mirror of
https://github.com/jquery/jquery-ui.git
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395 lines
10 KiB
JavaScript
395 lines
10 KiB
JavaScript
/*
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* jQuery UI Selectmenu @VERSION
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*
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* Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT or GPL Version 2 licenses.
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* http://jquery.org/license
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*
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* http://docs.jquery.com/UI/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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* jquery.ui.button.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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dropdown: true,
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iconWidth: 26,
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wrapperElement: "<div />",
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appendTo: "body",
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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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source: null,
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value: null,
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// callbacks
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open: null,
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focus: null,
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select: null,
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close: null
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// change: null
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},
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_create: function() {
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var self = this,
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options = this.options,
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tabindex = this.element.attr( 'tabindex' )
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// set a default id value, generate a new random one if not set by developer
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selectmenuId = self.element.attr( 'id' ) || 'ui-selectmenu-' + Math.random().toString( 16 ).slice( 2, 10 );
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// quick array of button and menu id's
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self.ids = [ selectmenuId + '-button', selectmenuId + '-menu' ];
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// get options
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self.items = self.element.find( 'option' );
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// set options
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options.value = self.element[0].value;
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options.disabled = ( self.element.attr( 'disabled' ) ) ? true : false;
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// catch click event of the label
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self.element.bind( 'click.selectmenu', function() {
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self.newelement.focus();
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return false;
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})
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.hide();
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// create button
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self.newelement = $( '<a />', {
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href: '#' + selectmenuId,
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tabindex: ( tabindex ? tabindex : self.element.attr( 'disabled' ) ? 1 : 0 ),
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id: self.ids[ 0 ],
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css: {
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width: self.element.width()
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},
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'aria-disabled': options.disabled,
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'aria-owns': self.ids[ 1 ],
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'aria-haspopup': true
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})
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.addClass( self.widgetBaseClass + '-button' )
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.button({
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label: self.items.eq( this.element[0].selectedIndex ).text(),
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icons: {
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primary: ( options.dropdown ? 'ui-icon-triangle-1-s' : 'ui-icon-triangle-2-n-s' )
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}
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});
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self.newelementWrap = $( options.wrapperElement )
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.append( self.newelement )
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.insertAfter( self.element );
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self.newelement.bind({
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'mousedown.selectmenu': function( event ) {
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self._toggle( event );
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return false;
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},
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'click.selectmenu': function() {
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return false;
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},
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'keydown.selectmenu': function( event ) {
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var ret = true;
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switch (event.keyCode) {
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case $.ui.keyCode.TAB:
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if ( self.opened ) self.close();
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break;
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case $.ui.keyCode.ENTER:
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if ( self.opened ) self.list.menu( "select", self._getSelectedItem() );
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ret = false;
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break;
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case $.ui.keyCode.SPACE:
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self._toggle(event);
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ret = false;
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break;
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case $.ui.keyCode.UP:
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if ( event.altKey ) {
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self._toggle( event );
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} else {
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self._move( "previous", event );
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}
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ret = false;
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break;
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case $.ui.keyCode.DOWN:
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if ( event.altKey ) {
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self._toggle( event );
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} else {
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self._move( "next", event );
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}
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ret = false;
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break;
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case $.ui.keyCode.LEFT:
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self._move( "previous", event );
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ret = false;
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break;
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case $.ui.keyCode.RIGHT:
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self._move( "next", event );
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ret = false;
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break;
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default:
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self.list.trigger( event );
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}
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return ret;
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}
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});
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// built menu
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self.refresh();
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// document click closes menu
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$( document ).bind( 'mousedown.selectmenu', function( event ) {
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if ( self.opened && !self.hover) {
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window.setTimeout( function() {
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self.close( event );
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}, 200 );
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}
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});
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},
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// TODO update the value option
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refresh: function() {
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var self = this,
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options = this.options;
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// create menu portion, append to body
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self.list = $( '<ul />', {
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'class': 'ui-widget ui-widget-content',
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'aria-hidden': true,
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'aria-labelledby': self.ids[0],
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role: 'listbox',
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id: self.ids[1]
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});
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self.listWrap = $( options.wrapperElement )
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.addClass( self.widgetBaseClass + '-menu' )
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.css( "width", ( options.dropdown ) ? self.element.width() : self.element.width() - options.iconWidth )
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.append( self.list )
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.appendTo( options.appendTo );
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self._initSource();
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self._renderMenu( self.list, options.source );
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self.list
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.data( 'element.selectelemenu', self.element )
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.menu({
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select: function( event, ui ) {
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var flag = false,
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item = ui.item.data( "item.selectmenu" );
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if ( item.index != self.element[0].selectedIndex ) flag = true;
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self._setSelected( event, item );
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item.element = self.items[ item.index ];
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self._trigger( "select", event, { item: item } );
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if ( flag ) self._trigger( "change", event, { item: item } );
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self.close( event, true);
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},
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focus: function( event, ui ) {
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self._trigger( "focus", event, { item: ui.item.data( "item.selectmenu" ) } );
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}
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})
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.bind({
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'mouseenter.selectelemenu': function() {
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self.hover = true;
