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/*!
 * jQuery UI Dialog 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Dialog
//>>group: Widgets
//>>description: Displays customizable dialog windows.
//>>docs: http://api.jqueryui.com/dialog/
//>>demos: http://jqueryui.com/dialog/
//>>css.structure: ../../themes/base/core.css
//>>css.structure: ../../themes/base/dialog.css
//>>css.theme: ../../themes/base/theme.css

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

                // AMD. Register as an anonymous module.
                define( [
                        "jquery",
                        "./button",
                        "./draggable",
                        "./mouse",
                        "./resizable",
                        "../focusable",
                        "../keycode",
                        "../position",
                        "../safe-active-element",
                        "../safe-blur",
                        "../tabbable",
                        "../unique-id",
                        "../version",
                        "../widget"
                ], factory );
        } else {

                // Browser globals
                factory( jQuery );
        }
}( function( $ ) {

$.widget( "ui.dialog", {
        version: "1.12.1",
        options: {
                appendTo: "body",
                autoOpen: true,
                buttons: [],
                classes: {
                        "ui-dialog": "ui-corner-all",
                        "ui-dialog-titlebar": "ui-corner-all"
                },
                closeOnEscape: true,
                closeText: "Close",
                draggable: true,
                hide: null,
                height: "auto",
                maxHeight: null,
                maxWidth: null,
                minHeight: 150,
                minWidth: 150,
                modal: false,
                position: {
                        my: "center",
                        at: "center",
                        of: window,
                        collision: "fit",

                        // Ensure the titlebar is always visible
                        using: function( pos ) {
                                var topOffset = $( this ).css( pos ).offset().top;
                                if ( topOffset < 0 ) {
                                        $( this ).css( "top", pos.top - topOffset );
                                }
                        }
                },
                resizable: true,
                show: null,
                title: null,
                width: 300,

                // Callbacks
                beforeClose: null,
                close: null,
                drag: null,
                dragStart: null,
                dragStop: null,
                focus: null,
                open: null,
                resize: null,
                resizeStart: null,
                resizeStop: null
        },

        sizeRelatedOptions: {
                buttons: true,
                height: true,
                maxHeight: true,
                maxWidth: true,
                minHeight: true,
                minWidth: true,
                width: true
        },

        resizableRelatedOptions: {
                maxHeight: true,
                maxWidth: true,
                minHeight: true,
                minWidth: true
        },

        _create: function() {
                this.originalCss = {
                        display: this.element[ 0 ].style.display,
                        width: this.element[ 0 ].style.width,
                        minHeight: this.element[ 0 ].style.minHeight,
                        maxHeight: this.element[ 0 ].style.maxHeight,
                        height: this.element[ 0 ].style.height
                };
                this.originalPosition = {
                        parent: this.element.parent(),
                        index: this.element.parent().children().index( this.element )
                };
                this.originalTitle = this.element.attr( "title" );
                if ( this.options.title == null && this.originalTitle != null ) {
                        this.options.title = this.originalTitle;
                }

                // Dialogs can't be disabled
                if ( this.options.disabled ) {
                        this.options.disabled = false;
                }

                this._createWrapper();

                this.element
                        .show()
                        .removeAttr( "title" )
                        .appendTo( this.uiDialog );

                this._addClass( "ui-dialog-content", "ui-widget-content" );

                this._createTitlebar();
                this._createButtonPane();

                if ( this.options.draggable && $.fn.draggable ) {
                        this._makeDraggable();
                }
                if ( this.options.resizable && $.fn.resizable ) {
                        this._makeResizable();
                }

                this._isOpen = false;

                this._trackFocus();
        },

        _init: function() {
                if ( this.options.autoOpen ) {
                        this.open();
                }
        },

        _appendTo: function() {
                var element = this.options.appendTo;
                if ( element && ( element.jquery || element.nodeType ) ) {
                        return $( element );
                }
                return this.document.find( element || "body" ).eq( 0 );
        },

        _destroy: function() {
                var next,
                        originalPosition = this.originalPosition;

                this._untrackInstance();
                this._destroyOverlay();

                this.element
                        .removeUniqueId()
                        .css( this.originalCss )

                        // Without detaching first, the following becomes really slow
                        .detach();

                this.uiDialog.remove();

                if ( this.originalTitle ) {
                        this.element.attr( "title", this.originalTitle );
                }

                next = originalPosition.parent.children().eq( originalPosition.index );

