mirror of
https://github.com/jquery/jquery-ui.git
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408 lines
11 KiB
JavaScript
408 lines
11 KiB
JavaScript
/*!
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* jQuery UI Widget @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/Widget
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*/
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(function( $, undefined ) {
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var slice = Array.prototype.slice;
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var _cleanData = $.cleanData;
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$.cleanData = function( elems ) {
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for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
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$( elem ).triggerHandler( "remove" );
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}
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_cleanData( elems );
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};
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$.widget = function( name, base, prototype ) {
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var namespace = name.split( "." )[ 0 ],
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fullName;
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name = name.split( "." )[ 1 ];
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fullName = namespace + "-" + name;
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if ( !prototype ) {
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prototype = base;
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base = $.Widget;
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}
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// create selector for plugin
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$.expr[ ":" ][ fullName ] = function( elem ) {
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return !!$.data( elem, name );
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};
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$[ namespace ] = $[ namespace ] || {};
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// create the constructor using $.extend() so we can carry over any
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// static properties stored on the existing constructor (if there is one)
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$[ namespace ][ name ] = $.extend( function( options, element ) {
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// allow instantiation without "new" keyword
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if ( !this._createWidget ) {
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return new $[ namespace ][ name ]( options, element );
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}
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// allow instantiation without initializing for simple inheritance
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// must use "new" keyword (the code above always passes args)
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if ( arguments.length ) {
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this._createWidget( options, element );
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}
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}, $[ namespace ][ name ], { version: prototype.version } );
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var basePrototype = new base();
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// we need to make the options hash a property directly on the new instance
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// otherwise we'll modify the options hash on the prototype that we're
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// inheriting from
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basePrototype.options = $.widget.extend( {}, basePrototype.options );
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$.each( prototype, function( prop, value ) {
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if ( $.isFunction( value ) ) {
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prototype[ prop ] = (function() {
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var _super = function( method ) {
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return base.prototype[ method ].apply( this, slice.call( arguments, 1 ) );
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};
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var _superApply = function( method, args ) {
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return base.prototype[ method ].apply( this, args );
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};
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return function() {
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var __super = this._super,
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__superApply = this._superApply,
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returnValue;
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this._super = _super;
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this._superApply = _superApply;
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returnValue = value.apply( this, arguments );
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this._super = __super;
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this._superApply = __superApply;
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return returnValue;
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};
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}());
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}
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});
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$[ namespace ][ name ].prototype = $.widget.extend( basePrototype, {
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namespace: namespace,
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widgetName: name,
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widgetEventPrefix: name,
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widgetBaseClass: fullName
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}, prototype );
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$.widget.bridge( name, $[ namespace ][ name ] );
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};
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$.widget.extend = function( target ) {
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var input = slice.call( arguments, 1 ),
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inputIndex = 0,
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inputLength = input.length,
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key,
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value;
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for ( ; inputIndex < inputLength; inputIndex++ ) {
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for ( key in input[ inputIndex ] ) {
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value = input[ inputIndex ][ key ];
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if (input[ inputIndex ].hasOwnProperty( key ) && value !== undefined ) {
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target[ key ] = $.isPlainObject( value ) ? $.widget.extend( {}, target[ key ], value ) : value;
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}
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}
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}
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return target;
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};
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$.widget.bridge = function( name, object ) {
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$.fn[ name ] = function( options ) {
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var isMethodCall = typeof options === "string",
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args = slice.call( arguments, 1 ),
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returnValue = this;
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// allow multiple hashes to be passed on init
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options = !isMethodCall && args.length ?
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$.widget.extend.apply( null, [ options ].concat(args) ) :
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options;
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if ( isMethodCall ) {
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this.each(function() {
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var instance = $.data( this, name );
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if ( !instance ) {
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return $.error( "cannot call methods on " + name + " prior to initialization; " +
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"attempted to call method '" + options + "'" );
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}
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if ( !$.isFunction( instance[options] ) || options.charAt( 0 ) === "_" ) {
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return $.error( "no such method '" + options + "' for " + name + " widget instance" );
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}
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var methodValue = instance[ options ].apply( instance, args );
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if ( methodValue !== instance && methodValue !== undefined ) {
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returnValue = methodValue.jquery ?
