Package org.eclipse.ui.internal

Source Code of org.eclipse.ui.internal.JFaceUtil

/*******************************************************************************
* Copyright (c) 2005, 2007 IBM Corporation 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:
*     IBM Corporation - initial API and implementation
*******************************************************************************/

package org.eclipse.ui.internal;

import org.eclipse.core.runtime.ISafeRunnable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.NodeChangeEvent;
import org.eclipse.jface.internal.InternalPolicy;
import org.eclipse.jface.preference.JFacePreferences;
import org.eclipse.jface.util.ILogger;
import org.eclipse.jface.util.ISafeRunnableRunner;
import org.eclipse.jface.util.Policy;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.ui.statushandlers.StatusManager;

/**
* Utility class for setting up JFace for use by Eclipse.
*
* @since 3.1
*/
final class JFaceUtil {

  private JFaceUtil() {
    // prevents intantiation
  }

  /**
   * Initializes JFace for use by Eclipse.
   */
  public static void initializeJFace() {
    // Set the Platform to run all SafeRunnables
    SafeRunnable.setRunner(new ISafeRunnableRunner() {
      public void run(ISafeRunnable code) {
        Platform.run(code);
      }
    });

    // Pass all errors and warnings to the status handling facility
    // and the rest to the main runtime log
    Policy.setLog(new ILogger() {
      public void log(IStatus status) {
        if (status.getSeverity() == IStatus.WARNING
            || status.getSeverity() == IStatus.ERROR) {
          StatusManager.getManager().handle(status);
        } else {
          WorkbenchPlugin.log(status);
        }
      }
    });


    // Get all debug options from Platform
    if ("true".equalsIgnoreCase(Platform.getDebugOption("/debug"))) { //$NON-NLS-1$ //$NON-NLS-2$
      Policy.DEBUG_DIALOG_NO_PARENT = "true".equalsIgnoreCase(Platform.getDebugOption(Policy.JFACE + "/debug/dialog/noparent")); //$NON-NLS-1$ //$NON-NLS-2$
      Policy.TRACE_ACTIONS = "true".equalsIgnoreCase(Platform.getDebugOption(Policy.JFACE + "/trace/actions")); //$NON-NLS-1$ //$NON-NLS-2$
      Policy.TRACE_TOOLBAR = "true".equalsIgnoreCase(Platform.getDebugOption(Policy.JFACE + "/trace/toolbarDisposal")); //$NON-NLS-1$ //$NON-NLS-2$
      InternalPolicy.DEBUG_LOG_REENTRANT_VIEWER_CALLS = "true".equalsIgnoreCase(Platform.getDebugOption(Policy.JFACE + "/debug/viewers/reentrantViewerCalls")); //$NON-NLS-1$ //$NON-NLS-2$
    }
  }

  /**
   * Adds a preference listener so that the JFace preference store is initialized
   * as soon as the workbench preference store becomes available.
   */
  public static void initializeJFacePreferences() {
    IEclipsePreferences rootNode = (IEclipsePreferences) Platform.getPreferencesService().getRootNode().node(InstanceScope.SCOPE);
    final String workbenchName = WorkbenchPlugin.getDefault().getBundle().getSymbolicName();
   
    rootNode.addNodeChangeListener(new IEclipsePreferences.INodeChangeListener() {
      /*
       * (non-Javadoc)
       *
       * @see org.eclipse.core.runtime.preferences.IEclipsePreferences.INodeChangeListener#added(org.eclipse.core.runtime.preferences.IEclipsePreferences.NodeChangeEvent)
       */
      public void added(NodeChangeEvent event) {
        if (!event.getChild().name().equals(workbenchName)) {
          return;
        }
        ((IEclipsePreferences) event.getChild()).addPreferenceChangeListener(PlatformUIPreferenceListener.getSingleton());

      }
      /*
       * (non-Javadoc)
       *
       * @see org.eclipse.core.runtime.preferences.IEclipsePreferences.INodeChangeListener#removed(org.eclipse.core.runtime.preferences.IEclipsePreferences.NodeChangeEvent)
       */
      public void removed(NodeChangeEvent event) {
        // Nothing to do here

      }
    });
   
    JFacePreferences.setPreferenceStore(WorkbenchPlugin.getDefault().getPreferenceStore());
  }
}
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