case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/changes/CompilationUnitReorgChange.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.corext.refactoring.changes;
  12
  13 import org.eclipse.core.runtime.CoreException;
  14 import org.eclipse.core.runtime.IProgressMonitor;
  15 import org.eclipse.core.runtime.OperationCanceledException;
  16 import org.eclipse.core.runtime.SubProgressMonitor;
  17
  18 import org.eclipse.core.resources.IResource;
  19 import org.eclipse.core.resources.mapping.ResourceMapping;
  20
  21 import org.eclipse.ltk.core.refactoring.Change;
  22 import org.eclipse.ltk.core.refactoring.participants.ReorgExecutionLog;
  23 import org.eclipse.ltk.core.refactoring.resource.ResourceChange;
  24
  25 import org.eclipse.jdt.core.ICompilationUnit;
  26 import org.eclipse.jdt.core.IPackageFragment;
  27 import org.eclipse.jdt.core.JavaCore;
  28
  29 import org.eclipse.jdt.internal.corext.refactoring.reorg.INewNameQuery;
  30 import org.eclipse.jdt.internal.corext.util.JavaElementResourceMapping;
  31
  32 import org.eclipse.jdt.ui.JavaElementLabels;
  33
  34 abstract class CompilationUnitReorgChange extends ResourceChange {
  35
  36         private String fCuHandle;
  37         private String fOldPackageHandle;
  38         private String fNewPackageHandle;
  39
  40         private INewNameQuery fNewNameQuery;
  41
  42         CompilationUnitReorgChange(ICompilationUnit cu, IPackageFragment dest, INewNameQuery newNameQuery) {
  43                 fCuHandle= cu.getHandleIdentifier();
  44                 fNewPackageHandle= dest.getHandleIdentifier();
  45                 fNewNameQuery= newNameQuery;
  46                 fOldPackageHandle= cu.getParent().getHandleIdentifier();
  47         }
  48
  49         CompilationUnitReorgChange(ICompilationUnit cu, IPackageFragment dest) {
  50                 this(cu, dest, null);
  51         }
  52
  53         CompilationUnitReorgChange(String oldPackageHandle, String newPackageHandle, String cuHandle) {
  54                 fOldPackageHandle= oldPackageHandle;
  55                 fNewPackageHandle= newPackageHandle;
  56                 fCuHandle= cuHandle;
  57         }
  58
  59         @Override
  60         public final Change perform(IProgressMonitor pm) throws CoreException, OperationCanceledException {
  61                 pm.beginTask(getName(), 1);
  62                 try {
  63                         ICompilationUnit unit= getCu();
  64                         ResourceMapping mapping= JavaElementResourceMapping.create(unit);
  65                         Change result= doPerformReorg(new SubProgressMonitor(pm, 1));
  66                         markAsExecuted(unit, mapping);
  67                         return result;
  68                 } finally {
  69                         pm.done();
  70                 }
  71         }
  72
  73         abstract Change doPerformReorg(IProgressMonitor pm) throws CoreException, OperationCanceledException;
  74
  75         @Override
  76         public Object getModifiedElement() {
  77                 return getCu();
  78         }
  79
  80         /* (non-Javadoc)
  81          * @see org.eclipse.jdt.internal.corext.refactoring.base.JDTChange#getModifiedResource()
  82          */
  83         @Override
  84         protected IResource getModifiedResource() {
  85                 ICompilationUnit cu= getCu();
  86                 if (cu != null) {
  87                         return cu.getResource();
  88                 }
  89                 return null;
  90         }
  91
  92         ICompilationUnit getCu() {
  93                 return (ICompilationUnit)JavaCore.create(fCuHandle);
  94         }
  95
  96         IPackageFragment getOldPackage() {
  97                 return (IPackageFragment)JavaCore.create(fOldPackageHandle);
  98         }
  99
 100         IPackageFragment getDestinationPackage() {
 101                 return (IPackageFragment)JavaCore.create(fNewPackageHandle);
 102         }
 103
 104         String getNewName() throws OperationCanceledException {
 105                 if (fNewNameQuery == null)
 106                         return null;
 107                 return fNewNameQuery.getNewName();
 108         }
 109
 110         static String getPackageName(IPackageFragment pack) {
 111                 return JavaElementLabels.getElementLabel(pack, JavaElementLabels.ALL_DEFAULT);
 112         }
 113
 114         private void markAsExecuted(ICompilationUnit unit, ResourceMapping mapping) {
 115                 ReorgExecutionLog log= (ReorgExecutionLog)getAdapter(ReorgExecutionLog.class);
 116                 if (log != null) {
 117                         log.markAsProcessed(unit);
 118                         log.markAsProcessed(mapping);
 119                 }
 120         }
 121 }