/*!

* jQuery UI Selectmenu 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/selectmenu
*/

(function( factory ) {

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

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

        // Browser globals
        factory( jQuery );
}

}(function( $ ) {

return $.widget( “ui.selectmenu”, {

version: "1.11.4",
defaultElement: "<select>",
options: {
        appendTo: null,
        disabled: null,
        icons: {
                button: "ui-icon-triangle-1-s"
        },
        position: {
                my: "left top",
                at: "left bottom",
                collision: "none"
        },
        width: null,

        // callbacks
        change: null,
        close: null,
        focus: null,
        open: null,
        select: null
},

_create: function() {
        var selectmenuId = this.element.uniqueId().attr( "id" );
        this.ids = {
                element: selectmenuId,
                button: selectmenuId + "-button",
                menu: selectmenuId + "-menu"
        };

        this._drawButton();
        this._drawMenu();

        if ( this.options.disabled ) {
                this.disable();
        }
},

_drawButton: function() {
        var that = this;

        // Associate existing label with the new button
        this.label = $( "label[for='" + this.ids.element + "']" ).attr( "for", this.ids.button );
        this._on( this.label, {
                click: function( event ) {
                        this.button.focus();
                        event.preventDefault();
                }
        });

        // Hide original select element
        this.element.hide();

        // Create button
        this.button = $( "<span>", {
                "class": "ui-selectmenu-button ui-widget ui-state-default ui-corner-all",
                tabindex: this.options.disabled ? -1 : 0,
                id: this.ids.button,
                role: "combobox",
                "aria-expanded": "false",
                "aria-autocomplete": "list",
                "aria-owns": this.ids.menu,
                "aria-haspopup": "true"
        })
                .insertAfter( this.element );

        $( "<span>", {
                "class": "ui-icon " + this.options.icons.button
        })
                .prependTo( this.button );

        this.buttonText = $( "<span>", {
                "class": "ui-selectmenu-text"
        })
                .appendTo( this.button );

        this._setText( this.buttonText, this.element.find( "option:selected" ).text() );
        this._resizeButton();

        this._on( this.button, this._buttonEvents );
        this.button.one( "focusin", function() {

                // Delay rendering the menu items until the button receives focus.
                // The menu may have already been rendered via a programmatic open.
                if ( !that.menuItems ) {
                        that._refreshMenu();
                }
        });
        this._hoverable( this.button );
        this._focusable( this.button );
},

_drawMenu: function() {
        var that = this;

        // Create menu
        this.menu = $( "<ul>", {
                "aria-hidden": "true",
                "aria-labelledby": this.ids.button,
                id: this.ids.menu
        });

        // Wrap menu
        this.menuWrap = $( "<div>", {
                "class": "ui-selectmenu-menu ui-front"
        })
                .append( this.menu )
                .appendTo( this._appendTo() );

        // Initialize menu widget
        this.menuInstance = this.menu
                .menu({
                        role: "listbox",
                        select: function( event, ui ) {
                                event.preventDefault();

                                // support: IE8
                                // If the item was selected via a click, the text selection
                                // will be destroyed in IE
                                that._setSelection();

                                that._select( ui.item.data( "ui-selectmenu-item" ), event );
                        },
                        focus: function( event, ui ) {
                                var item = ui.item.data( "ui-selectmenu-item" );

                                // Prevent inital focus from firing and check if its a newly focused item
                                if ( that.focusIndex != null && item.index !== that.focusIndex ) {
                                        that._trigger( "focus", event, { item: item } );
                                        if ( !that.isOpen ) {
                                                that._select( item, event );
                                        }
                                }
                                that.focusIndex = item.index;

                                that.button.attr( "aria-activedescendant",
                                        that.menuItems.eq( item.index ).attr( "id" ) );
                        }
                })
                .menu( "instance" );

        // Adjust menu styles to dropdown
        this.menu
                .addClass( "ui-corner-bottom" )
                .removeClass( "ui-corner-all" );

        // Don't close the menu on mouseleave
        this.menuInstance._off( this.menu, "mouseleave" );

        // Cancel the menu's collapseAll on document click
        this.menuInstance._closeOnDocumentClick = function() {
                return false;
        };

        // Selects often contain empty items, but never contain dividers
        this.menuInstance._isDivider = function() {
                return false;
        };
},

refresh: function() {
        this._refreshMenu();
        this._setText( this.buttonText, this._getSelectedItem().text() );
        if ( !this.options.width ) {
                this._resizeButton();
        }
},

_refreshMenu: function() {
        this.menu.empty();

        var item,
                options = this.element.find( "option" );

        if ( !options.length ) {
                return;
        }

        this._parseOptions( options );
        this._renderMenu( this.menu, this.items );

        this.menuInstance.refresh();
        this.menuItems = this.menu.find( "li" ).not( ".ui-selectmenu-optgroup" );

        item = this._getSelectedItem();

