snappymail/dev/Storages/LocalStorages/LocalStorageDriver.js

/* RainLoop Webmail (c) RainLoop Team | Licensed under CC BY-NC-SA 3.0 */

/**
 * @constructor
 */
function LocalStorageDriver()
{
}

LocalStorageDriver.supported = function ()
{
	return !!window.localStorage;
};


/**
 * @param {string} sKey
 * @param {*} mData
 * @returns {boolean}
 */
LocalStorageDriver.prototype.set = function (sKey, mData)
{
	var
		mCokieValue = window.localStorage[Consts.Values.ClientSideCookieIndexName] || null,
		bResult = false,
		mResult = null
	;

	try
	{
		mResult = null === mCokieValue ? null : JSON.parse(mCokieValue);
		if (!mResult)
		{
			mResult = {};
		}

		mResult[sKey] = mData;
		window.localStorage[Consts.Values.ClientSideCookieIndexName] = JSON.stringify(mResult);

		bResult = true;
	}
	catch (oException) {}

	return bResult;
};

/**
 * @param {string} sKey
 * @returns {*}
 */
LocalStorageDriver.prototype.get = function (sKey)
{
	var
		mCokieValue = window.localStorage[Consts.Values.ClientSideCookieIndexName] || null,
		mResult = null
	;

	try
	{
		mResult = null === mCokieValue ? null : JSON.parse(mCokieValue);
		if (mResult && !Utils.isUnd(mResult[sKey]))
		{
			mResult = mResult[sKey];
		}
		else
		{
			mResult = null;
		}
	}
	catch (oException) {}

	return mResult;
};