net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/core/BecomeWorkingCopyOperation.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 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 package net.sourceforge.phpdt.internal.core;
  12
  13 import net.sourceforge.phpdt.core.IJavaElement;
  14 import net.sourceforge.phpdt.core.IJavaElementDelta;
  15 import net.sourceforge.phpdt.core.IProblemRequestor;
  16 import net.sourceforge.phpdt.core.JavaModelException;
  17
  18 /**
  19  * Switch and ICompilationUnit to working copy mode and signal the working copy
  20  * addition through a delta.
  21  */
  22 public class BecomeWorkingCopyOperation extends JavaModelOperation {
  23
  24         IProblemRequestor problemRequestor;
  25
  26         /*
  27          * Creates a BecomeWorkingCopyOperation for the given working copy.
  28          * perOwnerWorkingCopies map is not null if the working copy is a shared
  29          * working copy.
  30          */
  31         public BecomeWorkingCopyOperation(CompilationUnit workingCopy,
  32                         IProblemRequestor problemRequestor) {
  33                 super(new IJavaElement[] { workingCopy });
  34                 this.problemRequestor = problemRequestor;
  35         }
  36
  37         protected void executeOperation() throws JavaModelException {
  38
  39                 // open the working copy now to ensure contents are that of the current
  40                 // state of this element
  41                 CompilationUnit workingCopy = getWorkingCopy();
  42                 JavaModelManager.getJavaModelManager().getPerWorkingCopyInfo(
  43                                 workingCopy, true/* create if needed */, true/* record usage */,
  44                                 this.problemRequestor);
  45                 workingCopy.openWhenClosed(workingCopy.createElementInfo(),
  46                                 this.progressMonitor);
  47
  48                 if (!workingCopy.isPrimary()) {
  49                         // report added java delta for a non-primary working copy
  50                         JavaElementDelta delta = new JavaElementDelta(this.getJavaModel());
  51                         delta.added(workingCopy);
  52                         addDelta(delta);
  53                 } else {
  54                         if (workingCopy.getResource().isAccessible()) {
  55                                 // report a F_PRIMARY_WORKING_COPY change delta for a primary
  56                                 // working copy
  57                                 JavaElementDelta delta = new JavaElementDelta(this
  58                                                 .getJavaModel());
  59                                 delta.changed(workingCopy,
  60                                                 IJavaElementDelta.F_PRIMARY_WORKING_COPY);
  61                                 addDelta(delta);
  62                         } else {
  63                                 // report an ADDED delta
  64                                 JavaElementDelta delta = new JavaElementDelta(this
  65                                                 .getJavaModel());
  66                                 delta.added(workingCopy,
  67                                                 IJavaElementDelta.F_PRIMARY_WORKING_COPY);
  68                                 addDelta(delta);
  69                         }
  70                 }
  71
  72                 this.resultElements = new IJavaElement[] { workingCopy };
  73         }
  74
  75         /*
  76          * Returns the working copy this operation is working on.
  77          */
  78         protected CompilationUnit getWorkingCopy() {
  79                 return (CompilationUnit) getElementToProcess();
  80         }
  81
  82         /*
  83          * @see JavaModelOperation#isReadOnly
  84          */
  85         public boolean isReadOnly() {
  86                 return true;
  87         }
  88
  89 }