comt: comparison src/cm/media/js/lib/yui/yui_3.0.0b1/build/base/base-debug.js

Mercurial Mercurial > comt / comparison

summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help

src/cm/media/js/lib/yui/yui_3.0.0b1/build/base/base-debug.js

changeset 0

40c8f766c9b8

equal deleted inserted replaced

--1:000000000000
+:40c8f766c9b8
+/*
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 3.0.0b1
+build: 1163
+*/
+YUI.add('base-base', function(Y) {
+/**
+* <p>
+* An augmentable class, which provides the augmented class with the ability to host plugins.
+* It adds <a href="#method_plug">plug</a> and <a href="#method_unplug">unplug</a> methods to the augmented class, which can
+* be used to add or remove plugins from instances of the class.
+* </p>
+*
+* <p>Plugins can also be added through the constructor configuration object passed to the host class' constructor using
+* the "plugins" property. Supported values for the "plugins" property are those defined by the <a href="#method_plug">plug</a> method.
+*
+* For example the following code would add the AnimPlugin and IOPlugin to Overlay (the plugin host):
+* <xmp>
+* var o = new Overlay({plugins: [ AnimPlugin, {fn:IOPlugin, cfg:{section:"header"}}]});
+* </xmp>
+* </p>
+* <p>
+* Plug.Host's protected <a href="#method_initPlugins">_initPlugins</a> and <a href="#method_destroyPlugins">_destroyPlugins</a>
+* methods should be invoked by the host class at the appropriate point in the host's lifecyle. This is done by default for
+* the Base class, so developers extending Base or Widget don't need to do anything to enable plugin support.
+* </p>
+*
+* @class Plugin.Host
+*/
+var L = Y.Lang;
+function PluginHost(config) {
+this._plugins = {};
+}
+PluginHost.prototype = {
+/**
+* Adds a plugin to the host object. This will instantiate the
+* plugin and attach it to the configured namespace on the host object.
+*
+* @method plug
+* @chainable
+* @param p {Function | Object |Array} Accepts the plugin class, or an
+* object with a "fn" property specifying the plugin class and
+* a "cfg" property specifying the configuration for the Plugin.
+* <p>
+* Additionally an Array can also be passed in, with the above function or
+* object values, allowing the user to add multiple plugins in a single call.
+* </p>
+* @param config (Optional) If the first argument is the plugin class, the second argument
+* can be the configuration for the plugin.
+* @return {Base} A reference to the host object
+*/
+plug: function(p, config) {
+if (p) {
+if (L.isFunction(p)) {
+this._plug(p, config);
+} else if (L.isArray(p)) {
+for (var i = 0, ln = p.length; i < ln; i++) {
+this.plug(p[i]);
+}
+} else {
+this._plug(p.fn, p.cfg);
+}
+}
+return this;
+},
+/**
+* Removes a plugin from the host object. This will destroy the
+* plugin instance and delete the namepsace from the host object.
+*
+* @method unplug
+* @param {String | Function} plugin The namespace of the plugin, or the plugin class with the static NS namespace property defined. If not provided,
+* all registered plugins are unplugged.
+* @return {Base} A reference to the host object
+* @chainable
+*/
+unplug: function(plugin) {
+if (plugin) {
+this._unplug(plugin);
+} else {
+var ns;
+for (ns in this._plugins) {
+if (this._plugins.hasOwnProperty(ns)) {
+this._unplug(ns);
+}
+}
+}
+return this;
+},
+/**
+* Determines if a plugin has plugged into this host.
+*
+* @method hasPlugin
+* @param {String} ns The plugin's namespace
+* @return {boolean} returns true, if the plugin has been plugged into this host, false otherwise.
+*/
+hasPlugin : function(ns) {
+return (this._plugins[ns] && this[ns]);
+},
+/**
+* Initializes static plugins registered on the host (using the
+* Base.plug static method) and any plugins passed to the
+* instance through the "plugins" configuration property.
+*
+* @method _initPlugins
+* @param {Config} config The configuration object with property name/value pairs.
