1 files changed, 41 insertions, 0 deletions
diff --git a/demos/org.eclipse.fx.demo.contacts.app/src/org/eclipse/fx/demo/contacts/handlers/UndoHandler.java b/demos/org.eclipse.fx.demo.contacts.app/src/org/eclipse/fx/demo/contacts/handlers/UndoHandler.java
new file mode 100755
index 000000000..07f1deb52
--- /dev/null
+++ b/demos/org.eclipse.fx.demo.contacts.app/src/org/eclipse/fx/demo/contacts/handlers/UndoHandler.java
@@ -0,0 +1,41 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Siemens AG 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:
+ *     Kai T??dter - initial implementation
+ ******************************************************************************/
+
+package org.eclipse.fx.demo.contacts.handlers;
+
+
+import javax.inject.Inject;
+import org.eclipse.e4.core.di.annotations.CanExecute;
+import org.eclipse.e4.core.di.annotations.Execute;
+import org.eclipse.emf.common.command.CommandStack;
+import org.eclipse.fx.demo.contacts.model.ContactsManager;
+
+@SuppressWarnings("restriction")
+public class UndoHandler {
+	
+	@Inject
+	ContactsManager contactsManager;
+	
+	@CanExecute
+	public boolean canUndo() {
+		CommandStack commandStack = contactsManager.getEditingDomain().getCommandStack();
+		return commandStack.canUndo();
+	}
+
+	@Execute
+	public void undo() {
+		CommandStack commandStack = contactsManager.getEditingDomain().getCommandStack();
+		if (commandStack.canUndo())
+			commandStack.undo();
+	}
+	
+}