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},
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'mouseleave .selectelemenu': function() {
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self.hover = false;
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}
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});
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// adjust ARIA
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self.list.find( "li" ).not( '.ui-selectmenu-optgroup' ).find( 'a' ).attr( 'role', 'option' );
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if ( options.dropdown ) {
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self.list
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.addClass( 'ui-corner-bottom' )
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.removeClass( 'ui-corner-all' );
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}
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// transfer disabled state
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if ( self.element.attr( 'disabled' ) ) {
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self.disable();
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} else {
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self.enable()
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}
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},
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open: function( event ) {
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var self = this,
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options = this.options,
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currentItem = self._getSelectedItem();
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if ( !options.disabled ) {
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// close all other selectmenus
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$( '.' + self.widgetBaseClass + '-open' ).not( self.newelement ).each( function() {
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$( this ).children( 'ul.ui-menu' ).data( 'element.selectelemenu' ).selectmenu( 'close' );
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});
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if ( options.dropdown ) {
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self.newelement
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.addClass( 'ui-corner-top' )
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.removeClass( 'ui-corner-all' );
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}
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self.listWrap.addClass( self.widgetBaseClass + '-open' );
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self.list.menu( "focus", null, currentItem );
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if ( !options.dropdown ) {
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// center current item
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if ( self.list.css("overflow") == "auto" ) {
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self.list.scrollTop( self.list.scrollTop() + currentItem.position().top - self.list.outerHeight()/2 + currentItem.outerHeight()/2 );
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}
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// calculate offset
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var _offset = (self.list.offset().top - currentItem.offset().top + (self.newelement.outerHeight() - currentItem.outerHeight()) / 2);
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$.extend( options.position, {
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my: "left top",
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at: "left top",
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offset: "0 " + _offset
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});
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}
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self.listWrap.position( $.extend({
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of: this.newelementWrap
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}, options.position ));
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this.opened = true;
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self._trigger( "open", event );
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}
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},
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close: function( event, focus ) {
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var self = this,
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options = this.options;
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if ( self.opened ) {
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if ( options.dropdown ) {
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self.newelement
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.addClass( 'ui-corner-all' )
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.removeClass( 'ui-corner-top' );
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}
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self.listWrap.removeClass( self.widgetBaseClass + '-open' );
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this.opened = false;
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if (focus) self.newelement.focus();
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self._trigger( "close", event );
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}
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},
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_renderMenu: function( ul, items ) {
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var self = this,
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currentOptgroup = "";
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$.each( items, function( index, item ) {
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if ( item.optgroup != currentOptgroup ) {
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var optgroup = $( '<li class="ui-selectmenu-optgroup">' + item.optgroup + '</li>' );
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if ( $( self.items[ item.index ] ).parent( "optgroup" ).attr( "disabled" ) ) optgroup.addClass( 'ui-state-disabled' );
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ul.append( optgroup );
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currentOptgroup = item.optgroup;
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}
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self._renderItem( ul, item );
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});
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},
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_renderItem: function( ul, item) {
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return $( "<li />" )
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.addClass( ( item.disabled ) ? 'ui-state-disabled' : '' )
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.data( "item.selectmenu", item )
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.append( $( "<a />", {
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text: item.label,
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href: '#',
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click: function( event ) {
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event.preventDefault();
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}
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})
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).appendTo( ul );
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},
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_move: function( key, event ) {
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// TODO this focus is needed to make the select below work,
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// but should be removed as its fires an unwanted focus event
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if ( !this.opened ) {
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this.list.menu( "focus", event, this._getSelectedItem() );
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}
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this.list.menu( key, event );
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if ( !this.opened ) {
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this.list.menu( "select", event );
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}
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},
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_getSelectedItem: function() {
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return this.list.find( "li" ).not( '.ui-selectmenu-optgroup' ).eq( this.element[0].selectedIndex );
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},
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_setSelected: function( event, item ) {
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this.newelement.children( '.ui-button-text' ).text( item.label );
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this.element[0].selectedIndex = item.index;
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this.options.value = item.value;
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},
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_toggle: function( event ) {
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if ( this.opened ) {
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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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_setOption: function( key, value ) {
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this._super( "_setOption", key, value );
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if ( key === "appendTo" ) {
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this.listWrap.appendTo( $( value || "body", this.element[0].ownerDocument )[0] );
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}
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if ( key === "value" && value) {
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this.element[0].value = value;
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}
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if ( key === "disabled" ) {
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this.newelement.button( "option", "disabled", value );
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if ( value ) {
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this.element.attr( "disabled", "disabled" );
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} else {
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this.element.removeAttr( "disabled" );
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}
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this.list.attr( "aria-disabled", value );
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this.close();
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}
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},
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_initSource: function() {
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if ( !$.isArray( this.options.source ) ) {
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var data = [];
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$.each( this.items, function( index, item ) {
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var option = $( item ),
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optgroup = option.parent( "optgroup" );
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data.push({
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index: index,
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value: option.attr( 'value' ),
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label: option.text(),
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optgroup: optgroup.attr( "label" ) || false,
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disabled: optgroup.attr( "disabled" ) || option.attr( "disabled" )
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});
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});
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this.options.source = data;
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}
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},
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_destroy: function() {
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this.listWrap.remove();
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this.newelementWrap.remove();
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this.element.show().unbind( '.selectmenu' );
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$( document ).unbind( '.selectmenu' );
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}
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});
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}( jQuery ));
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