+* @private
+*/
+_initPlugins: function(config) {
+// Class Configuration
+var classes = this._getClasses(),
+plug = [],
+unplug = {},
+constructor, i, classPlug, classUnplug, pluginClassName;
+//TODO: Room for optimization. Can we apply statically/unplug in same pass?
+for (i = classes.length - 1; i >= 0; i--) {
+constructor = classes[i];
+classUnplug = constructor._UNPLUG;
+if (classUnplug) {
+// subclasses over-write
+Y.mix(unplug, classUnplug, true);
+}
+classPlug = constructor._PLUG;
+if (classPlug) {
+// subclasses over-write
+Y.mix(plug, classPlug, true);
+}
+}
+for (pluginClassName in plug) {
+if (plug.hasOwnProperty(pluginClassName)) {
+if (!unplug[pluginClassName]) {
+this.plug(plug[pluginClassName]);
+}
+}
+}
+// User Configuration
+if (config && config.plugins) {
+this.plug(config.plugins);
+}
+},
+/**
+* Unplugs and destroys all plugins on the host
+* @method _destroyPlugins
+* @private
+*/
+_destroyPlugins: function() {
+this._unplug();
+},
+/**
+* Private method used to instantiate and attach plugins to the host
+*
+* @method _plug
+* @param {Function} PluginClass The plugin class to instantiate
+* @param {Object} config The configuration object for the plugin
+* @private
+*/
+_plug: function(PluginClass, config) {
+if (PluginClass && PluginClass.NS) {
+var ns = PluginClass.NS;
+config = config || {};
+config.host = this;
+if (this.hasPlugin(ns)) {
+// Update config
+this[ns].setAttrs(config);
+} else {
+// Create new instance
+this[ns] = new PluginClass(config);
+this._plugins[ns] = PluginClass;
+}
+}
+},
+/**
+* Unplugs and destroys a plugin already instantiated with the host.
+*
+* @method _unplug
+* @private
+* @param {String | Function} plugin The namespace for the plugin, or a plugin class with the static NS property defined.
+*/
+_unplug : function(plugin) {
+var ns = plugin,
+plugins = this._plugins;
+if (L.isFunction(plugin)) {
+ns = plugin.NS;
+if (ns && (!plugins[ns] || plugins[ns] !== plugin)) {
+ns = null;
+}
+}
+if (ns) {
+if (this[ns]) {
+this[ns].destroy();
+delete this[ns];
+}
+if (plugins[ns]) {
+delete plugins[ns];
+}
+}
+}
+};
+/**
+* Registers plugins to be instantiated at the class level (plugins
+* which should be plugged into every instance of the class by default).
+*
+* @method Plugin.Host.plug
+* @static
+*
+* @param {Function} hostClass The host class on which to register the plugins
+* @param {Function | Array} plugin Either the plugin class, an array of plugin classes or an array of objects (with fn and cfg properties defined)
+* @param {Object} config (Optional) If plugin is the plugin class, the configuration for the plugin
+*/
+PluginHost.plug = function(hostClass, plugin, config) {
+// Cannot plug into Base, since Plugins derive from Base [ will cause infinite recurrsion ]
+var p, i, l, name;
+if (hostClass !== Y.Base) {
+hostClass._PLUG = hostClass._PLUG || {};
+if (!L.isArray(plugin)) {
+if (config) {
+plugin = {fn:plugin, cfg:config};
+}
+plugin = [plugin];
+}
+for (i = 0, l = plugin.length; i < l;i++) {
+p = plugin[i];
+name = p.NAME || p.fn.NAME;
+hostClass._PLUG[name] = p;
+}
+}
+};
+/**
+* Unregisters any class level plugins which have been registered by the host class, or any
+* other class in the hierarchy.
+*
+* @method Plugin.Host.unplug
+* @static
+*
+* @param {Function} hostClass The host class from which to unregister the plugins
+* @param {Function | Array} plugin The plugin class, or an array of plugin classes
+*/
+PluginHost.unplug = function(hostClass, plugin) {
+var p, i, l, name;
+if (hostClass !== Y.Base) {
+hostClass._UNPLUG = hostClass._UNPLUG || {};
+if (!L.isArray(plugin)) {
+plugin = [plugin];
+}
+for (i = 0, l = plugin.length; i < l; i++) {
+p = plugin[i];
+name = p.NAME;
+if (!hostClass._PLUG[name]) {
+hostClass._UNPLUG[name] = p;
+} else {
+delete hostClass._PLUG[name];
+}
+}
+}
+};
+Y.namespace("Plugin").Host = PluginHost;
+/**
+* The base module provides the Base class, which objects requiring attribute and custom event support can extend.
