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479 lines
11 KiB
JavaScript
479 lines
11 KiB
JavaScript
/*!
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* jQuery UI Selectmenu @VERSION
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* http://jqueryui.com
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*
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* Copyright 2013 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://api.jqueryui.com/selectmenu
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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( $, undefined ) {
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$.widget( "ui.selectmenu", {
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version: "@VERSION",
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defaultElement: "<select>",
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options: {
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appendTo: null,
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icons: {
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button: "ui-icon-triangle-1-s"
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},
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position: {
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my: "left top",
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at: "left bottom",
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collision: "none"
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},
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// callbacks
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change: null,
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close: null,
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focus: null,
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open: null,
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select: null
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},
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_create: function() {
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var selectmenuId = this.element.uniqueId().attr( "id" );
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this.ids = {
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element: selectmenuId,
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button: selectmenuId + "-button",
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menu: selectmenuId + "-menu"
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};
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this._drawButton();
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this._drawMenu();
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this._on( document, this._documentClick );
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if ( this.options.disabled ) {
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this.disable();
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}
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},
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_drawButton: function() {
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var tabindex = this.element.attr( "tabindex" );
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// Fix existing label
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this.label = $( "label[for='" + this.ids.element + "']" ).attr( "for", this.ids.button );
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this._on( this.label, {
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click: function( event ) {
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this.button.focus();
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event.preventDefault();
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}
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});
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// Hide original select tag
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this.element.hide();
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// Create button
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this.button = $( "<span>", {
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"class": "ui-selectmenu-button ui-widget ui-state-default ui-corner-all",
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tabindex: tabindex || this.options.disabled ? -1 : 0,
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id: this.ids.button,
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width: this.element.outerWidth(),
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role: "combobox",
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"aria-expanded": "false",
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"aria-autocomplete": "list",
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"aria-owns": this.ids.menu,
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"aria-haspopup": "true"
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})
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.insertAfter( this.element );
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$( "<span>", {
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"class": "ui-icon " + this.options.icons.button
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}).prependTo( this.button );
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this.buttonText = $( "<span>", {
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"class": "ui-selectmenu-text"
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})
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.appendTo( this.button );
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this._setText( this.buttonText, this.element.find( "option:selected" ).text() );
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this._on( this.button, this._buttonEvents );
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this._hoverable( this.button );
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this._focusable( this.button );
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},
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_drawMenu: function() {
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var menuInstance,
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that = this;
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// Create menu portion, append to body
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this.menu = $( "<ul>", {
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"aria-hidden": "true",
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"aria-labelledby": this.ids.button,
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id: this.ids.menu
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});
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// Wrap menu
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this.menuWrap = $( "<div>", {
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"class": "ui-selectmenu-menu",
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outerWidth: this.button.outerWidth()
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})
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.append( this.menu )
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.appendTo( this._appendTo() );
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// Init menu widget
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menuInstance = this.menu.menu({
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select: function( event, ui ) {
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var item = ui.item.data( "ui-selectmenu-item" );
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that._select( item, event );
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if ( that.isOpen ) {
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event.preventDefault();
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that.close( event );
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}
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},
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focus: function( event, ui ) {
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var item = ui.item.data( "ui-selectmenu-item" );
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// prevent inital focus from firing and checks if its a newly focused item
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if ( !that.isOpen && that.focusIndex !== undefined && item.index !== that.focusIndex ) {
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that._trigger( "focus", event, { item: item } );
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if ( !that.isOpen ) {
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that._select( item, event );
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}
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}
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that.focusIndex = item.index;
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that.button.attr( "aria-activedescendant", that.menuItems.eq( item.index ).attr( "id" ) );
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},
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role: "listbox"
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})
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.menu( "instance" );
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// adjust menu styles to dropdown
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this.menu.addClass( "ui-corner-bottom" ).removeClass( "ui-corner-all" );
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// Make sure focus stays on selected item
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menuInstance.delay = 999999999;
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// Unbind uneeded Menu events
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menuInstance._off( this.menu, "mouseleave" );
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},
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refresh: function() {
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this.menu.empty();
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var item,
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options = this.element.find( "option" );
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if ( !options.length ) {
