mirror of
https://github.com/jquery/jquery-ui.git
synced 2024-11-21 11:04:24 +00:00
598 lines
15 KiB
JavaScript
598 lines
15 KiB
JavaScript
/*!
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* jQuery UI Menu @VERSION
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* http://jqueryui.com
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*
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* Copyright 2012 jQuery Foundation and other contributors
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* Released under the MIT license.
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* http://jquery.org/license
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*
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* http://docs.jquery.com/UI/Menu
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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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*/
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(function( $, undefined ) {
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var mouseHandled = false;
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$.widget( "ui.menu", {
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version: "@VERSION",
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defaultElement: "<ul>",
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delay: 300,
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options: {
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icons: {
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submenu: "ui-icon-carat-1-e"
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},
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menus: "ul",
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position: {
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my: "left top",
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at: "right top"
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},
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role: "menu",
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// callbacks
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blur: null,
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focus: null,
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select: null
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},
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_create: function() {
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this.activeMenu = this.element;
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this.element
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.uniqueId()
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.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
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.toggleClass( "ui-menu-icons", !!this.element.find( ".ui-icon" ).length )
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.attr({
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role: this.options.role,
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tabIndex: 0
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})
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// need to catch all clicks on disabled menu
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// not possible through _on
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.bind( "click" + this.eventNamespace, $.proxy(function( event ) {
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if ( this.options.disabled ) {
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event.preventDefault();
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}
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}, this ));
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if ( this.options.disabled ) {
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this.element
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.addClass( "ui-state-disabled" )
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.attr( "aria-disabled", "true" );
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}
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this._on({
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// Prevent focus from sticking to links inside menu after clicking
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// them (focus should always stay on UL during navigation).
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"mousedown .ui-menu-item > a": function( event ) {
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event.preventDefault();
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},
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"click .ui-state-disabled > a": function( event ) {
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event.preventDefault();
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},
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"click .ui-menu-item:has(a)": function( event ) {
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var target = $( event.target );
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if ( !mouseHandled && target.closest( ".ui-menu-item" ).not( ".ui-state-disabled" ).length ) {
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mouseHandled = true;
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this.select( event );
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// Open submenu on click
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if ( this.element.has( ".ui-menu" ).length ) {
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this.expand( event );
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} else if ( !this.element.is(":focus") ) {
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// Redirect focus to the menu
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this.element.focus();
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}
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}
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},
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"mouseenter .ui-menu-item": function( event ) {
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var target = $( event.currentTarget );
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// Remove ui-state-active class from siblings of the newly focused menu item
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// to avoid a jump caused by adjacent elements both having a class with a border
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target.siblings().children( ".ui-state-active" ).removeClass( "ui-state-active" );
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this.focus( event, target );
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},
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mouseleave: "collapseAll",
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"mouseleave .ui-menu": "collapseAll",
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focus: function( event ) {
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// If there's already an active item, keep it active
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// If not, activate the first item
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var item = this.active || this.element.children( ".ui-menu-item" ).eq( 0 );
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this.focus( event, item );
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},
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blur: function( event ) {
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this._delay(function() {
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if ( !$.contains( this.element[0], this.document[0].activeElement ) ) {
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this.collapseAll( event );
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}
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});
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},
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keydown: "_keydown"
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});
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this.refresh();
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// Clicks outside of a menu collapse any open menus
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this._on( this.document, {
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click: function( event ) {
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if ( !$( event.target ).closest( ".ui-menu" ).length ) {
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this.collapseAll( event );
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}
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// Reset the mouseHandled flag
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mouseHandled = false;
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}
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});
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},
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_destroy: function() {
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// Destroy (sub)menus
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this.element
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.removeAttr( "aria-activedescendant" )
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.find( ".ui-menu" ).andSelf()
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.removeClass( "ui-menu ui-widget ui-widget-content ui-corner-all ui-menu-icons" )
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.removeAttr( "role" )
