/* YUI 3.9.1 (build 5852) Copyright 2013 Yahoo! Inc. http://yuilibrary.com/license/ */
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YUI.add('cache-offline', function (Y, NAME) {

/**
 * Provides a Cache subclass which uses HTML5 `localStorage` for persistence.
 * 
 * @module cache
 * @submodule cache-offline
 */

/**
 * Extends Cache utility with offline functionality.
 * @class CacheOffline
 * @extends Cache
 * @constructor
 */
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}

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var localStorage = null,
    JSON = Y.JSON;

// Bug 2529572
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try {
    _yuitest_coverline("build/cache-offline/cache-offline.js", 25);
localStorage = Y.config.win.localStorage;
}
catch(e) {
}

/////////////////////////////////////////////////////////////////////////////
//
// CacheOffline events
//
/////////////////////////////////////////////////////////////////////////////

/**
* @event error
* @description Fired when an entry could not be added, most likely due to
* exceeded browser quota.
* <dl>
* <dt>error (Object)</dt> <dd>The error object.</dd>
* </dl>
*/

/////////////////////////////////////////////////////////////////////////////
//
// CacheOffline static
//
/////////////////////////////////////////////////////////////////////////////
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Y.mix(CacheOffline, {
    /**
     * Class name.
     *
     * @property NAME
     * @type String
     * @static
     * @final
     * @value "cacheOffline"
     */
    NAME: "cacheOffline",

    ATTRS: {
        /////////////////////////////////////////////////////////////////////////////
        //
        // CacheOffline Attributes
        //
        /////////////////////////////////////////////////////////////////////////////

        /**
        * @attribute sandbox
        * @description A string that must be passed in via the constructor.
        * This identifier is used to sandbox one cache instance's entries
        * from another. Calling the cache instance's flush and length methods
        * or get("entries") will apply to only these sandboxed entries.
        * @type String
        * @default "default"
        * @initOnly
        */
        sandbox: {
            value: "default",
            writeOnce: "initOnly"
        },

        /**
        * @attribute expires
        * @description Absolute Date when data expires or
        * relative number of milliseconds. Zero disables expiration.
        * @type Date | Number
        * @default 86400000 (one day)
        */
        expires: {
            value: 86400000
        },

        /**
        * @attribute max
        * @description Disabled.
        * @readOnly
        * @default null
        */
        max: {
            value: null,
            readOnly: true
        },

        /**
        * @attribute uniqueKeys
        * @description Always true for CacheOffline.
        * @readOnly
        * @default true
        */
        uniqueKeys: {
            value: true,
            readOnly: true,
            setter: function() {
                _yuitest_coverfunc("build/cache-offline/cache-offline.js", "setter", 115);
_yuitest_coverline("build/cache-offline/cache-offline.js", 116);
return true;
            }
        }
    },

    /**
     * Removes all items from all sandboxes. Useful if localStorage has
     * exceeded quota. Only supported on browsers that implement HTML 5
     * localStorage.
     *
     * @method flushAll
     * @static
     */
    flushAll: function() {
        _yuitest_coverfunc("build/cache-offline/cache-offline.js", "flushAll", 129);
_yuitest_coverline("build/cache-offline/cache-offline.js", 130);
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            _yuitest_coverline("build/cache-offline/cache-offline.js", 132);
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Y.extend(CacheOffline, Y.Cache, localStorage ? {
/////////////////////////////////////////////////////////////////////////////
//
// Offline is supported
//
/////////////////////////////////////////////////////////////////////////////

    /////////////////////////////////////////////////////////////////////////////
    //
    // CacheOffline protected methods
    //
    /////////////////////////////////////////////////////////////////////////////
    /**
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     *
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     */
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    },

    /**
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     *
     * @method _getSize
     * @protected
     */
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    /**
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    /**
     * Flushes cache.
     *
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            }
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    },

    /////////////////////////////////////////////////////////////////////////////
    //
    // CacheOffline public methods
    //
    /////////////////////////////////////////////////////////////////////////////
    /**
     * Adds a new entry to the cache of the format
     * {request:request, response:response, cached:cached, expires: expires}.
     *
     * @method add
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     * @param response {Object} Response value must be a String or JSON.
     */

    /**
     * Retrieves cached object for given request, if available.
     * Returns null if there is no cache match.
     *
     * @method retrieve
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     * @return {Object} Cached object with the properties request, response,
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     */
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try {
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return entry;
            }
        }
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return null;
    }
} :
/////////////////////////////////////////////////////////////////////////////
//
// Offline is not supported
//
/////////////////////////////////////////////////////////////////////////////
{
    /**
     * Always return null.
     *
     * @method _setMax
     * @protected
     */
    _setMax: function(value) {
        _yuitest_coverfunc("build/cache-offline/cache-offline.js", "_setMax", 324);
_yuitest_coverline("build/cache-offline/cache-offline.js", 325);
return null;
    }
});


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Y.CacheOffline = CacheOffline;


}, '3.9.1', {"requires": ["cache-base", "json"]});
