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/*******************************************************************************
* Copyright (c) 2011, 2014 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.ui.terminals.streams;
import java.io.InputStream;
import java.io.OutputStream;
import org.eclipse.core.runtime.Assert;
import org.eclipse.tcf.te.core.terminals.interfaces.ITerminalServiceOutputStreamMonitorListener;
import org.eclipse.tm.internal.terminal.provisional.api.ITerminalControl;
import org.eclipse.tm.internal.terminal.provisional.api.provider.TerminalConnectorImpl;
import org.eclipse.ui.services.IDisposable;
/**
* Streams connector implementation.
*/
@SuppressWarnings("restriction")
public abstract class AbstractStreamsConnector extends TerminalConnectorImpl {
// Reference to the stdin monitor
private InputStreamMonitor stdInMonitor;
// Reference to the stdout monitor
private OutputStreamMonitor stdOutMonitor;
// Reference to the stderr monitor
private OutputStreamMonitor stdErrMonitor;
// Reference to the list of stdout output listeners
private ITerminalServiceOutputStreamMonitorListener[] stdoutListeners = null;
// Reference to the list of stderr output listeners
private ITerminalServiceOutputStreamMonitorListener[] stderrListeners = null;
/**
* Set the list of stdout listeners.
*
* @param listeners The list of stdout listeners or <code>null</code>.
*/
protected final void setStdoutListeners(ITerminalServiceOutputStreamMonitorListener[] listeners) {
this.stdoutListeners = listeners;
}
/**
* Set the list of stderr listeners.
*
* @param listeners The list of stderr listeners or <code>null</code>.
*/
protected final void setStderrListeners(ITerminalServiceOutputStreamMonitorListener[] listeners) {
this.stderrListeners = listeners;
}
/**
* Connect the given streams. The streams connector will wrap each stream
* with a corresponding terminal stream monitor.
*
* @param terminalControl The terminal control. Must not be <code>null</code>.
* @param stdin The stdin stream or <code>null</code>.
* @param stdout The stdout stream or <code>null</code>.
* @param stderr The stderr stream or <code>null</code>.
* @param localEcho Local echo on or off.
* @param lineSeparator The line separator used by the stream.
*/
protected void connectStreams(ITerminalControl terminalControl, OutputStream stdin, InputStream stdout, InputStream stderr, boolean localEcho, String lineSeparator) {
Assert.isNotNull(terminalControl);
// Create the input stream monitor
if (stdin != null) {
stdInMonitor = createStdInMonitor(terminalControl, stdin, localEcho, lineSeparator);
// Register the connector if it implements IDisposable and stdout/stderr are not monitored
if (stdout == null && stderr == null && this instanceof IDisposable) stdInMonitor.addDisposable((IDisposable)this);
// Start the monitoring
stdInMonitor.startMonitoring();
}
// Create the output stream monitor
if (stdout != null) {
stdOutMonitor = createStdOutMonitor(terminalControl, stdout, lineSeparator);
// Register the connector if it implements IDisposable
if (this instanceof IDisposable) stdOutMonitor.addDisposable((IDisposable)this);
// Register the listeners
if (stdoutListeners != null) {
for (ITerminalServiceOutputStreamMonitorListener l : stdoutListeners) {
stdOutMonitor.addListener(l);
}
}
// Start the monitoring
stdOutMonitor.startMonitoring();
}
// Create the error stream monitor
if (stderr != null) {
stdErrMonitor = createStdErrMonitor(terminalControl, stderr, lineSeparator);
// Register the connector if it implements IDisposable and stdout is not monitored
if (stdout == null && this instanceof IDisposable) stdErrMonitor.addDisposable((IDisposable)this);
// Register the listeners
if (stderrListeners != null) {
for (ITerminalServiceOutputStreamMonitorListener l : stderrListeners) {
stdErrMonitor.addListener(l);
}
}
// Start the monitoring
stdErrMonitor.startMonitoring();
}
}
/**
* Creates an stdin monitor for the given terminal control and stdin stream.
* Subclasses may override to create a specialized stream monitor.
*
* @param terminalControl The terminal control. Must not be <code>null</code>.
* @param stdin The stdin stream or <code>null</code>.
* @param localEcho Local echo on or off.
* @param lineSeparator The line separator used by the stream.
*
* @return input stream monitor
*/
protected InputStreamMonitor createStdInMonitor(ITerminalControl terminalControl, OutputStream stdin, boolean localEcho, String lineSeparator) {
return new InputStreamMonitor(terminalControl, stdin, localEcho, lineSeparator);
}
/**
* Creates an stdout monitor for the given terminal control and stdout stream.
* Subclasses may override to create a specialized stream monitor.
*
* @param terminalControl The terminal control. Must not be <code>null</code>.
* @param stdout The stdout stream or <code>null</code>.
* @param lineSeparator The line separator used by the stream.
*
* @return output stream monitor
*/
protected OutputStreamMonitor createStdOutMonitor(ITerminalControl terminalControl, InputStream stdout, String lineSeparator) {
return new OutputStreamMonitor(terminalControl, stdout, lineSeparator);
}
/**
* Creates an stderr monitor for the given terminal control and stderr stream.
* Subclasses may override to create a specialized stream monitor.
*
* @param terminalControl The terminal control. Must not be <code>null</code>.
* @param stderr The stderr stream or <code>null</code>.
* @param lineSeparator The line separator used by the stream.
*
* @return output stream monitor
*/
protected OutputStreamMonitor createStdErrMonitor(ITerminalControl terminalControl, InputStream stderr, String lineSeparator) {
return new OutputStreamMonitor(terminalControl, stderr, lineSeparator);
}
/* (non-Javadoc)
* @see org.eclipse.tcf.internal.terminal.provisional.api.provider.TerminalConnectorImpl#doDisconnect()
*/
@Override
protected void doDisconnect() {
// Dispose the streams
if (stdInMonitor != null) { stdInMonitor.dispose(); stdInMonitor = null; }
if (stdOutMonitor != null) { stdOutMonitor.dispose(); stdOutMonitor = null; }
if (stdErrMonitor != null) { stdErrMonitor.dispose(); stdErrMonitor = null; }
super.doDisconnect();
}
/* (non-Javadoc)
* @see org.eclipse.tcf.internal.terminal.provisional.api.provider.TerminalConnectorImpl#getTerminalToRemoteStream()
*/
@Override
public OutputStream getTerminalToRemoteStream() {
return stdInMonitor;
}
}
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