| /*=============================================================================# |
| # Copyright (c) 2012, 2021 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.ecommons.ui.viewers; |
| |
| import java.util.List; |
| |
| import org.eclipse.jface.util.SafeRunnable; |
| import org.eclipse.jface.viewers.IPostSelectionProvider; |
| import org.eclipse.jface.viewers.ISelectionChangedListener; |
| import org.eclipse.jface.viewers.SelectionChangedEvent; |
| |
| import org.eclipse.statet.jcommons.collections.CopyOnWriteList; |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| |
| |
| @NonNullByDefault |
| public abstract class AbstractPostSelectionProvider implements IPostSelectionProvider { |
| |
| |
| private final CopyOnWriteList<ISelectionChangedListener> selectionListeners= new CopyOnWriteList<>(); |
| |
| private final CopyOnWriteList<ISelectionChangedListener> postSelectionListeners= new CopyOnWriteList<>(); |
| |
| |
| public AbstractPostSelectionProvider() { |
| } |
| |
| |
| @Override |
| public void addSelectionChangedListener(final ISelectionChangedListener listener) { |
| this.selectionListeners.add(listener); |
| } |
| |
| @Override |
| public void removeSelectionChangedListener(final ISelectionChangedListener listener) { |
| this.selectionListeners.remove(listener); |
| } |
| |
| |
| @Override |
| public void addPostSelectionChangedListener(final ISelectionChangedListener listener) { |
| this.postSelectionListeners.add(listener); |
| } |
| |
| @Override |
| public void removePostSelectionChangedListener(final ISelectionChangedListener listener) { |
| this.postSelectionListeners.remove(listener); |
| } |
| |
| |
| protected void fireSelectionChanged(final SelectionChangedEvent event) { |
| final List<ISelectionChangedListener> listeners = this.selectionListeners.toList(); |
| for (final ISelectionChangedListener listener : listeners) { |
| SafeRunnable.run(() -> listener.selectionChanged(event)); |
| } |
| } |
| |
| protected void firePostSelectionChanged(final SelectionChangedEvent event) { |
| final List<ISelectionChangedListener> listeners = this.postSelectionListeners.toList(); |
| for (final ISelectionChangedListener listener : listeners) { |
| SafeRunnable.run(() -> listener.selectionChanged(event)); |
| } |
| } |
| |
| } |