| /******************************************************************************* |
| * Copyright (c) 2000, 2016 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 477789 |
| *******************************************************************************/ |
| package org.eclipse.jdt.core.refactoring; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.SubMonitor; |
| |
| import org.eclipse.core.resources.IFile; |
| |
| import org.eclipse.text.edits.UndoEdit; |
| |
| 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.jdt.core.ICompilationUnit; |
| |
| import org.eclipse.jdt.internal.core.manipulation.JavaManipulationPlugin; |
| |
| /** |
| * A {@link TextFileChange} that operates on an {@link ICompilationUnit} in the workspace. |
| * |
| * @since 1.3 |
| */ |
| public class CompilationUnitChange extends TextFileChange { |
| |
| private final ICompilationUnit fCUnit; |
| |
| /** The (optional) refactoring descriptor */ |
| private ChangeDescriptor fDescriptor; |
| |
| /** |
| * Creates a new <code>CompilationUnitChange</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 CompilationUnitChange(String name, ICompilationUnit cunit) { |
| super(name, getFile(cunit)); |
| Assert.isNotNull(cunit); |
| fCUnit= cunit; |
| setTextType("java"); //$NON-NLS-1$ |
| } |
| |
| private static IFile getFile(ICompilationUnit cunit) { |
| return (IFile) cunit.getResource(); |
| } |
| |
| @Override |
| public Object getModifiedElement(){ |
| return fCUnit; |
| } |
| |
| /** |
| * Returns the compilation unit this change works on. |
| * |
| * @return the compilation unit this change works on |
| */ |
| public ICompilationUnit getCompilationUnit() { |
| return fCUnit; |
| } |
| |
| @Override |
| protected IDocument acquireDocument(IProgressMonitor pm) throws CoreException { |
| SubMonitor subMonitor= SubMonitor.convert(pm, 2); |
| fCUnit.becomeWorkingCopy(subMonitor.split(1)); |
| Assert.isTrue(fCUnit.isWorkingCopy(), fCUnit.toString()); |
| return super.acquireDocument(subMonitor.split(1)); |
| } |
| |
| @Override |
| protected void releaseDocument(IDocument document, IProgressMonitor pm) throws CoreException { |
| boolean isModified= isDocumentModified(); |
| SubMonitor subMonitor= SubMonitor.convert(pm, 2); |
| super.releaseDocument(document, subMonitor.split(1)); |
| try { |
| fCUnit.discardWorkingCopy(); |
| } finally { |
| if (isModified && !isDocumentAcquired()) { |
| if (fCUnit.isWorkingCopy()) |
| fCUnit.reconcile( |
| ICompilationUnit.NO_AST, |
| false /* don't force problem detection */, |
| null /* use primary owner */, |
| subMonitor.split(1, SubMonitor.SUPPRESS_BEGINTASK | SubMonitor.SUPPRESS_ISCANCELED)); |
| |
| else |
| fCUnit.makeConsistent(subMonitor.split(1, SubMonitor.SUPPRESS_BEGINTASK | SubMonitor.SUPPRESS_ISCANCELED)); |
| } |
| } |
| } |
| |
| @Override |
| protected Change createUndoChange(UndoEdit edit, ContentStamp stampToRestore) { |
| try { |
| return new UndoCompilationUnitChange(getName(), fCUnit, edit, stampToRestore, getSaveMode()); |
| } catch (CoreException e) { |
| JavaManipulationPlugin.log(e); |
| return null; |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <T> T getAdapter(Class<T> adapter) { |
| if (ICompilationUnit.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; |
| } |
| |
| @Override |
| public ChangeDescriptor getDescriptor() { |
| return fDescriptor; |
| } |
| } |
| |