mirror of
https://github.com/jquery/jquery-ui.git
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273 lines
7.9 KiB
JavaScript
273 lines
7.9 KiB
JavaScript
/*
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* jQuery UI Menubar @VERSION
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*
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* Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT or GPL Version 2 licenses.
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* http://jquery.org/license
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*
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* http://docs.jquery.com/UI/Menubar
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*
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* Depends:
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* jquery.ui.core.js
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* jquery.ui.widget.js
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* jquery.ui.position.js
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* jquery.ui.menu.js
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*/
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(function( $ ) {
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// TODO when mixing clicking menus and keyboard navigation, focus handling is broken
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// there has to be just one item that has tabindex
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$.widget( "ui.menubar", {
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options: {
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buttons: false,
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menuIcon: false
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},
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_create: function() {
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var that = this;
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var items = this.items = this.element.children( "li" )
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.addClass( "ui-menubar-item" )
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.attr( "role", "presentation" )
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.children( "button, a" );
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// let only the first item receive focus
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items.slice(1).attr( "tabIndex", -1 );
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this.element
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.addClass( "ui-menubar ui-widget-header ui-helper-clearfix" )
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.attr( "role", "menubar" );
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this._focusable( items );
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this._hoverable( items );
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items.next( "ul" )
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.menu({
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select: function( event, ui ) {
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ui.item.parents( "ul.ui-menu:last" ).hide();
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that._trigger( "select", event, ui );
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that._close();
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// TODO what is this targetting? there's probably a better way to access it
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$(event.target).prev().focus();
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}
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})
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.hide()
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.attr( "aria-hidden", "true" )
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.attr( "aria-expanded", "false" )
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.bind( "keydown.menubar", function( event ) {
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var menu = $( this );
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if ( menu.is( ":hidden" ) )
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return;
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switch ( event.keyCode ) {
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case $.ui.keyCode.LEFT:
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that._left( event );
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event.preventDefault();
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break;
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case $.ui.keyCode.RIGHT:
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that._right( event );
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event.preventDefault();
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break;
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};
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});
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items.each(function() {
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var input = $(this),
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// TODO menu var is only used on two places, doesn't quite justify the .each
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menu = input.next( "ul" );
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input.bind( "click.menubar focus.menubar mouseenter.menubar", function( event ) {
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// ignore triggered focus event
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if ( event.type == "focus" && !event.originalEvent ) {
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return;
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}
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event.preventDefault();
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// TODO can we simplify or extractthis check? especially the last two expressions
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// there's a similar active[0] == menu[0] check in _open
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if ( event.type == "click" && menu.is( ":visible" ) && that.active && that.active[0] == menu[0] ) {
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that._close();
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return;
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}
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if ( ( that.open && event.type == "mouseenter" ) || event.type == "click" ) {
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that._open( event, menu );
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}
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})
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.bind( "keydown", function( event ) {
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switch ( event.keyCode ) {
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case $.ui.keyCode.SPACE:
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case $.ui.keyCode.UP:
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case $.ui.keyCode.DOWN:
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that._open( event, $( this ).next() );
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event.preventDefault();
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break;
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case $.ui.keyCode.LEFT:
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that._prev( event, $( this ) );
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event.preventDefault();
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break;
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case $.ui.keyCode.RIGHT:
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that._next( event, $( this ) );
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event.preventDefault();
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break;
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}
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})
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.addClass( "ui-button ui-widget ui-button-text-only ui-menubar-link" )
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.attr( "role", "menuitem" )
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.attr( "aria-haspopup", "true" )
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.wrapInner( "<span class='ui-button-text'></span>" );
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// TODO review if these options are a good choice, maybe they can be merged
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if ( that.options.menuIcon ) {
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input.addClass( "ui-state-default" ).append( "<span class='ui-button-icon-secondary ui-icon ui-icon-triangle-1-s'></span>" );
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input.removeClass( "ui-button-text-only" ).addClass( "ui-button-text-icon-secondary" );
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}
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if ( !that.options.buttons ) {
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// TODO ui-menubar-link is added above, not needed here?
