| /******************************************************************************* |
| * 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.ui.console.actions; |
| |
| |
| import org.eclipse.jface.action.Action; |
| import org.eclipse.jface.text.ITextOperationTarget; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.ui.texteditor.IUpdate; |
| |
| /** |
| * Common function for actions that operate on a text viewer. |
| * <p> |
| * Clients may subclass this class. |
| * </p> |
| * @since 3.0 |
| */ |
| public class TextViewerAction extends Action implements IUpdate { |
| |
| private int fOperationCode= -1; |
| private ITextOperationTarget fOperationTarget; |
| |
| /** |
| * Constructs a new action in the given text viewer with |
| * the specified operation code. |
| * |
| * @param viewer |
| * @param operationCode |
| */ |
| public TextViewerAction(ITextViewer viewer, int operationCode) { |
| fOperationCode= operationCode; |
| fOperationTarget= viewer.getTextOperationTarget(); |
| update(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.texteditor.IUpdate#update() |
| * |
| * Updates the enabled state of the action. |
| * Fires a property change if the enabled state changes. |
| * |
| * @see org.eclipse.jface.action.Action#firePropertyChange(String, Object, Object) |
| */ |
| public void update() { |
| |
| boolean wasEnabled= isEnabled(); |
| boolean isEnabled= (fOperationTarget != null && fOperationTarget.canDoOperation(fOperationCode)); |
| setEnabled(isEnabled); |
| |
| if (wasEnabled != isEnabled) { |
| firePropertyChange(ENABLED, wasEnabled ? Boolean.TRUE : Boolean.FALSE, isEnabled ? Boolean.TRUE : Boolean.FALSE); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.action.IAction#run() |
| */ |
| public void run() { |
| if (fOperationCode != -1 && fOperationTarget != null) { |
| fOperationTarget.doOperation(fOperationCode); |
| } |
| } |
| |
| /** |
| * Configures this action with a label, tool tip, and description. |
| * |
| * @param text action label |
| * @param toolTipText action tool tip |
| * @param description action description |
| */ |
| public void configureAction(String text, String toolTipText, String description) { |
| setText(text); |
| setToolTipText(toolTipText); |
| setDescription(description); |
| } |
| } |