package org.erlide.ui.editors.scratchpad;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.nio.charset.Charset;
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.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.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
public class NewErlangScratchPadWizard extends Wizard implements INewWizard {
private IStructuredSelection fSelection;
private NewErlangScratchPadWizardPage fPage;
@Override
public void addPages() {
fPage = new NewErlangScratchPadWizardPage(fSelection);
addPage(fPage);
}
// FIXME copied a lot from ErlangFileWizard, we should refactor to common
// base class...
@Override
public boolean performFinish() {
final IPath containerFullPath = fPage.getContainerFullPath();
final String fileName = fPage.getFileName();
final IRunnableWithProgress op = new IRunnableWithProgress() {
@Override
public void run(final IProgressMonitor monitor)
throws InvocationTargetException {
try {
doFinish(containerFullPath, fileName, 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 IPath containerFullPath, final String fileName,
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(containerFullPath);
if (!resource.exists() || !(resource instanceof IContainer)) {
throwCoreException("Container \"" + containerFullPath + "\" does not exist.");
}
final IContainer container = (IContainer) resource;
IPath path = new Path(fileName);
final String ext = path.getFileExtension();
if (!"erlScratchPad".equals(ext)) {
path = path.addFileExtension("erlScratchPad");
}
final IFile file = container.getFile(path);
try {
final InputStream stream = openContentStream();
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 s = "%% This is a scratch pad for running erlang code\n%% Everything is saved";
return new ByteArrayInputStream(s.getBytes(Charset.forName("UTF8")));
}
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);
}
@Override
public void init(final IWorkbench workbench, final IStructuredSelection selection) {
fSelection = selection;
setNeedsProgressMonitor(true);
}
}