Case Study: adding data and statistics

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

diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/FocusOnSelectionAction.java b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/FocusOnSelectionAction.java
new file mode 100644 (file)
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+++ b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/FocusOnSelectionAction.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)
+ *   Stephan Herrmann (stephan@cs.tu-berlin.de):
+ *          - bug 75800: [call hierarchy] should allow searches for fields
+ *******************************************************************************/
+package org.eclipse.jdt.internal.ui.callhierarchy;
+
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.jface.viewers.IStructuredSelection;
+
+import org.eclipse.ui.PlatformUI;
+
+import org.eclipse.jdt.core.IMember;
+
+import org.eclipse.jdt.internal.corext.callhierarchy.CallHierarchy;
+import org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper;
+import org.eclipse.jdt.internal.corext.util.Messages;
+
+import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
+import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels;
+
+class FocusOnSelectionAction extends Action {
+       private CallHierarchyViewPart fPart;
+
+       public FocusOnSelectionAction(CallHierarchyViewPart part) {
+               super(CallHierarchyMessages.FocusOnSelectionAction_focusOnSelection_text);
+               fPart= part;
+               setDescription(CallHierarchyMessages.FocusOnSelectionAction_focusOnSelection_description);
+               setToolTipText(CallHierarchyMessages.FocusOnSelectionAction_focusOnSelection_tooltip);
+               PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_FOCUS_ON_SELECTION_ACTION);
+       }
+
+       public boolean canActionBeAdded() {
+               IMember[] members= getSelectedInputElements();
+
+               if (members != null) {
+                       if (members.length == 1) {
+                               setText(Messages.format(CallHierarchyMessages.FocusOnSelectionAction_focusOn_text, BasicElementLabels.getJavaElementName(members[0].getElementName())));
+                       } else {
+                               setText(CallHierarchyMessages.FocusOnSelectionAction_focusOn_selected);
+                       }
+                       return true;
+
+               } else {
+                       return false;
+               }
+       }
+
+       private IMember[] getSelectedInputElements() {
+               ISelection selection= getSelection();
+               if (selection instanceof IStructuredSelection) {
+                       Object[] elements= ((IStructuredSelection) selection).toArray();
+                       IMember[] members= new IMember[elements.length];
+                       for (int i= 0; i < elements.length; i++) {
+                               Object element= elements[i];
+                               if (CallHierarchy.isPossibleInputElement(element)) {
+                                       members[i]= (IMember) element;
+                               } else if (element instanceof MethodWrapper) {
+                                       IMember wrapped= ((MethodWrapper) element).getMember();
+                                       if (CallHierarchy.isPossibleInputElement(wrapped)) {
+                                               members[i]= wrapped;
+                                       } else {
+                                               return null;
+                                       }
+                               } else {
+                                       return null;
+                               }
+                       }
+                       if (members.length > 0)
+                               return members;
+               }
+               return null;
+       }
+
+       /*
+        * @see Action#run
+        */
+       @Override
+       public void run() {
+               IMember[] members= getSelectedInputElements();
+               if (members != null) {
+                       fPart.setInputElements(members);
+               }
+       }
+
+       private ISelection getSelection() {
+               ISelectionProvider provider= fPart.getSite().getSelectionProvider();
+
+               if (provider != null) {
+                       return provider.getSelection();
+               }
+
+               return null;
+       }
+}