eclipse 透视图切换监听 和 视图激活监听

<extension
         point="org.eclipse.ui.startup">
      <startup
            class="PerspectiveListener">
      </startup>
   </extension>

import java.io.File;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IPartListener;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.IPerspectiveListener;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;


import com.noah.smt.perspective.SmtPerspectiveFactory;

public class PerspectiveListener implements IPerspectiveListener,
IPartListener, IStartup {
private static final Logger log = Logger
.getLogger(PerspectiveListener.class.getName());

@Override
public void earlyStartup() {
Display.getDefault().asyncExec(new Runnable() {

public void run() {
try {
PerspectiveListener listener=new PerspectiveListener();
PlatformUI.getWorkbench().getActiveWorkbenchWindow()
.getActivePage().addPartListener(
listener);
PlatformUI.getWorkbench().getActiveWorkbenchWindow().addPerspectiveListener(listener);
} catch (Exception e) {
log.log(Level.ALL, e.getMessage());
}
}

});

}

@Override
public void partActivated(IWorkbenchPart part) {
refresh(part);

}

private void refresh(IWorkbenchPart part) {

}

@Override
public void partBroughtToTop(IWorkbenchPart part) {


}

@Override
public void partClosed(IWorkbenchPart part) {


}

@Override
public void partDeactivated(IWorkbenchPart part) {


}

@Override
public void partOpened(IWorkbenchPart part) {


}

@Override
public void perspectiveActivated(IWorkbenchPage page,
IPerspectiveDescriptor perspective) {
if(perspective.getId().equals(SmtPerspectiveFactory.ID)){

}
System.out.println("perspective " + perspective.getId());
}

@Override
public void perspectiveChanged(IWorkbenchPage page,
IPerspectiveDescriptor perspective, String changeId) {
System.out.println("changeId " + changeId);

}

}