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/*******************************************************************************
* Copyright (c) 2011, 2012 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.core.internal.callbacks;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.tcf.protocol.IChannel;
import org.eclipse.tcf.protocol.IToken;
import org.eclipse.tcf.services.IFileSystem;
import org.eclipse.tcf.services.IFileSystem.DirEntry;
import org.eclipse.tcf.services.IFileSystem.DoneClose;
import org.eclipse.tcf.services.IFileSystem.DoneReadDir;
import org.eclipse.tcf.services.IFileSystem.FileSystemException;
import org.eclipse.tcf.te.runtime.interfaces.callback.ICallback;
import org.eclipse.tcf.te.tcf.filesystem.core.activator.CorePlugin;
import org.eclipse.tcf.te.tcf.filesystem.core.model.FSTreeNode;
/**
* The callback handler that handles the event when a directory is read.
*/
public class QueryDoneReadDir extends CallbackBase implements DoneReadDir {
// The tcf channel.
IChannel channel;
// The file system service.
IFileSystem service;
// The file handle of the parent directory.
IFileSystem.IFileHandle handle;
// The parent node being queried.
FSTreeNode parentNode;
// The callback object.
ICallback callback;
/**
* Create an instance with parameters to initialize the fields.
*
* @param channel The tcf channel.
* @param service The file system service.
* @param handle The directory's file handle.
* @param parentNode The parent directory.
*/
public QueryDoneReadDir(ICallback callback, IChannel channel, IFileSystem service, IFileSystem.IFileHandle handle, FSTreeNode parentNode) {
this.callback = callback;
this.channel = channel;
this.service = service;
this.handle = handle;
this.parentNode = parentNode;
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.services.IFileSystem.DoneReadDir#doneReadDir(org.eclipse.tcf.protocol.IToken, org.eclipse.tcf.services.IFileSystem.FileSystemException, org.eclipse.tcf.services.IFileSystem.DirEntry[], boolean)
*/
@Override
public void doneReadDir(IToken token, FileSystemException error, DirEntry[] entries, boolean eof) {
// Process the returned data
if (error == null) {
if (entries != null && entries.length > 0) {
for (DirEntry entry : entries) {
FSTreeNode node = new FSTreeNode(parentNode, entry, false);
parentNode.addChild(node);
}
}
if (eof) {
// Close the handle and channel if EOF is signaled or an error occurred.
service.close(handle, new DoneClose() {
@Override
public void doneClose(IToken token, FileSystemException error) {
if(callback != null) {
IStatus status = error == null ? Status.OK_STATUS : new Status(IStatus.ERROR, CorePlugin.getUniqueIdentifier(), error.getMessage(), error);
callback.done(this, status);
}
}});
}
else {
// And invoke ourself again
service.readdir(handle, new QueryDoneReadDir(callback, channel, service, handle, parentNode));
}
} else if(callback != null) {
// Close the handle and channel if EOF is signaled or an error occurred.
service.close(handle, new DoneClose() {
@Override
public void doneClose(IToken token, FileSystemException error) {
IStatus status = error == null ? Status.OK_STATUS : new Status(IStatus.ERROR, CorePlugin.getUniqueIdentifier(), getErrorMessage(error), error);
callback.done(this, status);
}
});
}
}
}
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