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Code Editor : base-base.js

/*
YUI 3.17.2 (build 9c3c78e)
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/

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;

/**
 * 
 * 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.
 * 
 *
 * 
 * **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).
 * 
 *
 * 
 * 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.
 * 
 *
 * @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.
 *
 * 
 * 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:
 * 
 *
 * <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);

/**
 * 
 * The string to be used to identify instances of
 * this class, for example in prefixing events.
 * 
 * 
 * Classes extending Base, should define their own
 * static NAME property, which should be camelCase by
 * convention (e.g. MyClass.NAME = "myClass";).
 * 
 * @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;

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

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Code Editor : base-base.js