| /*=============================================================================# |
| # Copyright (c) 2008, 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.ltk.ui; |
| |
| import org.eclipse.jface.text.DocumentEvent; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IDocumentListener; |
| import org.eclipse.jface.text.ITextInputListener; |
| |
| |
| /** |
| * Extension for {@link PostSelectionWithElementInfoController} for source viewers / documents |
| * enabling suppression of selection notification if the document or its content changed. |
| */ |
| public abstract class PostSelectionCancelExtension implements ITextInputListener, IDocumentListener { |
| |
| |
| PostSelectionWithElementInfoController controller; |
| |
| |
| public abstract void init(); |
| public abstract void dispose(); |
| |
| |
| @Override |
| public void inputDocumentAboutToBeChanged(final IDocument oldInput, final IDocument newInput) { |
| if (oldInput != null) { |
| oldInput.removeDocumentListener(this); |
| } |
| this.controller.cancel(); |
| } |
| |
| @Override |
| public void inputDocumentChanged(final IDocument oldInput, final IDocument newInput) { |
| if (newInput != null) { |
| newInput.addDocumentListener(this); |
| } |
| } |
| |
| @Override |
| public void documentAboutToBeChanged(final DocumentEvent event) { |
| this.controller.cancel(); |
| } |
| |
| @Override |
| public void documentChanged(final DocumentEvent event) { |
| } |
| |
| } |