/*******************************************************************************
* Copyright (c) 2000, 2006 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.papyrus.views.documentation.view;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.text.ITextOperationTarget;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.ui.texteditor.IUpdate;
public class TextViewerAction extends Action implements IUpdate {
private int operationCode = -1;
private ITextOperationTarget operationTarget;
public TextViewerAction(ITextViewer viewer, int operationCode) {
this.operationCode = operationCode;
operationTarget = viewer.getTextOperationTarget();
update();
}
public void update() {
boolean wasEnabled = isEnabled();
boolean isEnabled = (operationTarget != null && operationTarget.canDoOperation(operationCode));
setEnabled(isEnabled);
if (wasEnabled != isEnabled) {
firePropertyChange(ENABLED, wasEnabled ? Boolean.TRUE : Boolean.FALSE, isEnabled ? Boolean.TRUE : Boolean.FALSE);
}
}
public void run() {
if (operationCode != -1 && operationTarget != null) {
operationTarget.doOperation(operationCode);
}
}
}