/*******************************************************************************
* 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.ui.compare;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.ui.history.ElementLocalHistoryPageSource;
import org.eclipse.team.ui.history.HistoryPageCompareEditorInput;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.filebuffers.FileBuffers;
import org.eclipse.core.filebuffers.ITextFileBuffer;
import org.eclipse.core.filebuffers.ITextFileBufferManager;
import org.eclipse.core.filebuffers.LocationKind;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.TextUtilities;
import org.eclipse.compare.CompareConfiguration;
import org.eclipse.compare.CompareUI;
import org.eclipse.compare.IStreamContentAccessor;
import org.eclipse.compare.ITypedElement;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IMember;
import org.eclipse.jdt.core.ISourceRange;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.SourceRange;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.AnnotationTypeDeclaration;
import org.eclipse.jdt.core.dom.BodyDeclaration;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.EnumDeclaration;
import org.eclipse.jdt.core.dom.NodeFinder;
import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.jdt.internal.corext.dom.ASTNodes;
import org.eclipse.jdt.internal.corext.util.Resources;
import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor;
import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
/**
* Provides "Replace from local history" for Java elements.
*/
class JavaReplaceWithEditionActionImpl extends JavaHistoryActionImpl {
protected boolean fPrevious= false;
JavaReplaceWithEditionActionImpl(boolean previous) {
super(true);
fPrevious= previous;
}
@Override
public void run(ISelection selection) {
Shell shell= getShell();
final IMember input= getEditionElement(selection);
if (input == null) {
MessageDialog.openInformation(shell, CompareMessages.ReplaceFromHistory_title, CompareMessages.ReplaceFromHistory_invalidSelectionMessage);
return;
}
final IFile file= getFile(input);
if (file == null) {
showError();
return;
}
IStatus status= Resources.makeCommittable(file, shell);
if (!status.isOK()) {
return;
}
if (fPrevious) {
String errorTitle= CompareMessages.ReplaceFromHistory_title;
String errorMessage= CompareMessages.ReplaceFromHistory_internalErrorMessage;
try {
ITypedElement ti = ElementLocalHistoryPageSource.getPreviousEdition(file, input);
if (ti == null) {
MessageDialog.openInformation(shell, errorTitle, CompareMessages.ReplaceFromHistory_parsingErrorMessage);
return;
}
replace(input, file, ti);
} catch (TeamException e) {
ExceptionHandler.handle(e, shell, errorTitle, errorMessage);
}
} else {
JavaElementHistoryPageSource pageSource = JavaElementHistoryPageSource.getInstance();
CompareConfiguration cc = new CompareConfiguration();
cc.setLeftEditable(false);
cc.setRightEditable(false);
HistoryPageCompareEditorInput ci = new HistoryPageCompareEditorInput(cc, pageSource, input) {
@Override
protected void performReplace(Object selectedElement) {
if (selectedElement instanceof ITypedElement) {
JavaReplaceWithEditionActionImpl.this.replace(input, file, (ITypedElement)selectedElement);
}
}
};
ci.setReplace(true);
ci.setTitle(CompareMessages.JavaReplaceWithEditionActionImpl_0);
ci.setHelpContextId(IJavaHelpContextIds.REPLACE_ELEMENT_WITH_HISTORY_DIALOG);
CompareUI.openCompareDialog(ci);
}
}
public void replace(IMember input, IFile file, ITypedElement element) {
Shell shell= getShell();
String errorTitle= CompareMessages.ReplaceFromHistory_title;
String errorMessage= CompareMessages.ReplaceFromHistory_internalErrorMessage;
// get the document where to insert the text
IPath path= file.getFullPath();
ITextFileBufferManager bufferManager= FileBuffers.getTextFileBufferManager();
ITextFileBuffer textFileBuffer= null;
try {
bufferManager.connect(path, LocationKind.IFILE, null);
textFileBuffer= bufferManager.getTextFileBuffer(path, LocationKind.IFILE);
IDocument document= textFileBuffer.getDocument();
performReplace(input, file, textFileBuffer, document, element);
} catch(InvocationTargetException ex) {
ExceptionHandler.handle(ex, shell, errorTitle, errorMessage);
} catch(InterruptedException ex) {
// shouldn't be called because is not cancelable
Assert.isTrue(false);
} catch(CoreException ex) {
ExceptionHandler.handle(ex, shell, errorTitle, errorMessage);
} finally {
try {
if (textFileBuffer != null)
bufferManager.disconnect(path, LocationKind.IFILE, null);
} catch (CoreException e) {
JavaPlugin.log(e);
}
}
}
private void performReplace(IMember input, IFile file,
ITextFileBuffer textFileBuffer, IDocument document, ITypedElement ti)
throws CoreException, JavaModelException,
InvocationTargetException, InterruptedException {
if (ti instanceof IStreamContentAccessor) {
boolean inEditor= beingEdited(file);
String content= JavaCompareUtilities.readString((IStreamContentAccessor)ti);
String newContent= trimTextBlock(content, TextUtilities.getDefaultLineDelimiter(document), input.getJavaProject());
if (newContent == null) {
showError();
return;
}
ICompilationUnit compilationUnit= input.getCompilationUnit();
CompilationUnit root= parsePartialCompilationUnit(compilationUnit);
ISourceRange nameRange= input.getNameRange();
if (nameRange == null)
nameRange= input.getSourceRange();
// workaround for bug in getNameRange(): for AnnotationMembers length is negative
int length= nameRange.getLength();
if (length < 0)
length= 1;
ASTNode node2= NodeFinder.perform(root, new SourceRange(nameRange.getOffset(), length));
ASTNode node;
if (node2.getNodeType() == ASTNode.INITIALIZER)
node= node2;
else
node= ASTNodes.getParent(node2, BodyDeclaration.class);
if (node == null)
node= ASTNodes.getParent(node2, AnnotationTypeDeclaration.class);
if (node == null)
node= ASTNodes.getParent(node2, EnumDeclaration.class);
//ASTNode node= getBodyContainer(root, input);
if (node == null) {
showError();
return;
}
ASTRewrite rewriter= ASTRewrite.create(root.getAST());
rewriter.replace(node, rewriter.createStringPlaceholder(newContent, node.getNodeType()), null);
if (inEditor) {
JavaEditor je= getEditor(file);
if (je != null)
je.setFocus();
}
Map<String, String> options= null;
IJavaProject javaProject= compilationUnit.getJavaProject();
if (javaProject != null)
options= javaProject.getOptions(true);
applyChanges(rewriter, document, textFileBuffer, getShell(), inEditor, options);
}
}
private void showError() {
MessageDialog.openError(getShell(), CompareMessages.ReplaceFromHistory_title, CompareMessages.ReplaceFromHistory_internalErrorMessage);
}
}