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+/*
+ * jQuery UI Menubar 1.9pre
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Menubar
+ *
+ * Depends:
+ * jquery.ui.core.js
+ * jquery.ui.widget.js
+ * jquery.ui.position.js
+ * jquery.ui.menu.js
+ */
+(function( $ ) {
+
+// TODO when mixing clicking menus and keyboard navigation, focus handling is broken
+// there has to be just one item that has tabindex
+$.widget( "ui.menubar", {
+ version: "1.9pre",
+ options: {
+ autoExpand: false,
+ buttons: false,
+ menuIcon: false,
+ position: {
+ my: "left top",
+ at: "left bottom"
+ }
+ },
+ _create: function() {
+ var that = this;
+ var items = this.items = this.element.children( "li" )
+ .addClass( "ui-menubar-item" )
+ .attr( "role", "presentation" )
+ .children( "button, a" );
+ // let only the first item receive focus
+ items.slice(1).attr( "tabIndex", -1 );
+
+ this.element
+ .addClass( "ui-menubar ui-widget-header ui-helper-clearfix" )
+ .attr( "role", "menubar" );
+ this._focusable( items );
+ this._hoverable( items );
+ items.next( "ul" )
+ .menu({
+ position: {
+ within: this.options.position.within
+ },
+ select: function( event, ui ) {
+ ui.item.parents( "ul.ui-menu:last" ).hide();
+ that._close();
+ // TODO what is this targetting? there's probably a better way to access it
+ $(event.target).prev().focus();
+ that._trigger( "select", event, ui );
+ }
+ })
+ .hide()
+ .attr({
+ "aria-hidden": "true",
+ "aria-expanded": "false"
+ })
+ .bind( "keydown.menubar", function( event ) {
+ var menu = $( this );
+ if ( menu.is( ":hidden" ) )
+ return;
+ switch ( event.keyCode ) {
+ case $.ui.keyCode.LEFT:
+ that._left( event );
+ event.preventDefault();
+ break;
+ case $.ui.keyCode.RIGHT:
+ that._right( event );
+ event.preventDefault();
+ break;
+ };
+ });
+ items.each(function() {
+ var input = $(this),
+ // TODO menu var is only used on two places, doesn't quite justify the .each
+ menu = input.next( "ul" );
+
+ input.bind( "click.menubar focus.menubar mouseenter.menubar", function( event ) {
+ // ignore triggered focus event
+ if ( event.type == "focus" && !event.originalEvent ) {
+ return;
+ }
+ event.preventDefault();
+ // TODO can we simplify or extractthis check? especially the last two expressions
+ // there's a similar active[0] == menu[0] check in _open
+ if ( event.type == "click" && menu.is( ":visible" ) && that.active && that.active[0] == menu[0] ) {
+ that._close();
+ return;
+ }
+ if ( ( that.open && event.type == "mouseenter" ) || event.type == "click" || that.options.autoExpand ) {
+ if( that.options.autoExpand ) {
+ clearTimeout( that.closeTimer );
+ }
+
+ that._open( event, menu );
+ }
+ })
+ .bind( "keydown", function( event ) {
+ switch ( event.keyCode ) {
+ case $.ui.keyCode.SPACE:
+ case $.ui.keyCode.UP:
+ case $.ui.keyCode.DOWN:
+ that._open( event, $( this ).next() );
+ event.preventDefault();
+ break;
+ case $.ui.keyCode.LEFT:
+ that._prev( event, $( this ) );
+ event.preventDefault();
+ break;
+ case $.ui.keyCode.RIGHT:
+ that._next( event, $( this ) );
+ event.preventDefault();
+ break;
+ }
+ })
+ .addClass( "ui-button ui-widget ui-button-text-only ui-menubar-link" )
+ .attr( "role", "menuitem" )
+ .attr( "aria-haspopup", "true" )
+ .wrapInner( "<span class='ui-button-text'></span>" );
+
+ // TODO review if these options are a good choice, maybe they can be merged
+ if ( that.options.menuIcon ) {
+ input.addClass( "ui-state-default" ).append( "<span class='ui-button-icon-secondary ui-icon ui-icon-triangle-1-s'></span>" );
+ input.removeClass( "ui-button-text-only" ).addClass( "ui-button-text-icon-secondary" );
+ }
+
+ if ( !that.options.buttons ) {
+ // TODO ui-menubar-link is added above, not needed here?
