| /******************************************************************************* |
| * Copyright (c) 2011, 2012 EclipseSource and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * EclipseSource - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.rap.rwt.internal.lifecycle; |
| |
| import org.eclipse.rap.rwt.internal.service.ContextProvider; |
| import org.eclipse.rap.rwt.service.UISession; |
| import org.eclipse.swt.widgets.Display; |
| |
| |
| public class LifeCycleUtil { |
| private static final String ATTR_SESSION_DISPLAY |
| = LifeCycleUtil.class.getName() + "#sessionDisplay"; |
| private static final String ATTR_UI_THREAD = LifeCycleUtil.class.getName() + "#uiThread"; |
| |
| public static void setSessionDisplay( Display display ) { |
| ContextProvider.getUISession().setAttribute( ATTR_SESSION_DISPLAY, display ); |
| } |
| |
| public static Display getSessionDisplay() { |
| Display result = null; |
| if( ContextProvider.hasContext() ) { |
| UISession uiSession = ContextProvider.getUISession(); |
| result = getSessionDisplay( uiSession ); |
| } |
| return result; |
| } |
| |
| public static Display getSessionDisplay( UISession uiSession ) { |
| return ( Display )uiSession.getAttribute( ATTR_SESSION_DISPLAY ); |
| } |
| |
| public static void setUIThread( UISession uiSession, IUIThreadHolder threadHolder ) { |
| uiSession.setAttribute( ATTR_UI_THREAD, threadHolder ); |
| } |
| |
| public static IUIThreadHolder getUIThread( UISession uiSession ) { |
| return ( IUIThreadHolder )uiSession.getAttribute( ATTR_UI_THREAD ); |
| } |
| |
| static boolean isStartup() { |
| return getSessionDisplay() == null; |
| } |
| |
| private LifeCycleUtil() { |
| // prevent instantiation |
| } |
| } |