/*******************************************************************************
* Copyright (c) 2000, 2008 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
* Sebastian Davids - Fixed bug 25898
*******************************************************************************/
package org.eclipse.wst.jsdt.ui.actions;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.PerformChangeOperation;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.RefactoringStatusEntry;
import org.eclipse.ltk.ui.refactoring.RefactoringUI;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
import org.eclipse.wst.jsdt.core.ISourceRange;
import org.eclipse.wst.jsdt.internal.corext.refactoring.base.JavaStatusContext;
import org.eclipse.wst.jsdt.internal.corext.refactoring.surround.ISurroundWithTryCatchQuery;
import org.eclipse.wst.jsdt.internal.corext.refactoring.surround.SurroundWithTryCatchRefactoring;
import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
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.actions.WorkbenchRunnableAdapter;
import org.eclipse.wst.jsdt.internal.ui.javaeditor.CompilationUnitEditor;
import org.eclipse.wst.jsdt.internal.ui.refactoring.RefactoringMessages;
import org.eclipse.wst.jsdt.internal.ui.util.BusyIndicatorRunnableContext;
import org.eclipse.wst.jsdt.internal.ui.util.ElementValidator;
import org.eclipse.wst.jsdt.internal.ui.util.ExceptionHandler;
/**
* Action to surround a set of statements with a try/catch block.
*
* <p>
* This class may be instantiated; it is not intended to be subclassed.
* </p>
*
*
* Provisional API: This class/interface is part of an interim API that is still under development and expected to
* change significantly before reaching stability. It is being made available at this early stage to solicit feedback
* from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken
* (repeatedly) as the API evolves.
*/
public class SurroundWithTryCatchAction extends SelectionDispatchAction {
private CompilationUnitEditor fEditor;
private static class Query implements ISurroundWithTryCatchQuery {
private Shell fParent;
public Query(Shell shell) {
fParent= shell;
}
public boolean catchRuntimeException() {
MessageDialog dialog = new MessageDialog(
fParent, getDialogTitle(), null, // accept the default window icon
RefactoringMessages.SurroundWithTryCatchAction_no_exceptions,
MessageDialog.QUESTION,
new String[] {IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL},
1) {
// Work around for http://dev.eclipse.org/bugs/show_bug.cgi?id=18303
protected void createButtonsForButtonBar(Composite parent) {
super.createButtonsForButtonBar(parent);
Button button= getButton(1);
if (button != null)
button.setFocus();
}
};
return dialog.open() == 0; // yes selected
}
}
/**
* Note: This constructor is for internal use only. Clients should not call this constructor.
* @param editor the compilation unit editor
*/
public SurroundWithTryCatchAction(CompilationUnitEditor editor) {
super(editor.getEditorSite());
setText(RefactoringMessages.SurroundWithTryCatchAction_label);
fEditor= editor;
setEnabled((fEditor != null && SelectionConverter.getInputAsCompilationUnit(fEditor) != null));
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.SURROUND_WITH_TRY_CATCH_ACTION);
}
public void run(ITextSelection selection) {
if (!ActionUtil.isEditable(fEditor))
return;
IJavaScriptUnit cu= SelectionConverter.getInputAsCompilationUnit(fEditor);
if (cu == null || !ElementValidator.checkValidateEdit(cu, getShell(), getDialogTitle()))
return;
SurroundWithTryCatchRefactoring refactoring= SurroundWithTryCatchRefactoring.create(cu, selection, new Query(getShell()));
if (refactoring == null)
return;
try {
RefactoringStatus status= refactoring.checkInitialConditions(new NullProgressMonitor());
if (status.hasFatalError()) {
RefactoringStatusEntry entry= status.getEntryMatchingSeverity(RefactoringStatus.FATAL);
MessageDialog.openInformation(getShell(), getDialogTitle(), entry.getMessage());
if (entry.getContext() instanceof JavaStatusContext && fEditor != null) {
JavaStatusContext context= (JavaStatusContext)entry.getContext();
ISourceRange range= context.getSourceRange();
fEditor.setHighlightRange(range.getOffset(), range.getLength(), true);
}
return;
}
if (refactoring.stopExecution())
return;
Change change= refactoring.createChange(new NullProgressMonitor());
change.initializeValidationData(new NullProgressMonitor());
PerformChangeOperation op= RefactoringUI.createUIAwareChangeOperation(change);
// must be fork == false since file buffers can't be manipulated in a different thread.
WorkbenchRunnableAdapter adapter= new WorkbenchRunnableAdapter(op);
PlatformUI.getWorkbench().getProgressService().runInUI(
new BusyIndicatorRunnableContext(), adapter, adapter.getSchedulingRule());
} catch (CoreException e) {
ExceptionHandler.handle(e, getDialogTitle(), RefactoringMessages.SurroundWithTryCatchAction_exception);
} catch (InvocationTargetException e) {
ExceptionHandler.handle(e, getDialogTitle(), RefactoringMessages.SurroundWithTryCatchAction_exception);
} catch (InterruptedException e) {
// not cancelable
}
}
public void selectionChanged(ITextSelection selection) {
setEnabled(selection.getLength() > 0 && (fEditor != null && SelectionConverter.getInputAsCompilationUnit(fEditor) != null));
}
private static String getDialogTitle() {
return RefactoringMessages.SurroundWithTryCatchAction_dialog_title;
}
}