/*******************************************************************************
* Copyright (c) 2000, 2008 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.pdtextensions.core.ui.preferences;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ProjectScope;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.preferences.DefaultScope;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IScopeContext;
import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.ui.preferences.IWorkingCopyManager;
import org.osgi.service.prefs.BackingStoreException;
/**
*
*/
public class PreferencesAccess {
public static PreferencesAccess getOriginalPreferences() {
return new PreferencesAccess();
}
public static PreferencesAccess getWorkingCopyPreferences(
IWorkingCopyManager workingCopyManager) {
return new WorkingCopyPreferencesAccess(workingCopyManager);
}
private PreferencesAccess() {
// can only extends in this file
}
public IScopeContext getDefaultScope() {
return new DefaultScope();
}
public IScopeContext getInstanceScope() {
return new InstanceScope();
}
public IScopeContext getProjectScope(IProject project) {
return new ProjectScope(project);
}
/**
* Applies the changes
*
* @throws BackingStoreException thrown when the changes could not be applied
*/
public void applyChanges() throws BackingStoreException {
}
private static class WorkingCopyPreferencesAccess extends PreferencesAccess {
private final IWorkingCopyManager fWorkingCopyManager;
private WorkingCopyPreferencesAccess(
IWorkingCopyManager workingCopyManager) {
fWorkingCopyManager = workingCopyManager;
}
private final IScopeContext getWorkingCopyScopeContext(
IScopeContext original) {
return new WorkingCopyScopeContext(fWorkingCopyManager, original);
}
public IScopeContext getDefaultScope() {
return getWorkingCopyScopeContext(super.getDefaultScope());
}
public IScopeContext getInstanceScope() {
return getWorkingCopyScopeContext(super.getInstanceScope());
}
public IScopeContext getProjectScope(IProject project) {
return getWorkingCopyScopeContext(super.getProjectScope(project));
}
/* (non-Javadoc)
* @see org.eclipse.jdt.internal.ui.preferences.PreferencesAccess#applyChanges()
*/
public void applyChanges() throws BackingStoreException {
fWorkingCopyManager.applyChanges();
}
}
private static class WorkingCopyScopeContext implements IScopeContext {
private final IWorkingCopyManager fWorkingCopyManager;
private final IScopeContext fOriginal;
public WorkingCopyScopeContext(IWorkingCopyManager workingCopyManager,
IScopeContext original) {
fWorkingCopyManager = workingCopyManager;
fOriginal = original;
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.preferences.IScopeContext#getName()
*/
public String getName() {
return fOriginal.getName();
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.preferences.IScopeContext#getNode(java.lang.String)
*/
public IEclipsePreferences getNode(String qualifier) {
return fWorkingCopyManager.getWorkingCopy(fOriginal
.getNode(qualifier));
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.preferences.IScopeContext#getLocation()
*/
public IPath getLocation() {
return fOriginal.getLocation();
}
}
}