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

//>>label: Menu
//>>group: Widgets
//>>description: Creates nestable menus.
//>>docs: http://api.jqueryui.com/menu/
//>>demos: http://jqueryui.com/menu/
//>>css.structure: ../../themes/base/core.css
//>>css.structure: ../../themes/base/menu.css
//>>css.theme: ../../themes/base/theme.css

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

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

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

return $.widget( "ui.menu", {
        version: "1.12.1",
        defaultElement: "<ul>",
        delay: 300,
        options: {
                icons: {
                        submenu: "ui-icon-caret-1-e"
                },
                items: "> *",
                menus: "ul",
                position: {
                        my: "left top",
                        at: "right top"
                },
                role: "menu",

                // Callbacks
                blur: null,
                focus: null,
                select: null
        },

        _create: function() {
                this.activeMenu = this.element;

                // Flag used to prevent firing of the click handler
                // as the event bubbles up through nested menus
                this.mouseHandled = false;
                this.element
                        .uniqueId()
                        .attr( {
                                role: this.options.role,
                                tabIndex: 0
                        } );

                this._addClass( "ui-menu", "ui-widget ui-widget-content" );
                this._on( {

                        // Prevent focus from sticking to links inside menu after clicking
                        // them (focus should always stay on UL during navigation).
                        "mousedown .ui-menu-item": function( event ) {
                                event.preventDefault();
                        },
                        "click .ui-menu-item": function( event ) {
                                var target = $( event.target );
                                var active = $( $.ui.safeActiveElement( this.document[ 0 ] ) );
                                if ( !this.mouseHandled && target.not( ".ui-state-disabled" ).length ) {
                                        this.select( event );

                                        // Only set the mouseHandled flag if the event will bubble, see #9469.
                                        if ( !event.isPropagationStopped() ) {
                                                this.mouseHandled = true;
                                        }

                                        // Open submenu on click
                                        if ( target.has( ".ui-menu" ).length ) {
                                                this.expand( event );
                                        } else if ( !this.element.is( ":focus" ) &&
                                                        active.closest( ".ui-menu" ).length ) {

                                                // Redirect focus to the menu
                                                this.element.trigger( "focus", [ true ] );

                                                // If the active item is on the top level, let it stay active.
                                                // Otherwise, blur the active item since it is no longer visible.
                                                if ( this.active && this.active.parents( ".ui-menu" ).length === 1 ) {
                                                        clearTimeout( this.timer );
                                                }
                                        }
                                }
                        },
                        "mouseenter .ui-menu-item": function( event ) {

                                // Ignore mouse events while typeahead is active, see #10458.
                                // Prevents focusing the wrong item when typeahead causes a scroll while the mouse
                                // is over an item in the menu
                                if ( this.previousFilter ) {
                                        return;
                                }

                                var actualTarget = $( event.target ).closest( ".ui-menu-item" ),
                                        target = $( event.currentTarget );

                                // Ignore bubbled events on parent items, see #11641
                                if ( actualTarget[ 0 ] !== target[ 0 ] ) {
                                        return;
                                }

                                // Remove ui-state-active class from siblings of the newly focused menu item
                                // to avoid a jump caused by adjacent elements both having a class with a border
                                this._removeClass( target.siblings().children( ".ui-state-active" ),
                                        null, "ui-state-active" );
                                this.focus( event, target );
                        },
                        mouseleave: "collapseAll",
                        "mouseleave .ui-menu": "collapseAll",
                        focus: function( event, keepActiveItem ) {

                                // If there's already an active item, keep it active
                                // If not, activate the first item
                                var item = this.active || this.element.find( this.options.items ).eq( 0 );

                                if ( !keepActiveItem ) {
                                        this.focus( event, item );
                                }
                        },
                        blur: function( event ) {
                                this._delay( function() {
                                        var notContained = !$.contains(
                                                this.element[ 0 ],
                                                $.ui.safeActiveElement( this.document[ 0 ] )
                                        );
                                        if ( notContained ) {
                                                this.collapseAll( event );
                                        }
                                } );
                        },
                        keydown: "_keydown"
                } );

                this.refresh();

                // Clicks outside of a menu collapse any open menus
                this._on( this.document, {
                        click: function( event ) {
                                if ( this._closeOnDocumentClick( event ) ) {
                                        this.collapseAll( event );
                                }

                                // Reset the mouseHandled flag
                                this.mouseHandled = false;
                        }
                } );
        },

        _destroy: function() {
                var items = this.element.find( ".ui-menu-item" )
                                .removeAttr( "role aria-disabled" ),
                        submenus = items.children( ".ui-menu-item-wrapper" )
                                .removeUniqueId()
                                .removeAttr( "tabIndex role aria-haspopup" );

