/*******************************************************************************
* 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.ui.refactoring;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IField;
import org.eclipse.jdt.core.ILocalVariable;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.ITypeParameter;
import org.eclipse.jdt.core.refactoring.descriptors.RenameJavaElementDescriptor;
import org.eclipse.jdt.internal.corext.refactoring.rename.JavaRenameProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.MethodChecks;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameCompilationUnitProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameEnumConstProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameFieldProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameLocalVariableProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameNonVirtualMethodProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenamePackageProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameTypeParameterProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameTypeProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameVirtualMethodProcessor;
import org.eclipse.jdt.internal.corext.refactoring.tagging.INameUpdating;
import org.eclipse.jdt.internal.corext.refactoring.tagging.IReferenceUpdating;
import org.eclipse.jdt.internal.corext.refactoring.tagging.ITextUpdating;
import org.eclipse.jdt.internal.corext.util.JdtFlags;
import org.eclipse.jdt.internal.ui.JavaUIMessages;
import org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper;
import org.eclipse.ltk.core.refactoring.PerformChangeOperation;
import org.eclipse.ltk.core.refactoring.RefactoringCore;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.participants.RenameRefactoring;
import java.lang.reflect.InvocationTargetException;
/**
* Central access point to execute rename refactorings.
* <p>
* Note: this class is not intended to be subclassed or instantiated.
* </p>
* @since 2.1
*
* @noinstantiate This class is not intended to be instantiated by clients.
* @noextend This class is not intended to be subclassed by clients.
*/
public class RenameSupport {
private RenameRefactoring fRefactoring;
private RefactoringStatus fPreCheckStatus;
private PerformChangeOperation fPerformChangeOperation;
/**
* Executes some light weight precondition checking. If the returned status
* is an error then the refactoring can't be executed at all. However,
* returning an OK status doesn't guarantee that the refactoring can be
* executed. It may still fail while performing the exhaustive precondition
* checking done inside the methods <code>openDialog</code> or
* <code>perform</code>.
*
* The method is mainly used to determine enable/disablement of actions.
*
* @return the result of the light weight precondition checking.
*
* @throws CoreException if an unexpected exception occurs while performing the checking.
*
*/
public IStatus preCheck() throws CoreException {
ensureChecked();
if (fPreCheckStatus.hasFatalError())
return fPreCheckStatus.getEntryMatchingSeverity(RefactoringStatus.FATAL).toStatus();
else
return Status.OK_STATUS;
}
public RenameRefactoring getfRefactoring() {
return fRefactoring;
}
public PerformChangeOperation getfPerformChangeOperation() {
return fPerformChangeOperation;
}
// /**
// * Opens the refactoring dialog for this rename support.
// *
// * @param parent a shell used as a parent for the refactoring dialog.
// * @throws CoreException if an unexpected exception occurs while opening the
// * dialog.
// *
// * @see #openDialog(Shell, boolean)
// */
// public void openDialog(Shell parent) throws CoreException {
// openDialog(parent, false);
// }
//
// /**
// * Opens the refactoring dialog for this rename support.
// *
// * <p>
// * This method has to be called from within the UI thread.
// * </p>
// *
// * @param parent a shell used as a parent for the refactoring, preview, or error dialog
// * @param showPreviewOnly if <code>true</code>, the dialog skips all user input pages and
// * directly shows the preview or error page. Otherwise, shows all pages.
// * @return <code>true</code> if the refactoring has been executed successfully,
// * <code>false</code> if it has been canceled or if an error has happened during
// * initial conditions checking.
// *
// * @throws CoreException if an error occurred while executing the
// * operation.
// *
// * @see #openDialog(Shell)
// * @since 3.3
// */
// public boolean openDialog(Shell parent, boolean showPreviewOnly) throws CoreException {
// ensureChecked();
// if (fPreCheckStatus.hasFatalError()) {
// showInformation(parent, fPreCheckStatus);
// return false;
// }
//
// UserInterfaceStarter starter;
// if (!showPreviewOnly) {
// starter = RenameUserInterfaceManager.getDefault().getStarter(fRefactoring);
// } else {
// starter = new RenameUserInterfaceStarter();
// RenameRefactoringWizard wizard = new RenameRefactoringWizard(fRefactoring, fRefactoring.getName(), null, null, null) {
// @Override
// protected void addUserInputPages() {
// // nothing to add
// }
// };
// wizard.setForcePreviewReview(showPreviewOnly);
// starter.initialize(wizard);
// }
// return starter.activate(fRefactoring, parent, getJavaRenameProcessor().getSaveMode());
// }
//
/**
* Executes the rename refactoring without showing a dialog to gather
* additional user input (for example the new name of the <tt>IJavaElement</tt>).
