/*******************************************************************************
* Copyright (c) 2004 Lukas Larsson 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:
* Lukas Larsson
*******************************************************************************/
package org.erlide.ui.wizards;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
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.Path;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWizard;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
import org.erlide.engine.util.CommonUtils;
/**
* This is a sample new wizard. Its role is to create a new file resource in the
* provided container. If the container resource (a folder or a project) is
* selected in the workspace when the wizard is opened, it will accept it as the
* target container. The wizard creates one file with the extension "erl". If a
* sample multi-page editor (also available as a template) is registered for the
* same extension, it will be able to open it.
*/
public class ErlangFileWizard extends Wizard implements INewWizard {
private ErlangFileWizardPage fPage;
private ISelection fSelection;
/**
* Constructor for ErlangFileWizard.
*/
public ErlangFileWizard() {
super();
setNeedsProgressMonitor(true);
setWindowTitle("New Erlang module");
}
/**
* Adding the page to the wizard.
*/
@Override
public void addPages() {
fPage = new ErlangFileWizardPage(fSelection);
addPage(fPage);
}
/**
* This method is called when 'Finish' button is pressed in the wizard. We
* will create an operation and run it using wizard as execution context.
*/
@Override
public boolean performFinish() {
final String containerName = fPage.getContainerName();
final String fileName = fPage.getFileName();
final String skeleton = fPage.getSkeleton();
final IRunnableWithProgress op = new IRunnableWithProgress() {
@Override
public void run(final IProgressMonitor monitor)
throws InvocationTargetException {
try {
doFinish(containerName, fileName, skeleton, monitor);
} catch (final CoreException e) {
throw new InvocationTargetException(e);
} finally {
monitor.done();
}
}
};
try {
getContainer().run(true, false, op);
} catch (final InterruptedException e) {
return false;
} catch (final InvocationTargetException e) {
final Throwable realException = e.getTargetException();
MessageDialog.openError(getShell(), "Error", realException.getMessage());
return false;
}
return true;
}
/**
* The worker method. It will find the container, create the file if missing
* or just replace its contents, and open the editor on the newly created
* file.
*/
public void doFinish(final String containerName, final String fileName,
final String skeleton, final IProgressMonitor monitor) throws CoreException {
// ErlLogger.debug("Generating a file with skeleton: "+skeleton);
// create a sample file
monitor.beginTask("Creating " + fileName, 2);
final IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
final IResource resource = root.findMember(new Path(containerName));
if (!resource.exists() || !(resource instanceof IContainer)) {
throwCoreException("Container \"" + containerName + "\" does not exist.");
}
final IContainer container = (IContainer) resource;
IPath path = new Path(fileName);
if (!CommonUtils.isErlangFileContentFileName(fileName)) {
path = path.addFileExtension("erl");
}
final IFile file = container.getFile(path);
try {
final InputStream stream = openContentStream(skeleton);
if (file.exists()) {
file.setContents(stream, true, true, monitor);
} else {
file.create(stream, true, monitor);
}
stream.close();
} catch (final IOException e) {
}
monitor.worked(1);
// ErlangCore.getModelManager().create(file, null);
monitor.setTaskName("Opening file for editing...");
getShell().getDisplay().asyncExec(new Runnable() {
@Override
public void run() {
final IWorkbenchPage page = PlatformUI.getWorkbench()
.getActiveWorkbenchWindow().getActivePage();
try {
IDE.openEditor(page, file, true);
} catch (final PartInitException e) {
}
}
});
monitor.worked(1);
}
/**
* We will initialize file contents with a sample text.
*/
private InputStream openContentStream(final String skeleton) {
return new ByteArrayInputStream(skeleton.getBytes());
}
private void throwCoreException(final String message) throws CoreException {
final IStatus status = new Status(IStatus.ERROR, "Erlang_Wizard", IStatus.OK,
message, null);
throw new CoreException(status);
}
/**
* We will accept the selection in the workbench to see if we can initialize
* from it.
*
* @see IWorkbenchWizard#init(IWorkbench, IStructuredSelection)
*/
@Override
public void init(final IWorkbench workbench, final IStructuredSelection selection) {
fSelection = selection;
}
}