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returnValue.pushStack( methodValue.get() ) :
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methodValue;
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return false;
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}
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});
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} else {
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this.each(function() {
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var instance = $.data( this, name );
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if ( instance ) {
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instance.option( options || {} )._init();
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} else {
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object( options, this );
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}
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});
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}
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return returnValue;
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};
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};
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$.Widget = function( options, element ) {
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// allow instantiation without "new" keyword
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if ( !this._createWidget ) {
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return new $[ namespace ][ name ]( options, element );
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}
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// allow instantiation without initializing for simple inheritance
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// must use "new" keyword (the code above always passes args)
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if ( arguments.length ) {
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this._createWidget( options, element );
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}
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};
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$.Widget.prototype = {
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widgetName: "widget",
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widgetEventPrefix: "",
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defaultElement: "<div>",
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options: {
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disabled: false,
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// callbacks
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create: null
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},
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_createWidget: function( options, element ) {
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element = $( element || this.defaultElement || this )[ 0 ];
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this.element = $( element );
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this.options = $.widget.extend( {},
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this.options,
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this._getCreateOptions(),
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options );
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this.bindings = $();
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this.hoverable = $();
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this.focusable = $();
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if ( element !== this ) {
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$.data( element, this.widgetName, this );
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this._bind({ remove: "destroy" });
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}
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this._create();
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this._trigger( "create" );
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this._init();
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},
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_getCreateOptions: $.noop,
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_create: $.noop,
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_init: $.noop,
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destroy: function() {
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this._destroy();
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// we can probably remove the unbind calls in 2.0
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// all event bindings should go through this._bind()
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this.element
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.unbind( "." + this.widgetName )
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.removeData( this.widgetName );
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this.widget()
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.unbind( "." + this.widgetName )
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.removeAttr( "aria-disabled" )
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.removeClass(
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this.widgetBaseClass + "-disabled " +
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"ui-state-disabled" );
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// clean up events and states
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this.bindings.unbind( "." + this.widgetName );
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this.hoverable.removeClass( "ui-state-hover" );
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this.focusable.removeClass( "ui-state-focus" );
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},
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_destroy: $.noop,
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widget: function() {
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return this.element;
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},
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option: function( key, value ) {
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var options = key,
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parts,
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curOption,
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i;
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if ( arguments.length === 0 ) {
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// don't return a reference to the internal hash
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return $.widget.extend( {}, this.options );
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}
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if ( typeof key === "string" ) {
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if ( value === undefined ) {
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return this.options[ key ];
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}
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// handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } }
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options = {};
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parts = key.split( "." );
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key = parts.shift();
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if ( parts.length ) {
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curOption = options[ key ] = $.widget.extend( {}, this.options[ key ] );
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for ( i = 0; i < parts.length - 1; i++ ) {
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curOption[ parts[ i ] ] = curOption[ parts[ i ] ] || {};
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curOption = curOption[ parts[ i ] ];
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}
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curOption[ parts.pop() ] = value;
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} else {
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options[ key ] = value;
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}
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}
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this._setOptions( options );
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return this;
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},
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_setOptions: function( options ) {
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var self = this;
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$.each( options, function( key, value ) {
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self._setOption( key, value );
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});
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return this;
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},
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_setOption: function( key, value ) {
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this.options[ key ] = value;
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if ( key === "disabled" ) {
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this.widget()
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.toggleClass( this.widgetBaseClass + "-disabled ui-state-disabled", !!value )
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.attr( "aria-disabled", value );
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this.hoverable.removeClass( "ui-state-hover" );
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this.focusable.removeClass( "ui-state-focus" );
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}
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return this;
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},
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enable: function() {
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return this._setOption( "disabled", false );
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},
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disable: function() {
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return this._setOption( "disabled", true );
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},
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_bind: function( element, handlers ) {
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// no element argument, shuffle and use this.element
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if ( !handlers ) {
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handlers = element;
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element = this.element;
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} else {
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// accept selectors, DOM elements
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element = $( element );
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this.bindings = this.bindings.add( element );
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}
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var instance = this;
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$.each( handlers, function( event, handler ) {
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element.bind( event + "." + instance.widgetName, function() {
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// allow widgets to customize the disabled handling
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// - disabled as an array instead of boolean
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// - disabled class as method for disabling individual parts
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if ( instance.options.disabled === true ||
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$( this ).hasClass( "ui-state-disabled" ) ) {
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return;
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}
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return ( typeof handler === "string" ? instance[ handler ] : handler )
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.apply( instance, arguments );
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});
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});
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},
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_hoverable: function( element ) {
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this.hoverable = this.hoverable.add( element );
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this._bind( element, {
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mouseenter: function( event ) {
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$( event.currentTarget ).addClass( "ui-state-hover" );
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},
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mouseleave: function( event ) {
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$( event.currentTarget ).removeClass( "ui-state-hover" );
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}
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});
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},
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_focusable: function( element ) {
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this.focusable = this.focusable.add( element );
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this._bind( element, {
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focusin: function( event ) {
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$( event.currentTarget ).addClass( "ui-state-focus" );
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},
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focusout: function( event ) {
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$( event.currentTarget ).removeClass( "ui-state-focus" );
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}
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});
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},
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_trigger: function( type, event, data ) {
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var callback = this.options[ type ],
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args;
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event = $.Event( event );
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event.type = ( type === this.widgetEventPrefix ?
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type :
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this.widgetEventPrefix + type ).toLowerCase();
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data = data || {};
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// copy original event properties over to the new event
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// this would happen if we could call $.event.fix instead of $.Event
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// but we don't have a way to force an event to be fixed multiple times
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if ( event.originalEvent ) {
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for ( var i = $.event.props.length, prop; i; ) {
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prop = $.event.props[ --i ];
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event[ prop ] = event.originalEvent[ prop ];
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}
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}
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this.element.trigger( event, data );
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args = $.isArray( data ) ?
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[ event ].concat( data ) :
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[ event, data ];
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return !( $.isFunction( callback ) &&
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callback.apply( this.element[0], args ) === false ||
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event.isDefaultPrevented() );
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}
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};
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$.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) {
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$.Widget.prototype[ "_" + method ] = function( element, options, callback ) {
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options = options || {};
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var hasOptions = !$.isEmptyObject( options ),
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effectName = options.effect || defaultEffect;
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options.complete = callback;
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if ( options.delay ) {
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element.delay( options.delay );
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}
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if ( hasOptions && $.effects && ( $.effects.effect[ effectName ] || $.uiBackCompat !== false && $.effects[ effectName ] ) ) {
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element[ method ]( options );
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} else if ( effectName !== method && element[ effectName ] ) {
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element[ effectName ]( options.duration, options.easing, callback );
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} else {
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element.queue( function() {
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$( this )[ method ]();
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if ( callback ) {
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callback.call( element[ 0 ] );
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}
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});
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}
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};
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});
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// DEPRECATED
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if ( $.uiBackCompat !== false ) {
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$.Widget.prototype._getCreateOptions = function() {
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return $.metadata && $.metadata.get( this.element[0] )[ this.widgetName ];
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};
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}
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})( jQuery );
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