gov.nasa.ensemble.emf.transaction.FixedUITransactionEditingDomain.java Source code

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Here is the source code for gov.nasa.ensemble.emf.transaction.FixedUITransactionEditingDomain.java

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/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 * 
 * 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 gov.nasa.ensemble.emf.transaction;

import gov.nasa.ensemble.common.logging.LogUtil;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogBlockedHandler;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;

/* package */class FixedUITransactionEditingDomain extends FixedTransactionEditingDomain {

    static {
        if (PlatformUI.isWorkbenchRunning()) { // check for JUnit
            Display display = Display.findDisplay(Thread.currentThread());
            if (display != null) {
                hideBlockedDialog();
            } else {
                display = PlatformUI.getWorkbench().getDisplay();
                if (display != null) {
                    display.asyncExec(new Runnable() {
                        @Override
                        public void run() {
                            hideBlockedDialog();
                        }
                    });
                } else {
                    LogUtil.warn("The workbench had no display, could not suppress the default blocked handler.");
                }
            }
        }
    }

    private static void hideBlockedDialog() {
        // first instantiate ProgressManager, and set the blocked handler there
        PlatformUI.getWorkbench().getProgressService();
        IDialogBlockedHandler oldHandler = Dialog.getBlockedHandler();
        // override it with our chosen handler
        Dialog.setBlockedHandler(new NoDialogBlockedHandler());
        // then clear it if it was up
        oldHandler.clearBlocked();
    }

    private TransactionDisplayThread thread = new TransactionDisplayThread(this);

    FixedUITransactionEditingDomain(AdapterFactory adapterFactory) {
        super(adapterFactory);
    }

    @Override
    public void dispose() {
        thread.quit();
        super.dispose();
    }

    public void queueWriting(Control control, Runnable runnable) {
        thread.queueWriting(control, runnable);
    }

    public void queueReading(Control control, Runnable runnable) {
        thread.queueReading(control, runnable);
    }

}