source: Dev/trunk/src/client/dijit/RadioMenuItem.js @ 501

define([
        "dojo/_base/declare", // declare
        "dojo/dom-class", // domClass.toggle
        "./CheckedMenuItem"
], function(declare, domClass, CheckedMenuItem){

        // module:
        //              dijit/RadioButtonMenuItem

        return declare("dijit.RadioButtonMenuItem", CheckedMenuItem, {
                // summary:
                //              A radio-button-like menu item for toggling on and off

                // Use both base classes so we get styles like dijitMenuItemDisabled
                baseClass: "dijitMenuItem dijitRadioMenuItem",

                role: "menuitemradio",

                // checkedChar: String
                //              Character (or string) used in place of radio button icon when display in high contrast mode
                checkedChar: "*",

                // group: String
                //              Toggling on a RadioMenuItem in a given group toggles off the other RadioMenuItems in that group.
                group: "",

                // mapping from group name to checked widget within that group (or null if no widget is checked)
                _currentlyChecked: {},

                _setCheckedAttr: function(/*Boolean*/ checked){
                        // summary:
                        //              Hook so attr('checked', bool) works.
                        //              Sets the class and state for the check box.

                        if(checked && this.group && this._currentlyChecked[this.group] && this._currentlyChecked[this.group] != this){
                                // if another RadioMenuItem in my group is checked, uncheck it
                                this._currentlyChecked[this.group].set("checked", false);
                        }

                        this.inherited(arguments);

                        // set the currently checked widget to this, or null if we are clearing the currently checked widget
                        if(this.group){
                                if(checked){
                                        this._currentlyChecked[this.group] = this;
                                }else if(this._currentlyChecked[this.group] == this){
                                        this._currentlyChecked[this.group] = null;
                                }
                        }
                },

                _onClick: function(evt){
                        // summary:
                        //              Clicking this item toggles it on.   If it's already on, then clicking does nothing.
                        // tags:
                        //              private

                        if(!this.disabled && !this.checked){
                                this.set("checked", true);
                                this.onChange(true);
                        }
                        this.onClick(evt);
                }
        });
});