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.removeAttr( "tabIndex" )
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.removeAttr( "aria-labelledby" )
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.removeAttr( "aria-expanded" )
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.removeAttr( "aria-hidden" )
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.removeAttr( "aria-disabled" )
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.removeUniqueId()
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.show();
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// Destroy menu items
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this.element.find( ".ui-menu-item" )
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.removeClass( "ui-menu-item" )
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.removeAttr( "role" )
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.removeAttr( "aria-disabled" )
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.children( "a" )
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.removeUniqueId()
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.removeClass( "ui-corner-all ui-state-hover" )
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.removeAttr( "tabIndex" )
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.removeAttr( "role" )
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.removeAttr( "aria-haspopup" )
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.children().each( function() {
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var elem = $( this );
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if ( elem.data( "ui-menu-submenu-carat" ) ) {
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elem.remove();
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}
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});
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// Destroy menu dividers
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this.element.find( ".ui-menu-divider" ).removeClass( "ui-menu-divider ui-widget-content" );
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},
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_keydown: function( event ) {
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var match, prev, character, skip, regex,
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preventDefault = true;
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function escape( value ) {
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return value.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" );
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}
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switch ( event.keyCode ) {
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case $.ui.keyCode.PAGE_UP:
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this.previousPage( event );
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break;
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case $.ui.keyCode.PAGE_DOWN:
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this.nextPage( event );
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break;
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case $.ui.keyCode.HOME:
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this._move( "first", "first", event );
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break;
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case $.ui.keyCode.END:
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this._move( "last", "last", event );
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break;
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case $.ui.keyCode.UP:
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this.previous( event );
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break;
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case $.ui.keyCode.DOWN:
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this.next( event );
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break;
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case $.ui.keyCode.LEFT:
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this.collapse( event );
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break;
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case $.ui.keyCode.RIGHT:
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if ( !this.active.is( ".ui-state-disabled" ) ) {
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this.expand( event );
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}
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break;
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case $.ui.keyCode.ENTER:
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case $.ui.keyCode.SPACE:
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this._activate( event );
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break;
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case $.ui.keyCode.ESCAPE:
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this.collapse( event );
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break;
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default:
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preventDefault = false;
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prev = this.previousFilter || "";
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character = String.fromCharCode( event.keyCode );
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skip = false;
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clearTimeout( this.filterTimer );
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if ( character === prev ) {
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skip = true;
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} else {
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character = prev + character;
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}
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regex = new RegExp( "^" + escape( character ), "i" );
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match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
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return regex.test( $( this ).children( "a" ).text() );
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});
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match = skip && match.index( this.active.next() ) !== -1 ?
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this.active.nextAll( ".ui-menu-item" ) :
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match;
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// If no matches on the current filter, reset to the last character pressed
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// to move down the menu to the first item that starts with that character
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if ( !match.length ) {
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character = String.fromCharCode( event.keyCode );
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regex = new RegExp( "^" + escape( character ), "i" );
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match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
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return regex.test( $( this ).children( "a" ).text() );
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});
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}
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if ( match.length ) {
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this.focus( event, match );
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if ( match.length > 1 ) {
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this.previousFilter = character;
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this.filterTimer = this._delay(function() {
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delete this.previousFilter;
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}, 1000 );
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} else {
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delete this.previousFilter;
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}
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} else {
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delete this.previousFilter;
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}
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}
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if ( preventDefault ) {
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event.preventDefault();
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}
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},
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_activate: function( event ) {
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if ( !this.active.is( ".ui-state-disabled" ) ) {
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if ( this.active.children( "a[aria-haspopup='true']" ).length ) {
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this.expand( event );
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} else {
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this.select( event );
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}
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}
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},
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refresh: function() {
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// Initialize nested menus
