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
  20  * and signal the working copy 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 working copy.
  29          */
  30         public BecomeWorkingCopyOperation(CompilationUnit workingCopy, IProblemRequestor problemRequestor) {
  31                 super(new IJavaElement[] {workingCopy});
  32                 this.problemRequestor = problemRequestor;
  33         }
  34         protected void executeOperation() throws JavaModelException {
  35
  36                 // open the working copy now to ensure contents are that of the current state of this element
  37                 CompilationUnit workingCopy = getWorkingCopy();
  38                 JavaModelManager.getJavaModelManager().getPerWorkingCopyInfo(workingCopy, true/*create if needed*/, true/*record usage*/, this.problemRequestor);
  39                 workingCopy.openWhenClosed(workingCopy.createElementInfo(), this.progressMonitor);
  40
  41                 if (!workingCopy.isPrimary()) {
  42                         // report added java delta for a non-primary working copy
  43                         JavaElementDelta delta = new JavaElementDelta(this.getJavaModel());
  44                         delta.added(workingCopy);
  45                         addDelta(delta);
  46                 } else {
  47                         if (workingCopy.getResource().isAccessible()) {
  48                                 // report a F_PRIMARY_WORKING_COPY change delta for a primary working copy
  49                                 JavaElementDelta delta = new JavaElementDelta(this.getJavaModel());
  50                                 delta.changed(workingCopy, IJavaElementDelta.F_PRIMARY_WORKING_COPY);
  51                                 addDelta(delta);
  52                         } else {
  53                                 // report an ADDED delta
  54                                 JavaElementDelta delta = new JavaElementDelta(this.getJavaModel());
  55                                 delta.added(workingCopy, IJavaElementDelta.F_PRIMARY_WORKING_COPY);
  56                                 addDelta(delta);
  57                         }
  58                 }
  59
  60                 this.resultElements = new IJavaElement[] {workingCopy};
  61         }
  62         /*
  63          * Returns the working copy this operation is working on.
  64          */
  65         protected CompilationUnit getWorkingCopy() {
  66                 return (CompilationUnit)getElementToProcess();
  67         }
  68         /*
  69          * @see JavaModelOperation#isReadOnly
  70          */
  71         public boolean isReadOnly() {
  72                 return true;
  73         }
  74
  75 }