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