+* The module also provides two ways to reuse code - An augmentable Plugin.Host interface which provides plugin support
+* (which is augmented to the Base class) and Base.build which provides a way to
+* build custom classes using extensions.
+*
+* @module base
+*/
+/**
+* The base-base submodule provides the Base class and augmentable Plugin.Host implementation,
+* without the extension support provided by Base.build.
+*
+* @module base
+* @submodule base-base
+*/
+var O = Y.Object,
+DOT = ".",
+DESTROY = "destroy",
+INIT = "init",
+INITIALIZED = "initialized",
+DESTROYED = "destroyed",
+INITIALIZER = "initializer",
+OBJECT_CONSTRUCTOR = Object.prototype.constructor,
+DEEP = "deep",
+SHALLOW = "shallow",
+VALUE = "value",
+DESTRUCTOR = "destructor";
+/**
+* <p>
+* A base class which objects requiring attributes and custom event support can
+* extend. Base also handles the chaining of initializer and destructor methods across
+* the hierarchy as part of object construction and destruction. Additionally, attributes configured
+* through the static <a href="#property_Base.ATTRS">ATTRS</a> property for each class
+* in the hierarchy will be initialized by Base.
+* </p>
+*
+* <p>
+* The static <a href="#property_Base.NAME">NAME</a> property of each class extending
+* from Base will be used as the identifier for the class, and is used by Base to prefix
+* all events fired by instances of that class.
+* </p>
+* @class Base
+* @constructor
+* @uses Attribute
+* @uses Plugin.Host
+*
+* @param {Object} config Object with configuration property name/value pairs
+*/
+function Base() {
+Y.log('constructor called', 'life', 'base');
+Y.Attribute.call(this);
+Y.Plugin.Host.call(this);
+this._silentInit = this._silentInit || false;
+if (this._lazyAddAttrs !== false) { this._lazyAddAttrs = true; }
+this.init.apply(this, arguments);
+}
+/**
+* The list of properties which can be configured for
+* each attribute (e.g. setter, getter, writeOnce, readOnly etc.)
+*
+* @property Base._ATTR_CFG
+* @type Array
+* @static
+* @private
+*/
+Base._ATTR_CFG = Y.Attribute._ATTR_CFG.concat("cloneDefaultValue");
+/**
+* <p>
+* The string to be used to identify instances of
+* this class, for example in prefixing events.
+* </p>
+* <p>
+* Classes extending Base, should define their own
+* static NAME property, which should be camelCase by
+* convention (e.g. MyClass.NAME = "myClass";).
+* </p>
+* @property Base.NAME
+* @type String
+* @static
+*/
+Base.NAME = 'base';
+/**
+* The default set of attributes which will be available for instances of this class, and
+* their configuration. In addition to the configuration properties listed by
+* Attribute's <a href="Attribute.html#method_addAttr">addAttr</a> method, the attribute
+* can also be configured with a "cloneDefaultValue" property, which defines how the statically
+* defined value field should be protected ("shallow", "deep" and false are supported values).
+*
+* By default if the value is an object literal or an array it will be "shallow" cloned, to
+* protect the default value.
+*
+* @property Base.ATTRS
+* @type Object
+* @static
+*/
+Base.ATTRS = {
+/**
+* Flag indicating whether or not this object
+* has been through the init lifecycle phase.
+*
+* @attribute initialized
+* @readonly
+* @default false
+* @type boolean
+*/
+initialized: {
+readOnly:true,
+value:false
+},
+/**
+* Flag indicating whether or not this object
+* has been through the destroy lifecycle phase.
+*
+* @attribute destroyed
+* @readonly
+* @default false
+* @type boolean
+*/
+destroyed: {
+readOnly:true,
+value:false
+}
+};
+Base.prototype = {
+/**
+* Init lifecycle method, invoked during construction.
