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Case Study: adding data and statistics
[ifi-stolz-refaktor.git] / case-study / jdt-before / ui / org / eclipse / jdt / ui / actions / IntroduceIndirectionAction.java
diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/ui/actions/IntroduceIndirectionAction.java b/case-study/jdt-before/ui/org/eclipse/jdt/ui/actions/IntroduceIndirectionAction.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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.ui.actions;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.core.runtime.CoreException;
+
+import org.eclipse.jface.viewers.IStructuredSelection;
+
+import org.eclipse.jface.text.ITextSelection;
+
+import org.eclipse.ui.IWorkbenchSite;
+import org.eclipse.ui.PlatformUI;
+
+import org.eclipse.jdt.core.IClassFile;
+import org.eclipse.jdt.core.ICompilationUnit;
+import org.eclipse.jdt.core.IMethod;
+import org.eclipse.jdt.core.ITypeRoot;
+import org.eclipse.jdt.core.JavaModelException;
+
+import org.eclipse.jdt.internal.corext.refactoring.RefactoringAvailabilityTester;
+import org.eclipse.jdt.internal.corext.refactoring.RefactoringExecutionStarter;
+import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
+
+import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
+import org.eclipse.jdt.internal.ui.JavaPlugin;
+import org.eclipse.jdt.internal.ui.actions.ActionUtil;
+import org.eclipse.jdt.internal.ui.actions.SelectionConverter;
+import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor;
+import org.eclipse.jdt.internal.ui.javaeditor.JavaTextSelection;
+import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages;
+import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
+
+/**
+ * Action that introduces an indirection for a certain method. This action may be invoked
+ * on source or binary methods or method invocations with or without attached source.
+ *
+ * <p>
+ * This class may be instantiated; it is not intended to be subclassed.
+ * </p>
+ *
+ * @since 3.2
+ *
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class IntroduceIndirectionAction extends SelectionDispatchAction {
+
+       private JavaEditor fEditor;
+
+       /**
+        * Note: This constructor is for internal use only. Clients should not call this constructor.
+        * @param editor the compilation unit editor
+        *
+        * @noreference This constructor is not intended to be referenced by clients.
+        */
+       public IntroduceIndirectionAction(JavaEditor editor) {
+               this(editor.getEditorSite());
+               fEditor= editor;
+               setEnabled(true);
+       }
+
+       /**
+        * Creates a new <code>IntroduceIndirectionAction</code>.
+        *
+        * @param site the site providing context information for this action
+        */
+       public IntroduceIndirectionAction(IWorkbenchSite site) {
+               super(site);
+               setText(RefactoringMessages.IntroduceIndirectionAction_title);
+               setToolTipText(RefactoringMessages.IntroduceIndirectionAction_tooltip);
+               setDescription(RefactoringMessages.IntroduceIndirectionAction_description);
+               PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.INTRODUCE_INDIRECTION_ACTION);
+       }
+
+       //---- structured selection --------------------------------------------------
+
+       /*
+        * @see SelectionDispatchAction#selectionChanged(IStructuredSelection)
+        */
+       @Override
+       public void selectionChanged(IStructuredSelection selection) {
+               try {
+                       setEnabled(RefactoringAvailabilityTester.isIntroduceIndirectionAvailable(selection));
+               } catch (JavaModelException e) {
+                       if (JavaModelUtil.isExceptionToBeLogged(e))
+                               JavaPlugin.log(e);
+               }
+       }
+
+       /*
+        * @see SelectionDispatchAction#selectionChanged(ITextSelection)
+        */
+       @Override
+       public void selectionChanged(ITextSelection selection) {
+               setEnabled(true);
+       }
+
+       /**
+        * Note: This method is for internal use only. Clients should not call this method.
+        * 
+        * @param selection the Java text selection
+        * @noreference This method is not intended to be referenced by clients.
+        */
+       @Override
+       public void selectionChanged(JavaTextSelection selection) {
+               try {
+                       setEnabled(RefactoringAvailabilityTester.isIntroduceIndirectionAvailable(selection));
+               } catch (JavaModelException e) {
+                       setEnabled(false);
+               }
+       }
+
+       /*
+        * @see SelectionDispatchAction#run(IStructuredSelection)
+        */
+       @Override
+       public void run(IStructuredSelection selection) {
+               try {
+                       Assert.isTrue(RefactoringAvailabilityTester.isIntroduceIndirectionAvailable(selection));
+                       Object first= selection.getFirstElement();
+                       Assert.isTrue(first instanceof IMethod);
+                       if (!ActionUtil.isEditable(getShell(), (IMethod)first))
+                               return;
+                       run((IMethod) first);
+               } catch (CoreException e) {
+                       ExceptionHandler.handle(e, RefactoringMessages.IntroduceIndirectionAction_dialog_title, RefactoringMessages.IntroduceIndirectionAction_unknown_exception);
+               }
+       }
+
+       /* (non-Javadoc)
+        * Method declared on SelectionDispatchAction
+        */
+       @Override
+       public void run(ITextSelection selection) {
+               if (!ActionUtil.isProcessable(fEditor))
+                       return;
+               ITypeRoot editorInput= SelectionConverter.getInput(fEditor);
+               if (!ActionUtil.isEditable(getShell(), editorInput))
+                       return;
+               if (editorInput instanceof ICompilationUnit)
+                       run(selection.getOffset(), selection.getLength(), (ICompilationUnit) editorInput);
+               else if (editorInput instanceof IClassFile)
+                       run(selection.getOffset(), selection.getLength(), (IClassFile) editorInput);
+       }
+
+       private void run(int offset, int length, ICompilationUnit unit) {
+               RefactoringExecutionStarter.startIntroduceIndirectionRefactoring(unit, offset, length, getShell());
+       }
+
+       private void run(int offset, int length, IClassFile file) {
+               RefactoringExecutionStarter.startIntroduceIndirectionRefactoring(file, offset, length, getShell());
+       }
+
+       private void run(IMethod method) {
+               RefactoringExecutionStarter.startIntroduceIndirectionRefactoring(method, getShell());
+       }
+}