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return;
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}
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this._readOptions( options );
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this._renderMenu( this.menu, this.items );
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this.menu.menu( "refresh" );
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this.menuItems = this.menu.find( "li" ).not( ".ui-selectmenu-optgroup" ).find( "a" );
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item = this._getSelectedItem();
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// Make sure menu is selected item aware
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this.menu.menu( "focus", null, item );
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this._setAria( item.data( "ui-selectmenu-item" ) );
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// Set disabled state
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this._setOption( "disabled", !!this.element.attr( "disabled" ) );
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},
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open: function( event ) {
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if ( this.options.disabled ) {
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return;
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}
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if ( !this.menuItems ) {
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this.refresh();
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}
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this.isOpen = true;
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this._toggleAttr();
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this.menuWrap.position( $.extend( { of: this.button }, this.options.position ) );
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this._trigger( "open", event );
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},
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close: function( event ) {
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if ( !this.isOpen ) {
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return;
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}
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this.isOpen = false;
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this._toggleAttr();
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// Check if we have an item to select
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if ( this.menuItems ) {
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this.menu.menu( "focus", null, this._getSelectedItem() );
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}
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this._trigger( "close", event );
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},
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widget: function() {
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return this.button;
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},
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menuWidget: function() {
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return this.menu;
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},
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_renderMenu: function( ul, items ) {
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var that = this,
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currentOptgroup = "";
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$.each( items, function( index, item ) {
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if ( item.optgroup !== currentOptgroup ) {
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$( "<li>", {
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"class": "ui-selectmenu-optgroup" + ( item.element.parent( "optgroup" ).attr( "disabled" ) ? " ui-state-disabled" : "" ),
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text: item.optgroup
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}).appendTo( ul );
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currentOptgroup = item.optgroup;
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}
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that._renderItemData( ul, item );
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});
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},
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_renderItemData: function( ul, item ) {
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return this._renderItem( ul, item ).data( "ui-selectmenu-item", item );
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},
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_renderItem: function( ul, item ) {
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var li = $( "<li>" ),
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a = $( "<a>", { href: "#" });
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if ( item.disabled ) {
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li.addClass( "ui-state-disabled" );
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}
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this._setText( a, item.label );
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return li.append( a ).appendTo( ul );
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},
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_setText: function( element, value ) {
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if ( value ) {
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element.text( value );
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} else {
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element.html( " " );
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}
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},
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_move: function( direction, event ) {
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if ( direction === "first" || direction === "last" ) {
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// Set focus manually for first or last item
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this.menu.menu( "focus", event, this.menuItems[ direction ]() );
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} else {
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// Move to and focus next or prev item
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this.menu.menu( direction, event );
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}
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},
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_getSelectedItem: function() {
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return this.menuItems.eq( this.element[ 0 ].selectedIndex ).parent( "li" );
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},
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_toggle: function( event ) {
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if ( this.isOpen ) {
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this.close( event );
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} else {
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this.open( event );
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}
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},
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_documentClick: {
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click: function( event ) {
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if ( this.isOpen && !$( event.target ).closest( "li.ui-state-disabled, li.ui-selectmenu-optgroup, #" + this.ids.button ).length ) {
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this.close( event );
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}
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}
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},
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_buttonEvents: {
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focus: function() {
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// Init Menu on first focus
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this.refresh();
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// Reset focus class as its removed by ui.widget._setOption
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this.button.addClass( "ui-state-focus" );
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this._off( this.button, "focus" );
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},
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click: function( event ) {
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this._toggle( event );
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event.preventDefault();
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},
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keydown: function( event ) {
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var prevDef = true;
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switch ( event.keyCode ) {
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case $.ui.keyCode.TAB:
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case $.ui.keyCode.ESCAPE:
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if ( this.isOpen ) {
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this.close( event );
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}
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prevDef = false;
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break;
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case $.ui.keyCode.ENTER:
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if ( this.isOpen ) {
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this.menu.menu( "select", event );
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}
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break;
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case $.ui.keyCode.UP:
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if ( event.altKey ) {
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this._toggle( event );
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} else {
