/*******************************************************************************
* Copyright (c) 2000, 2009 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.wst.jsdt.internal.ui.refactoring.actions;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.wst.jsdt.core.IField;
import org.eclipse.wst.jsdt.core.IFunction;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.core.IJavaScriptProject;
import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
import org.eclipse.wst.jsdt.core.ILocalVariable;
import org.eclipse.wst.jsdt.core.IPackageFragment;
import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
import org.eclipse.wst.jsdt.core.IType;
import org.eclipse.wst.jsdt.core.JavaScriptModelException;
import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringAvailabilityTester;
import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringExecutionStarter;
import org.eclipse.wst.jsdt.internal.corext.util.JavaModelUtil;
import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
import org.eclipse.wst.jsdt.internal.ui.actions.ActionUtil;
import org.eclipse.wst.jsdt.internal.ui.actions.SelectionConverter;
import org.eclipse.wst.jsdt.internal.ui.javaeditor.CompilationUnitEditor;
import org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaEditor;
import org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaTextSelection;
import org.eclipse.wst.jsdt.internal.ui.refactoring.RefactoringMessages;
import org.eclipse.wst.jsdt.internal.ui.refactoring.reorg.RenameLinkedMode;
import org.eclipse.wst.jsdt.internal.ui.util.ExceptionHandler;
import org.eclipse.wst.jsdt.ui.PreferenceConstants;
import org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction;
public class RenameJavaElementAction extends SelectionDispatchAction {
private JavaEditor fEditor;
public RenameJavaElementAction(IWorkbenchSite site) {
super(site);
}
public RenameJavaElementAction(JavaEditor editor) {
this(editor.getEditorSite());
fEditor= editor;
setEnabled(SelectionConverter.canOperateOn(fEditor));
}
//---- Structured selection ------------------------------------------------
public void selectionChanged(IStructuredSelection selection) {
try {
if (selection.size() == 1) {
setEnabled(canEnable(selection));
return;
}
} catch (JavaScriptModelException e) {
// http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253
if (JavaModelUtil.isExceptionToBeLogged(e))
JavaScriptPlugin.log(e);
} catch (CoreException e) {
JavaScriptPlugin.log(e);
}
setEnabled(false);
}
private static boolean canEnable(IStructuredSelection selection) throws CoreException {
IJavaScriptElement element= getJavaElement(selection);
if (element == null)
return false;
return isRenameAvailable(element);
}
private static IJavaScriptElement getJavaElement(IStructuredSelection selection) {
if (selection.size() != 1)
return null;
Object first= selection.getFirstElement();
if (! (first instanceof IJavaScriptElement))
return null;
return (IJavaScriptElement)first;
}
public void run(IStructuredSelection selection) {
IJavaScriptElement element= getJavaElement(selection);
if (element == null)
return;
try {
run(element, false);
} catch (CoreException e){
ExceptionHandler.handle(e, RefactoringMessages.RenameJavaElementAction_name, RefactoringMessages.RenameJavaElementAction_exception);
}
}
//---- text selection ------------------------------------------------------------
public void selectionChanged(ITextSelection selection) {
if (selection instanceof JavaTextSelection) {
try {
IJavaScriptElement[] elements= ((JavaTextSelection)selection).resolveElementAtOffset();
if (elements.length == 1) {
setEnabled(isRenameAvailable(elements[0]));
} else {
setEnabled(false);
}
} catch (CoreException e) {
setEnabled(false);
}
} else {
setEnabled(true);
}
}
public void run(ITextSelection selection) {
RenameLinkedMode activeLinkedMode= RenameLinkedMode.getActiveLinkedMode();
if (activeLinkedMode != null) {
if (activeLinkedMode.isCaretInLinkedPosition()) {
activeLinkedMode.startFullDialog();
return;
} else {
activeLinkedMode.cancel();
}
}
try {
IJavaScriptElement element= getJavaElementFromEditor();
if (element != null && isRenameAvailable(element)) {
IPreferenceStore store= JavaScriptPlugin.getDefault().getPreferenceStore();
run(element, store.getBoolean(PreferenceConstants.REFACTOR_LIGHTWEIGHT));
return;
}
} catch (CoreException e) {
ExceptionHandler.handle(e, RefactoringMessages.RenameJavaElementAction_name, RefactoringMessages.RenameJavaElementAction_exception);
}
MessageDialog.openInformation(getShell(), RefactoringMessages.RenameJavaElementAction_name, RefactoringMessages.RenameJavaElementAction_not_available);
}
public boolean canRunInEditor() {
if (RenameLinkedMode.getActiveLinkedMode() != null)
return true;
try {
IJavaScriptElement element= getJavaElementFromEditor();
if (element == null)
return false;
return isRenameAvailable(element);
} catch (JavaScriptModelException e) {
if (JavaModelUtil.isExceptionToBeLogged(e))
JavaScriptPlugin.log(e);
} catch (CoreException e) {
JavaScriptPlugin.log(e);
}
return false;
}
private IJavaScriptElement getJavaElementFromEditor() throws JavaScriptModelException {
IJavaScriptElement[] elements= SelectionConverter.codeResolve(fEditor);
if (elements == null || elements.length != 1)
return null;
return elements[0];
}
//---- helper methods -------------------------------------------------------------------
private void run(IJavaScriptElement element, boolean lightweight) throws CoreException {
// Work around for http://dev.eclipse.org/bugs/show_bug.cgi?id=19104
if (! ActionUtil.isEditable(fEditor, getShell(), element))
return;
//XXX workaround bug 31998
if (ActionUtil.mustDisableJavaModelAction(getShell(), element))
return;
if (lightweight && fEditor instanceof CompilationUnitEditor && ! (element instanceof IPackageFragment)) {
new RenameLinkedMode(element, (CompilationUnitEditor) fEditor).start();
} else {
RefactoringExecutionStarter.startRenameRefactoring(element, getShell());
}
}
private static boolean isRenameAvailable(IJavaScriptElement element) throws CoreException {
switch (element.getElementType()) {
case IJavaScriptElement.JAVASCRIPT_PROJECT:
return RefactoringAvailabilityTester.isRenameAvailable((IJavaScriptProject) element);
case IJavaScriptElement.PACKAGE_FRAGMENT_ROOT:
return RefactoringAvailabilityTester.isRenameAvailable((IPackageFragmentRoot) element);
case IJavaScriptElement.PACKAGE_FRAGMENT:
return RefactoringAvailabilityTester.isRenameAvailable((IPackageFragment) element);
case IJavaScriptElement.JAVASCRIPT_UNIT:
return RefactoringAvailabilityTester.isRenameAvailable((IJavaScriptUnit) element);
case IJavaScriptElement.TYPE:
return RefactoringAvailabilityTester.isRenameAvailable((IType) element);
case IJavaScriptElement.METHOD:
final IFunction method= (IFunction) element;
if (method.isConstructor())
return RefactoringAvailabilityTester.isRenameAvailable(method.getDeclaringType());
else
return RefactoringAvailabilityTester.isRenameAvailable(method);
case IJavaScriptElement.FIELD:
final IField field= (IField) element;
return RefactoringAvailabilityTester.isRenameFieldAvailable(field);
case IJavaScriptElement.LOCAL_VARIABLE:
return RefactoringAvailabilityTester.isRenameAvailable((ILocalVariable) element);
}
return false;
}
}