Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-before / ui / org / eclipse / jdt / internal / ui / callhierarchy / OpenDeclarationAction.java

diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/OpenDeclarationAction.java b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/OpenDeclarationAction.java
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+++ b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/OpenDeclarationAction.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2011 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:
+ *   Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation
+ *                     (report 36180: Callers/Callees view)
+ *******************************************************************************/
+package org.eclipse.jdt.internal.ui.callhierarchy;
+
+import org.eclipse.jface.viewers.ISelection;
+
+import org.eclipse.ui.IWorkbenchSite;
+
+import org.eclipse.jdt.core.IMember;
+
+import org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper;
+
+import org.eclipse.jdt.ui.actions.OpenAction;
+
+import org.eclipse.jdt.internal.ui.util.SelectionUtil;
+
+/**
+ * This class is used for opening the declaration of an element from the call hierarchy view.
+ */
+class OpenDeclarationAction extends OpenAction {
+    public OpenDeclarationAction(IWorkbenchSite site) {
+        super(site);
+    }
+
+    public boolean canActionBeAdded() {
+        // It is safe to cast to IMember since the selection has already been converted
+        IMember member = (IMember) SelectionUtil.getSingleElement(getSelection());
+
+        if (member != null) {
+            return true;
+        }
+
+        return false;
+    }
+
+    @Override
+       public ISelection getSelection() {
+        return CallHierarchyUI.convertSelection(getSelectionProvider().getSelection());
+    }
+
+    @Override
+       public Object getElementToOpen(Object object) {
+        if (object instanceof MethodWrapper) {
+            return ((MethodWrapper) object).getMember();
+        }
+        return object;
+    }
+}