1 files changed, 130 insertions, 0 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/util/LabeledControlUpdater.java b/jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/util/LabeledControlUpdater.java
new file mode 100644
index 0000000000..e6333aaeb7
--- /dev/null
+++ b/jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/util/LabeledControlUpdater.java
@@ -0,0 +1,130 @@
+/*******************************************************************************
+ * 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.ui.internal.util;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jpt.ui.internal.listeners.SWTPropertyChangeListenerWrapper;
+import org.eclipse.jpt.utility.model.event.PropertyChangeEvent;
+import org.eclipse.jpt.utility.model.listener.PropertyChangeListener;
+import org.eclipse.jpt.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);
+	}
+}
+\ No newline at end of file