                // Don't try to place the dialog next to itself (#8613)
                if ( next.length && next[ 0 ] !== this.element[ 0 ] ) {
                        next.before( this.element );
                } else {
                        originalPosition.parent.append( this.element );
                }
        },

        widget: function() {
                return this.uiDialog;
        },

        disable: $.noop,
        enable: $.noop,

        close: function( event ) {
                var that = this;

                if ( !this._isOpen || this._trigger( "beforeClose", event ) === false ) {
                        return;
                }

                this._isOpen = false;
                this._focusedElement = null;
                this._destroyOverlay();
                this._untrackInstance();

                if ( !this.opener.filter( ":focusable" ).trigger( "focus" ).length ) {

                        // Hiding a focused element doesn't trigger blur in WebKit
                        // so in case we have nothing to focus on, explicitly blur the active element
                        // https://bugs.webkit.org/show_bug.cgi?id=47182
                        $.ui.safeBlur( $.ui.safeActiveElement( this.document[ 0 ] ) );
                }

                this._hide( this.uiDialog, this.options.hide, function() {
                        that._trigger( "close", event );
                } );
        },

        isOpen: function() {
                return this._isOpen;
        },

        moveToTop: function() {
                this._moveToTop();
        },

        _moveToTop: function( event, silent ) {
                var moved = false,
                        zIndices = this.uiDialog.siblings( ".ui-front:visible" ).map( function() {
                                return +$( this ).css( "z-index" );
                        } ).get(),
                        zIndexMax = Math.max.apply( null, zIndices );

                if ( zIndexMax >= +this.uiDialog.css( "z-index" ) ) {
                        this.uiDialog.css( "z-index", zIndexMax + 1 );
                        moved = true;
                }

                if ( moved && !silent ) {
                        this._trigger( "focus", event );
                }
                return moved;
        },

        open: function() {
                var that = this;
                if ( this._isOpen ) {
                        if ( this._moveToTop() ) {
                                this._focusTabbable();
                        }
                        return;
                }

                this._isOpen = true;
                this.opener = $( $.ui.safeActiveElement( this.document[ 0 ] ) );

                this._size();
                this._position();
                this._createOverlay();
                this._moveToTop( null, true );

                // Ensure the overlay is moved to the top with the dialog, but only when
                // opening. The overlay shouldn't move after the dialog is open so that
                // modeless dialogs opened after the modal dialog stack properly.
                if ( this.overlay ) {
                        this.overlay.css( "z-index", this.uiDialog.css( "z-index" ) - 1 );
                }

                this._show( this.uiDialog, this.options.show, function() {
                        that._focusTabbable();
                        that._trigger( "focus" );
                } );

                // Track the dialog immediately upon openening in case a focus event
                // somehow occurs outside of the dialog before an element inside the
                // dialog is focused (#10152)
                this._makeFocusTarget();

                this._trigger( "open" );
        },

        _focusTabbable: function() {

                // Set focus to the first match:
                // 1. An element that was focused previously
                // 2. First element inside the dialog matching [autofocus]
                // 3. Tabbable element inside the content element
                // 4. Tabbable element inside the buttonpane
                // 5. The close button
                // 6. The dialog itself
                var hasFocus = this._focusedElement;
                if ( !hasFocus ) {
                        hasFocus = this.element.find( "[autofocus]" );
                }
                if ( !hasFocus.length ) {
                        hasFocus = this.element.find( ":tabbable" );
                }
                if ( !hasFocus.length ) {
                        hasFocus = this.uiDialogButtonPane.find( ":tabbable" );
                }
                if ( !hasFocus.length ) {
                        hasFocus = this.uiDialogTitlebarClose.filter( ":tabbable" );
                }
                if ( !hasFocus.length ) {
                        hasFocus = this.uiDialog;
                }
                hasFocus.eq( 0 ).trigger( "focus" );
        },

        _keepFocus: function( event ) {
                function checkFocus() {
                        var activeElement = $.ui.safeActiveElement( this.document[ 0 ] ),
                                isActive = this.uiDialog[ 0 ] === activeElement ||
                                        $.contains( this.uiDialog[ 0 ], activeElement );
                        if ( !isActive ) {
                                this._focusTabbable();
                        }
                }
                event.preventDefault();
                checkFocus.call( this );

