net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpeclipse/phpeditor/WorkingCopyManager.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11
  12 package net.sourceforge.phpeclipse.phpeditor;
  13
  14 import java.util.HashMap;
  15 import java.util.Map;
  16
  17 import net.sourceforge.phpdt.core.ICompilationUnit;
  18 import net.sourceforge.phpdt.ui.IWorkingCopyManager;
  19 import net.sourceforge.phpdt.ui.IWorkingCopyManagerExtension;
  20
  21 import org.eclipse.core.runtime.CoreException;
  22 //incastrix
  23 //import org.eclipse.jface.text.Assert;
  24 import org.eclipse.core.runtime.Assert;
  25 import org.eclipse.ui.IEditorInput;
  26
  27 /**
  28  * This working copy manager works together with a given compilation unit
  29  * document provider and additionally offers to "overwrite" the working copy
  30  * provided by this document provider.
  31  */
  32 public class WorkingCopyManager implements IWorkingCopyManager,
  33                 IWorkingCopyManagerExtension {
  34
  35         private ICompilationUnitDocumentProvider fDocumentProvider;
  36
  37         private Map fMap;
  38
  39         private boolean fIsShuttingDown;
  40
  41         /**
  42          * Creates a new working copy manager that co-operates with the given
  43          * compilation unit document provider.
  44          *
  45          * @param provider
  46          *            the provider
  47          */
  48         public WorkingCopyManager(ICompilationUnitDocumentProvider provider) {
  49                 Assert.isNotNull(provider);
  50                 fDocumentProvider = provider;
  51         }
  52
  53         /*
  54          * @see net.sourceforge.phpdt.ui.IWorkingCopyManager#connect(org.eclipse.ui.IEditorInput)
  55          */
  56         public void connect(IEditorInput input) throws CoreException {
  57                 fDocumentProvider.connect(input);
  58         }
  59
  60         /*
  61          * @see net.sourceforge.phpdt.ui.IWorkingCopyManager#disconnect(org.eclipse.ui.IEditorInput)
  62          */
  63         public void disconnect(IEditorInput input) {
  64                 fDocumentProvider.disconnect(input);
  65         }
  66
  67         /*
  68          * @see net.sourceforge.phpdt.ui.IWorkingCopyManager#shutdown()
  69          */
  70         public void shutdown() {
  71                 if (!fIsShuttingDown) {
  72                         fIsShuttingDown = true;
  73                         try {
  74                                 if (fMap != null) {
  75                                         fMap.clear();
  76                                         fMap = null;
  77                                 }
  78                                 fDocumentProvider.shutdown();
  79                         } finally {
  80                                 fIsShuttingDown = false;
  81                         }
  82                 }
  83         }
  84
  85         /*
  86          * @see net.sourceforge.phpdt.ui.IWorkingCopyManager#getWorkingCopy(org.eclipse.ui.IEditorInput)
  87          */
  88         public ICompilationUnit getWorkingCopy(IEditorInput input) {
  89                 ICompilationUnit unit = fMap == null ? null : (ICompilationUnit) fMap
  90                                 .get(input);
  91                 return unit != null ? unit : fDocumentProvider.getWorkingCopy(input);
  92         }
  93
  94         /*
  95          * @see net.sourceforge.phpdt.internal.ui.javaeditor.IWorkingCopyManagerExtension#setWorkingCopy(org.eclipse.ui.IEditorInput,
  96          *      net.sourceforge.phpdt.core.ICompilationUnit)
  97          */
  98         public void setWorkingCopy(IEditorInput input, ICompilationUnit workingCopy) {
  99                 if (fDocumentProvider.getDocument(input) != null) {
 100                         if (fMap == null)
 101                                 fMap = new HashMap();
 102                         fMap.put(input, workingCopy);
 103                 }
 104         }
 105
 106         /*
 107          * @see net.sourceforge.phpdt.internal.ui.javaeditor.IWorkingCopyManagerExtension#removeWorkingCopy(org.eclipse.ui.IEditorInput)
 108          */
 109         public void removeWorkingCopy(IEditorInput input) {
 110                 fMap.remove(input);
 111                 if (fMap.isEmpty())
 112                         fMap = null;
 113         }
 114 }