private void transferListeners(IModel source, IModel target) {
if (source instanceof IModelChangeProviderExtension
&& target instanceof IModelChangeProviderExtension) {
IModelChangeProviderExtension smodel = (IModelChangeProviderExtension) source;
IModelChangeProviderExtension tmodel = (IModelChangeProviderExtension) target;
// first fire one last event to all the listeners to
// refresh
smodel.fireModelChanged(
new ModelChangedEvent(smodel, IModelChangedEvent.WORLD_CHANGED, null, null));
// now pass the listener to the target model
smodel.transferListenersTo(
tmodel,
new IModelChangedListenerFilter() {
@Override
public boolean accept(IModelChangedListener listener) {
if (listener instanceof IFormPart || listener instanceof FormOutlinePage) return true;
return false;
}
});
}
}
@Override
public void transferListenersTo(
IModelChangeProviderExtension target, IModelChangedListenerFilter filter) {
ArrayList<IModelChangedListener> removed = new ArrayList<>();
for (int i = 0; i < fListeners.size(); i++) {
IModelChangedListener listener = fListeners.get(i);
if (filter == null || filter.accept(listener)) {
target.addModelChangedListener(listener);
removed.add(listener);
}
}
fListeners.removeAll(removed);
}