package snap.webapi;

/**

* This class is a wrapper for Web API Storage (https://developer.mozilla.org/en-US/docs/Web/API/Storage).

*/

public class Storage extends JSProxy {

// The local storage

private static Storage _localStorage;

/**

* Constructor.

*/

public Storage(Object programJS)

{

super(programJS);

}

public String getItem(String aKey) { return (String) call("getItem", aKey); }

public void setItem(String aKey, String aValue)

{

if (aValue == null)

removeItem(aKey);

else call("setItem", aKey, aValue);

}

public void removeItem(String aKey) { call("removeItem", aKey); }

public String getKey(int anIndex) { return (String) call("key", anIndex); }

public void clear() { call("clear"); }

/**

* Returns the shared local storage.

*/

public static Storage getLocalStorage()

{

if (_localStorage != null) return _localStorage;

Window window = Window.get();

Object localStorageJS = window.getMember("localStorage");

return _localStorage = new Storage(localStorageJS);

}

}