| /******************************************************************************* |
| * Copyright (c) 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * |
| *******************************************************************************/ |
| |
| package org.eclipse.wst.sse.ui.internal.selection; |
| |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.ui.IActionDelegate2; |
| import org.eclipse.ui.IEditorActionDelegate; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IViewActionDelegate; |
| import org.eclipse.ui.IViewPart; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.wst.sse.ui.internal.SSEUIMessages; |
| |
| /** |
| * Selection history action delegate. Keeps track of selection within editor. |
| */ |
| public class StructuredSelectHistoryActionDelegate implements IEditorActionDelegate, IActionDelegate2, IViewActionDelegate { |
| private IEditorPart fEditor; |
| private SelectionHistory fHistory; |
| |
| public void dispose() { |
| fEditor = null; |
| fHistory = null; |
| } |
| |
| public void init(IAction action) { |
| if (action != null) { |
| action.setText(SSEUIMessages.StructureSelectHistory_label); |
| action.setToolTipText(SSEUIMessages.StructureSelectHistory_tooltip); |
| action.setDescription(SSEUIMessages.StructureSelectHistory_description); |
| } |
| } |
| |
| public void init(IViewPart view) { |
| // do nothing |
| } |
| |
| public void run(IAction action) { |
| IRegion old = fHistory.getLast(); |
| if (old != null) { |
| try { |
| fHistory.ignoreSelectionChanges(); |
| if (fEditor instanceof ITextEditor) |
| ((ITextEditor) fEditor).selectAndReveal(old.getOffset(), old.getLength()); |
| } |
| finally { |
| fHistory.listenToSelectionChanges(); |
| } |
| } |
| } |
| |
| public void runWithEvent(IAction action, Event event) { |
| run(action); |
| } |
| |
| public void selectionChanged(IAction action, ISelection selection) { |
| // do nothing |
| } |
| |
| public void setActiveEditor(IAction action, IEditorPart targetEditor) { |
| fEditor = targetEditor; |
| if (fEditor != null) |
| fHistory = (SelectionHistory) fEditor.getAdapter(SelectionHistory.class); |
| else |
| fHistory = null; |
| if (fHistory != null) { |
| fHistory.setHistoryAction(action); |
| } |
| } |
| } |