/*
* Copyright (c) 2012 European Synchrotron Radiation Facility,
* Diamond Light Source Ltd.
*
* 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
*/
package fable.python.rcp;
import org.dawb.fabio.FableJep;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;
import fable.python.jep.IPythonVarKeys;
import fable.python.preferences.PreferenceConstants;
/**
* The activator class controls the plug-in life cycle
*/
public class Activator extends AbstractUIPlugin implements IPythonVarKeys {
private IPreferenceStore prefs;
private IPropertyChangeListener listener;
// The plug-in ID
public static final String PLUGIN_ID = "org.dawb.fable.python";
// The shared instance
private static Activator plugin;
/**
* The constructor
*/
public Activator() {
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext
* )
*/
public void start(BundleContext context) throws Exception {
super.start(context);
plugin = this;
// DEBUG
prefs = Activator.getDefault().getPreferenceStore();
// Python
String value = prefs.getString(PreferenceConstants.P_PYTHON_PYTHONPATH);
// In debug mode this might be: file:/users/gerring/workspace_dawb/org.dawb.workbench.target/bundles/
FableJep.setPythonPath(value);
// Add a listener for preference changes
prefs.addPropertyChangeListener(new IPropertyChangeListener() {
public void propertyChange(PropertyChangeEvent event) {
String property = event.getProperty();
if (property.equals(PreferenceConstants.P_PYTHON_PYTHONPATH)) {
String value = (String) event.getNewValue();
FableJep.setPythonPath(value);
}
}
});
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext
* )
*/
public void stop(BundleContext context) throws Exception {
try {
plugin = null;
if (prefs != null && listener != null) {
prefs.removePropertyChangeListener(listener);
}
prefs = null;
listener = null;
} finally {
super.stop(context);
}
}
/**
* Returns the shared instance
*
* @return the shared instance
*/
public static Activator getDefault() {
return plugin;
}
}