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Viewing changes to js/jquery/ui.widget.js

  • Committer: Nick
  • Date: 2011-11-14 04:10:28 UTC
  • Revision ID: nick@little-apps.org-20111114041028-cvmpwq6z6hx3pkya
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js/jquery/ui.widget.js
 
1
/*!
 
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 * jQuery UI Widget 1.8
 
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 *
 
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 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 
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 * Dual licensed under the MIT (MIT-LICENSE.txt)
 
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 * and GPL (GPL-LICENSE.txt) licenses.
 
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 *
 
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 * http://docs.jquery.com/UI/Widget
 
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 */
 
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(function( $ ) {
 
11
 
 
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var _remove = $.fn.remove;
 
13
 
 
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$.fn.remove = function( selector, keepData ) {
 
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        return this.each(function() {
 
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                if ( !keepData ) {
 
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                        if ( !selector || $.filter( selector, [ this ] ).length ) {
 
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                                $( "*", this ).add( this ).each(function() {
 
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                                        $( this ).triggerHandler( "remove" );
 
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                                });
 
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                        }
 
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                }
 
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                return _remove.call( $(this), selector, keepData );
 
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        });
 
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};
 
26
 
 
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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;
 
32
 
 
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        if ( !prototype ) {
 
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                prototype = base;
 
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                base = $.Widget;
 
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        }
 
37
 
 
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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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        };
 
42
 
 
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        $[ namespace ] = $[ namespace ] || {};
 
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        $[ namespace ][ name ] = function( options, element ) {
 
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                // allow instantiation without initializing for simple inheritance
 
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                if ( arguments.length ) {
 
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                        this._createWidget( options, element );
 
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                }
 
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        };
 
50
 
 
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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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//      $.each( basePrototype, function( key, val ) {
 
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//              if ( $.isPlainObject(val) ) {
 
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//                      basePrototype[ key ] = $.extend( {}, val );
 
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//              }
 
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//      });
 
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        basePrototype.options = $.extend( {}, basePrototype.options );
 
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        $[ namespace ][ name ].prototype = $.extend( true, basePrototype, {
 
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                namespace: namespace,
 
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                widgetName: name,
 
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                widgetEventPrefix: $[ namespace ][ name ].prototype.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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};
 
70
 
 
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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 = Array.prototype.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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                        $.extend.apply( null, [ true, options ].concat(args) ) :
 
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                        options;
 
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                // prevent calls to internal methods
 
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                if ( isMethodCall && options.substring( 0, 1 ) === "_" ) {
 
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                        return returnValue;
 
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                }
 
86
 
 
87
                if ( isMethodCall ) {
 
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                        this.each(function() {
 
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                                var instance = $.data( this, name ),
 
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                                        methodValue = instance && $.isFunction( instance[options] ) ?
 
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                                                instance[ options ].apply( instance, args ) :
 
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                                                instance;
 
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                                if ( methodValue !== instance && methodValue !== undefined ) {
 
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                                        returnValue = methodValue;
 
95
                                        return false;
 
96
                                }
 
97
                        });
 
98
                } else {
 
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                        this.each(function() {
 
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                                var instance = $.data( this, name );
 
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                                if ( instance ) {
 
102
                                        if ( options ) {
 
103
                                                instance.option( options );
 
104
                                        }
 
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                                        instance._init();
 
106
                                } else {
 
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                                        $.data( this, name, new object( options, this ) );
 
108
                                }
 
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                        });
 
110
                }
 
111
 
 
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                return returnValue;
 
113
        };
 
114
};
 
115
 
 
116
$.Widget = function( options, element ) {
 
117
        // allow instantiation without initializing for simple inheritance
 
118
        if ( arguments.length ) {
 
119
                this._createWidget( options, element );
 
120
        }
 
121
};
 
122
 
 
123
$.Widget.prototype = {
 
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        widgetName: "widget",
 
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        widgetEventPrefix: "",
 
126
        options: {
 
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                disabled: false
 
128
        },
 
129
        _createWidget: function( options, element ) {
 
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                // $.widget.bridge stores the plugin instance, but we do it anyway
 
131
                // so that it's stored even before the _create function runs
 
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                this.element = $( element ).data( this.widgetName, this );
 
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                this.options = $.extend( true, {},
 
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                        this.options,
 
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                        $.metadata && $.metadata.get( element )[ this.widgetName ],
 
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                        options );
 
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                var self = this;
 
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                this.element.bind( "remove." + this.widgetName, function() {
 
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                        self.destroy();
 
141
                });
 
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143
                this._create();
 
144
                this._init();
 
145
        },
 
146
        _create: function() {},
 
147
        _init: function() {},
 
148
 
 
149
        destroy: function() {
 
150
                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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                                this.namespace + "-state-disabled" );
 
159
        },
 
160
 
 
161
        widget: function() {
 
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                return this.element;
 
163
        },
 
164
 
 
165
        option: function( key, value ) {
 
166
                var options = key,
 
167
                        self = this;
 
168
 
 
169
                if ( arguments.length === 0 ) {
 
170
                        // don't return a reference to the internal hash
 
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                        return $.extend( {}, self.options );
 
172
                }
 
173
 
 
174
                if  (typeof key === "string" ) {
 
175
                        if ( value === undefined ) {
 
176
                                return this.options[ key ];
 
177
                        }
 
178
                        options = {};
 
179
                        options[ key ] = value;
 
180
                }
 
181
 
 
182
                $.each( options, function( key, value ) {
 
183
                        self._setOption( key, value );
 
184
                });
 
185
 
 
186
                return self;
 
187
        },
 
188
        _setOption: function( key, value ) {
 
189
                this.options[ key ] = value;
 
190
 
 
191
                if ( key === "disabled" ) {
 
192
                        this.widget()
 
193
                                [ value ? "addClass" : "removeClass"](
 
194
                                        this.widgetBaseClass + "-disabled" + " " +
 
195
                                        this.namespace + "-state-disabled" )
 
196
                                .attr( "aria-disabled", value );
 
197
                }
 
198
 
 
199
                return this;
 
200
        },
 
201
 
 
202
        enable: function() {
 
203
                return this._setOption( "disabled", false );
 
204
        },
 
205
        disable: function() {
 
206
                return this._setOption( "disabled", true );
 
207
        },
 
208
 
 
209
        _trigger: function( type, event, data ) {
 
210
                var callback = this.options[ type ];
 
211
 
 
212
                event = $.Event( event );
 
213
                event.type = ( type === this.widgetEventPrefix ?
 
214
                        type :
 
215
                        this.widgetEventPrefix + type ).toLowerCase();
 
216
                data = data || {};
 
217
 
 
218
                // copy original event properties over to the new event
 
219
                // this would happen if we could call $.event.fix instead of $.Event
 
220
                // but we don't have a way to force an event to be fixed multiple times
 
221
                if ( event.originalEvent ) {
 
222
                        for ( var i = $.event.props.length, prop; i; ) {
 
223
                                prop = $.event.props[ --i ];
 
224
                                event[ prop ] = event.originalEvent[ prop ];
 
225
                        }
 
226
                }
 
227
 
 
228
                this.element.trigger( event, data );
 
229
 
 
230
                return !( $.isFunction(callback) &&
 
231
                        callback.call( this.element[0], event, data ) === false ||
 
232
                        event.isDefaultPrevented() );
 
233
        }
 
234
};
 
235
 
 
236
})( jQuery );