+* Fires the init event prior to setting up attributes and
+* invoking initializers for the class hierarchy.
+*
+* @method init
+* @final
+* @chainable
+* @param {Object} config Object with configuration property name/value pairs
+* @return {Base} A reference to this object
+*/
+init: function(config) {
+Y.log('init called', 'life', 'base');
+/**
+* The string used to identify the class of this object.
+*
+* @deprecated Use this.constructor.NAME
+* @property name
+* @type String
+*/
+this._yuievt.config.prefix = this.name = this.constructor.NAME;
+/**
+* <p>
+* Lifecycle event for the init phase, fired prior to initialization.
+* Invoking the preventDefault() method on the event object provided
+* to subscribers will prevent initialization from occuring.
+* </p>
+* <p>
+* Subscribers to the "after" momemt of this event, will be notified
+* after initialization of the object is complete (and therefore
+* cannot prevent initialization).
+* </p>
+*
+* @event init
+* @preventable _defInitFn
+* @param {EventFacade} e Event object, with a cfg property which
+* refers to the configuration object passed to the constructor.
+*/
+if (!this._silentInit) {
+this.publish(INIT, {
+queuable:false,
+defaultFn:this._defInitFn
+});
+}
+if (config) {
+if (config.on) {
+this.on(config.on);
+}
+if (config.after) {
+this.after(config.after);
+}
+}
+if (!this._silentInit) {
+this.fire(INIT, {cfg: config});
+} else {
+this._defInitFn({cfg: config});
+}
+return this;
+},
+/**
+* <p>
+* Destroy lifecycle method. Fires the destroy
+* event, prior to invoking destructors for the
+* class hierarchy.
+* </p>
+* <p>
+* Subscribers to the destroy
+* event can invoke preventDefault on the event object, to prevent destruction
+* from proceeding.
+* </p>
+* @method destroy
+* @return {Base} A reference to this object
+* @final
+* @chainable
+*/
+destroy: function() {
+Y.log('destroy called', 'life', 'base');
+/**
+* <p>
+* Lifecycle event for the destroy phase,
+* fired prior to destruction. Invoking the preventDefault
+* method on the event object provided to subscribers will
+* prevent destruction from proceeding.
+* </p>
+* <p>
+* Subscribers to the "after" moment of this event, will be notified
+* after destruction is complete (and as a result cannot prevent
+* destruction).
+* </p>
+* @event destroy
+* @preventable _defDestroyFn
+* @param {EventFacade} e Event object
+*/
+this.publish(DESTROY, {
+queuable:false,
+defaultFn: this._defDestroyFn
+});
+this.fire(DESTROY);
+return this;
+},
+/**
+* Default init event handler
+*
+* @method _defInitFn
+* @param {EventFacade} e Event object, with a cfg property which
+* refers to the configuration object passed to the constructor.
+* @protected
+*/
+_defInitFn : function(e) {
+this._initHierarchy(e.cfg);
+this._initPlugins(e.cfg);
+if (!this._silentInit) {
+this._set(INITIALIZED, true);
+} else {
+this._conf.add(INITIALIZED, VALUE, true);
+}
+},
+/**
+* Default destroy event handler
+*
+* @method _defDestroyFn
+* @param {EventFacade} e Event object
+* @protected
+*/
+_defDestroyFn : function(e) {
+this._destroyHierarchy();
+this._destroyPlugins();
+this._set(DESTROYED, true);
+},
+/**
+* Returns the class hierarchy for this object, with Base being the last class in the array.
+*
+* @method _getClasses
+* @protected
+* @return {Function[]} An array of classes (constructor functions), making up the class hierarchy for this object.
+* This value is cached the first time the method, or _getAttrCfgs, is invoked. Subsequent invocations return the
+* cached value.
+*/
+_getClasses : function() {
+if (!this._classes) {
+this._initHierarchyData();
+}
+return this._classes;
+},
+/**
+* Returns an aggregated set of attribute configurations, by traversing the class hierarchy.
