| /******************************************************************************* |
| * Copyright (c) 2000, 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.jdt.internal.ui.javaeditor.selectionactions; |
| |
| import org.eclipse.jface.action.Action; |
| import org.eclipse.jface.util.Assert; |
| |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.texteditor.IUpdate; |
| |
| import org.eclipse.jdt.core.ISourceRange; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| |
| public class StructureSelectHistoryAction extends Action implements IUpdate { |
| private JavaEditor fEditor; |
| private SelectionHistory fHistory; |
| |
| public StructureSelectHistoryAction(JavaEditor editor, SelectionHistory history) { |
| super(SelectionActionMessages.StructureSelectHistory_label); |
| setToolTipText(SelectionActionMessages.StructureSelectHistory_tooltip); |
| setDescription(SelectionActionMessages.StructureSelectHistory_description); |
| Assert.isNotNull(history); |
| Assert.isNotNull(editor); |
| fHistory= history; |
| fEditor= editor; |
| update(); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.STRUCTURED_SELECTION_HISTORY_ACTION); |
| } |
| |
| public void update() { |
| setEnabled(!fHistory.isEmpty()); |
| } |
| |
| public void run() { |
| ISourceRange old= fHistory.getLast(); |
| if (old != null) { |
| try { |
| fHistory.ignoreSelectionChanges(); |
| fEditor.selectAndReveal(old.getOffset(), old.getLength()); |
| } finally { |
| fHistory.listenToSelectionChanges(); |
| } |
| } |
| } |
| } |