| /******************************************************************************* |
| * Copyright (c) 2008 Oracle. 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: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.common.ui.internal.util; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jpt.common.ui.internal.listeners.SWTPropertyChangeListenerWrapper; |
| import org.eclipse.jpt.common.utility.model.event.PropertyChangeEvent; |
| import org.eclipse.jpt.common.utility.model.listener.PropertyChangeListener; |
| import org.eclipse.jpt.common.utility.model.value.PropertyValueModel; |
| import org.eclipse.swt.graphics.Image; |
| |
| /** |
| * This updater is responsible to update the <code>LabeledControl</code> when |
| * the text and the icon need to change. |
| * |
| * @version 2.0 |
| * @since 2.0 |
| */ |
| @SuppressWarnings("nls") |
| public final class LabeledControlUpdater { |
| |
| /** |
| * The wrapper around a control that has text and icon. |
| */ |
| private LabeledControl labeledControl; |
| |
| /** |
| * Creates a new <code>LabeledControlUpdater</code>. |
| * |
| * @param labeledControl The wrapper around the control that needs to |
| * have its text updated |
| * @param textHolder The holder this class will listen for changes |
| */ |
| public LabeledControlUpdater(LabeledControl labeledControl, |
| PropertyValueModel<String> textHolder) |
| { |
| this(labeledControl, textHolder, null); |
| } |
| |
| /** |
| * Creates a new <code>LabeledControlUpdater</code>. |
| * |
| * @param labeledControl The wrapper around the control that needs to |
| * have its image and text updated |
| * @param imageHolder The holder this class will listen for changes or |
| * <code>null</code> if the text never changes |
| * @param textHolder The holder this class will listen for changes or |
| * <code>null</code> if the image never changes |
| */ |
| public LabeledControlUpdater(LabeledControl labeledControl, |
| PropertyValueModel<String> textHolder, |
| PropertyValueModel<Image> imageHolder) |
| { |
| super(); |
| initialize(labeledControl, textHolder, imageHolder); |
| } |
| |
| private PropertyChangeListener buildIconListener() { |
| return new SWTPropertyChangeListenerWrapper(buildIconListener_()); |
| } |
| |
| private PropertyChangeListener buildIconListener_() { |
| return new PropertyChangeListener() { |
| public void propertyChanged(PropertyChangeEvent e) { |
| LabeledControlUpdater.this.setImage((Image) e.getNewValue()); |
| } |
| |
| @Override |
| public String toString() { |
| return "LabeledControlUpdater.imageListener"; |
| } |
| }; |
| } |
| |
| private PropertyChangeListener buildTextListener() { |
| return new SWTPropertyChangeListenerWrapper(buildTextListener_()); |
| } |
| |
| private PropertyChangeListener buildTextListener_() { |
| return new PropertyChangeListener() { |
| public void propertyChanged(PropertyChangeEvent e) { |
| LabeledControlUpdater.this.setText((String) e.getNewValue()); |
| } |
| |
| @Override |
| public String toString() { |
| return "LabeledControlUpdater.textListener"; |
| } |
| }; |
| } |
| |
| private void initialize(LabeledControl labeledControl, |
| PropertyValueModel<String> textHolder, |
| PropertyValueModel<Image> imageHolder) |
| { |
| Assert.isNotNull(labeledControl, "The LabeledControl cannot be null"); |
| |
| this.labeledControl = labeledControl; |
| |
| if (textHolder != null) { |
| textHolder.addPropertyChangeListener(PropertyValueModel.VALUE, buildTextListener()); |
| setText(textHolder.getValue()); |
| } |
| |
| if (imageHolder != null) { |
| imageHolder.addPropertyChangeListener(PropertyValueModel.VALUE, buildIconListener()); |
| setImage(imageHolder.getValue()); |
| } |
| } |
| |
| private void setImage(Image icon) { |
| labeledControl.setImage(icon); |
| } |
| |
| private void setText(String text) { |
| |
| if (text == null) { |
| text = ""; |
| } |
| |
| labeledControl.setText(text); |
| } |
| } |