                // support: IE
                // IE <= 8 doesn't prevent moving focus even with event.preventDefault()
                // so we check again later
                this._delay( checkFocus );
        },

        _createWrapper: function() {
                this.uiDialog = $( "<div>" )
                        .hide()
                        .attr( {

                                // Setting tabIndex makes the div focusable
                                tabIndex: -1,
                                role: "dialog"
                        } )
                        .appendTo( this._appendTo() );

                this._addClass( this.uiDialog, "ui-dialog", "ui-widget ui-widget-content ui-front" );
                this._on( this.uiDialog, {
                        keydown: function( event ) {
                                if ( this.options.closeOnEscape && !event.isDefaultPrevented() && event.keyCode &&
                                                event.keyCode === $.ui.keyCode.ESCAPE ) {
                                        event.preventDefault();
                                        this.close( event );
                                        return;
                                }

                                // Prevent tabbing out of dialogs
                                if ( event.keyCode !== $.ui.keyCode.TAB || event.isDefaultPrevented() ) {
                                        return;
                                }
                                var tabbables = this.uiDialog.find( ":tabbable" ),
                                        first = tabbables.filter( ":first" ),
                                        last = tabbables.filter( ":last" );

                                if ( ( event.target === last[ 0 ] || event.target === this.uiDialog[ 0 ] ) &&
                                                !event.shiftKey ) {
                                        this._delay( function() {
                                                first.trigger( "focus" );
                                        } );
                                        event.preventDefault();
                                } else if ( ( event.target === first[ 0 ] ||
                                                event.target === this.uiDialog[ 0 ] ) && event.shiftKey ) {
                                        this._delay( function() {
                                                last.trigger( "focus" );
                                        } );
                                        event.preventDefault();
                                }
                        },
                        mousedown: function( event ) {
                                if ( this._moveToTop( event ) ) {
                                        this._focusTabbable();
                                }
                        }
                } );

                // We assume that any existing aria-describedby attribute means
                // that the dialog content is marked up properly
                // otherwise we brute force the content as the description
                if ( !this.element.find( "[aria-describedby]" ).length ) {
                        this.uiDialog.attr( {
                                "aria-describedby": this.element.uniqueId().attr( "id" )
                        } );
                }
        },

        _createTitlebar: function() {
                var uiDialogTitle;

                this.uiDialogTitlebar = $( "<div>" );
                this._addClass( this.uiDialogTitlebar,
                        "ui-dialog-titlebar", "ui-widget-header ui-helper-clearfix" );
                this._on( this.uiDialogTitlebar, {
                        mousedown: function( event ) {

                                // Don't prevent click on close button (#8838)
                                // Focusing a dialog that is partially scrolled out of view
                                // causes the browser to scroll it into view, preventing the click event
                                if ( !$( event.target ).closest( ".ui-dialog-titlebar-close" ) ) {

                                        // Dialog isn't getting focus when dragging (#8063)
                                        this.uiDialog.trigger( "focus" );
                                }
                        }
                } );

                // Support: IE
                // Use type="button" to prevent enter keypresses in textboxes from closing the
                // dialog in IE (#9312)
                this.uiDialogTitlebarClose = $( "<button type='button'></button>" )
                        .button( {
                                label: $( "<a>" ).text( this.options.closeText ).html(),
                                icon: "ui-icon-closethick",
                                showLabel: false
                        } )
                        .appendTo( this.uiDialogTitlebar );

                this._addClass( this.uiDialogTitlebarClose, "ui-dialog-titlebar-close" );
                this._on( this.uiDialogTitlebarClose, {
                        click: function( event ) {
                                event.preventDefault();
                                this.close( event );
                        }
                } );

                uiDialogTitle = $( "<span>" ).uniqueId().prependTo( this.uiDialogTitlebar );
                this._addClass( uiDialogTitle, "ui-dialog-title" );
                this._title( uiDialogTitle );

                this.uiDialogTitlebar.prependTo( this.uiDialog );

                this.uiDialog.attr( {
                        "aria-labelledby": uiDialogTitle.attr( "id" )
                } );
        },

        _title: function( title ) {
                if ( this.options.title ) {
                        title.text( this.options.title );
                } else {
                        title.html( "&#160;" );
                }
        },