+*
+* @method _getAttrCfgs
+* @protected
+* @return {Object} The hash of attribute configurations, aggregated across classes in the hierarchy
+* This value is cached the first time the method, or _getClasses, is invoked. Subsequent invocations return
+* the cached value.
+*/
+_getAttrCfgs : function() {
+if (!this._attrs) {
+this._initHierarchyData();
+}
+return this._attrs;
+},
+/**
+* A helper method used when processing ATTRS across the class hierarchy during
+* initialization. Returns a disposable object with the attributes defined for
+* the provided class, extracted from the set of all attributes passed in .
+*
+* @method _filterAttrCfs
+* @private
+*
+* @param {Function} clazz The class for which the desired attributes are required.
+* @param {Object} allCfgs The set of all attribute configurations for this instance.
+* Attributes will be removed from this set, if they belong to the filtered class, so
+* that by the time all classes are processed, allCfgs will be empty.
+*
+* @return {Object} The set of attributes belonging to the class passed in, in the form
+* of an object with attribute name/configuration pairs.
+*/
+_filterAttrCfgs : function(clazz, allCfgs) {
+var cfgs = null, attr, attrs = clazz.ATTRS;
+if (attrs) {
+for (attr in attrs) {
+if (attrs.hasOwnProperty(attr) && allCfgs[attr]) {
+cfgs = cfgs || {};
+cfgs[attr] = allCfgs[attr];
+delete allCfgs[attr];
+}
+}
+}
+return cfgs;
+},
+/**
+* A helper method used by _getClasses and _getAttrCfgs, which determines both
+* the array of classes and aggregate set of attribute configurations
+* across the class hierarchy for the instance.
+*
+* @method _initHierarchyData
+* @private
+*/
+_initHierarchyData : function() {
+var c = this.constructor,
+classes = [],
+attrs = [];
+while (c) {
+// Add to classes
+classes[classes.length] = c;
+// Add to attributes
+if (c.ATTRS) {
+attrs[attrs.length] = c.ATTRS;
+}
+c = c.superclass ? c.superclass.constructor : null;
+}
+this._classes = classes;
+this._attrs = this._aggregateAttrs(attrs);
+},
+/**
+* A helper method, used by _initHierarchyData to aggregate
+* attribute configuration across the instances class hierarchy.
+*
+* The method will potect the attribute configuration value to protect the statically defined
+* default value in ATTRS if required (if the value is an object literal, array or the
+* attribute configuration has cloneDefaultValue set to shallow or deep).
+*
+* @method _aggregateAttrs
+* @private
+* @param {Array} allAttrs An array of ATTRS definitions across classes in the hierarchy
+* (subclass first, Base last)
+* @return {Object} The aggregate set of ATTRS definitions for the instance
+*/
+_aggregateAttrs : function(allAttrs) {
+var attr,
+attrs,
+cfg,
+val,
+path,
+i,
+clone,
+cfgProps = Base._ATTR_CFG,
+aggAttrs = {};
+if (allAttrs) {
+for (i = allAttrs.length-1; i >= 0; --i) {
+attrs = allAttrs[i];
+for (attr in attrs) {
+if (attrs.hasOwnProperty(attr)) {
+// Protect config passed in
+cfg = Y.mix({}, attrs[attr], true, cfgProps);
+val = cfg.value;
+clone = cfg.cloneDefaultValue;
+if (val) {
+if ( (clone === undefined && (OBJECT_CONSTRUCTOR === val.constructor || L.isArray(val))) || clone === DEEP || clone === true) {
+Y.log('Cloning default value for attribute:' + attr, 'info', 'base');
+cfg.value = Y.clone(val);
+} else if (clone === SHALLOW) {
+Y.log('Merging default value for attribute:' + attr, 'info', 'base');
+cfg.value = Y.merge(val);
+}
+// else if (clone === false), don't clone the static default value.
+// It's intended to be used by reference.
