| /******************************************************************************* |
| * 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.preferences; |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.preferences.IEclipsePreferences; |
| import org.eclipse.ui.internal.preferences.WorkingCopyPreferences; |
| import org.osgi.service.prefs.BackingStoreException; |
| |
| /** |
| * WorkingCopyManager is a concrete implementation of an |
| * IWorkingCopyManager. |
| * <p> |
| * This class is not intended to be sub-classed by clients. |
| * </p> |
| * @since 3.2 |
| */ |
| public class WorkingCopyManager implements IWorkingCopyManager{ |
| |
| private static final String EMPTY_STRING = "";//$NON-NLS-1$ |
| // all working copies - maps absolute path to PreferencesWorkingCopy instance |
| private Map workingCopies = new HashMap(); |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.preferences.IWorkingCopyManager#getWorkingCopy(org.eclipse.core.runtime.preferences.IEclipsePreferences) |
| */ |
| public IEclipsePreferences getWorkingCopy(IEclipsePreferences original) { |
| if (original instanceof WorkingCopyPreferences) { |
| throw new IllegalArgumentException("Trying to get a working copy of a working copy"); //$NON-NLS-1$ |
| } |
| String absolutePath = original.absolutePath(); |
| IEclipsePreferences preferences = (IEclipsePreferences) workingCopies.get(absolutePath); |
| if (preferences == null) { |
| preferences = new WorkingCopyPreferences(original, this); |
| workingCopies.put(absolutePath, preferences); |
| } |
| return preferences; |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.preferences.IWorkingCopyManager#applyChanges() |
| */ |
| public void applyChanges() throws BackingStoreException { |
| Collection values = workingCopies.values(); |
| WorkingCopyPreferences[] valuesArray = (WorkingCopyPreferences[]) values.toArray(new WorkingCopyPreferences[values.size()]); |
| for (int i = 0; i < valuesArray.length; i++) { |
| WorkingCopyPreferences prefs = valuesArray[i]; |
| if (prefs.nodeExists(EMPTY_STRING)) |
| prefs.flush(); |
| } |
| } |
| |
| } |