        _createButtonPane: function() {
                this.uiDialogButtonPane = $( "<div>" );
                this._addClass( this.uiDialogButtonPane, "ui-dialog-buttonpane",
                        "ui-widget-content ui-helper-clearfix" );

                this.uiButtonSet = $( "<div>" )
                        .appendTo( this.uiDialogButtonPane );
                this._addClass( this.uiButtonSet, "ui-dialog-buttonset" );

                this._createButtons();
        },

        _createButtons: function() {
                var that = this,
                        buttons = this.options.buttons;

                // If we already have a button pane, remove it
                this.uiDialogButtonPane.remove();
                this.uiButtonSet.empty();

                if ( $.isEmptyObject( buttons ) || ( $.isArray( buttons ) && !buttons.length ) ) {
                        this._removeClass( this.uiDialog, "ui-dialog-buttons" );
                        return;
                }

                $.each( buttons, function( name, props ) {
                        var click, buttonOptions;
                        props = $.isFunction( props ) ?
                                { click: props, text: name } :
                                props;

                        // Default to a non-submitting button
                        props = $.extend( { type: "button" }, props );

                        // Change the context for the click callback to be the main element
                        click = props.click;
                        buttonOptions = {
                                icon: props.icon,
                                iconPosition: props.iconPosition,
                                showLabel: props.showLabel,

                                // Deprecated options
                                icons: props.icons,
                                text: props.text
                        };

                        delete props.click;
                        delete props.icon;
                        delete props.iconPosition;
                        delete props.showLabel;

                        // Deprecated options
                        delete props.icons;
                        if ( typeof props.text === "boolean" ) {
                                delete props.text;
                        }

                        $( "<button></button>", props )
                                .button( buttonOptions )
                                .appendTo( that.uiButtonSet )
                                .on( "click", function() {
                                        click.apply( that.element[ 0 ], arguments );
                                } );
                } );
                this._addClass( this.uiDialog, "ui-dialog-buttons" );
                this.uiDialogButtonPane.appendTo( this.uiDialog );
        },

        _makeDraggable: function() {
                var that = this,
                        options = this.options;

                function filteredUi( ui ) {
                        return {
                                position: ui.position,
                                offset: ui.offset
                        };
                }

                this.uiDialog.draggable( {
                        cancel: ".ui-dialog-content, .ui-dialog-titlebar-close",
                        handle: ".ui-dialog-titlebar",
                        containment: "document",
                        start: function( event, ui ) {
                                that._addClass( $( this ), "ui-dialog-dragging" );
                                that._blockFrames();
                                that._trigger( "dragStart", event, filteredUi( ui ) );
                        },
                        drag: function( event, ui ) {
                                that._trigger( "drag", event, filteredUi( ui ) );
                        },
                        stop: function( event, ui ) {
                                var left = ui.offset.left - that.document.scrollLeft(),
                                        top = ui.offset.top - that.document.scrollTop();

                                options.position = {
                                        my: "left top",
                                        at: "left" + ( left >= 0 ? "+" : "" ) + left + " " +
                                                "top" + ( top >= 0 ? "+" : "" ) + top,
                                        of: that.window
                                };
                                that._removeClass( $( this ), "ui-dialog-dragging" );
                                that._unblockFrames();
                                that._trigger( "dragStop", event, filteredUi( ui ) );
                        }
                } );
        },

        _makeResizable: function() {
                var that = this,
                        options = this.options,
                        handles = options.resizable,

                        // .ui-resizable has position: relative defined in the stylesheet
                        // but dialogs have to use absolute or fixed positioning
                        position = this.uiDialog.css( "position" ),
                        resizeHandles = typeof handles === "string" ?
                                handles :
                                "n,e,s,w,se,sw,ne,nw";

                function filteredUi( ui ) {
                        return {
                                originalPosition: ui.originalPosition,
                                originalSize: ui.originalSize,
                                position: ui.position,
                                size: ui.size
                        };
                }

                this.uiDialog.resizable( {
                        cancel: ".ui-dialog-content",
                        containment: "document",
                        alsoResize: this.element,
                        maxWidth: options.maxWidth,
                        maxHeight: options.maxHeight,
                        minWidth: options.minWidth,
                        minHeight: this._minHeight(),
                        handles: resizeHandles,
                        start: function( event, ui ) {
                                that._addClass( $( this ), "ui-dialog-resizing" );
                                that._blockFrames();
                                that._trigger( "resizeStart", event, filteredUi( ui ) );
                        },
                        resize: function( event, ui ) {
                                that._trigger( "resize", event, filteredUi( ui ) );
                        },
                        stop: function( event, ui ) {
                                var offset = that.uiDialog.offset(),
                                        left = offset.left - that.document.scrollLeft(),
                                        top = offset.top - that.document.scrollTop();

