/*******************************************************************************
* Copyright (c) 2000, 2006 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 java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.util.HashMap;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.IEditorDescriptor;
import org.eclipse.ui.IEditorRegistry;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferenceConstants;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.WorkbenchException;
import org.eclipse.ui.internal.decorators.DecoratorManager;
import org.eclipse.ui.internal.progress.ProgressManager;
import org.eclipse.ui.internal.registry.EditorRegistry;
import org.eclipse.ui.internal.util.PrefUtil;
/**
* The PlatformUIPreferenceListener is a class that listens to changes in the
* preference store and propogates the change for any special cases that require
* updating of other values within the workbench.
*/
public class PlatformUIPreferenceListener implements
IEclipsePreferences.IPreferenceChangeListener {
private static PlatformUIPreferenceListener singleton;
public static IEclipsePreferences.IPreferenceChangeListener getSingleton(){
if(singleton == null) {
singleton = new PlatformUIPreferenceListener();
}
return singleton;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener#preferenceChange(org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent)
*/
public void preferenceChange(PreferenceChangeEvent event) {
String propertyName = event.getKey();
if (IPreferenceConstants.ENABLED_DECORATORS.equals(propertyName)) {
DecoratorManager manager = WorkbenchPlugin.getDefault()
.getDecoratorManager();
manager.applyDecoratorsPreference();
manager.clearCaches();
manager.updateForEnablementChange();
return;
}
if (IWorkbenchPreferenceConstants.SHOW_SYSTEM_JOBS.equals(propertyName)) {
boolean setting = PrefUtil.getAPIPreferenceStore().getBoolean(
IWorkbenchPreferenceConstants.SHOW_SYSTEM_JOBS);
ProgressManager.getInstance().setShowSystemJobs(setting);
}
if (IWorkbenchPreferenceConstants.DEFAULT_PERSPECTIVE_ID.equals(propertyName)) {
IWorkbench workbench = PlatformUI.getWorkbench();
workbench.getPerspectiveRegistry().setDefaultPerspective(
PrefUtil.getAPIPreferenceStore().getString(
IWorkbenchPreferenceConstants.DEFAULT_PERSPECTIVE_ID));
return;
}
if (IWorkbenchPreferenceConstants.DOCK_PERSPECTIVE_BAR
.equals(propertyName)) {
IPreferenceStore apiStore = PrefUtil.getAPIPreferenceStore();
IWorkbench workbench = PlatformUI.getWorkbench();
IWorkbenchWindow[] workbenchWindows = workbench
.getWorkbenchWindows();
for (int i = 0; i < workbenchWindows.length; i++) {
IWorkbenchWindow window = workbenchWindows[i];
if (window instanceof WorkbenchWindow) {
((WorkbenchWindow) window)
.setPerspectiveBarLocation(apiStore
.getString(IWorkbenchPreferenceConstants.DOCK_PERSPECTIVE_BAR));
}
}
return;
}
// TODO the banner apperance should have its own preference
if (IWorkbenchPreferenceConstants.SHOW_TRADITIONAL_STYLE_TABS
.equals(propertyName)) {
boolean newValue = PrefUtil.getAPIPreferenceStore().getBoolean(
IWorkbenchPreferenceConstants.SHOW_TRADITIONAL_STYLE_TABS);
IWorkbench workbench = PlatformUI.getWorkbench();
IWorkbenchWindow[] workbenchWindows = workbench
.getWorkbenchWindows();
for (int i = 0; i < workbenchWindows.length; i++) {
IWorkbenchWindow window = workbenchWindows[i];
if (window instanceof WorkbenchWindow) {
((WorkbenchWindow) window).setBannerCurve(newValue);
}
}
return;
}
// Update the file associations if they have changed due to an import
if (IPreferenceConstants.RESOURCES.equals(propertyName)) {
IEditorRegistry registry = WorkbenchPlugin.getDefault()
.getEditorRegistry();
if (registry instanceof EditorRegistry) {
EditorRegistry editorRegistry = (EditorRegistry) registry;
IPreferenceStore store = WorkbenchPlugin.getDefault()
.getPreferenceStore();
Reader reader = null;
try {
String xmlString = store
.getString(IPreferenceConstants.RESOURCES);
if (xmlString != null && xmlString.length() > 0) {
reader = new StringReader(xmlString);
// Build the editor map.
HashMap editorMap = new HashMap();
int i = 0;
IEditorDescriptor[] descriptors = editorRegistry
.getSortedEditorsFromPlugins();
// Get the internal editors
for (i = 0; i < descriptors.length; i++) {
IEditorDescriptor descriptor = descriptors[i];
editorMap.put(descriptor.getId(), descriptor);
}
// Get the external (OS) editors
descriptors = editorRegistry.getSortedEditorsFromOS();
for (i = 0; i < descriptors.length; i++) {
IEditorDescriptor descriptor = descriptors[i];
editorMap.put(descriptor.getId(), descriptor);
}
// Update the file to editor(s) mappings
editorRegistry.readResources(editorMap, reader);
}
} catch (WorkbenchException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
}
}