                // Destroy (sub)menus
                this.element
                        .removeAttr( "aria-activedescendant" )
                        .find( ".ui-menu" ).addBack()
                                .removeAttr( "role aria-labelledby aria-expanded aria-hidden aria-disabled " +
                                        "tabIndex" )
                                .removeUniqueId()
                                .show();

                submenus.children().each( function() {
                        var elem = $( this );
                        if ( elem.data( "ui-menu-submenu-caret" ) ) {
                                elem.remove();
                        }
                } );
        },

        _keydown: function( event ) {
                var match, prev, character, skip,
                        preventDefault = true;

                switch ( event.keyCode ) {
                case $.ui.keyCode.PAGE_UP:
                        this.previousPage( event );
                        break;
                case $.ui.keyCode.PAGE_DOWN:
                        this.nextPage( event );
                        break;
                case $.ui.keyCode.HOME:
                        this._move( "first", "first", event );
                        break;
                case $.ui.keyCode.END:
                        this._move( "last", "last", event );
                        break;
                case $.ui.keyCode.UP:
                        this.previous( event );
                        break;
                case $.ui.keyCode.DOWN:
                        this.next( event );
                        break;
                case $.ui.keyCode.LEFT:
                        this.collapse( event );
                        break;
                case $.ui.keyCode.RIGHT:
                        if ( this.active && !this.active.is( ".ui-state-disabled" ) ) {
                                this.expand( event );
                        }
                        break;
                case $.ui.keyCode.ENTER:
                case $.ui.keyCode.SPACE:
                        this._activate( event );
                        break;
                case $.ui.keyCode.ESCAPE:
                        this.collapse( event );
                        break;
                default:
                        preventDefault = false;
                        prev = this.previousFilter || "";
                        skip = false;

                        // Support number pad values
                        character = event.keyCode >= 96 && event.keyCode <= 105 ?
                                ( event.keyCode - 96 ).toString() : String.fromCharCode( event.keyCode );

                        clearTimeout( this.filterTimer );

                        if ( character === prev ) {
                                skip = true;
                        } else {
                                character = prev + character;
                        }

                        match = this._filterMenuItems( character );
                        match = skip && match.index( this.active.next() ) !== -1 ?
                                this.active.nextAll( ".ui-menu-item" ) :
                                match;

                        // If no matches on the current filter, reset to the last character pressed
                        // to move down the menu to the first item that starts with that character
                        if ( !match.length ) {
                                character = String.fromCharCode( event.keyCode );
                                match = this._filterMenuItems( character );
                        }

                        if ( match.length ) {
                                this.focus( event, match );
                                this.previousFilter = character;
                                this.filterTimer = this._delay( function() {
                                        delete this.previousFilter;
                                }, 1000 );
                        } else {
                                delete this.previousFilter;
                        }
                }

                if ( preventDefault ) {
                        event.preventDefault();
                }
        },

        _activate: function( event ) {
                if ( this.active && !this.active.is( ".ui-state-disabled" ) ) {
                        if ( this.active.children( "[aria-haspopup='true']" ).length ) {
                                this.expand( event );
                        } else {
                                this.select( event );
                        }
                }
        },

        refresh: function() {
                var menus, items, newSubmenus, newItems, newWrappers,
                        that = this,
                        icon = this.options.icons.submenu,
                        submenus = this.element.find( this.options.menus );

                this._toggleClass( "ui-menu-icons", null, !!this.element.find( ".ui-icon" ).length );

                // Initialize nested menus
                newSubmenus = submenus.filter( ":not(.ui-menu)" )
                        .hide()
                        .attr( {
                                role: this.options.role,
                                "aria-hidden": "true",
                                "aria-expanded": "false"
                        } )
                        .each( function() {
                                var menu = $( this ),
                                        item = menu.prev(),
                                        submenuCaret = $( "<span>" ).data( "ui-menu-submenu-caret", true );

                                that._addClass( submenuCaret, "ui-menu-icon", "ui-icon " + icon );
                                item
                                        .attr( "aria-haspopup", "true" )
                                        .prepend( submenuCaret );
                                menu.attr( "aria-labelledby", item.attr( "id" ) );
                        } );

                this._addClass( newSubmenus, "ui-menu", "ui-widget ui-widget-content ui-front" );

                menus = submenus.add( this.element );
                items = menus.find( this.options.items );

                // Initialize menu-items containing spaces and/or dashes only as dividers
                items.not( ".ui-menu-item" ).each( function() {
                        var item = $( this );
                        if ( that._isDivider( item ) ) {
                                that._addClass( item, "ui-menu-divider", "ui-widget-content" );
                        }
                } );

                // Don't refresh list items that are already adapted
                newItems = items.not( ".ui-menu-item, .ui-menu-divider" );
                newWrappers = newItems.children()
                        .not( ".ui-menu" )
                                .uniqueId()
                                .attr( {
                                        tabIndex: -1,
                                        role: this._itemRole()
                                } );
                this._addClass( newItems, "ui-menu-item" )
                        ._addClass( newWrappers, "ui-menu-item-wrapper" );

