More powerful Model.reset()

extension-model-reset.js

ResetExtension = function(){};
ResetExtension.prototype = {
    reset : function(name, options) {
        var self = this,
            attributes = {};
        
        //allow old-style string name/string name + options/just options
        if(Y.Lang.isString(name)) {
            attributes[name] = self._state.get(name, "initValue");
        } else if(Y.Lang.isObject(name)) {
            options = name;
        }
        
        if(options && options.attributes) {
            attributes = Y.merge(attributes, options.attributes);
            
            delete options.attributes;
        }
        
        Y.Object.each(self._state.data, function(value, key) {
            if(!Y.Object.owns(attributes, key)) {
                attributes[key] = self._state.get(key, "initValue");
            }
        });
        
        return self.setAttrs(attributes, options);
    }
};