                                options.height = that.uiDialog.height();
                                options.width = that.uiDialog.width();
                                options.position = {
                                        my: "left top",
                                        at: "left" + ( left >= 0 ? "+" : "" ) + left + " " +
                                                "top" + ( top >= 0 ? "+" : "" ) + top,
                                        of: that.window
                                };
                                that._removeClass( $( this ), "ui-dialog-resizing" );
                                that._unblockFrames();
                                that._trigger( "resizeStop", event, filteredUi( ui ) );
                        }
                } )
                        .css( "position", position );
        },

        _trackFocus: function() {
                this._on( this.widget(), {
                        focusin: function( event ) {
                                this._makeFocusTarget();
                                this._focusedElement = $( event.target );
                        }
                } );
        },

        _makeFocusTarget: function() {
                this._untrackInstance();
                this._trackingInstances().unshift( this );
        },

        _untrackInstance: function() {
                var instances = this._trackingInstances(),
                        exists = $.inArray( this, instances );
                if ( exists !== -1 ) {
                        instances.splice( exists, 1 );
                }
        },

        _trackingInstances: function() {
                var instances = this.document.data( "ui-dialog-instances" );
                if ( !instances ) {
                        instances = [];
                        this.document.data( "ui-dialog-instances", instances );
                }
                return instances;
        },

        _minHeight: function() {
                var options = this.options;

                return options.height === "auto" ?
                        options.minHeight :
                        Math.min( options.minHeight, options.height );
        },

        _position: function() {

                // Need to show the dialog to get the actual offset in the position plugin
                var isVisible = this.uiDialog.is( ":visible" );
                if ( !isVisible ) {
                        this.uiDialog.show();
                }
                this.uiDialog.position( this.options.position );
                if ( !isVisible ) {
                        this.uiDialog.hide();
                }
        },

        _setOptions: function( options ) {
                var that = this,
                        resize = false,
                        resizableOptions = {};

                $.each( options, function( key, value ) {
                        that._setOption( key, value );

                        if ( key in that.sizeRelatedOptions ) {
                                resize = true;
                        }
                        if ( key in that.resizableRelatedOptions ) {
                                resizableOptions[ key ] = value;
                        }
                } );

                if ( resize ) {
                        this._size();
                        this._position();
                }
                if ( this.uiDialog.is( ":data(ui-resizable)" ) ) {
                        this.uiDialog.resizable( "option", resizableOptions );
                }
        },

        _setOption: function( key, value ) {
                var isDraggable, isResizable,
                        uiDialog = this.uiDialog;

                if ( key === "disabled" ) {
                        return;
                }

                this._super( key, value );

                if ( key === "appendTo" ) {
                        this.uiDialog.appendTo( this._appendTo() );
                }

                if ( key === "buttons" ) {
                        this._createButtons();
                }

                if ( key === "closeText" ) {
                        this.uiDialogTitlebarClose.button( {

                                // Ensure that we always pass a string
                                label: $( "<a>" ).text( "" + this.options.closeText ).html()
                        } );
                }

                if ( key === "draggable" ) {
                        isDraggable = uiDialog.is( ":data(ui-draggable)" );
                        if ( isDraggable && !value ) {
                                uiDialog.draggable( "destroy" );
                        }

                        if ( !isDraggable && value ) {
                                this._makeDraggable();
                        }
                }

                if ( key === "position" ) {
                        this._position();
                }

                if ( key === "resizable" ) {

                        // currently resizable, becoming non-resizable
                        isResizable = uiDialog.is( ":data(ui-resizable)" );
                        if ( isResizable && !value ) {
                                uiDialog.resizable( "destroy" );
                        }

                        // Currently resizable, changing handles
                        if ( isResizable && typeof value === "string" ) {
                                uiDialog.resizable( "option", "handles", value );
                        }