                // Add aria-disabled attribute to any disabled menu item
                items.filter( ".ui-state-disabled" ).attr( "aria-disabled", "true" );

                // If the active item has been removed, blur the menu
                if ( this.active && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) {
                        this.blur();
                }
        },

        _itemRole: function() {
                return {
                        menu: "menuitem",
                        listbox: "option"
                }[ this.options.role ];
        },

        _setOption: function( key, value ) {
                if ( key === "icons" ) {
                        var icons = this.element.find( ".ui-menu-icon" );
                        this._removeClass( icons, null, this.options.icons.submenu )
                                ._addClass( icons, null, value.submenu );
                }
                this._super( key, value );
        },

        _setOptionDisabled: function( value ) {
                this._super( value );

                this.element.attr( "aria-disabled", String( value ) );
                this._toggleClass( null, "ui-state-disabled", !!value );
        },

        focus: function( event, item ) {
                var nested, focused, activeParent;
                this.blur( event, event && event.type === "focus" );

                this._scrollIntoView( item );

                this.active = item.first();

                focused = this.active.children( ".ui-menu-item-wrapper" );
                this._addClass( focused, null, "ui-state-active" );

                // Only update aria-activedescendant if there's a role
                // otherwise we assume focus is managed elsewhere
                if ( this.options.role ) {
                        this.element.attr( "aria-activedescendant", focused.attr( "id" ) );
                }

                // Highlight active parent menu item, if any
                activeParent = this.active
                        .parent()
                                .closest( ".ui-menu-item" )
                                        .children( ".ui-menu-item-wrapper" );
                this._addClass( activeParent, null, "ui-state-active" );

                if ( event && event.type === "keydown" ) {
                        this._close();
                } else {
                        this.timer = this._delay( function() {
                                this._close();
                        }, this.delay );
                }

                nested = item.children( ".ui-menu" );
                if ( nested.length && event && ( /^mouse/.test( event.type ) ) ) {
                        this._startOpening( nested );
                }
                this.activeMenu = item.parent();

                this._trigger( "focus", event, { item: item } );
        },

        _scrollIntoView: function( item ) {
                var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight;
                if ( this._hasScroll() ) {
                        borderTop = parseFloat( $.css( this.activeMenu[ 0 ], "borderTopWidth" ) ) || 0;
                        paddingTop = parseFloat( $.css( this.activeMenu[ 0 ], "paddingTop" ) ) || 0;
                        offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop;
                        scroll = this.activeMenu.scrollTop();
                        elementHeight = this.activeMenu.height();
                        itemHeight = item.outerHeight();

                        if ( offset < 0 ) {
                                this.activeMenu.scrollTop( scroll + offset );
                        } else if ( offset + itemHeight > elementHeight ) {
                                this.activeMenu.scrollTop( scroll + offset - elementHeight + itemHeight );
                        }
                }
        },

        blur: function( event, fromFocus ) {
                if ( !fromFocus ) {
                        clearTimeout( this.timer );
                }

                if ( !this.active ) {
                        return;
                }

                this._removeClass( this.active.children( ".ui-menu-item-wrapper" ),
                        null, "ui-state-active" );

                this._trigger( "blur", event, { item: this.active } );
                this.active = null;
        },

        _startOpening: function( submenu ) {
                clearTimeout( this.timer );

                // Don't open if already open fixes a Firefox bug that caused a .5 pixel
                // shift in the submenu position when mousing over the caret icon
                if ( submenu.attr( "aria-hidden" ) !== "true" ) {
                        return;
                }

                this.timer = this._delay( function() {
                        this._close();
                        this._open( submenu );
                }, this.delay );
        },

        _open: function( submenu ) {
                var position = $.extend( {
                        of: this.active
                }, this.options.position );

                clearTimeout( this.timer );
                this.element.find( ".ui-menu" ).not( submenu.parents( ".ui-menu" ) )
                        .hide()
                        .attr( "aria-hidden", "true" );

                submenu
                        .show()
                        .removeAttr( "aria-hidden" )
                        .attr( "aria-expanded", "true" )
                        .position( position );
        },

        collapseAll: function( event, all ) {
                clearTimeout( this.timer );
                this.timer = this._delay( function() {

                        // If we were passed an event, look for the submenu that contains the event
                        var currentMenu = all ? this.element :
                                $( event && event.target ).closest( this.element.find( ".ui-menu" ) );

                        // If we found no valid submenu ancestor, use the main menu to close all
                        // sub menus anyway
                        if ( !currentMenu.length ) {
                                currentMenu = this.element;
                        }

                        this._close( currentMenu );

