/**
* Subclasses may override/extend this method to create custom filters, perhaps based on the
* default filter create by the superclass. <b>Note</b> that this method is invoked by the
* superclass constructor, so subclasses must not attempt to access their own state.
*
* @return my notification filter
*/
protected NotificationFilter createFilter() {
return NotificationFilter.createNotifierTypeFilter(ResourceSet.class)
.or(NotificationFilter.createNotifierTypeFilter(Resource.class));
}
/**
* Listens for removed Ensembles and closes their editors
*
* @author Marco Jacobasch
*/
public class EnsembleRemoveListener extends DemultiplexingListener {
/** NotificationFilter to select only remove notifications and Ensembles or EnsembleRepository */
private static final NotificationFilter REMOVE_FILTER =
NotificationFilter.createEventTypeFilter(Notification.REMOVE)
.and(
NotificationFilter.createNotifierTypeFilter(
DatamodelPackage.Literals.CONCRETE_ENSEMBLE)
.or(
NotificationFilter.createNotifierTypeFilter(
DatamodelPackage.Literals.ENSEMBLE_REPOSITORY)));
/** Creates Listener with a NotificationFilter */
public EnsembleRemoveListener() {
super(REMOVE_FILTER);
}
/**
* Checks only if removed object was an Ensemble, if true, closes all open Ensemble Editors.
*
* <p>Checking remove event and correct classes is done by the NotificationFilter
*/
@Override
protected void handleNotification(TransactionalEditingDomain domain, Notification notification) {
if (notification.getOldValue() instanceof Ensemble) {
final Ensemble oldEnsemble = (Ensemble) notification.getOldValue();
Display.getDefault()
.asyncExec(
new Runnable() {
@Override
public void run() {
IWorkbenchPage page = getActivePage();
Ensemble ens = oldEnsemble;
if (page != null) {
IEditorReference[] editors =
page.findEditors(
new EnsembleEditorInput(ens),
EnsembleEditor.ID,
IWorkbenchPage.MATCH_ID | IWorkbenchPage.MATCH_INPUT);
page.closeEditors(editors, false);
}
}
});
}
}
/**
* Get the current active page to close all editors
*
* @return
*/
private IWorkbenchPage getActivePage() {
IWorkbenchPage result = null;
IWorkbench bench = PlatformUI.getWorkbench();
if (bench != null) {
IWorkbenchWindow window = bench.getActiveWorkbenchWindow();
if (window != null) {
result = window.getActivePage();
}
}
return result;
}
}
