--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.core.databinding/src/org/eclipse/core/databinding/ValidationStatusProvider.d	Tue Apr 14 11:35:29 2009 +0200
@@ -0,0 +1,68 @@
+/*******************************************************************************
+ * Copyright (c) 2008 IBM Corporation 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:
+ *     Boris Bokowski - initial API and implementation (bug 218269)
+ *     Matthew Hall - bug 218269
+ ******************************************************************************/
+
+module org.eclipse.core.databinding.ValidationStatusProvider;
+
+import java.lang.all;
+
+import org.eclipse.core.databinding.observable.IObservable;
+import org.eclipse.core.databinding.observable.list.IObservableList;
+import org.eclipse.core.databinding.observable.value.IObservableValue;
+
+/**
+ * A validation status provider tracks the state of zero or more target
+ * observables and zero or more model observables and produces a validation
+ * result.
+ * 
+ * @since 1.1
+ * 
+ */
+public abstract class ValidationStatusProvider {
+
+    protected bool disposed = false;
+
+    /**
+     * @return an observable value containing the current validation status
+     */
+    public abstract IObservableValue getValidationStatus();
+
+    /**
+     * Returns the list of target observables (if any) that are being tracked by
+     * this validation status provider.
+     * 
+     * @return an observable list of target {@link IObservable}s (may be empty)
+     */
+    public abstract IObservableList getTargets();
+
+    /**
+     * Returns the model observables (if any) that are being tracked by this
+     * validation status provider.
+     * 
+     * @return an observable list of model {@link IObservable}s (may be empty)
+     */
+    public abstract IObservableList getModels();
+
+    /**
+     * Disposes of this ValidationStatusProvider. Subclasses may extend, but
+     * must call super.dispose().
+     */
+    public void dispose() {
+        disposed = true;
+    }
+
+    /**
+     * @return true if the binding has been disposed. false otherwise.
+     */
+    public bool isDisposed() {
+        return disposed;
+    }
+}