                        this.blur( event );

                        // Work around active item staying active after menu is blurred
                        this._removeClass( currentMenu.find( ".ui-state-active" ), null, "ui-state-active" );

                        this.activeMenu = currentMenu;
                }, this.delay );
        },

        // With no arguments, closes the currently active menu - if nothing is active
        // it closes all menus.  If passed an argument, it will search for menus BELOW
        _close: function( startMenu ) {
                if ( !startMenu ) {
                        startMenu = this.active ? this.active.parent() : this.element;
                }

                startMenu.find( ".ui-menu" )
                        .hide()
                        .attr( "aria-hidden", "true" )
                        .attr( "aria-expanded", "false" );
        },

        _closeOnDocumentClick: function( event ) {
                return !$( event.target ).closest( ".ui-menu" ).length;
        },

        _isDivider: function( item ) {

                // Match hyphen, em dash, en dash
                return !/[^\-\u2014\u2013\s]/.test( item.text() );
        },

        collapse: function( event ) {
                var newItem = this.active &&
                        this.active.parent().closest( ".ui-menu-item", this.element );
                if ( newItem && newItem.length ) {
                        this._close();
                        this.focus( event, newItem );
                }
        },

        expand: function( event ) {
                var newItem = this.active &&
                        this.active
                                .children( ".ui-menu " )
                                        .find( this.options.items )
                                                .first();

                if ( newItem && newItem.length ) {
                        this._open( newItem.parent() );

                        // Delay so Firefox will not hide activedescendant change in expanding submenu from AT
                        this._delay( function() {
                                this.focus( event, newItem );
                        } );
                }
        },

        next: function( event ) {
                this._move( "next", "first", event );
        },

        previous: function( event ) {
                this._move( "prev", "last", event );
        },

        isFirstItem: function() {
                return this.active && !this.active.prevAll( ".ui-menu-item" ).length;
        },

        isLastItem: function() {
                return this.active && !this.active.nextAll( ".ui-menu-item" ).length;
        },

        _move: function( direction, filter, event ) {
                var next;
                if ( this.active ) {
                        if ( direction === "first" || direction === "last" ) {
                                next = this.active
                                        [ direction === "first" ? "prevAll" : "nextAll" ]( ".ui-menu-item" )
                                        .eq( -1 );
                        } else {
                                next = this.active
                                        [ direction + "All" ]( ".ui-menu-item" )
                                        .eq( 0 );
                        }
                }
                if ( !next || !next.length || !this.active ) {
                        next = this.activeMenu.find( this.options.items )[ filter ]();
                }

                this.focus( event, next );
        },

        nextPage: function( event ) {
                var item, base, height;

                if ( !this.active ) {
                        this.next( event );
                        return;
                }
                if ( this.isLastItem() ) {
                        return;
                }
                if ( this._hasScroll() ) {
                        base = this.active.offset().top;
                        height = this.element.height();
                        this.active.nextAll( ".ui-menu-item" ).each( function() {
                                item = $( this );
                                return item.offset().top - base - height < 0;
                        } );

                        this.focus( event, item );
                } else {
                        this.focus( event, this.activeMenu.find( this.options.items )
                                [ !this.active ? "first" : "last" ]() );
                }
        },

        previousPage: function( event ) {
                var item, base, height;
                if ( !this.active ) {
                        this.next( event );
                        return;
                }
                if ( this.isFirstItem() ) {
                        return;
                }
                if ( this._hasScroll() ) {
                        base = this.active.offset().top;
                        height = this.element.height();
                        this.active.prevAll( ".ui-menu-item" ).each( function() {
                                item = $( this );
                                return item.offset().top - base + height > 0;
                        } );

                        this.focus( event, item );
                } else {
                        this.focus( event, this.activeMenu.find( this.options.items ).first() );
                }
        },

        _hasScroll: function() {
                return this.element.outerHeight() < this.element.prop( "scrollHeight" );
        },

        select: function( event ) {

                // TODO: It should never be possible to not have an active item at this
                // point, but the tests don't trigger mouseenter before click.
                this.active = this.active || $( event.target ).closest( ".ui-menu-item" );
                var ui = { item: this.active };
                if ( !this.active.has( ".ui-menu" ).length ) {
                        this.collapseAll( event, true );
                }
                this._trigger( "select", event, ui );
        },

        _filterMenuItems: function( character ) {
                var escapedCharacter = character.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" ),
                        regex = new RegExp( "^" + escapedCharacter, "i" );

                return this.activeMenu
                        .find( this.options.items )

                                // Only match on items, not dividers or other content (#10571)
                                .filter( ".ui-menu-item" )
                                        .filter( function() {
                                                return regex.test(
                                                        $.trim( $( this ).children( ".ui-menu-item-wrapper" ).text() ) );
                                        } );
        }
} );

} ) );