1 files changed, 101 insertions, 0 deletions
diff --git a/plugins/xwt/org.eclipse.papyrus.xwt/src/org/eclipse/papyrus/xwt/databinding/ControlDataBinding.java b/plugins/xwt/org.eclipse.papyrus.xwt/src/org/eclipse/papyrus/xwt/databinding/ControlDataBinding.java
new file mode 100644
index 00000000000..d51b7eed3b1
--- /dev/null
+++ b/plugins/xwt/org.eclipse.papyrus.xwt/src/org/eclipse/papyrus/xwt/databinding/ControlDataBinding.java
@@ -0,0 +1,101 @@
+/*******************************************************************************
+ * Copyright (c) 2006, 2010 Soyatec (http://www.soyatec.com) 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:
+ *     Soyatec - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.papyrus.xwt.databinding;
+
+import org.eclipse.core.databinding.observable.value.IObservableValue;
+import org.eclipse.papyrus.xwt.IDataProvider;
+import org.eclipse.papyrus.xwt.IValueConverter;
+import org.eclipse.papyrus.xwt.internal.core.Binding;
+import org.eclipse.papyrus.xwt.internal.core.BindingGate;
+import org.eclipse.papyrus.xwt.internal.core.ScopeManager;
+import org.eclipse.papyrus.xwt.internal.utils.UserData;
+
+/**
+ * 
+ * @author yyang (yves.yang@soyatec.com)
+ */
+public class ControlDataBinding extends AbstractDataBinding {
+
+	private Object source;
+
+	public ControlDataBinding(Object source, Binding binding, IDataProvider dataProvider) {
+		super(binding, dataProvider);
+		this.source = source;
+	}
+
+	/**
+	 * Get bind value of two bindings.
+	 */
+	public Object getValue(Class<?> targetType) {
+		IObservableValue targetWidget = null;
+		Object target = getControl();
+		if(target != null) {
+			targetWidget = ScopeManager.observeValue(target, target, getTargetProperty(), getUpdateSourceTrigger());
+		}
+		if(source == null) {
+			return null;
+		}
+
+		Object control = UserData.getWidget(source);
+		if(control == null) {
+			control = getControl();
+		}
+
+		IObservableValue sourceWidget = ScopeManager.observeValue(control, source, getSourceProperty(), getUpdateSourceTrigger());
+
+		if(targetWidget == null) {
+			if(sourceWidget != null) {
+				if(targetType != null && !targetType.isInstance(sourceWidget)) {
+					return sourceWidget;
+				}
+				Object value = sourceWidget.getValue();
+				while(value instanceof IObservableValue) {
+					value = ((IObservableValue)value).getValue();
+				}
+				IValueConverter converter = getConverter();
+				if(converter != null) {
+					value = converter.convert(value);
+				}
+				return value;
+			}
+			return source;
+		}
+
+		IBindingContext dataBindingContext = getDataBindingContext();
+		BindingGate bindingGate = new BindingGate(dataBindingContext);
+		bindingGate.bind(sourceWidget, targetWidget, this);
+		if(sourceWidget != null) {
+			if(targetType != null && !targetType.isInstance(sourceWidget)) {
+				return sourceWidget;
+			}
+			// convert to final value
+			Object value = sourceWidget.getValue();
+			while(value instanceof IObservableValue) {
+				value = ((IObservableValue)value).getValue();
+			}
+			IValueConverter converter = getConverter();
+			if(converter != null) {
+				value = converter.convert(value);
+			}
+			return value;
+		}
+		return source;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	protected Object getSource() {
+		return source;
+	}
+}