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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.filesystem.internal.operations;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SafeRunner;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.tcf.protocol.IChannel;
import org.eclipse.tcf.protocol.IToken;
import org.eclipse.tcf.services.IFileSystem;
import org.eclipse.tcf.services.IFileSystem.DoneRemove;
import org.eclipse.tcf.services.IFileSystem.FileSystemException;
import org.eclipse.tcf.te.tcf.core.Tcf;
import org.eclipse.tcf.te.tcf.filesystem.activator.UIPlugin;
import org.eclipse.tcf.te.tcf.filesystem.internal.ImageConsts;
import org.eclipse.tcf.te.tcf.filesystem.internal.exceptions.TCFException;
import org.eclipse.tcf.te.tcf.filesystem.internal.exceptions.TCFFileSystemException;
import org.eclipse.tcf.te.tcf.filesystem.internal.utils.StateManager;
import org.eclipse.tcf.te.tcf.filesystem.model.FSTreeNode;
import org.eclipse.tcf.te.tcf.filesystem.nls.Messages;
import org.eclipse.ui.PlatformUI;
/**
* FSDelete deletes the selected FSTreeNode list.
*/
public class FSDelete extends FSUIOperation {
//The nodes to be deleted.
List<FSTreeNode> nodes;
/**
* Create a delete operation using the specified nodes.
*
* @param nodes The nodes to be deleted.
*/
public FSDelete(List<FSTreeNode> nodes) {
super(Messages.FSDelete_DeleteFileFolderTitle);
this.nodes = getTopNodes(nodes);
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.tcf.filesystem.internal.operations.FSOperation#run(org.eclipse.core.runtime.IProgressMonitor)
*/
@Override
public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
FSTreeNode head = nodes.get(0);
IChannel channel = null;
try {
channel = openChannel(head.peerNode.getPeer());
if (channel != null) {
IFileSystem service = getBlockingFileSystem(channel);
if (service != null) {
monitor.beginTask(Messages.FSDelete_PrepareToDelete, IProgressMonitor.UNKNOWN);
monitor.worked(1);
int count = count(service, nodes);
monitor.beginTask(Messages.FSDelete_Deleting, count);
for (FSTreeNode node : nodes) {
remove(monitor, node, service);
}
}
else {
String message = NLS.bind(Messages.FSOperation_NoFileSystemError, head.peerNode.getPeerId());
throw new TCFFileSystemException(message);
}
}
}
catch (TCFException e) {
throw new InvocationTargetException(e, e.getLocalizedMessage());
}
finally {
if (channel != null) Tcf.getChannelManager().closeChannel(channel);
monitor.done();
}
}
/**
* Delete the file/folder node using the file system service.
*
* @param monitor The monitor to report the progress.
* @param node The file/folder node to be deleted.
* @param service The file system service.
* @throws TCFFileSystemException The exception thrown during deleting.
* @throws InterruptedException Thrown when the operation is canceled.
*/
void remove(IProgressMonitor monitor, FSTreeNode node, IFileSystem service) throws TCFFileSystemException, InterruptedException {
if (node.isFile()) {
removeFile(monitor, node, service);
}
else if (node.isDirectory()) {
removeFolder(monitor, node, service);
}
}
/**
* Delete the folder node and its children using the file system service.
*
* @param monitor The monitor to report the progress.
* @param node The folder node to be deleted.
* @param service The file system service.
* @throws TCFFileSystemException The exception thrown during deleting.
* @throws InterruptedException Thrown when the operation is canceled.
*/
private void removeFolder(IProgressMonitor monitor, final FSTreeNode node, IFileSystem service) throws TCFFileSystemException, InterruptedException {
List<FSTreeNode> children = getChildren(node, service);
if (!children.isEmpty()) {
for (FSTreeNode child : children) {
// Delete each child node.
remove(monitor, child, service);
}
}
if (monitor.isCanceled()) throw new InterruptedException();
monitor.subTask(NLS.bind(Messages.FSDelete_RemovingFileFolder, node.name));
removeFolder(service, node);
monitor.worked(1);
}
/**
* Delete the folder node using the file system service.
*
* @param monitor The monitor to report the progress.
* @param node The folder node to be deleted.
* @param service The file system service.
* @throws TCFFileSystemException The exception thrown during deleting.
* @throws InterruptedException Thrown when the operation is canceled.
*/
private void removeFolder(IFileSystem service, final FSTreeNode node) throws TCFFileSystemException {
final TCFFileSystemException[] errors = new TCFFileSystemException[1];
String path = node.getLocation(true);
service.rmdir(path, new DoneRemove() {
@Override
public void doneRemove(IToken token, FileSystemException error) {
if (error == null) {
cleanUpFolder(node);
}
else {
String message = NLS.bind(Messages.FSDelete_CannotRemoveFolder, node.name, error);
errors[0] = new TCFFileSystemException(message, error);
}
}
});
if (errors[0] != null) {
throw errors[0];
}
}
/**
* Delete the file node using the file system service.
*
* @param monitor The monitor to report the progress.
* @param node The file node to be deleted.
* @param service The file system service.
* @throws TCFFileSystemException The exception thrown during deleting.
* @throws InterruptedException Thrown when the operation is canceled.
*/
private void removeFile(IProgressMonitor monitor, final FSTreeNode node, IFileSystem service) throws TCFFileSystemException, InterruptedException {
if (monitor.isCanceled()) throw new InterruptedException();
monitor.subTask(NLS.bind(Messages.FSDelete_RemovingFileFolder, node.name));
// If the file is read only on windows or not writable on unix, then make it deletable.
if (node.isWindowsNode() && node.isReadOnly() || !node.isWindowsNode() && !node.isWritable()) {
if (!yes2All) {
int result = confirmDelete(node);
if (result == 1) {
yes2All = true;
}
else if (result == 2) {
monitor.worked(1);
return;
}
else if (result == 3) {
// Cancel the whole operation
monitor.setCanceled(true);
throw new InterruptedException();
}
}
final FSTreeNode clone = (FSTreeNode) node.clone();
if (node.isWindowsNode()) {
clone.setReadOnly(false);
}
else {
clone.setWritable(true);
}
// Make the file writable.
SafeRunner.run(new SafeRunnable() {
@Override
public void handleException(Throwable e) {
// Ignore exception
}
@Override
public void run() throws Exception {
StateManager.getInstance().setFileAttrs(node, clone.attr);
}
});
}
removeFile(node, service);
monitor.worked(1);
}
/**
* Confirm deleting the read only file.
*
* @param node The read only file node.
* @return The confirming result, 0-yes, 1-yes to all, 2-no, 3-cancel.
*/
private int confirmDelete(final FSTreeNode node) {
final int[] results = new int[1];
Display display = PlatformUI.getWorkbench().getDisplay();
display.syncExec(new Runnable() {
@Override
public void run() {
Shell parent = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
String title = Messages.FSDelete_ConfirmDelete;
String message = NLS.bind(Messages.FSDelete_ConfirmMessage, node.name);
final Image titleImage = UIPlugin.getImage(ImageConsts.DELETE_READONLY_CONFIRM);
MessageDialog qDialog = new MessageDialog(parent, title, null, message, MessageDialog.QUESTION, new String[] { Messages.FSDelete_ButtonYes, Messages.FSDelete_ButtonYes2All, Messages.FSDelete_ButtonNo, Messages.FSDelete_ButtonCancel }, 0) {
@Override
public Image getQuestionImage() {
return titleImage;
}
};
results[0] = qDialog.open();
}
});
return results[0];
}
}
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