org.eclipse.emf.ecp.makeithappen.application.sample.rap.j2ee.RealmSetter.java Source code

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Here is the source code for org.eclipse.emf.ecp.makeithappen.application.sample.rap.j2ee.RealmSetter.java

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/*******************************************************************************
 * Copyright (c) 2011-2014 EclipseSource Muenchen GmbH 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 Munich - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.ecp.makeithappen.application.sample.rap.j2ee;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.rap.rwt.RWT;
import org.eclipse.rap.rwt.internal.application.ApplicationContextImpl;
import org.eclipse.rap.rwt.service.UISession;
import org.eclipse.swt.widgets.Display;

/**
 * Realm Setter. Is needed as the J2EE Mode doesn't have a Realm by default.
 */
public final class RealmSetter {

    private RealmSetter() {
    }

    /**
     * Set the default Realm.
     *
     * @param realm the Realm to set
     */

    public static void setRealm(Realm realm) {
        try {
            final Class<Realm> clazz = Realm.class;
            final Method method = clazz.getDeclaredMethod("setDefault", clazz); //$NON-NLS-1$
            method.setAccessible(true);
            method.invoke(null, new Object[] { realm });
        } catch (final NoSuchMethodException ex) {
            ex.printStackTrace();
        } catch (final SecurityException ex) {
            ex.printStackTrace();
        } catch (final IllegalAccessException ex) {
            ex.printStackTrace();
        } catch (final IllegalArgumentException ex) {
            ex.printStackTrace();
        } catch (final InvocationTargetException ex) {
            ex.printStackTrace();
        }
    }

    /**
     * Initialize the RealmSetter.
     */
    public static void initialize() {
        final UISession uiSession = RWT.getUISession();
        ApplicationContextImpl.class.cast(RWT.getApplicationContext()).getPhaseListenerManager()
                .addPhaseListener(new DataBindingPhaseListener());
        if (uiSession.getAttribute("realm") == null) { //$NON-NLS-1$
            final Realm realm = SWTObservables.getRealm(Display.getCurrent());
            RealmSetter.setRealm(realm);
            RWT.getUISession().setAttribute("realm", realm); //$NON-NLS-1$
        }
    }

}