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var menus,
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icon = this.options.icons.submenu,
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submenus = this.element.find( this.options.menus + ":not(.ui-menu)" )
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.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
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.hide()
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.attr({
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role: this.options.role,
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"aria-hidden": "true",
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"aria-expanded": "false"
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});
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// Don't refresh list items that are already adapted
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menus = submenus.add( this.element );
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menus.children( ":not(.ui-menu-item):has(a)" )
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.addClass( "ui-menu-item" )
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.attr( "role", "presentation" )
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.children( "a" )
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.uniqueId()
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.addClass( "ui-corner-all" )
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.attr({
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tabIndex: -1,
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role: this._itemRole()
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});
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// Initialize unlinked menu-items containing spaces and/or dashes only as dividers
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menus.children( ":not(.ui-menu-item)" ).each(function() {
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var item = $( this );
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// hyphen, em dash, en dash
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if ( !/[^\-—–\s]/.test( item.text() ) ) {
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item.addClass( "ui-widget-content ui-menu-divider" );
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}
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});
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// Add aria-disabled attribute to any disabled menu item
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menus.children( ".ui-state-disabled" ).attr( "aria-disabled", "true" );
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submenus.each(function() {
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var menu = $( this ),
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item = menu.prev( "a" ),
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submenuCarat = $( "<span>" )
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.addClass( "ui-menu-icon ui-icon " + icon )
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.data( "ui-menu-submenu-carat", true );
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item
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.attr( "aria-haspopup", "true" )
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.prepend( submenuCarat );
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menu.attr( "aria-labelledby", item.attr( "id" ) );
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});
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},
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_itemRole: function() {
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return {
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menu: "menuitem",
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listbox: "option"
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}[ this.options.role ];
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},
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focus: function( event, item ) {
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var nested, focused;
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this.blur( event, event && event.type === "focus" );
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this._scrollIntoView( item );
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this.active = item.first();
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focused = this.active.children( "a" ).addClass( "ui-state-focus" );
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// Only update aria-activedescendant if there's a role
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// otherwise we assume focus is managed elsewhere
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if ( this.options.role ) {
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this.element.attr( "aria-activedescendant", focused.attr( "id" ) );
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}
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// Highlight active parent menu item, if any
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this.active
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.parent()
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.closest( ".ui-menu-item" )
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.children( "a:first" )
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.addClass( "ui-state-active" );
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if ( event && event.type === "keydown" ) {
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this._close();
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} else {
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this.timer = this._delay(function() {
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this._close();
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}, this.delay );
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}
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nested = item.children( ".ui-menu" );
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if ( nested.length && ( /^mouse/.test( event.type ) ) ) {
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this._startOpening(nested);
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}
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this.activeMenu = item.parent();
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this._trigger( "focus", event, { item: item } );
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},
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_scrollIntoView: function( item ) {
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var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight;
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if ( this._hasScroll() ) {
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borderTop = parseFloat( $.css( this.activeMenu[0], "borderTopWidth" ) ) || 0;
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paddingTop = parseFloat( $.css( this.activeMenu[0], "paddingTop" ) ) || 0;
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offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop;
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scroll = this.activeMenu.scrollTop();
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elementHeight = this.activeMenu.height();
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itemHeight = item.height();
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if ( offset < 0 ) {
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this.activeMenu.scrollTop( scroll + offset );
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} else if ( offset + itemHeight > elementHeight ) {
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this.activeMenu.scrollTop( scroll + offset - elementHeight + itemHeight );
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}
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}
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},
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blur: function( event, fromFocus ) {
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if ( !fromFocus ) {
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clearTimeout( this.timer );
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}
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if ( !this.active ) {
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return;
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}
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this.active.children( "a" ).removeClass( "ui-state-focus" );
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this.active = null;
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this._trigger( "blur", event, { item: this.active } );
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},
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_startOpening: function( submenu ) {
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clearTimeout( this.timer );
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// Don't open if already open fixes a Firefox bug that caused a .5 pixel
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// shift in the submenu position when mousing over the carat icon
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if ( submenu.attr( "aria-hidden" ) !== "true" ) {
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return;
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}
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this.timer = this._delay(function() {
