1 files changed, 54 insertions, 0 deletions
diff --git a/plugins/core/org.eclipse.papyrus.navigation/src/org/eclipse/papyrus/navigation/handlers/BackNavigateHandler.java b/plugins/core/org.eclipse.papyrus.navigation/src/org/eclipse/papyrus/navigation/handlers/BackNavigateHandler.java
new file mode 100644
index 00000000000..eb3f3df020f
--- /dev/null
+++ b/plugins/core/org.eclipse.papyrus.navigation/src/org/eclipse/papyrus/navigation/handlers/BackNavigateHandler.java
@@ -0,0 +1,54 @@
+/*******************************************************************************
+ * Copyright (c) 2011 AtoS
+ * 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:
+ *    Anass RADOUANI (AtoS)
+ *******************************************************************************/
+
+package org.eclipse.papyrus.navigation.handlers;
+
+import org.eclipse.core.commands.AbstractHandler;
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.ExecutionException;
+import org.eclipse.emf.edit.domain.EditingDomain;
+import org.eclipse.emf.transaction.TransactionalEditingDomain;
+import org.eclipse.papyrus.core.editor.CoreMultiDiagramEditor;
+import org.eclipse.papyrus.core.services.ServiceException;
+import org.eclipse.papyrus.sasheditor.contentprovider.IPageMngr;
+import org.eclipse.ui.IEditorPart;
+import org.eclipse.ui.handlers.HandlerUtil;
+
+/**
+ * handler for Up command
+ * 
+ */
+public class BackNavigateHandler extends AbstractHandler {
+
+	private IEditorPart editor;
+
+	private IPageMngr pageMngr;
+
+	public Object execute(ExecutionEvent event) throws ExecutionException {
+		editor = HandlerUtil.getActiveEditor(event);
+
+		if(editor instanceof CoreMultiDiagramEditor) {
+			CoreMultiDiagramEditor papyrusEditor = (CoreMultiDiagramEditor)editor;
+			EditingDomain editingDomain = papyrusEditor.getEditingDomain();
+			if(editingDomain instanceof TransactionalEditingDomain) {
+				try {
+					pageMngr = papyrusEditor.getServicesRegistry().getService(IPageMngr.class);
+					pageMngr.openPrevious();
+				} catch (ServiceException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+
+		return null;
+	}
+
+}