        // Update the menu to have the correct item focused
        this.menuInstance.focus( null, item );
        this._setAria( item.data( "ui-selectmenu-item" ) );

        // Set disabled state
        this._setOption( "disabled", this.element.prop( "disabled" ) );
},

open: function( event ) {
        if ( this.options.disabled ) {
                return;
        }

        // If this is the first time the menu is being opened, render the items
        if ( !this.menuItems ) {
                this._refreshMenu();
        } else {

                // Menu clears focus on close, reset focus to selected item
                this.menu.find( ".ui-state-focus" ).removeClass( "ui-state-focus" );
                this.menuInstance.focus( null, this._getSelectedItem() );
        }

        this.isOpen = true;
        this._toggleAttr();
        this._resizeMenu();
        this._position();

        this._on( this.document, this._documentClick );

        this._trigger( "open", event );
},

_position: function() {
        this.menuWrap.position( $.extend( { of: this.button }, this.options.position ) );
},

close: function( event ) {
        if ( !this.isOpen ) {
                return;
        }

        this.isOpen = false;
        this._toggleAttr();

        this.range = null;
        this._off( this.document );

        this._trigger( "close", event );
},

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

menuWidget: function() {
        return this.menu;
},

_renderMenu: function( ul, items ) {
        var that = this,
                currentOptgroup = "";

        $.each( items, function( index, item ) {
                if ( item.optgroup !== currentOptgroup ) {
                        $( "<li>", {
                                "class": "ui-selectmenu-optgroup ui-menu-divider" +
                                        ( item.element.parent( "optgroup" ).prop( "disabled" ) ?
                                                " ui-state-disabled" :
                                                "" ),
                                text: item.optgroup
                        })
                                .appendTo( ul );

                        currentOptgroup = item.optgroup;
                }

                that._renderItemData( ul, item );
        });
},

_renderItemData: function( ul, item ) {
        return this._renderItem( ul, item ).data( "ui-selectmenu-item", item );
},

_renderItem: function( ul, item ) {
        var li = $( "<li>" );

        if ( item.disabled ) {
                li.addClass( "ui-state-disabled" );
        }
        this._setText( li, item.label );

        return li.appendTo( ul );
},

_setText: function( element, value ) {
        if ( value ) {
                element.text( value );
        } else {
                element.html( "&#160;" );
        }
},

_move: function( direction, event ) {
        var item, next,
                filter = ".ui-menu-item";

        if ( this.isOpen ) {
                item = this.menuItems.eq( this.focusIndex );
        } else {
                item = this.menuItems.eq( this.element[ 0 ].selectedIndex );
                filter += ":not(.ui-state-disabled)";
        }

        if ( direction === "first" || direction === "last" ) {
                next = item[ direction === "first" ? "prevAll" : "nextAll" ]( filter ).eq( -1 );
        } else {
                next = item[ direction + "All" ]( filter ).eq( 0 );
        }

        if ( next.length ) {
                this.menuInstance.focus( event, next );
        }
},

_getSelectedItem: function() {
        return this.menuItems.eq( this.element[ 0 ].selectedIndex );
},

_toggle: function( event ) {
        this[ this.isOpen ? "close" : "open" ]( event );
},

_setSelection: function() {
        var selection;

        if ( !this.range ) {
                return;
        }

        if ( window.getSelection ) {
                selection = window.getSelection();
                selection.removeAllRanges();
                selection.addRange( this.range );

        // support: IE8
        } else {
                this.range.select();
        }

        // support: IE
        // Setting the text selection kills the button focus in IE, but
        // restoring the focus doesn't kill the selection.
        this.button.focus();
},

_documentClick: {
        mousedown: function( event ) {
                if ( !this.isOpen ) {
                        return;
                }

                if ( !$( event.target ).closest( ".ui-selectmenu-menu, #" + this.ids.button ).length ) {
                        this.close( event );
                }
        }
},

_buttonEvents: {

        // Prevent text selection from being reset when interacting with the selectmenu (#10144)
        mousedown: function() {
                var selection;

                if ( window.getSelection ) {
                        selection = window.getSelection();
                        if ( selection.rangeCount ) {
                                this.range = selection.getRangeAt( 0 );
                        }

