ref: master
public/javascripts/vendor/jquery-ui-1.10.4/development-bundle/ui/jquery.ui.menu.js
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/*! * jQuery UI Menu 1.10.4 * http://jqueryui.com * * Copyright 2014 jQuery Foundation and other contributors * Released under the MIT license. * http://jquery.org/license * * http://api.jqueryui.com/menu/ * * Depends: * jquery.ui.core.js * jquery.ui.widget.js * jquery.ui.position.js */ (function( $, undefined ) { $.widget( "ui.menu", { version: "1.10.4", defaultElement: "<ul>", delay: 300, options: { icons: { submenu: "ui-icon-carat-1-e" }, 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() .addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" ) .toggleClass( "ui-menu-icons", !!this.element.find( ".ui-icon" ).length ) .attr({ role: this.options.role, tabIndex: 0 }) // need to catch all clicks on disabled menu // not possible through _on .bind( "click" + this.eventNamespace, $.proxy(function( event ) { if ( this.options.disabled ) { event.preventDefault(); } }, this )); if ( this.options.disabled ) { this.element .addClass( "ui-state-disabled" ) .attr( "aria-disabled", "true" ); } 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 > a": function( event ) { event.preventDefault(); }, "click .ui-state-disabled > a": function( event ) { event.preventDefault(); }, "click .ui-menu-item:has(a)": function( event ) { var target = $( event.target ).closest( ".ui-menu-item" ); 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" ) && $( this.document[ 0 ].activeElement ).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 ) { var target = $( event.currentTarget ); // Remove ui-state-active class from siblings of the newly focused menu item // to avoid a jump caused by adjacent elements both having a class with a border target.siblings().children( ".ui-state-active" ).removeClass( "ui-state-active" ); this.focus( event, target ); }, mouseleave: "collapseAll", "mouseleave .ui-menu": "collapseAll", focus: function( event, keepActiveItem ) { // If there's already an active item, keep it active // If not, activate the first item var item = this.active || this.element.children( ".ui-menu-item" ).eq( 0 ); if ( !keepActiveItem ) { this.focus( event, item ); } }, blur: function( event ) { this._delay(function() { if ( !$.contains( this.element[0], this.document[0].activeElement ) ) { this.collapseAll( event ); } }); }, keydown: "_keydown" }); this.refresh(); // Clicks outside of a menu collapse any open menus this._on( this.document, { click: function( event ) { if ( !$( event.target ).closest( ".ui-menu" ).length ) { this.collapseAll( event ); } // Reset the mouseHandled flag this.mouseHandled = false; } }); }, _destroy: function() { // Destroy (sub)menus this.element .removeAttr( "aria-activedescendant" ) .find( ".ui-menu" ).addBack() .removeClass( "ui-menu ui-widget ui-widget-content ui-corner-all ui-menu-icons" ) .removeAttr( "role" ) .removeAttr( "tabIndex" ) .removeAttr( "aria-labelledby" ) .removeAttr( "aria-expanded" ) .removeAttr( "aria-hidden" ) .removeAttr( "aria-disabled" ) .removeUniqueId() .show(); // Destroy menu items this.element.find( ".ui-menu-item" ) .removeClass( "ui-menu-item" ) .removeAttr( "role" ) .removeAttr( "aria-disabled" ) .children( "a" ) .removeUniqueId() .removeClass( "ui-corner-all ui-state-hover" ) .removeAttr( "tabIndex" ) .removeAttr( "role" ) .removeAttr( "aria-haspopup" ) .children().each( function() { var elem = $( this ); if ( elem.data( "ui-menu-submenu-carat" ) ) { elem.remove(); } }); // Destroy menu dividers this.element.find( ".ui-menu-divider" ).removeClass( "ui-menu-divider ui-widget-content" ); }, _keydown: function( event ) { var match, prev, character, skip, regex, preventDefault = true; function escape( value ) { return value.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" ); } 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 || ""; character = String.fromCharCode( event.keyCode ); skip = false; clearTimeout( this.filterTimer ); if ( character === prev ) { skip = true; } else { character = prev + character; } regex = new RegExp( "^" + escape( character ), "i" ); match = this.activeMenu.children( ".ui-menu-item" ).filter(function() { return regex.test( $( this ).children( "a" ).text() ); }); 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 ); regex = new RegExp( "^" + escape( character ), "i" ); match = this.activeMenu.children( ".ui-menu-item" ).filter(function() { return regex.test( $( this ).children( "a" ).text() ); }); } if ( match.length ) { this.focus( event, match ); if ( match.length > 1 ) { this.previousFilter = character; this.filterTimer = this._delay(function() { delete this.previousFilter; }, 1000 ); } else { delete this.previousFilter; } } else { delete this.previousFilter; } } if ( preventDefault ) { event.preventDefault(); } }, _activate: function( event ) { if ( !this.active.is( ".ui-state-disabled" ) ) { if ( this.active.children( "a[aria-haspopup='true']" ).length ) { this.expand( event ); } else { this.select( event ); } } }, refresh: function() { var menus, icon = this.options.icons.submenu, submenus = this.element.find( this.options.menus ); this.element.toggleClass( "ui-menu-icons", !!this.element.find( ".ui-icon" ).length ); // Initialize nested menus submenus.filter( ":not(.ui-menu)" ) .addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" ) .hide() .attr({ role: this.options.role, "aria-hidden": "true", "aria-expanded": "false" }) .each(function() { var menu = $( this ), item = menu.prev( "a" ), submenuCarat = $( "<span>" ) .addClass( "ui-menu-icon ui-icon " + icon ) .data( "ui-menu-submenu-carat", true ); item .attr( "aria-haspopup", "true" ) .prepend( submenuCarat ); menu.attr( "aria-labelledby", item.attr( "id" ) ); }); menus = submenus.add( this.element ); // Don't refresh list items that are already adapted menus.children( ":not(.ui-menu-item):has(a)" ) .addClass( "ui-menu-item" ) .attr( "role", "presentation" ) .children( "a" ) .uniqueId() .addClass( "ui-corner-all" ) .attr({ tabIndex: -1, role: this._itemRole() }); // Initialize unlinked menu-items containing spaces and/or dashes only as dividers menus.children( ":not(.ui-menu-item)" ).each(function() { var item = $( this ); // hyphen, em dash, en dash if ( !/[^\-\u2014\u2013\s]/.test( item.text() ) ) { item.addClass( "ui-widget-content ui-menu-divider" ); } }); // Add aria-disabled attribute to any disabled menu item menus.children( ".ui-state-disabled" ).attr( "aria-disabled", "true" ); // If the active item has been removed, blur the menu if ( this.active && !$.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" ) { this.element.find( ".ui-menu-icon" ) .removeClass( this.options.icons.submenu ) .addClass( value.submenu ); } this._super( key, value ); }, focus: function( event, item ) { var nested, focused; this.blur( event, event && event.type === "focus" ); this._scrollIntoView( item ); this.active = item.first(); focused = this.active.children( "a" ).addClass( "ui-state-focus" ); // 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 this.active .parent() .closest( ".ui-menu-item" ) .children( "a:first" ) .addClass( "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.height(); 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.active.children( "a" ).removeClass( "ui-state-focus" ); this.active = null; this._trigger( "blur", event, { item: this.active } ); }, _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 carat 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 ); 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" ) .end() .find( "a.ui-state-active" ) .removeClass( "ui-state-active" ); }, 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 " ) .children( ".ui-menu-item" ) .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.children( ".ui-menu-item" )[ 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.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 ) { // 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 ); } }); }( jQuery )); |