net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/core/CreateWorkingCopyOperation.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 package net.sourceforge.phpdt.internal.core;
  12
  13 import java.util.Map;
  14
  15 import net.sourceforge.phpdt.core.IBufferFactory;
  16 import net.sourceforge.phpdt.core.ICompilationUnit;
  17 import net.sourceforge.phpdt.core.IJavaElement;
  18 import net.sourceforge.phpdt.core.IPackageFragment;
  19 import net.sourceforge.phpdt.core.IProblemRequestor;
  20 import net.sourceforge.phpdt.core.JavaModelException;
  21
  22
  23
  24 /**
  25  * Creates a new working copy and signal its addition through a delta.
  26  */
  27 public class CreateWorkingCopyOperation extends JavaModelOperation {
  28
  29         Map perFactoryWorkingCopies;
  30         IBufferFactory factory;
  31         IProblemRequestor problemRequestor;
  32
  33         /*
  34          * Creates a working copy from the given original cu and the given buffer factory.
  35          * perFactoryWorkingCopies map is not null if the working copy is a shared working copy.
  36          */
  37         public CreateWorkingCopyOperation(ICompilationUnit originalElement, Map perFactoryWorkingCopies, IBufferFactory factory, IProblemRequestor problemRequestor) {
  38                 super(new IJavaElement[] {originalElement});
  39                 this.perFactoryWorkingCopies = perFactoryWorkingCopies;
  40                 this.factory = factory;
  41                 this.problemRequestor = problemRequestor;
  42         }
  43         protected void executeOperation() throws JavaModelException {
  44                 ICompilationUnit cu = getCompilationUnit();
  45
  46                 WorkingCopy workingCopy = new WorkingCopy((IPackageFragment)cu.getParent(), cu.getElementName(), this.factory, this.problemRequestor);
  47                 // open the working copy now to ensure contents are that of the current state of this element
  48                 workingCopy.open(this.fMonitor);
  49
  50                 if (this.perFactoryWorkingCopies != null) {
  51                         this.perFactoryWorkingCopies.put(cu, workingCopy);
  52                         if (CompilationUnit.SHARED_WC_VERBOSE) {
  53                                 System.out.println("Creating shared working copy " + workingCopy.toStringWithAncestors()); //$NON-NLS-1$
  54                         }
  55                 }
  56
  57                 // report added java delta
  58                 JavaElementDelta delta = new JavaElementDelta(this.getJavaModel());
  59                 delta.added(workingCopy);
  60                 addDelta(delta);
  61
  62                 fResultElements = new IJavaElement[] {workingCopy};
  63         }
  64         /**
  65          * Returns the compilation unit this operation is working on.
  66          */
  67         protected ICompilationUnit getCompilationUnit() {
  68                 return (ICompilationUnit)getElementToProcess();
  69         }
  70         /**
  71          * @see JavaModelOperation#isReadOnly
  72          */
  73         public boolean isReadOnly() {
  74                 return true;
  75         }
  76
  77 }