* Only an error dialog is shown (if necessary) to present the result
* of the refactoring's full precondition checking.
* <p>
* The method has to be called from within the UI thread.
* </p>
*
*
* @throws InterruptedException if the operation has been canceled by the
* user.
* @throws InvocationTargetException if an error occurred while executing the
* operation.
*/
public RefactoringStatus perform() throws InterruptedException, InvocationTargetException {
try {
ensureChecked();
if (fPreCheckStatus.hasFatalError()) {
return fPreCheckStatus;
}
RefactoringExecutionHelper helper= new RefactoringExecutionHelper(fRefactoring,
RefactoringCore.getConditionCheckingFailedSeverity(),
getJavaRenameProcessor().getSaveMode());
RefactoringStatus status = helper.perform(true, true);
fPerformChangeOperation = helper.getfPerformChangeOperation();
return status;
} catch (CoreException e) {
throw new InvocationTargetException(e);
}
}
/** Flag indication that no additional update is to be performed. */
public static final int NONE= 0;
/** Flag indicating that references are to be updated as well. */
public static final int UPDATE_REFERENCES= 1 << 0;
/**
* Flag indicating that Javadoc comments are to be updated as well.
* @deprecated use UPDATE_REFERENCES or UPDATE_TEXTUAL_MATCHES or both.
*/
public static final int UPDATE_JAVADOC_COMMENTS= 1 << 1;
/**
* Flag indicating that regular comments are to be updated as well.
* @deprecated use UPDATE_TEXTUAL_MATCHES
*/
public static final int UPDATE_REGULAR_COMMENTS= 1 << 2;
/**
* Flag indicating that string literals are to be updated as well.
* @deprecated use UPDATE_TEXTUAL_MATCHES
*/
public static final int UPDATE_STRING_LITERALS= 1 << 3;
/**
* Flag indicating that textual matches in comments and in string literals
* are to be updated as well.
* @since 3.0
*/
public static final int UPDATE_TEXTUAL_MATCHES= 1 << 6;
/** Flag indicating that the getter method is to be updated as well. */
public static final int UPDATE_GETTER_METHOD= 1 << 4;
/** Flag indicating that the setter method is to be updated as well. */
public static final int UPDATE_SETTER_METHOD= 1 << 5;
private RenameSupport(RenameJavaElementDescriptor descriptor) throws CoreException {
RefactoringStatus refactoringStatus= new RefactoringStatus();
fRefactoring= (RenameRefactoring) descriptor.createRefactoring(refactoringStatus);
if (refactoringStatus.hasFatalError()) {
fPreCheckStatus= refactoringStatus;
} else {
preCheck();
refactoringStatus.merge(fPreCheckStatus);
fPreCheckStatus= refactoringStatus;
}
}
/**
* Creates a new rename support for the given
* {@link RenameJavaElementDescriptor}.
*
* @param descriptor the {@link RenameJavaElementDescriptor} to create a
* {@link RenameSupport} for. The caller is responsible for
* configuring the descriptor before it is passed.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating the
* {@link RenameSupport}.
* @since 3.3
*/
public static RenameSupport create(RenameJavaElementDescriptor descriptor) throws CoreException {
return new RenameSupport(descriptor);
}
private RenameSupport(JavaRenameProcessor processor, String newName, int flags) {
fRefactoring= new RenameRefactoring(processor);
initialize(processor, newName, flags);
}
private JavaRenameProcessor getJavaRenameProcessor() {
return (JavaRenameProcessor) fRefactoring.getProcessor();
}
// /**
// * Creates a new rename support for the given {@link IJavaProject}.
// *
// * @param project the {@link IJavaProject} to be renamed.
// * @param newName the project's new name. <code>null</code> is a valid
// * value indicating that no new name is provided.
// * @param flags flags controlling additional parameters. Valid flags are
// * <code>UPDATE_REFERENCES</code> or <code>NONE</code>.
// * @return the {@link RenameSupport}.
// * @throws CoreException if an unexpected error occurred while creating
// * the {@link RenameSupport}.
