| /** |
| * Copyright (c) 2006 IBM Corporation. |
| * 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 Implementation |
| * |
| */ |
| package org.eclipse.ptp.remotetools.preferences; |
| |
| import org.eclipse.core.runtime.preferences.DefaultScope; |
| import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener; |
| import org.eclipse.core.runtime.preferences.IScopeContext; |
| import org.eclipse.core.runtime.preferences.InstanceScope; |
| import org.eclipse.ui.plugin.AbstractUIPlugin; |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * The main plugin class to be used in the desktop. |
| * |
| * @author Ricardo M. Matinata |
| * @since 1.1 |
| */ |
| public class PreferencesPlugin extends AbstractUIPlugin { |
| |
| private static String PLUGIN_ID = "org.eclipse.ptp.remotetools.preferences"; //$NON-NLS-1$ |
| |
| // The shared instance. |
| private static PreferencesPlugin fPlugin; |
| |
| private static final IScopeContext[] contexts = new IScopeContext[] { new DefaultScope(), new InstanceScope() }; |
| |
| private static final int DEFAULT_CONTEXT = 0; |
| private static final int INSTANCE_CONTEXT = 1; |
| |
| /** |
| * Returns the shared instance. |
| */ |
| public static PreferencesPlugin getDefault() { |
| return fPlugin; |
| } |
| |
| /** |
| * Generate a unique identifier |
| * |
| * @return unique identifier string |
| * @since 2.0 |
| */ |
| public static String getUniqueIdentifier() { |
| if (getDefault() == null) { |
| return PLUGIN_ID; |
| } |
| return getDefault().getBundle().getSymbolicName(); |
| } |
| |
| /** |
| * The constructor. |
| */ |
| public PreferencesPlugin() { |
| fPlugin = this; |
| } |
| |
| /** |
| * @since 2.0 |
| */ |
| public void addListener(IPreferenceChangeListener listener) { |
| contexts[DEFAULT_CONTEXT].getNode(getUniqueIdentifier()).addPreferenceChangeListener(listener); |
| contexts[INSTANCE_CONTEXT].getNode(getUniqueIdentifier()).addPreferenceChangeListener(listener); |
| } |
| |
| /** |
| * @since 2.0 |
| */ |
| public void removeListener(IPreferenceChangeListener listener) { |
| contexts[DEFAULT_CONTEXT].getNode(getUniqueIdentifier()).removePreferenceChangeListener(listener); |
| contexts[INSTANCE_CONTEXT].getNode(getUniqueIdentifier()).removePreferenceChangeListener(listener); |
| } |
| |
| /** |
| * This method is called upon plug-in activation |
| * |
| * @since 2.0 |
| */ |
| @Override |
| public void start(BundleContext context) throws Exception { |
| super.start(context); |
| } |
| |
| /** |
| * This method is called when the plug-in is stopped |
| */ |
| @Override |
| public void stop(BundleContext context) throws Exception { |
| try { |
| contexts[DEFAULT_CONTEXT].getNode(getUniqueIdentifier()).flush(); |
| contexts[INSTANCE_CONTEXT].getNode(getUniqueIdentifier()).flush(); |
| } finally { |
| super.stop(context); |
| fPlugin = null; |
| } |
| } |
| } |