| /******************************************************************************* |
| * Copyright (c) 2000, 2017 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.core.manipulation; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.SubProgressMonitor; |
| import org.eclipse.dltk.core.DLTKLanguageManager; |
| import org.eclipse.dltk.core.IDLTKLanguageToolkit; |
| import org.eclipse.dltk.core.ISourceModule; |
| import org.eclipse.dltk.internal.core.manipulation.ScriptManipulationPlugin; |
| import org.eclipse.dltk.internal.corext.refactoring.changes.UndoSourceModuleChange; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.ltk.core.refactoring.Change; |
| import org.eclipse.ltk.core.refactoring.ChangeDescriptor; |
| import org.eclipse.ltk.core.refactoring.ContentStamp; |
| import org.eclipse.ltk.core.refactoring.TextFileChange; |
| import org.eclipse.text.edits.UndoEdit; |
| |
| /** |
| * A {@link TextFileChange} that operates on an {@link ISourceModule} in the |
| * workspace. |
| * |
| * @since 1.3 |
| */ |
| public class SourceModuleChange extends TextFileChange { |
| |
| private final ISourceModule fCUnit; |
| |
| /** The (optional) refactoring descriptor */ |
| private ChangeDescriptor fDescriptor; |
| |
| /** |
| * Creates a new <code>SourceModuleChange</code>. |
| * |
| * @param name |
| * the change's name, mainly used to render the change in the UI |
| * @param cunit |
| * the compilation unit this change works on |
| */ |
| public SourceModuleChange(String name, ISourceModule cunit) { |
| super(name, getFile(cunit)); |
| Assert.isNotNull(cunit); |
| fCUnit = cunit; |
| IDLTKLanguageToolkit toolkit = DLTKLanguageManager.getLanguageToolkit(cunit); |
| if (toolkit != null) |
| setTextType(toolkit.getFileType()); |
| } |
| |
| private static IFile getFile(ISourceModule cunit) { |
| return (IFile) cunit.getResource(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object getModifiedElement() { |
| return fCUnit; |
| } |
| |
| /** |
| * Returns the compilation unit this change works on. |
| * |
| * @return the compilation unit this change works on |
| */ |
| public ISourceModule getSourceModule() { |
| return fCUnit; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected IDocument acquireDocument(IProgressMonitor pm) throws CoreException { |
| pm.beginTask("", 2); //$NON-NLS-1$ |
| fCUnit.becomeWorkingCopy(null, new SubProgressMonitor(pm, 1)); |
| return super.acquireDocument(new SubProgressMonitor(pm, 1)); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected void releaseDocument(IDocument document, IProgressMonitor pm) throws CoreException { |
| boolean isModified = isDocumentModified(); |
| super.releaseDocument(document, pm); |
| try { |
| fCUnit.discardWorkingCopy(); |
| } finally { |
| if (isModified && !isDocumentAcquired()) { |
| if (fCUnit.isWorkingCopy()) |
| fCUnit.reconcile(false /* don't force problem detection */, |
| null /* use primary owner */, |
| null /* no progress monitor */); |
| |
| else |
| fCUnit.makeConsistent(pm); |
| } |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected Change createUndoChange(UndoEdit edit, ContentStamp stampToRestore) { |
| try { |
| return new UndoSourceModuleChange(getName(), fCUnit, edit, stampToRestore, getSaveMode()); |
| } catch (CoreException e) { |
| ScriptManipulationPlugin.log(e); |
| return null; |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <T> T getAdapter(Class<T> adapter) { |
| if (ISourceModule.class.equals(adapter)) |
| return (T) fCUnit; |
| return super.getAdapter(adapter); |
| } |
| |
| /** |
| * Sets the refactoring descriptor for this change. |
| * |
| * @param descriptor |
| * the descriptor to set, or <code>null</code> to set no |
| * descriptor |
| */ |
| public void setDescriptor(ChangeDescriptor descriptor) { |
| fDescriptor = descriptor; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public ChangeDescriptor getDescriptor() { |
| return fDescriptor; |
| } |
| } |