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YUI.add('base-base', function (Y, NAME) {

    /**

     * 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 - It augments Base with the Plugin.Host interface which provides

     * plugin support and also provides the BaseCore.build method which provides a way to build custom classes using extensions.

     *

     * @module base

     */

    /**

     * The base-base submodule provides the Base class without the Plugin support, provided by Plugin.Host,

     * and without the extension support provided by BaseCore.build.

     *

     * @module base

     * @submodule base-base

     */

    var AttributeCore   = Y.AttributeCore,

        AttributeExtras = Y.AttributeExtras,

        BaseCore        = Y.BaseCore,

        BaseObservable  = Y.BaseObservable;

    /**

     * <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_ATTRS">ATTRS</a> property for each class

     * in the hierarchy will be initialized by Base.

     * </p>

     *

     * <p>

     * **NOTE:** Prior to version 3.11.0, ATTRS would get added a class at a time. That is,

     * Base would loop through each class in the hierarchy, and add the class' ATTRS, and

     * then call it's initializer, and move on to the subclass' ATTRS and initializer. As of

     * 3.11.0, ATTRS from all classes in the hierarchy are added in one `addAttrs` call before

     * any initializers are called. This fixes subtle edge-case issues with subclass ATTRS overriding

     * superclass `setter`, `getter` or `valueFn` definitions and being unable to get/set attributes

     * defined by the subclass. This order of operation change may impact `setter`, `getter` or `valueFn`

     * code which expects a superclass' initializer to have run. This is expected to be rare, but to support

     * it, Base supports a `_preAddAttrs()`, method hook (same signature as `addAttrs`). Components can

     * implement this method on their prototype for edge cases which do require finer control over

     * the order in which attributes are added (see widget-htmlparser).

     * </p>

     *

     * <p>

     * The static <a href="#property_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 BaseCore

     * @uses BaseObservable

     * @uses AttributeCore

     * @uses AttributeObservable

     * @uses AttributeExtras

     * @uses EventTarget

     *

     * @param {Object} config Object with configuration property name/value pairs. The object can be

     * used to provide default values for the objects published attributes.

     *

     * <p>

     * The config object can also contain the following non-attribute properties, providing a convenient

     * way to configure events listeners and plugins for the instance, as part of the constructor call:

     * </p>

     *

     * <dl>

     *   <dt>on</dt>

     *   <dd>An event name to listener function map, to register event listeners for the "on" moment of the event.

     *       A constructor convenience property for the <a href="Base.html#method_on">on</a> method.</dd>

     *   <dt>after</dt>

     *   <dd>An event name to listener function map, to register event listeners for the "after" moment of the event.

     *       A constructor convenience property for the <a href="Base.html#method_after">after</a> method.</dd>

     *   <dt>bubbleTargets</dt>

     *   <dd>An object, or array of objects, to register as bubble targets for bubbled events fired by this instance.

     *       A constructor convenience property for the <a href="EventTarget.html#method_addTarget">addTarget</a> method.</dd>

     *   <dt>plugins</dt>

     *   <dd>A plugin, or array of plugins to be plugged into the instance (see PluginHost's plug method for signature details).

     *       A constructor convenience property for the <a href="Plugin.Host.html#method_plug">plug</a> method.</dd>

     * </dl>

     */

    function Base() {

        BaseCore.apply(this, arguments);

        BaseObservable.apply(this, arguments);

        AttributeExtras.apply(this, arguments);

    }

    /**

     * The list of properties which can be configured for

     * each attribute (e.g. setter, getter, writeOnce, readOnly etc.)

     *

     * @property _ATTR_CFG

     * @type Array

     * @static

     * @private

     */

    Base._ATTR_CFG = BaseCore._ATTR_CFG.concat(BaseObservable._ATTR_CFG);

    /**

     * The array of non-attribute configuration properties supported by this class.

     *

     * `Base` supports "on", "after", "plugins" and "bubbleTargets" properties,

     * which are not set up as attributes.

     *

     * This property is primarily required so that when

     * <a href="#property__allowAdHocAttrs">`_allowAdHocAttrs`</a> is enabled by

     * a class, non-attribute configurations don't get added as ad-hoc attributes.

     *

     * @property _NON_ATTRS_CFG

     * @type Array

     * @static

     * @private

     */

    Base._NON_ATTRS_CFG = BaseCore._NON_ATTRS_CFG.concat(BaseObservable._NON_ATTRS_CFG);

    /**

     * <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 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 ATTRS

     * @type Object

     * @static

     */

    Base.ATTRS = AttributeCore.protectAttrs(BaseCore.ATTRS);

    /**

    Provides a way to safely modify a `Y.Base` subclass' static `ATTRS` after

    the class has been defined or created.

    Base-based classes cache information about the class hierarchy in order to

    efficiently create instances. This cache includes includes the aggregated

    `ATTRS` configs. If the static `ATTRS` configs need to be modified after the

    class has been defined or create, then use this method which will make sure

    to clear any cached data before making any modifications.

    @method modifyAttrs

    @param {Function} [ctor] The constructor function whose `ATTRS` should be

        modified. If a `ctor` function is not specified, then `this` is assumed

        to be the constructor which hosts the `ATTRS`.

    @param {Object} configs The collection of `ATTRS` configs to mix with the

        existing attribute configurations.

    @static

    @since 3.10.0

    **/

    Base.modifyAttrs = BaseCore.modifyAttrs;

    Y.mix(Base, BaseCore, false, null, 1);

    Y.mix(Base, AttributeExtras, false, null, 1);

    // Needs to be `true`, to overwrite methods from `BaseCore`.

    Y.mix(Base, BaseObservable, true, null, 1);

    // Fix constructor

    Base.prototype.constructor = Base;

    Y.Base = Base;

}, '3.18.1', {"requires": ["attribute-base", "base-core", "base-observable"]});