Didn't work for me. My working alternative: Write in LocalStorage: ``` pub

Directory ClientStorage Add-on for Vaadin 8
1

Didn’t work for me.
My working alternative:

Write in LocalStorage:

public static boolean setHtml5LocalStorageValue(String key, String value)
{
	if( !Html5LocalStorageValueSupport )
		return false;

	JavaScript.getCurrent().execute
	(
		String.format
		(
			"localStorage.setItem('%s','%s');",
			key, value
		)
	);

	return true;
}

Read From Local Storage:

static final boolean Html5LocalStorageValueSupport = true;

public interface Closure { public void execute(String value); }

private static void detectLocalStorageValue(String key, final Closure callback)
{
	final String callbackid = "LocalStorage"+UUID.randomUUID().toString().substring(0,8);
	JavaScript.getCurrent().addFunction
	(
		callbackid,
		new JavaScriptFunction()
		{
			private static final long serialVersionUID = -3426072590182105863L;

			@Override
			public void call(JsonArray arguments)
			{
				JavaScript.getCurrent().removeFunction(callbackid);
				callback.execute(arguments.length() == 0 ? null : arguments.getString(0));
			}
		}
	);

	String javaScriptCommand =
	String.format
	(
		"var nameEQ=\"%2$s\";var c=localStorage.getItem(nameEQ); if(c==null) %1$s(''); else %1$s(c);",
		callbackid,
		key
	);
	JavaScript.getCurrent().execute(javaScriptCommand);

}

public static boolean getHtml5LocalStorageValue
(
	String key,
	Closure callBack
)
{
	if( !Html5LocalStorageValueSupport )
		return false;

	detectLocalStorageValue(key, callBack);
	return true;
}