/*******************************************************************************
* Copyright (c) 2009,2016 QNX Software Systems
* 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:
* QNX Software Systems (Alena Laskavaia) - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.codan.examples.uicontrib;
import org.eclipse.cdt.codan.core.CodanCorePlugin;
import org.eclipse.cdt.codan.examples.Activator;
import org.eclipse.cdt.codan.examples.checkers.GrepChecker;
import org.eclipse.cdt.codan.internal.core.CodanPreferencesLoader;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.INodeChangeListener;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.NodeChangeEvent;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
/**
* Example of property change listener for changing error profiles using eclipse preferences.
* Too see debug prints uncomment printout line in {@link #trace(String) function }
* In this examples plugin this listener is activated on startup by calling ProfileChangeListener.getInstance(), see
* {@link Activator#start(org.osgi.framework.BundleContext)}
* Note: this example will not properly listen on properties for new or deleted projects
*/
public class GrepCheckerExamplePreferenceChangeListener implements INodeChangeListener, IPreferenceChangeListener {
static GrepCheckerExamplePreferenceChangeListener instance;
public static GrepCheckerExamplePreferenceChangeListener getInstance() {
if (instance == null)
instance = new GrepCheckerExamplePreferenceChangeListener();
return instance;
}
private IProject project;
private GrepCheckerExamplePreferenceChangeListener(IProject project) {
this.project = project;
}
private GrepCheckerExamplePreferenceChangeListener() {
CodanCorePlugin.getDefault().getStorePreferences().addNodeChangeListener(this);
CodanCorePlugin.getDefault().getStorePreferences().addPreferenceChangeListener(this);
IWorkspace root = ResourcesPlugin.getWorkspace();
IProject[] projects = root.getRoot().getProjects();
for (int i = 0; i < projects.length; i++) {
IProject project = projects[i];
IEclipsePreferences prefs = CodanPreferencesLoader.getProjectNode(project);
if (prefs != null)
prefs.addPreferenceChangeListener(new GrepCheckerExamplePreferenceChangeListener(project));
}
}
@Override
public void preferenceChange(PreferenceChangeEvent event) {
if (event.getSource() instanceof IEclipsePreferences) {
//IEclipsePreferences ep = (IEclipsePreferences) event.getSource();
if (GrepChecker.ID.equals(event.getKey())) {
// severity or enablement has changed
String val = (String) event.getNewValue();
String fors = (" for " + ((project == null) ? "workspace" : project.getName()));
if (val != null && !val.startsWith("-")) {
trace("grep checker enabled :)"+fors);
} else {
trace("grep checker disabled :("+fors);
}
}
}
}
private void trace(String message) {
// NOTE: uncomment this to see what this guy is listening on
// System.err.print("example codan pref listener: " + message);
}
@Override
public void added(NodeChangeEvent event) {
trace("node added " + event);
}
@Override
public void removed(NodeChangeEvent event) {
trace("node removed " + event);
}
/**
*
*/
public void dispose() {
CodanCorePlugin.getDefault().getStorePreferences().removeNodeChangeListener(this);
CodanCorePlugin.getDefault().getStorePreferences().removePreferenceChangeListener(this);
}
}