// */
// public static RenameSupport create(IJavaProject project, String newName, int flags) throws CoreException {
// JavaRenameProcessor processor= new RenameJavaProjectProcessor(project);
// return new RenameSupport(processor, newName, flags);
// }
// /**
// * Creates a new rename support for the given {@link IPackageFragmentRoot}.
// *
// * @param root the {@link IPackageFragmentRoot} to be renamed.
// * @param newName the package fragment root's new name. <code>null</code> is
// * a valid value indicating that no new name is provided.
// * @return the {@link RenameSupport}.
// * @throws CoreException if an unexpected error occurred while creating
// * the {@link RenameSupport}.
// */
// public static RenameSupport create(IPackageFragmentRoot root, String newName) throws CoreException {
// JavaRenameProcessor processor= new RenameSourceFolderProcessor(root);
// return new RenameSupport(processor, newName, 0);
// }
/**
* Creates a new rename support for the given {@link IPackageFragment}.
*
* @param fragment the {@link IPackageFragment} to be renamed.
* @param newName the package fragment's new name. <code>null</code> is a
* valid value indicating that no new name is provided.
* @param flags flags controlling additional parameters. Valid flags are
* <code>UPDATE_REFERENCES</code>, and <code>UPDATE_TEXTUAL_MATCHES</code>,
* or their bitwise OR, or <code>NONE</code>.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating
* the {@link RenameSupport}.
*/
public static RenameSupport create(IPackageFragment fragment, String newName, int flags) throws CoreException {
JavaRenameProcessor processor= new RenamePackageProcessor(fragment);
return new RenameSupport(processor, newName, flags);
}
/**
* Creates a new rename support for the given {@link ICompilationUnit}.
*
* @param unit the {@link ICompilationUnit} to be renamed.
* @param newName the compilation unit's new name. <code>null</code> is a
* valid value indicating that no new name is provided.
* @param flags flags controlling additional parameters. Valid flags are
* <code>UPDATE_REFERENCES</code>, and <code>UPDATE_TEXTUAL_MATCHES</code>,
* or their bitwise OR, or <code>NONE</code>.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating
* the {@link RenameSupport}.
*/
public static RenameSupport create(ICompilationUnit unit, String newName, int flags) throws CoreException {
JavaRenameProcessor processor= new RenameCompilationUnitProcessor(unit);
return new RenameSupport(processor, newName, flags);
}
/**
* Creates a new rename support for the given {@link IType}.
*
* @param type the {@link IType} to be renamed.
* @param newName the type's new name. <code>null</code> is a valid value
* indicating that no new name is provided.
* @param flags flags controlling additional parameters. Valid flags are
* <code>UPDATE_REFERENCES</code>, and <code>UPDATE_TEXTUAL_MATCHES</code>,
* or their bitwise OR, or <code>NONE</code>.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating
* the {@link RenameSupport}.
*/
public static RenameSupport create(IType type, String newName, int flags) throws CoreException {
JavaRenameProcessor processor= new RenameTypeProcessor(type);
return new RenameSupport(processor, newName, flags);
}
/**
* Creates a new rename support for the given {@link IMethod}.
*
* @param method the {@link IMethod} to be renamed.
* @param newName the method's new name. <code>null</code> is a valid value
* indicating that no new name is provided.
* @param flags flags controlling additional parameters. Valid flags are
* <code>UPDATE_REFERENCES</code> or <code>NONE</code>.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating
* the {@link RenameSupport}.
*/
public static RenameSupport create(IMethod method, String newName, int flags) throws CoreException {
JavaRenameProcessor processor;
if (MethodChecks.isVirtual(method)) {
processor= new RenameVirtualMethodProcessor(method);
} else {
processor= new RenameNonVirtualMethodProcessor(method);
}
return new RenameSupport(processor, newName, flags);
}
/**
* Creates a new rename support for the given {@link IField}.
*
* @param field the {@link IField} to be renamed.
* @param newName the field's new name. <code>null</code> is a valid value
* indicating that no new name is provided.
* @param flags flags controlling additional parameters. Valid flags are
* <code>UPDATE_REFERENCES</code>, <code>UPDATE_TEXTUAL_MATCHES</code>,
* <code>UPDATE_GETTER_METHOD</code>, and <code>UPDATE_SETTER_METHOD</code>,
* or their bitwise OR, or <code>NONE</code>.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating
* the {@link RenameSupport}.