+ input.addClass( "ui-menubar-link" ).removeClass( "ui-state-default" );
+ };
+
+ });
+ that._bind( {
+ keydown: function( event ) {
+ if ( event.keyCode == $.ui.keyCode.ESCAPE && that.active && that.active.menu( "collapse", event ) !== true ) {
+ var active = that.active;
+ that.active.blur();
+ that._close( event );
+ active.prev().focus();
+ }
+ },
+ focusin: function( event ) {
+ clearTimeout( that.closeTimer );
+ },
+ focusout: function( event ) {
+ that.closeTimer = setTimeout( function() {
+ that._close( event );
+ }, 150);
+ },
+ "mouseleave .ui-menubar-item": function( event ) {
+ if ( that.options.autoExpand ) {
+ that.closeTimer = setTimeout( function() {
+ that._close( event );
+ }, 150);
+ }
+ },
+ "mouseenter .ui-menubar-item": function( event ) {
+ clearTimeout( that.closeTimer );
+ }
+ });
+ },
+
+ _destroy : function() {
+ var items = this.element.children( "li" )
+ .removeClass( "ui-menubar-item" )
+ .removeAttr( "role" )
+ .children( "button, a" );
+
+ this.element
+ .removeClass( "ui-menubar ui-widget-header ui-helper-clearfix" )
+ .removeAttr( "role" )
+ .unbind( ".menubar" );
+
+ items
+ .unbind( ".menubar" )
+ .removeClass( "ui-button ui-widget ui-button-text-only ui-menubar-link ui-state-default" )
+ .removeAttr( "role" )
+ .removeAttr( "aria-haspopup" )
+ // TODO unwrap?
+ .children( "span.ui-button-text" ).each(function( i, e ) {
+ var item = $( this );
+ item.parent().html( item.html() );
+ })
+ .end()
+ .children( ".ui-icon" ).remove();
+
+ this.element.find( ":ui-menu" )
+ .menu( "destroy" )
+ .show()
+ .removeAttr( "aria-hidden" )
+ .removeAttr( "aria-expanded" )
+ .removeAttr( "tabindex" )
+ .unbind( ".menubar" );
+ },
+
+ _close: function() {
+ if ( !this.active || !this.active.length )
+ return;
+ this.active
+ .menu( "collapseAll" )
+ .hide()
+ .attr({
+ "aria-hidden": "true",
+ "aria-expanded": "false"
+ });
+ this.active
+ .prev()
+ .removeClass( "ui-state-active" )
+ .removeAttr( "tabIndex" );
+ this.active = null;
+ this.open = false;
+ },
+
+ _open: function( event, menu ) {
+ // on a single-button menubar, ignore reopening the same menu
+ if ( this.active && this.active[0] == menu[0] ) {
+ return;
+ }
+ // TODO refactor, almost the same as _close above, but don't remove tabIndex
+ if ( this.active ) {
+ this.active
+ .menu( "collapseAll" )
+ .hide()
+ .attr({
+ "aria-hidden": "true",
+ "aria-expanded": "false"
+ });
+ this.active
+ .prev()
+ .removeClass( "ui-state-active" );
+ }
+ // set tabIndex -1 to have the button skipped on shift-tab when menu is open (it gets focus)
+ var button = menu.prev().addClass( "ui-state-active" ).attr( "tabIndex", -1 );
+ this.active = menu
+ .show()
+ .position( $.extend({
+ of: button
+ }, this.options.position ) )
+ .removeAttr( "aria-hidden" )
+ .attr( "aria-expanded", "true" )
+ .menu("focus", event, menu.children( "li" ).first() )
+ // TODO need a comment here why both events are triggered
+ .focus()
+ .focusin();
+ this.open = true;
+ },
+
+ // TODO refactor this and the next three methods
+ _prev: function( event, button ) {
+ button.attr( "tabIndex", -1 );
+ var prev = button.parent().prevAll( "li" ).children( ".ui-button" ).eq( 0 );
+ if ( prev.length ) {
+ prev.removeAttr( "tabIndex" )[0].focus();
+ } else {
+ var lastItem = this.element.children( "li:last" ).children( ".ui-button:last" );
+ lastItem.removeAttr( "tabIndex" )[0].focus();
+ }
+ },
+
+ _next: function( event, button ) {
+ button.attr( "tabIndex", -1 );
+ var next = button.parent().nextAll( "li" ).children( ".ui-button" ).eq( 0 );
+ if ( next.length ) {
+ next.removeAttr( "tabIndex")[0].focus();
+ } else {
+ var firstItem = this.element.children( "li:first" ).children( ".ui-button:first" );
+ firstItem.removeAttr( "tabIndex" )[0].focus();
+ }
+ },
+
+ // TODO rename to parent
+ _left: function( event ) {
+ var prev = this.active.parent().prevAll( "li:eq(0)" ).children( ".ui-menu" ).eq( 0 );
+ if ( prev.length ) {
+ this._open( event, prev );
+ } else {
+ var lastItem = this.element.children( "li:last" ).children( ".ui-menu:first" );
+ this._open( event, lastItem );
+ }
+ },
+
+ // TODO rename to child (or something like that)
+ _right: function( event ) {
+ var next = this.active.parent().nextAll( "li:eq(0)" ).children( ".ui-menu" ).eq( 0 );
+ if ( next.length ) {
+ this._open( event, next );
+ } else {
+ var firstItem = this.element.children( "li:first" ).children( ".ui-menu:first" );
+ this._open( event, firstItem );
+ }
+ }
+});
+
+}( jQuery ));
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