| /******************************************************************************* |
| * Copyright (c) 2000, 2011 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.jdt.internal.corext.refactoring.changes; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.UnsupportedEncodingException; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map.Entry; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.NullProgressMonitor; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.runtime.SubProgressMonitor; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| |
| import org.eclipse.core.filebuffers.FileBuffers; |
| import org.eclipse.core.filebuffers.ITextFileBufferManager; |
| import org.eclipse.core.filebuffers.LocationKind; |
| |
| import org.eclipse.text.edits.ReplaceEdit; |
| |
| import org.eclipse.ui.ide.undo.ResourceDescription; |
| |
| import org.eclipse.ltk.core.refactoring.Change; |
| import org.eclipse.ltk.core.refactoring.CompositeChange; |
| import org.eclipse.ltk.core.refactoring.NullChange; |
| import org.eclipse.ltk.core.refactoring.TextFileChange; |
| |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.IPackageFragmentRoot; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jdt.internal.corext.Corext; |
| import org.eclipse.jdt.internal.corext.refactoring.RefactoringCoreMessages; |
| import org.eclipse.jdt.internal.corext.refactoring.reorg.IPackageFragmentRootManipulationQuery; |
| import org.eclipse.jdt.internal.corext.refactoring.util.JavaElementUtil; |
| import org.eclipse.jdt.internal.corext.util.Messages; |
| |
| import org.eclipse.jdt.ui.JavaElementLabels; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels; |
| |
| public class DeletePackageFragmentRootChange extends AbstractDeleteChange { |
| |
| private final String fHandle; |
| private final IPackageFragmentRootManipulationQuery fUpdateClasspathQuery; |
| |
| public DeletePackageFragmentRootChange(IPackageFragmentRoot root, boolean isExecuteChange, |
| IPackageFragmentRootManipulationQuery updateClasspathQuery) { |
| Assert.isNotNull(root); |
| Assert.isTrue(! root.isExternal()); |
| fHandle= root.getHandleIdentifier(); |
| fUpdateClasspathQuery= updateClasspathQuery; |
| |
| if (isExecuteChange) { |
| // don't check for read-only resources since we already |
| // prompt the user via a dialog to confirm deletion of |
| // read only resource. The change is currently not used |
| // as |
| setValidationMethod(VALIDATE_NOT_DIRTY); |
| } else { |
| setValidationMethod(VALIDATE_NOT_DIRTY | VALIDATE_NOT_READ_ONLY); |
| } |
| } |
| |
| @Override |
| public String getName() { |
| String rootName= JavaElementLabels.getElementLabel(getRoot(), JavaElementLabels.ALL_DEFAULT); |
| return Messages.format(RefactoringCoreMessages.DeletePackageFragmentRootChange_delete, rootName); |
| } |
| |
| @Override |
| public Object getModifiedElement() { |
| return getRoot(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.internal.corext.refactoring.base.JDTChange#getModifiedResource() |
| */ |
| @Override |
| protected IResource getModifiedResource() { |
| return getRoot().getResource(); |
| } |
| |
| private IPackageFragmentRoot getRoot(){ |
| return (IPackageFragmentRoot)JavaCore.create(fHandle); |
| } |
| |
| @Override |
| protected Change doDelete(IProgressMonitor pm) throws CoreException { |
| if (! confirmDeleteIfReferenced()) |
| return new NullChange(); |
| int resourceUpdateFlags= IResource.KEEP_HISTORY; |
| int jCoreUpdateFlags= IPackageFragmentRoot.ORIGINATING_PROJECT_CLASSPATH | IPackageFragmentRoot.OTHER_REFERRING_PROJECTS_CLASSPATH; |
| |
| pm.beginTask("", 2); //$NON-NLS-1$ |
| IPackageFragmentRoot root= getRoot(); |
| IResource rootResource= root.getResource(); |
| CompositeChange result= new CompositeChange(getName()); |
| |
| ResourceDescription rootDescription = ResourceDescription.fromResource(rootResource); |
| IJavaProject[] referencingProjects= JavaElementUtil.getReferencingProjects(root); |
| HashMap<IFile, String> classpathFilesContents= new HashMap<IFile, String>(); |
| for (int i= 0; i < referencingProjects.length; i++) { |
| IJavaProject javaProject= referencingProjects[i]; |
| IFile classpathFile= javaProject.getProject().getFile(".classpath"); //$NON-NLS-1$ |
| if (classpathFile.exists()) { |
| classpathFilesContents.put(classpathFile, getFileContents(classpathFile)); |
| } |
| } |
| |
| root.delete(resourceUpdateFlags, jCoreUpdateFlags, new SubProgressMonitor(pm, 1)); |
| |
| rootDescription.recordStateFromHistory(rootResource, new SubProgressMonitor(pm, 1)); |
| for (Iterator<Entry<IFile, String>> iterator= classpathFilesContents.entrySet().iterator(); iterator.hasNext();) { |
| Entry<IFile, String> entry= iterator.next(); |
| IFile file= entry.getKey(); |
| String contents= entry.getValue(); |
| //Restore time stamps? This should probably be some sort of UndoTextFileChange. |
| TextFileChange classpathUndo= new TextFileChange(Messages.format(RefactoringCoreMessages.DeletePackageFragmentRootChange_restore_file, BasicElementLabels.getPathLabel(file.getFullPath(), true)), file); |
| classpathUndo.setEdit(new ReplaceEdit(0, getFileLength(file), contents)); |
| result.add(classpathUndo); |
| } |
| result.add(new UndoDeleteResourceChange(rootDescription)); |
| |
| pm.done(); |
| return result; |
| } |
| |
| private static String getFileContents(IFile file) throws CoreException { |
| ITextFileBufferManager manager= FileBuffers.getTextFileBufferManager(); |
| IPath path= file.getFullPath(); |
| manager.connect(path, LocationKind.IFILE, new NullProgressMonitor()); |
| try { |
| return manager.getTextFileBuffer(path, LocationKind.IFILE).getDocument().get(); |
| } finally { |
| manager.disconnect(path, LocationKind.IFILE, new NullProgressMonitor()); |
| } |
| } |
| |
| private static int getFileLength(IFile file) throws CoreException { |
| // Cannot use file buffers here, since they are not yet in sync at this point. |
| InputStream contents= file.getContents(); |
| InputStreamReader reader; |
| try { |
| reader= new InputStreamReader(contents, file.getCharset()); |
| } catch (UnsupportedEncodingException e) { |
| JavaPlugin.log(e); |
| reader= new InputStreamReader(contents); |
| } |
| try { |
| return (int) reader.skip(Integer.MAX_VALUE); |
| } catch (IOException e) { |
| throw new CoreException(new Status(IStatus.ERROR, Corext.getPluginId(), e.getMessage(), e)); |
| } finally { |
| try { |
| reader.close(); |
| } catch (IOException e) { |
| } |
| } |
| } |
| |
| private boolean confirmDeleteIfReferenced() throws JavaModelException { |
| IPackageFragmentRoot root= getRoot(); |
| if (!root.isArchive() && !root.isExternal()) //for source folders, you don't ask, just do it |
| return true; |
| if (fUpdateClasspathQuery == null) |
| return true; |
| IJavaProject[] referencingProjects= JavaElementUtil.getReferencingProjects(getRoot()); |
| if (referencingProjects.length <= 1) |
| return true; |
| return fUpdateClasspathQuery.confirmManipulation(getRoot(), referencingProjects); |
| } |
| } |