                // support: IE8
                } else {
                        this.range = document.selection.createRange();
                }
        },

        click: function( event ) {
                this._setSelection();
                this._toggle( event );
        },

        keydown: function( event ) {
                var preventDefault = true;
                switch ( event.keyCode ) {
                        case $.ui.keyCode.TAB:
                        case $.ui.keyCode.ESCAPE:
                                this.close( event );
                                preventDefault = false;
                                break;
                        case $.ui.keyCode.ENTER:
                                if ( this.isOpen ) {
                                        this._selectFocusedItem( event );
                                }
                                break;
                        case $.ui.keyCode.UP:
                                if ( event.altKey ) {
                                        this._toggle( event );
                                } else {
                                        this._move( "prev", event );
                                }
                                break;
                        case $.ui.keyCode.DOWN:
                                if ( event.altKey ) {
                                        this._toggle( event );
                                } else {
                                        this._move( "next", event );
                                }
                                break;
                        case $.ui.keyCode.SPACE:
                                if ( this.isOpen ) {
                                        this._selectFocusedItem( event );
                                } else {
                                        this._toggle( event );
                                }
                                break;
                        case $.ui.keyCode.LEFT:
                                this._move( "prev", event );
                                break;
                        case $.ui.keyCode.RIGHT:
                                this._move( "next", event );
                                break;
                        case $.ui.keyCode.HOME:
                        case $.ui.keyCode.PAGE_UP:
                                this._move( "first", event );
                                break;
                        case $.ui.keyCode.END:
                        case $.ui.keyCode.PAGE_DOWN:
                                this._move( "last", event );
                                break;
                        default:
                                this.menu.trigger( event );
                                preventDefault = false;
                }

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

_selectFocusedItem: function( event ) {
        var item = this.menuItems.eq( this.focusIndex );
        if ( !item.hasClass( "ui-state-disabled" ) ) {
                this._select( item.data( "ui-selectmenu-item" ), event );
        }
},

_select: function( item, event ) {
        var oldIndex = this.element[ 0 ].selectedIndex;

        // Change native select element
        this.element[ 0 ].selectedIndex = item.index;
        this._setText( this.buttonText, item.label );
        this._setAria( item );
        this._trigger( "select", event, { item: item } );

        if ( item.index !== oldIndex ) {
                this._trigger( "change", event, { item: item } );
        }

        this.close( event );
},

_setAria: function( item ) {
        var id = this.menuItems.eq( item.index ).attr( "id" );

        this.button.attr({
                "aria-labelledby": id,
                "aria-activedescendant": id
        });
        this.menu.attr( "aria-activedescendant", id );
},

_setOption: function( key, value ) {
        if ( key === "icons" ) {
                this.button.find( "span.ui-icon" )
                        .removeClass( this.options.icons.button )
                        .addClass( value.button );
        }

        this._super( key, value );

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

        if ( key === "disabled" ) {
                this.menuInstance.option( "disabled", value );
                this.button
                        .toggleClass( "ui-state-disabled", value )
                        .attr( "aria-disabled", value );

                this.element.prop( "disabled", value );
                if ( value ) {
                        this.button.attr( "tabindex", -1 );
                        this.close();
                } else {
                        this.button.attr( "tabindex", 0 );
                }
        }

        if ( key === "width" ) {
                this._resizeButton();
        }
},

_appendTo: function() {
        var element = this.options.appendTo;

        if ( element ) {
                element = element.jquery || element.nodeType ?
                        $( element ) :
                        this.document.find( element ).eq( 0 );
        }

        if ( !element || !element[ 0 ] ) {
                element = this.element.closest( ".ui-front" );
        }

        if ( !element.length ) {
                element = this.document[ 0 ].body;
        }

        return element;
},

_toggleAttr: function() {
        this.button
                .toggleClass( "ui-corner-top", this.isOpen )
                .toggleClass( "ui-corner-all", !this.isOpen )
                .attr( "aria-expanded", this.isOpen );
        this.menuWrap.toggleClass( "ui-selectmenu-open", this.isOpen );
        this.menu.attr( "aria-hidden", !this.isOpen );
},

_resizeButton: function() {
        var width = this.options.width;

        if ( !width ) {
                width = this.element.show().outerWidth();
                this.element.hide();
        }

        this.button.outerWidth( width );
},

_resizeMenu: function() {
        this.menu.outerWidth( Math.max(
                this.button.outerWidth(),

                // support: IE10
                // IE10 wraps long text (possibly a rounding bug)
                // so we add 1px to avoid the wrapping
                this.menu.width( "" ).outerWidth() + 1
        ) );
},

_getCreateOptions: function() {
        return { disabled: this.element.prop( "disabled" ) };
},

_parseOptions: function( options ) {
        var data = [];
        options.each(function( index, item ) {
                var option = $( item ),
                        optgroup = option.parent( "optgroup" );
                data.push({
                        element: option,
                        index: index,
                        value: option.val(),
                        label: option.text(),
                        optgroup: optgroup.attr( "label" ) || "",
                        disabled: optgroup.prop( "disabled" ) || option.prop( "disabled" )
                });
        });
        this.items = data;
},

_destroy: function() {
        this.menuWrap.remove();
        this.button.remove();
        this.element.show();
        this.element.removeUniqueId();
        this.label.attr( "for", this.ids.element );
}

});

}));