                        // Currently non-resizable, becoming resizable
                        if ( !isResizable && value !== false ) {
                                this._makeResizable();
                        }
                }

                if ( key === "title" ) {
                        this._title( this.uiDialogTitlebar.find( ".ui-dialog-title" ) );
                }
        },

        _size: function() {

                // If the user has resized the dialog, the .ui-dialog and .ui-dialog-content
                // divs will both have width and height set, so we need to reset them
                var nonContentHeight, minContentHeight, maxContentHeight,
                        options = this.options;

                // Reset content sizing
                this.element.show().css( {
                        width: "auto",
                        minHeight: 0,
                        maxHeight: "none",
                        height: 0
                } );

                if ( options.minWidth > options.width ) {
                        options.width = options.minWidth;
                }

                // Reset wrapper sizing
                // determine the height of all the non-content elements
                nonContentHeight = this.uiDialog.css( {
                        height: "auto",
                        width: options.width
                } )
                        .outerHeight();
                minContentHeight = Math.max( 0, options.minHeight - nonContentHeight );
                maxContentHeight = typeof options.maxHeight === "number" ?
                        Math.max( 0, options.maxHeight - nonContentHeight ) :
                        "none";

                if ( options.height === "auto" ) {
                        this.element.css( {
                                minHeight: minContentHeight,
                                maxHeight: maxContentHeight,
                                height: "auto"
                        } );
                } else {
                        this.element.height( Math.max( 0, options.height - nonContentHeight ) );
                }

                if ( this.uiDialog.is( ":data(ui-resizable)" ) ) {
                        this.uiDialog.resizable( "option", "minHeight", this._minHeight() );
                }
        },

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

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

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

        _allowInteraction: function( event ) {
                if ( $( event.target ).closest( ".ui-dialog" ).length ) {
                        return true;
                }

                // TODO: Remove hack when datepicker implements
                // the .ui-front logic (#8989)
                return !!$( event.target ).closest( ".ui-datepicker" ).length;
        },

        _createOverlay: function() {
                if ( !this.options.modal ) {
                        return;
                }

                // We use a delay in case the overlay is created from an
                // event that we're going to be cancelling (#2804)
                var isOpening = true;
                this._delay( function() {
                        isOpening = false;
                } );

                if ( !this.document.data( "ui-dialog-overlays" ) ) {

                        // Prevent use of anchors and inputs
                        // Using _on() for an event handler shared across many instances is
                        // safe because the dialogs stack and must be closed in reverse order
                        this._on( this.document, {
                                focusin: function( event ) {
                                        if ( isOpening ) {
                                                return;
                                        }

                                        if ( !this._allowInteraction( event ) ) {
                                                event.preventDefault();
                                                this._trackingInstances()[ 0 ]._focusTabbable();
                                        }
                                }
                        } );
                }

                this.overlay = $( "<div>" )
                        .appendTo( this._appendTo() );

                this._addClass( this.overlay, null, "ui-widget-overlay ui-front" );
                this._on( this.overlay, {
                        mousedown: "_keepFocus"
                } );
                this.document.data( "ui-dialog-overlays",
                        ( this.document.data( "ui-dialog-overlays" ) || 0 ) + 1 );
        },

        _destroyOverlay: function() {
                if ( !this.options.modal ) {
                        return;
                }

                if ( this.overlay ) {
                        var overlays = this.document.data( "ui-dialog-overlays" ) - 1;

                        if ( !overlays ) {
                                this._off( this.document, "focusin" );
                                this.document.removeData( "ui-dialog-overlays" );
                        } else {
                                this.document.data( "ui-dialog-overlays", overlays );
                        }

                        this.overlay.remove();
                        this.overlay = null;
                }
        }
} );

// DEPRECATED
// TODO: switch return back to widget declaration at top of file when this is removed
if ( $.uiBackCompat !== false ) {

        // Backcompat for dialogClass option
        $.widget( "ui.dialog", $.ui.dialog, {
                options: {
                        dialogClass: ""
                },
                _createWrapper: function() {
                        this._super();
                        this.uiDialog.addClass( this.options.dialogClass );
                },
                _setOption: function( key, value ) {
                        if ( key === "dialogClass" ) {
                                this.uiDialog
                                        .removeClass( this.options.dialogClass )
                                        .addClass( value );
                        }
                        this._superApply( arguments );
                }
        } );
}

return $.ui.dialog;

} ) );