case-study/jdt-before/ui refactoring/org/eclipse/jdt/internal/ui/refactoring/reorg/ReorgMoveAction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui.refactoring.reorg;
  12
  13 import java.util.List;
  14
  15 import org.eclipse.core.resources.IResource;
  16
  17 import org.eclipse.jface.viewers.IStructuredSelection;
  18
  19 import org.eclipse.jface.text.ITextSelection;
  20
  21 import org.eclipse.ui.IWorkbenchSite;
  22 import org.eclipse.ui.PlatformUI;
  23 import org.eclipse.ui.actions.MoveProjectAction;
  24
  25 import org.eclipse.jdt.core.IJavaElement;
  26 import org.eclipse.jdt.core.JavaModelException;
  27
  28 import org.eclipse.jdt.internal.corext.refactoring.RefactoringAvailabilityTester;
  29 import org.eclipse.jdt.internal.corext.refactoring.RefactoringExecutionStarter;
  30 import org.eclipse.jdt.internal.corext.refactoring.reorg.ReorgUtils;
  31 import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
  32
  33 import org.eclipse.jdt.ui.actions.SelectionDispatchAction;
  34
  35 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
  36 import org.eclipse.jdt.internal.ui.JavaPlugin;
  37 import org.eclipse.jdt.internal.ui.javaeditor.JavaTextSelection;
  38 import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages;
  39 import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
  40
  41 public class ReorgMoveAction extends SelectionDispatchAction {
  42         public ReorgMoveAction(IWorkbenchSite site) {
  43                 super(site);
  44                 setText(ReorgMessages.ReorgMoveAction_3);
  45                 setDescription(ReorgMessages.ReorgMoveAction_4);
  46                 PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.MOVE_ACTION);
  47         }
  48
  49         @Override
  50         public void selectionChanged(IStructuredSelection selection) {
  51                 if (!selection.isEmpty()) {
  52                         if (ReorgUtils.containsOnlyProjects(selection.toList())) {
  53                                 setEnabled(createWorkbenchAction(selection).isEnabled());
  54                                 return;
  55                         }
  56                         try {
  57                                 List<?> elements= selection.toList();
  58                                 IResource[] resources= ReorgUtils.getResources(elements);
  59                                 IJavaElement[] javaElements= ReorgUtils.getJavaElements(elements);
  60                                 if (elements.size() != resources.length + javaElements.length)
  61                                         setEnabled(false);
  62                                 else
  63                                         setEnabled(RefactoringAvailabilityTester.isMoveAvailable(resources, javaElements));
  64                         } catch (JavaModelException e) {
  65                                 // no ui here - this happens on selection changes
  66                                 // http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253
  67                                 if (JavaModelUtil.isExceptionToBeLogged(e))
  68                                         JavaPlugin.log(e);
  69                                 setEnabled(false);
  70                         }
  71                 } else
  72                         setEnabled(false);
  73         }
  74
  75         @Override
  76         public void selectionChanged(ITextSelection selection) {
  77                 setEnabled(true);
  78         }
  79
  80         /**
  81          * Note: This method is for internal use only. Clients should not call this method.
  82          *
  83          * @param selection the selection
  84          *
  85          * @noreference This method is not intended to be referenced by clients.
  86          */
  87         @Override
  88         public void selectionChanged(JavaTextSelection selection) {
  89                 try {
  90                         setEnabled(RefactoringAvailabilityTester.isMoveAvailable(selection));
  91                 } catch (JavaModelException e) {
  92                         setEnabled(false);
  93                 }
  94         }
  95
  96         private MoveProjectAction createWorkbenchAction(IStructuredSelection selection) {
  97                 MoveProjectAction action= new MoveProjectAction(getSite());
  98                 action.selectionChanged(selection);
  99                 return action;
 100         }
 101
 102         @Override
 103         public void run(IStructuredSelection selection) {
 104                 if (ReorgUtils.containsOnlyProjects(selection.toList())) {
 105                         createWorkbenchAction(selection).run();
 106                         return;
 107                 }
 108                 try {
 109                         List<?> elements= selection.toList();
 110                         IResource[] resources= ReorgUtils.getResources(elements);
 111                         IJavaElement[] javaElements= ReorgUtils.getJavaElements(elements);
 112                         if (RefactoringAvailabilityTester.isMoveAvailable(resources, javaElements))
 113                                 RefactoringExecutionStarter.startMoveRefactoring(resources, javaElements, getShell());
 114                 } catch (JavaModelException e) {
 115                         ExceptionHandler.handle(e, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception);
 116                 }
 117         }
 118 }