+}
+path = null;
+if (attr.indexOf(DOT) !== -1) {
+path = attr.split(DOT);
+attr = path.shift();
+}
+if (path && aggAttrs[attr] && aggAttrs[attr].value) {
+O.setValue(aggAttrs[attr].value, path, val);
+} else if (!path){
+if (!aggAttrs[attr]) {
+aggAttrs[attr] = cfg;
+} else {
+Y.mix(aggAttrs[attr], cfg, true, cfgProps);
+}
+}
+}
+}
+}
+}
+return aggAttrs;
+},
+/**
+* Initializes the class hierarchy for the instance, which includes
+* initializing attributes for each class defined in the class's
+* static <a href="#property_Base.ATTRS">ATTRS</a> property and
+* invoking the initializer method on the prototype of each class in the hierarchy.
+*
+* @method _initHierarchy
+* @param {Object} userVals Object with configuration property name/value pairs
+* @private
+*/
+_initHierarchy : function(userVals) {
+var lazy = this._lazyAddAttrs,
+constr,
+constrProto,
+ci,
+ei,
+el,
+classes = this._getClasses(),
+attrCfgs = this._getAttrCfgs();
+for (ci = classes.length-1; ci >= 0; ci--) {
+constr = classes[ci];
+constrProto = constr.prototype;
+if (constr._yuibuild && constr._yuibuild.exts && !constr._yuibuild.dynamic) {
+for (ei = 0, el = constr._yuibuild.exts.length; ei < el; ei++) {
+constr._yuibuild.exts[ei].apply(this, arguments);
+}
+}
+this.addAttrs(this._filterAttrCfgs(constr, attrCfgs), userVals, lazy);
+if (constrProto.hasOwnProperty(INITIALIZER)) {
+constrProto.initializer.apply(this, arguments);
+}
+}
+},
+/**
+* Destroys the class hierarchy for this instance by invoking
+* the descructor method on the prototype of each class in the hierarchy.
+*
+* @method _destroyHierarchy
+* @private
+*/
+_destroyHierarchy : function() {
+var constr,
+constrProto,
+ci, cl,
+classes = this._getClasses();
+for (ci = 0, cl = classes.length; ci < cl; ci++) {
+constr = classes[ci];
+constrProto = constr.prototype;
+if (constrProto.hasOwnProperty(DESTRUCTOR)) {
+constrProto.destructor.apply(this, arguments);
+}
+}
+},
+/**
+* Default toString implementation. Provides the constructor NAME
+* and the instance ID.
+*
+* @method toString
+* @return {String} String representation for this object
+*/
+toString: function() {
+return this.constructor.NAME + "[" + Y.stamp(this) + "]";
+}
+};
+// Straightup augment, no wrapper functions
+Y.mix(Base, Y.Attribute, false, null, 1);
+Y.mix(Base, PluginHost, false, null, 1);
+/**
+* Alias for <a href="Plugin.Host.html#method_Plugin.Host.plug">Plugin.Host.plug</a>. See aliased
+* method for argument and return value details.
+*
+* @method Base.plug
+* @static
+*/
+Base.plug = PluginHost.plug;
+/**
+* Alias for <a href="Plugin.Host.html#method_Plugin.Host.unplug">Plugin.Host.unplug</a>. See the
+* aliased method for argument and return value details.
+*
+* @method Base.unplug
+* @static
+*/
+Base.unplug = PluginHost.unplug;
+// Fix constructor
+Base.prototype.constructor = Base;
+Y.Base = Base;
+}, '3.0.0b1' ,{requires:['attribute']});
+YUI.add('base-build', function(Y) {
+/**
+* The base-build submodule provides Base.build functionality, which
+* can be used to create custom classes, by aggregating extensions onto
+* a main class.
+*
+* @module base
+* @submodule base-build
+* @for Base
+*/
+var Base = Y.Base,
+L = Y.Lang;
+/**
+* The build configuration for the Base class.
+*
+* Defines the static fields which need to be aggregated
+* when the Base class is used as the main class passed to
+* the <a href="#method_Base.build">Base.build</a> method.
+*
+* @property Base._buildCfg
+* @type Object
+* @static
+* @final
+* @private
+*/
+Base._buildCfg = {
+aggregates : ["ATTRS", "_PLUG", "_UNPLUG"]
+};
+/**
+* <p>
+* Builds a custom constructor function (class) from the
+* main function, and array of extension functions (classes)
+* provided. The NAME field for the constructor function is
+* defined by the first argument passed in.
