1 files changed, 121 insertions, 0 deletions
diff --git a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/providers/WrappedLabelProvider.java b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/providers/WrappedLabelProvider.java
new file mode 100644
index 00000000000..0b6d84d2160
--- /dev/null
+++ b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/providers/WrappedLabelProvider.java
@@ -0,0 +1,121 @@
+/*****************************************************************************
+ * Copyright (c) 2010 CEA LIST.
+ *
+ * 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:
+ *  Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
+ *****************************************************************************/
+package org.eclipse.papyrus.infra.widgets.providers;
+
+import org.eclipse.jface.viewers.ILabelProvider;
+import org.eclipse.jface.viewers.ILabelProviderListener;
+import org.eclipse.swt.graphics.Image;
+
+/**
+ * A mutable wrapper for {@link ILabelProvider}s
+ * May be used when you need to instantiate a component with a labelProvider,
+ * and you don't have one yet.
+ * If there is no wrapped label provider, the default toString method will be called
+ * on non-null objects.
+ *
+ * @author Camille Letavernier
+ *
+ */
+public class WrappedLabelProvider implements ILabelProvider {
+
+	/**
+	 * The wrapped LabelProvider
+	 */
+	private ILabelProvider labelProvider;
+
+	/**
+	 * Constructs a new empty Label provider wrapper.
+	 */
+	public WrappedLabelProvider() {
+
+	}
+
+	/**
+	 *
+	 * Constructs a new Label provider, wrapping the specified label provider.
+	 *
+	 * @param provider
+	 *            The wrapped label provider
+	 */
+	public WrappedLabelProvider(ILabelProvider provider) {
+		this.labelProvider = provider;
+	}
+
+	/**
+	 * Changes the wrapped label provider
+	 *
+	 * @param provider
+	 *            The new wrapped label provider
+	 */
+	public void setLabelProvider(ILabelProvider provider) {
+		this.labelProvider = provider;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void addListener(ILabelProviderListener listener) {
+		// Nothing
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void dispose() {
+		// Nothing
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public boolean isLabelProperty(Object element, String property) {
+		return true;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void removeListener(ILabelProviderListener listener) {
+		// Nothing
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Image getImage(Object element) {
+		if (labelProvider != null) {
+			return labelProvider.getImage(element);
+		}
+		return null;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public String getText(Object element) {
+		if (labelProvider != null) {
+			return labelProvider.getText(element);
+		}
+		if (element == null)
+		{
+			return "null"; //$NON-NLS-1$
+		}
+		return element.toString();
+	}
+
+}