@Override
public void attach() {
super.attach();
// start to listen
PsiChangesWatcher w = myIdeaModule.getProject().getComponent(PsiChangesWatcher.class);
w.addListener(this);
}
@Override
public void dispose() {
super.dispose();
PsiChangesWatcher w = myIdeaModule.getProject().getComponent(PsiChangesWatcher.class);
w.removeListener(this);
}