1 files changed, 128 insertions, 0 deletions
diff --git a/plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/databinding/ObservableGradientData.java b/plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/databinding/ObservableGradientData.java
new file mode 100644
index 00000000000..47caae7f46c
--- /dev/null
+++ b/plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/databinding/ObservableGradientData.java
@@ -0,0 +1,128 @@
+/*****************************************************************************
+ * Copyright (c) 2011 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.gmfdiag.properties.databinding;
+
+import org.eclipse.core.databinding.observable.value.IObservableValue;
+import org.eclipse.gmf.runtime.notation.datatype.GradientData;
+
+/**
+ * This class encapsulates a gradient data, which may be null (If the
+ * gradient is not activated).
+ * 
+ * If the gradient data is null, it will be created just-in-time when
+ * setters are called.
+ * 
+ * This class has an additional property, {@link #activate}.
+ * activate = false implies that the gradient data has not been set
+ * (gradient data = null)
+ * 
+ * @author Camille Letavernier
+ */
+public class ObservableGradientData extends GradientData {
+
+	private IObservableValue source;
+
+	private GradientData encapsulated;
+
+	private boolean activate;
+
+	/**
+	 * 
+	 * Constructor.
+	 * 
+	 * @param source
+	 *        The IObservableValue containing the gradient data. It will be
+	 *        notified when the gradient data is changed
+	 * @param encapsulated
+	 *        The encapsulated gradient data. May be null
+	 */
+	public ObservableGradientData(IObservableValue source, GradientData encapsulated) {
+		this.encapsulated = new GradientData(encapsulated);
+		this.source = source;
+		this.activate = encapsulated != null;
+	}
+
+	@Override
+	public int getGradientColor1() {
+		return encapsulated.getGradientColor1();
+	}
+
+	@Override
+	public int getGradientColor2() {
+		return encapsulated.getGradientColor2();
+	}
+
+	@Override
+	public int getGradientStyle() {
+		return encapsulated.getGradientStyle();
+	}
+
+	/**
+	 * Notifies the object owned the gradient data that a change
+	 * occurred
+	 */
+	protected void notifySource() {
+		if(activate) {
+			source.setValue(new GradientData(encapsulated));
+		} else {
+			source.setValue(null);
+		}
+	}
+
+	@Override
+	public void setGradientColor1(int color) {
+		encapsulated.setGradientColor1(color);
+		notifySource();
+	}
+
+	@Override
+	public void setGradientColor2(int color) {
+		encapsulated.setGradientColor2(color);
+		notifySource();
+	}
+
+	@Override
+	public void setGradientStyle(int style) {
+		encapsulated.setGradientStyle(style);
+		notifySource();
+	}
+
+	@Override
+	public int hashCode() {
+		return encapsulated.hashCode();
+	}
+
+	@Override
+	public boolean equals(Object other) {
+		return encapsulated.equals(other);
+	}
+
+	/**
+	 * 
+	 * @return true if this gradient data is activated
+	 */
+	public boolean getActivate() {
+		return activate;
+	}
+
+	/**
+	 * Activates or de-activates this gradient data
+	 * 
+	 * @param value
+	 *        Whether the gradient data should be activated or de-activated
+	 */
+	public void setActivate(boolean value) {
+		this.activate = value;
+		notifySource();
+	}
+
+}