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input.addClass( "ui-menubar-link" ).removeClass( "ui-state-default" );
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};
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});
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that._bind( {
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keydown: function( event ) {
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if ( event.keyCode == $.ui.keyCode.ESCAPE && that.active && that.active.menu( "left", event ) !== true ) {
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var active = that.active;
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that.active.blur();
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that._close( event );
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active.prev().focus();
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}
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},
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focusin: function( event ) {
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clearTimeout( that.closeTimer );
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},
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focusout: function( event ) {
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that.closeTimer = setTimeout( function() {
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that._close( event );
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}, 100);
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}
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});
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},
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_destroy : function() {
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var items = this.element.children( "li" )
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.removeClass( "ui-menubar-item" )
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.removeAttr( "role", "presentation" )
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.children( "button, a" );
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this.element
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.removeClass( "ui-menubar ui-widget-header ui-helper-clearfix" )
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.removeAttr( "role", "menubar" )
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.unbind( ".menubar" );
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items
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.unbind( ".menubar" )
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.removeClass( "ui-button ui-widget ui-button-text-only ui-menubar-link ui-state-default" )
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.removeAttr( "role", "menuitem" )
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.removeAttr( "aria-haspopup", "true" )
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// TODO unwrap?
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.children( "span.ui-button-text" ).each(function( i, e ) {
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var item = $( this );
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item.parent().html( item.html() );
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})
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.end()
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.children( ".ui-icon" ).remove();
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this.element.find( ":ui-menu" )
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.menu( "destroy" )
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.show()
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.removeAttr( "aria-hidden", "true" )
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.removeAttr( "aria-expanded", "false" )
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.removeAttr( "tabindex" )
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.unbind( ".menubar" );
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},
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_close: function() {
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if ( !this.active || !this.active.length )
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return;
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this.active
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.menu( "closeAll" )
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.hide()
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.attr( "aria-hidden", "true" )
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.attr( "aria-expanded", "false" );
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this.active
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.prev()
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.removeClass( "ui-state-active" )
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.removeAttr( "tabIndex" );
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this.active = null;
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this.open = false;
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},
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_open: function( event, menu ) {
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// on a single-button menubar, ignore reopening the same menu
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if ( this.active && this.active[0] == menu[0] ) {
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return;
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}
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// TODO refactor, almost the same as _close above, but don't remove tabIndex
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if ( this.active ) {
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this.active
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.menu( "closeAll" )
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.hide()
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.attr( "aria-hidden", "true" )
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.attr( "aria-expanded", "false" );
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this.active
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.prev()
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.removeClass( "ui-state-active" );
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}
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// set tabIndex -1 to have the button skipped on shift-tab when menu is open (it gets focus)
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var button = menu.prev().addClass( "ui-state-active" ).attr( "tabIndex", -1 );
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this.active = menu
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.show()
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.position( {
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my: "left top",
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at: "left bottom",
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of: button
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})
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.removeAttr( "aria-hidden" )
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.attr( "aria-expanded", "true" )
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.menu("focus", event, menu.children( "li" ).first() )
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// TODO need a comment here why both events are triggered
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.focus()
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.focusin();
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this.open = true;
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},
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// TODO refactor this and the next three methods
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_prev: function( event, button ) {
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button.attr( "tabIndex", -1 );
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var prev = button.parent().prevAll( "li" ).children( ".ui-button" ).eq( 0 );
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if ( prev.length ) {
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prev.removeAttr( "tabIndex" )[0].focus();
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} else {
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var lastItem = this.element.children( "li:last" ).children( ".ui-button:last" );
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lastItem.removeAttr( "tabIndex" )[0].focus();
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}
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},
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_next: function( event, button ) {
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button.attr( "tabIndex", -1 );
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var next = button.parent().nextAll( "li" ).children( ".ui-button" ).eq( 0 );
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if ( next.length ) {
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next.removeAttr( "tabIndex")[0].focus();
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} else {
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var firstItem = this.element.children( "li:first" ).children( ".ui-button:first" );
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firstItem.removeAttr( "tabIndex" )[0].focus();
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}
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},
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// TODO rename to parent
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_left: function( event ) {
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var prev = this.active.parent().prevAll( "li:eq(0)" ).children( ".ui-menu" ).eq( 0 );
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if ( prev.length ) {
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this._open( event, prev );
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} else {
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var lastItem = this.element.children( "li:last" ).children( ".ui-menu:first" );
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this._open( event, lastItem );
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}
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},
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// TODO rename to child (or something like that)
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_right: function( event ) {
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var next = this.active.parent().nextAll( "li:eq(0)" ).children( ".ui-menu" ).eq( 0 );
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if ( next.length ) {
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this._open( event, next );
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} else {
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var firstItem = this.element.children( "li:first" ).children( ".ui-menu:first" );
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this._open( event, firstItem );
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}
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}
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});
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}( jQuery ));
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