+* </p>
+* <p>
+* The cfg object supports the following properties
+* </p>
+* <dl>
+*    <dt>dynamic &#60;boolean&#62;</dt>
+*    <dd>
+*    <p>If true (default), a completely new class
+*    is created which extends the main class, and acts as the
+*    host on which the extension classes are augmented.</p>
+*    <p>If false, the extensions classes are augmented directly to
+*    the main class, modifying the main class' prototype.</p>
+*    </dd>
+*    <dt>aggregates &#60;String[]&#62;</dt>
+*    <dd>An array of static property names, which will get aggregated
+*    on to the built class, in addition to the default properties build
+*    will always aggregate as defined by the main class' static _buildCfg
+*    property.
+*    </dd>
+* </dl>
+*
+* @method Base.build
+* @static
+* @param {Function} name The name of the new class. Used to defined the NAME property for the new class.
+* @param {Function} main The main class on which to base the built class
+* @param {Function[]} extensions The set of extension classes which will be
+* augmented/aggregated to the built class.
+* @param {Object} cfg Optional. Build configuration for the class (see description).
+* @return {Function} A custom class, created from the provided main and extension classes
+*/
+Base.build = function(name, main, extensions, cfg) {
+var build = Base.build,
+builtClass = build._getClass(main, cfg),
+aggregates = build._getAggregates(main, cfg),
+dynamic = builtClass._yuibuild.dynamic,
+i, l, val, extClass;
+// Shallow isolate aggregates
+if (dynamic) {
+if (aggregates) {
+for (i = 0, l = aggregates.length; i < l; ++i) {
+val = aggregates[i];
+if (main.hasOwnProperty(val)) {
+builtClass[val] = L.isArray(main[val]) ? [] : {};
+}
+}
+Y.aggregate(builtClass, main, true, aggregates);
+}
+}
+// Augment/Aggregate
+for (i = 0, l = extensions.length; i < l; i++) {
+extClass = extensions[i];
+if (aggregates) {
+Y.aggregate(builtClass, extClass, true, aggregates);
+}
+// Old augment
+Y.mix(builtClass, extClass, true, null, 1);
+builtClass._yuibuild.exts.push(extClass);
+}
+builtClass.prototype.hasImpl = build._hasImpl;
+if (dynamic) {
+builtClass.NAME = name;
+builtClass.prototype.constructor = builtClass;
+}
+return builtClass;
+};
+Y.mix(Base.build, {
+_template: function(main) {
+function BuiltClass() {
+BuiltClass.superclass.constructor.apply(this, arguments);
+var f = BuiltClass._yuibuild.exts,
+l = f.length,
+i;
+for (i = 0; i < l; i++) {
+f[i].apply(this, arguments);
+}
+return this;
+}
+Y.extend(BuiltClass, main);
+return BuiltClass;
+},
+_hasImpl : function(extClass) {
+if (this.constructor._yuibuild) {
+var f = this.constructor._yuibuild.exts,
+l = f.length,
+i;
+for (i = 0; i < l; i++) {
+if (f[i] === extClass) {
+return true;
+}
+}
+}
+return false;
+},
+_getClass : function(main, cfg) {
+var dynamic = (cfg && false === cfg.dynamic) ? false : true,
+builtClass = (dynamic) ? Base.build._template(main) : main;
+builtClass._yuibuild = {
+id: null,
+exts : [],
+dynamic : dynamic
+};
+return builtClass;
+},
+_getAggregates : function(main, cfg) {
+var aggr = [],
+cfgAggr = (cfg && cfg.aggregates),
+c = main,
+classAggr;
+while (c && c.prototype) {
+classAggr = c._buildCfg && c._buildCfg.aggregates;
+if (classAggr) {
+aggr = aggr.concat(classAggr);
+}
+c = c.superclass ? c.superclass.constructor : null;
+}
+if (cfgAggr) {
+aggr = aggr.concat(cfgAggr);
+}
+return aggr;
+}
+});
+}, '3.0.0b1' ,{requires:['base-base']});
+YUI.add('base', function(Y){}, '3.0.0b1' ,{use:['base-base', 'base-build']});

comt