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this._close();
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this._open( submenu );
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}, this.delay );
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},
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_open: function( submenu ) {
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var position = $.extend({
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of: this.active
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}, this.options.position );
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clearTimeout( this.timer );
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this.element.find( ".ui-menu" ).not( submenu.parents( ".ui-menu" ) )
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.hide()
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.attr( "aria-hidden", "true" );
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submenu
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.show()
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.removeAttr( "aria-hidden" )
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.attr( "aria-expanded", "true" )
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.position( position );
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},
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collapseAll: function( event, all ) {
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clearTimeout( this.timer );
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this.timer = this._delay(function() {
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// If we were passed an event, look for the submenu that contains the event
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var currentMenu = all ? this.element :
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$( event && event.target ).closest( this.element.find( ".ui-menu" ) );
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// If we found no valid submenu ancestor, use the main menu to close all sub menus anyway
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if ( !currentMenu.length ) {
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currentMenu = this.element;
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}
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this._close( currentMenu );
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this.blur( event );
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this.activeMenu = currentMenu;
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}, this.delay );
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},
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// With no arguments, closes the currently active menu - if nothing is active
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// it closes all menus. If passed an argument, it will search for menus BELOW
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_close: function( startMenu ) {
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if ( !startMenu ) {
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startMenu = this.active ? this.active.parent() : this.element;
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}
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startMenu
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.find( ".ui-menu" )
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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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.end()
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.find( "a.ui-state-active" )
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.removeClass( "ui-state-active" );
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},
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collapse: function( event ) {
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var newItem = this.active &&
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this.active.parent().closest( ".ui-menu-item", this.element );
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if ( newItem && newItem.length ) {
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this._close();
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this.focus( event, newItem );
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}
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},
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expand: function( event ) {
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var newItem = this.active &&
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this.active
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.children( ".ui-menu " )
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.children( ".ui-menu-item" )
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.first();
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if ( newItem && newItem.length ) {
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this._open( newItem.parent() );
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// Delay so Firefox will not hide activedescendant change in expanding submenu from AT
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this._delay(function() {
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this.focus( event, newItem );
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});
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}
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},
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next: function( event ) {
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this._move( "next", "first", event );
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},
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previous: function( event ) {
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this._move( "prev", "last", event );
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},
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isFirstItem: function() {
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return this.active && !this.active.prevAll( ".ui-menu-item" ).length;
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},
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isLastItem: function() {
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return this.active && !this.active.nextAll( ".ui-menu-item" ).length;
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},
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_move: function( direction, filter, event ) {
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var next;
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if ( this.active ) {
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if ( direction === "first" || direction === "last" ) {
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next = this.active
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[ direction === "first" ? "prevAll" : "nextAll" ]( ".ui-menu-item" )
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.eq( -1 );
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} else {
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next = this.active
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[ direction + "All" ]( ".ui-menu-item" )
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.eq( 0 );
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}
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}
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if ( !next || !next.length || !this.active ) {
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next = this.activeMenu.children( ".ui-menu-item" )[ filter ]();
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}
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this.focus( event, next );
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},
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nextPage: function( event ) {
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var item, base, height;
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if ( !this.active ) {
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this.next( event );
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return;
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}
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if ( this.isLastItem() ) {
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return;
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}
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if ( this._hasScroll() ) {
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base = this.active.offset().top;
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height = this.element.height();
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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.children( ".ui-menu-item" )
|
|
[ !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.children( ".ui-menu-item" ).first() );
|
|
}
|
|
},
|
|
|
|
_hasScroll: function() {
|
|
return this.element.outerHeight() < this.element.prop( "scrollHeight" );
|
|
},
|
|
|
|
select: function( event ) {
|
|
// Save active reference before collapseAll triggers blur
|
|
var ui = {
|
|
// Selecting a menu item removes the active item causing multiple clicks to be missing an item
|
|
item: this.active || $( event.target ).closest( ".ui-menu-item" )
|
|
};
|
|
if ( !ui.item.has( ".ui-menu" ).length ) {
|
|
this.collapseAll( event, true );
|
|
}
|
|
this._trigger( "select", event, ui );
|
|
}
|
|
});
|
|
|
|
}( jQuery ));
|