mirror of
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537 lines
12 KiB
JavaScript
537 lines
12 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 2014 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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return $.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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width: null,
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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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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 that = this,
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tabindex = this.element.attr( "tabindex" );
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// Associate existing label with the new button
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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 element
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this.element.hide();
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// Create button
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this.button = $( "<span>", {
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"class": "ui-selectmenu-button ui-widget ui-state-default ui-corner-all",
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tabindex: tabindex || this.options.disabled ? -1 : 0,
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id: this.ids.button,
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role: "combobox",
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"aria-expanded": "false",
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"aria-autocomplete": "list",
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"aria-owns": this.ids.menu,
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"aria-haspopup": "true"
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})
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.insertAfter( this.element );
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$( "<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._setOption( "width", this.options.width );
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this._on( this.button, this._buttonEvents );
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this.button.one( "focusin", function() {
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// Delay rendering the menu items until the button receives focus
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that._refreshMenu();
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});
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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 that = this;
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// Create menu
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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 ui-front"
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})
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.append( this.menu )
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.appendTo( this._appendTo() );
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// Initialize menu widget
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this.menuInstance = this.menu.menu({
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role: "listbox",
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select: function( event, ui ) {
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event.preventDefault();
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that._select( ui.item.data( "ui-selectmenu-item" ), event );
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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.focusIndex != null && 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",
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that.menuItems.eq( item.index ).attr( "id" ) );
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}
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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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// TODO: Can we make this cleaner?
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// If not, at least update the comment to say what we're removing
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// Unbind uneeded menu events
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this.menuInstance._off( this.menu, "mouseleave" );
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// Cancel the menu's collapseAll on document click
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this.menuInstance._closeOnDocumentClick = function() {
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return false;
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};
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this.menuInstance._isDivider = function() {
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return false;
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};
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},
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refresh: function() {
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this._refreshMenu();
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this._setText( this.buttonText, this._getSelectedItem().text() );
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this._setOption( "width", this.options.width );
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},
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_refreshMenu: 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.menuInstance.refresh();
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this.menuItems = this.menu.find( "li" ).not( ".ui-selectmenu-optgroup" );
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item = this._getSelectedItem();
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// Update the menu to have the correct item focused
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this.menuInstance.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.prop( "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 is the first time the menu is being opened, render the items
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if ( !this.menuItems ) {
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this._refreshMenu();
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} else {
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// TODO: Why is this necessary?
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// Shouldn't the underlying menu always have accurate state?
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this.menu.find( ".ui-state-focus" ).removeClass( "ui-state-focus" );
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this.menuInstance.focus( null, this._getSelectedItem() );
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this.menuItems.eq( this.element[ 0 ].selectedIndex ).addClass( "ui-state-active" );
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}
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this.isOpen = true;
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this._toggleAttr();
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this._resizeMenu();
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this._position();
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this._on( this.document, this._documentClick );
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this._trigger( "open", event );
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},
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_position: function() {
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this.menuWrap.position( $.extend( { of: this.button }, this.options.position ) );
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},
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close: function( event ) {
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if ( !this.isOpen ) {
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return;
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}
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this.isOpen = false;
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this._toggleAttr();
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// Check if we have an item to select
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if ( this.menuItems ) {
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this.menuInstance.active = this._getSelectedItem();
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}
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this._off( this.document );
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this._trigger( "close", event );
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},
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widget: function() {
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return this.button;
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},
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menuWidget: function() {
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return this.menu;
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},
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_renderMenu: function( ul, items ) {
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var that = this,
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currentOptgroup = "";
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$.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 ui-menu-divider" +
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( item.element.parent( "optgroup" ).attr( "disabled" ) ?
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" ui-state-disabled" :
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"" ),
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text: item.optgroup
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})
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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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if ( item.disabled ) {
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li.addClass( "ui-state-disabled" );
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}
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this._setText( li, item.label );
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return li.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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var filter = ".ui-menu-item",
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item, next;
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if ( this.isOpen ) {
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item = this.menuItems.eq( this.focusIndex );
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} else {
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item = this.menuItems.eq( this.element[ 0 ].selectedIndex );
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filter += ":not(.ui-state-disabled)";
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}
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if ( direction === "first" || direction === "last" ) {
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next = item[ direction === "first" ? "prevAll" : "nextAll" ]( filter ).eq( -1 );
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} else {
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next = item[ direction + "All" ]( filter ).eq( 0 );
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}
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if ( next.length ) {
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this.menu.menu( "focus", event, next );
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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 );
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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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mousedown: function( event ) {
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if ( this.isOpen && !$( event.target ).closest( ".ui-selectmenu-menu, #" + 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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click: "_toggle",
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keydown: function( event ) {
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var preventDefault = 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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this.close( event );
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preventDefault = 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._selectMenu( 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( "prev", 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._selectMenu( 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( "prev", 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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preventDefault = false;
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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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},
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_selectMenu: function( event ) {
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if ( !this.menuItems.eq( this.focusIndex ).hasClass( "ui-state-disabled" ) ) {
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this.menuInstance.select( event );
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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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this.close( event );
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},
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_setAria: function( item ) {
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var id = this.menuItems.eq( item.index ).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.menuInstance.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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this.element.prop( "disabled", value );
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if ( value ) {
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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.button.attr( "tabindex", 0 );
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}
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}
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if ( key === "width" ) {
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if ( !value ) {
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value = this.element.outerWidth();
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}
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this.button.outerWidth( value );
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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 || !element[ 0 ] ) {
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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
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.toggleClass( "ui-corner-top", this.isOpen )
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.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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_resizeMenu: function() {
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this.menu.outerWidth( Math.max(
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this.button.outerWidth(),
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// IE10 wraps long text (possibly a rounding bug)
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// so we add 1px to avoid the wrapping
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this.menu.width( "" ).outerWidth() + 1
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) );
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},
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_getCreateOptions: function() {
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return { disabled: this.element.prop( "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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