*/
public static RenameSupport create(IField field, String newName, int flags) throws CoreException {
if (JdtFlags.isEnum(field))
return new RenameSupport(new RenameEnumConstProcessor(field), newName, flags);
else {
final RenameFieldProcessor processor= new RenameFieldProcessor(field);
processor.setRenameGetter(updateGetterMethod(flags));
processor.setRenameSetter(updateSetterMethod(flags));
return new RenameSupport(processor, newName, flags);
}
}
/**
* Creates a new rename support for the given {@link ITypeParameter}.
*
* @param parameter the {@link ITypeParameter} to be renamed.
* @param newName the parameter's new name. <code>null</code> is a valid value
* indicating that no new name is provided.
* @param flags flags controlling additional parameters. Valid flags are
* <code>UPDATE_REFERENCES</code>, or <code>NONE</code>.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating
* the {@link RenameSupport}.
* @since 3.1
*/
public static RenameSupport create(ITypeParameter parameter, String newName, int flags) throws CoreException {
RenameTypeParameterProcessor processor= new RenameTypeParameterProcessor(parameter);
processor.setUpdateReferences(updateReferences(flags));
return new RenameSupport(processor, newName, flags);
}
/**
* Creates a new rename support for the given {@link ILocalVariable}.
*
* @param variable the {@link ILocalVariable} to be renamed.
* @param newName the variable's new name. <code>null</code> is a valid value
* indicating that no new name is provided.
* @param flags flags controlling additional parameters. Valid flags are
* <code>UPDATE_REFERENCES</code>, or <code>NONE</code>.
* @return the {@link RenameSupport}.
* @throws CoreException if an unexpected error occurred while creating
* the {@link RenameSupport}.
* @since 3.1
*/
public static RenameSupport create(ILocalVariable variable, String newName, int flags) throws CoreException {
RenameLocalVariableProcessor processor= new RenameLocalVariableProcessor(variable);
processor.setUpdateReferences(updateReferences(flags));
return new RenameSupport(processor, newName, flags);
}
private static void initialize(JavaRenameProcessor processor, String newName, int flags) {
setNewName(processor, newName);
if (processor instanceof IReferenceUpdating) {
IReferenceUpdating reference= (IReferenceUpdating) processor;
reference.setUpdateReferences(updateReferences(flags));
}
if (processor instanceof ITextUpdating) {
ITextUpdating text= (ITextUpdating) processor;
text.setUpdateTextualMatches(updateTextualMatches(flags));
}
}
private static void setNewName(INameUpdating refactoring, String newName) {
if (newName != null)
refactoring.setNewElementName(newName);
}
private static boolean updateReferences(int flags) {
return (flags & UPDATE_REFERENCES) != 0;
}
private static boolean updateTextualMatches(int flags) {
int TEXT_UPDATES= UPDATE_TEXTUAL_MATCHES | UPDATE_REGULAR_COMMENTS | UPDATE_STRING_LITERALS;
return (flags & TEXT_UPDATES) != 0;
}
private static boolean updateGetterMethod(int flags) {
return (flags & UPDATE_GETTER_METHOD) != 0;
}
private static boolean updateSetterMethod(int flags) {
return (flags & UPDATE_SETTER_METHOD) != 0;
}
private void ensureChecked() throws CoreException {
if (fPreCheckStatus == null) {
if (!fRefactoring.isApplicable()) {
fPreCheckStatus= RefactoringStatus.createFatalErrorStatus(JavaUIMessages.RenameSupport_not_available);
} else {
fPreCheckStatus= new RefactoringStatus();
}
}
}
// private void showInformation(Shell parent, RefactoringStatus status) {
// String message= status.getMessageMatchingSeverity(RefactoringStatus.FATAL);
// MessageDialog.openInformation(parent, JavaUIMessages.RenameSupport_dialog_title, message);
// }
//
// private RenameSelectionState createSelectionState() {
// RenameProcessor processor= (RenameProcessor) fRefactoring.getProcessor();
// Object[] elements= processor.getElements();
// RenameSelectionState state= elements.length == 1 ? new RenameSelectionState(elements[0]) : null;
// return state;
// }
//
// private void restoreSelectionState(RenameSelectionState state) throws CoreException {
// INameUpdating nameUpdating= (INameUpdating) fRefactoring.getAdapter(INameUpdating.class);
// if (nameUpdating != null && state != null) {
// Object newElement= nameUpdating.getNewElement();
// if (newElement != null) {
// state.restore(newElement);
// }
// }
// }
}