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this._move( "previous", event );
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}
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break;
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case $.ui.keyCode.DOWN:
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if ( event.altKey ) {
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this._toggle( event );
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} else {
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this._move( "next", event );
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}
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break;
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case $.ui.keyCode.SPACE:
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if ( this.isOpen ) {
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this.menu.menu( "select", event );
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} else {
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this._toggle( event );
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}
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break;
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case $.ui.keyCode.LEFT:
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this._move( "previous", event );
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break;
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case $.ui.keyCode.RIGHT:
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this._move( "next", event );
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break;
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case $.ui.keyCode.HOME:
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case $.ui.keyCode.PAGE_UP:
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this._move( "first", event );
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break;
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case $.ui.keyCode.END:
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case $.ui.keyCode.PAGE_DOWN:
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this._move( "last", event );
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break;
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default:
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this.menu.trigger( event );
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prevDef = false;
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}
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if ( prevDef ) {
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event.preventDefault();
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}
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}
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},
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_select: function( item, event ) {
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var oldIndex = this.element[ 0 ].selectedIndex;
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// Change native select element
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this.element[ 0 ].selectedIndex = item.index;
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this._setText( this.buttonText, item.label );
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this._setAria( item );
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this._trigger( "select", event, { item: item } );
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if ( item.index !== oldIndex ) {
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this._trigger( "change", event, { item: item } );
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}
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},
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_setAria: function( item ) {
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var link = this.menuItems.eq( item.index ),
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id = link.attr( "id" );
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this.button.attr({
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"aria-labelledby": id,
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"aria-activedescendant": id
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});
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this.menu.attr( "aria-activedescendant", id );
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},
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_setOption: function( key, value ) {
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if ( key === "icons" ) {
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this.button.find( "span.ui-icon" )
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.removeClass( this.options.icons.button )
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.addClass( value.button );
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}
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this._super( key, value );
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if ( key === "appendTo" ) {
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this.menuWrap.appendTo( this._appendTo() );
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}
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if ( key === "disabled" ) {
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this.menu.menu( "option", "disabled", value );
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this.button
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.toggleClass( "ui-state-disabled", !!value )
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.attr( "aria-disabled", value );
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if ( value ) {
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this.element.attr( "disabled", "disabled" );
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this.button.attr( "tabindex", -1 );
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this.close();
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} else {
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this.element.removeAttr( "disabled" );
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this.button.attr( "tabindex", 0 );
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}
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}
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},
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_appendTo: function() {
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var element = this.options.appendTo;
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if ( element ) {
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element = element.jquery || element.nodeType ?
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$( element ) :
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this.document.find( element ).eq( 0 );
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}
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if ( !element ) {
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element = this.element.closest( ".ui-front" );
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}
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if ( !element.length ) {
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element = this.document[ 0 ].body;
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}
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return element;
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},
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_toggleAttr: function(){
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this.button.toggleClass( "ui-corner-top", this.isOpen ).toggleClass( "ui-corner-all", !this.isOpen );
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this.menuWrap.toggleClass( "ui-selectmenu-open", this.isOpen );
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this.menu.attr( "aria-hidden", !this.isOpen);
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this.button.attr( "aria-expanded", this.isOpen);
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},
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_getCreateOptions: function() {
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return { disabled: !!this.element.attr( "disabled" ) };
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},
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_readOptions: function( options ) {
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var data = [];
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options.each( function( index, item ) {
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var option = $( item ),
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optgroup = option.parent( "optgroup" );
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data.push({
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element: option,
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index: index,
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value: option.attr( "value" ),
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label: option.text(),
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optgroup: optgroup.attr( "label" ) || "",
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disabled: optgroup.attr( "disabled" ) || option.attr( "disabled" )
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});
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});
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this.items = data;
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},
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_destroy: function() {
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this.menuWrap.remove();
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this.button.remove();
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this.element.show();
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this.element.removeUniqueId();
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this.label.attr( "for", this.ids.element );
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}
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});
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}( jQuery ));
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