = sortable.options.revert;
                                sortable.options.revert = false;

                                sortable._trigger( "out", event, sortable._uiHash( sortable ) );
                                sortable._mouseStop( event, true );

                                // restore sortable behaviors that were modfied
                                // when the draggable entered the sortable area (#9481)
                                sortable.options.revert = sortable.options._revert;
                                sortable.options.helper = sortable.options._helper;

                                if ( sortable.placeholder ) {
                                        sortable.placeholder.remove();
                                }

                                // Restore and recalculate the draggable's offset considering the sortable
                                // may have modified them in unexpected ways. (#8809, #10669)
                                ui.helper.appendTo( draggable._parent );
                                draggable._refreshOffsets( event );
                                ui.position = draggable._generatePosition( event, true );

                                draggable._trigger( "fromSortable", event );

                                // Inform draggable that the helper is no longer in a valid drop zone
                                draggable.dropped = false;

                                // Need to refreshPositions of all sortables just in case removing
                                // from one sortable changes the location of other sortables (#9675)
                                $.each( draggable.sortables, function() {
                                        this.refreshPositions();
                                });
                        }
                }
        });
}

});

$.ui.plugin.add(“draggable”, “cursor”, {

start: function( event, ui, instance ) {
        var t = $( "body" ),
                o = instance.options;

        if (t.css("cursor")) {
                o._cursor = t.css("cursor");
        }
        t.css("cursor", o.cursor);
},
stop: function( event, ui, instance ) {
        var o = instance.options;
        if (o._cursor) {
                $("body").css("cursor", o._cursor);
        }
}

});

$.ui.plugin.add(“draggable”, “opacity”, {

start: function( event, ui, instance ) {
        var t = $( ui.helper ),
                o = instance.options;
        if (t.css("opacity")) {
                o._opacity = t.css("opacity");
        }
        t.css("opacity", o.opacity);
},
stop: function( event, ui, instance ) {
        var o = instance.options;
        if (o._opacity) {
                $(ui.helper).css("opacity", o._opacity);
        }
}

});

$.ui.plugin.add(“draggable”, “scroll”, {

start: function( event, ui, i ) {
        if ( !i.scrollParentNotHidden ) {
                i.scrollParentNotHidden = i.helper.scrollParent( false );
        }

        if ( i.scrollParentNotHidden[ 0 ] !== i.document[ 0 ] && i.scrollParentNotHidden[ 0 ].tagName !== "HTML" ) {
                i.overflowOffset = i.scrollParentNotHidden.offset();
        }
},
drag: function( event, ui, i  ) {

        var o = i.options,
                scrolled = false,
                scrollParent = i.scrollParentNotHidden[ 0 ],
                document = i.document[ 0 ];

        if ( scrollParent !== document && scrollParent.tagName !== "HTML" ) {
                if ( !o.axis || o.axis !== "x" ) {
                        if ( ( i.overflowOffset.top + scrollParent.offsetHeight ) - event.pageY < o.scrollSensitivity ) {
                                scrollParent.scrollTop = scrolled = scrollParent.scrollTop + o.scrollSpeed;
                        } else if ( event.pageY - i.overflowOffset.top < o.scrollSensitivity ) {
                                scrollParent.scrollTop = scrolled = scrollParent.scrollTop - o.scrollSpeed;
                        }
                }

                if ( !o.axis || o.axis !== "y" ) {
                        if ( ( i.overflowOffset.left + scrollParent.offsetWidth ) - event.pageX < o.scrollSensitivity ) {
                                scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft + o.scrollSpeed;
                        } else if ( event.pageX - i.overflowOffset.left < o.scrollSensitivity ) {
                                scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft - o.scrollSpeed;
                        }
                }

        } else {

                if (!o.axis || o.axis !== "x") {
                        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 (!o.axis || o.axis !== "y") {
                        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(i, event);
        }

}

});

$.ui.plugin.add(“draggable”, “snap”, {

start: function( event, ui, i ) {

        var o = i.options;

        i.snapElements = [];

        $(o.snap.constructor !== String ? ( o.snap.items || ":data(ui-draggable)" ) : o.snap).each(function() {
                var $t = $(this),
                        $o = $t.offset();
                if (this !== i.element[0]) {
                        i.snapElements.push({
                                item: this,
                                width: $t.outerWidth(), height: $t.outerHeight(),
                                top: $o.top, left: $o.left
                        });
                }
        });

},
drag: function( event, ui, inst ) {

        var ts, bs, ls, rs, l, r, t, b, i, first,
                o = inst.options,
                d = o.snapTolerance,
                x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
                y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;

        for (i = inst.snapElements.length - 1; i >= 0; i--){

                l = inst.snapElements[i].left - inst.margins.left;
                r = l + inst.snapElements[i].width;
                t = inst.snapElements[i].top - inst.margins.top;
                b = t + inst.snapElements[i].height;

                if ( x2 < l - d || x1 > r + d || y2 < t - d || y1 > b + d || !$.contains( inst.snapElements[ i ].item.ownerDocument, inst.snapElements[ i ].item ) ) {
                        if (inst.snapElements[i].snapping) {
                                (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
                        }
                        inst.snapElements[i].snapping = false;
                        continue;
                }

                if (o.snapMode !== "inner") {
                        ts = Math.abs(t - y2) <= d;
                        bs = Math.abs(b - y1) <= d;
                        ls = Math.abs(l - x2) <= d;
                        rs = Math.abs(r - x1) <= d;
                        if (ts) {
                                ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top;
                        }
                        if (bs) {
                                ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top;
                        }
                        if (ls) {
                                ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left;
                        }
                        if (rs) {
                                ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left;
                        }
                }

                first = (ts || bs || ls || rs);

                if (o.snapMode !== "outer") {
                        ts = Math.abs(t - y1) <= d;
                        bs = Math.abs(b - y2) <= d;
                        ls = Math.abs(l - x1) <= d;
                        rs = Math.abs(r - x2) <= d;
                        if (ts) {
                                ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top;
                        }
                        if (bs) {
                                ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top;
                        }
                        if (ls) {
                                ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left;
                        }
                        if (rs) {
                                ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left;
                        }
                }

                if (!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) {
                        (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
                }
                inst.snapElements[i].snapping = (ts || bs || ls || rs || first);

        }

}

});

$.ui.plugin.add(“draggable”, “stack”, {

start: function( event, ui, instance ) {
        var min,
                o = instance.options,
                group = $.makeArray($(o.stack)).sort(function(a, b) {
                        return (parseInt($(a).css("zIndex"), 10) || 0) - (parseInt($(b).css("zIndex"), 10) || 0);
                });

        if (!group.length) { return; }

        min = parseInt($(group[0]).css("zIndex"), 10) || 0;
        $(group).each(function(i) {
                $(this).css("zIndex", min + i);
        });
        this.css("zIndex", (min + group.length));
}

});

$.ui.plugin.add(“draggable”, “zIndex”, {

start: function( event, ui, instance ) {
        var t = $( ui.helper ),
                o = instance.options;

        if (t.css("zIndex")) {
                o._zIndex = t.css("zIndex");
        }
        t.css("zIndex", o.zIndex);
},
stop: function( event, ui, instance ) {
        var o = instance.options;

        if (o._zIndex) {
                $(ui.helper).css("zIndex", o._zIndex);
        }
}

});

return $.ui.draggable;

}));