/*
* Copyright 2007 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.user.client;
/**
* Implement this interface to receive closing events from the browser window.
*
* @see com.google.gwt.user.client.Window#addWindowCloseListener(WindowCloseListener)
* @deprecated use {@link Window.ClosingHandler} and
* {@link com.google.gwt.event.logical.shared.CloseHandler} instead
*
*/
@Deprecated
public interface WindowCloseListener extends java.util.EventListener {
/**
* Fired just before the browser window closes or navigates to a different
* site. No user-interface may be displayed during shutdown.
*
* @return non-<code>null</code> to present a confirmation dialog that asks
* the user whether or not she wishes to navigate away from the page.
* The string returned will be displayed in the close confirmation
* dialog box. If multiple listeners return messages, the first will
* be displayed; all others will be ignored.
*/
@Deprecated
String onWindowClosing();
/**
* Fired after the browser window closes or navigates to a different site.
* This event cannot be canceled, and is used mainly to clean up application
* state and/or save state to the server.
*/
@Deprecated
void onWindowClosed();
}