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/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.views.console;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.ui.console.IConsoleLineTracker;
import org.eclipse.debug.ui.console.IConsoleLineTrackerExtension;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.ui.console.IConsoleConstants;
import org.eclipse.ui.console.IPatternMatchListener;
import org.eclipse.ui.console.PatternMatchEvent;
import org.eclipse.ui.console.TextConsole;
/**
* Tracks text appended to the console and notifies listeners in terms of whole
* lines.
*/
public class ConsoleLineNotifier implements IPatternMatchListener, IPropertyChangeListener {
/**
* Console listeners
*/
private List<IConsoleLineTracker> fListeners = new ArrayList<>(2);
/**
* The console this notifier is tracking
*/
private ProcessConsole fConsole = null;
@Override
public void connect(TextConsole console) {
if (console instanceof ProcessConsole) {
fConsole = (ProcessConsole)console;
IConsoleLineTracker[] lineTrackers = DebugUIPlugin.getDefault().getProcessConsoleManager().getLineTrackers(fConsole.getProcess());
for (int i = 0; i < lineTrackers.length; i++) {
lineTrackers[i].init(fConsole);
addConsoleListener(lineTrackers[i]);
}
fConsole.addPropertyChangeListener(this);
}
}
@Override
public synchronized void disconnect() {
try {
IDocument document = fConsole.getDocument();
if (document != null) {
int lastLine = document.getNumberOfLines() - 1;
if (document.getLineDelimiter(lastLine) == null) {
IRegion lineInformation = document.getLineInformation(lastLine);
lineAppended(lineInformation);
}
}
} catch (BadLocationException e) {
}
}
/**
* Notification the console's streams have been closed
*/
public synchronized void consoleClosed() {
int size = fListeners.size();
for (int i = 0; i < size; i++) {
IConsoleLineTracker tracker = fListeners.get(i);
if (tracker instanceof IConsoleLineTrackerExtension) {
((IConsoleLineTrackerExtension) tracker).consoleClosed();
}
tracker.dispose();
}
fConsole = null;
fListeners = null;
}
/**
* Adds the given listener to the list of listeners notified when a line of
* text is appended to the console.
*
* @param listener the listener to add
*/
public void addConsoleListener(IConsoleLineTracker listener) {
if (!fListeners.contains(listener)) {
fListeners.add(listener);
}
}
@Override
public void matchFound(PatternMatchEvent event) {
try {
IDocument document = fConsole.getDocument();
int lineOfOffset = document.getLineOfOffset(event.getOffset());
String delimiter = document.getLineDelimiter(lineOfOffset);
int strip = delimiter==null ? 0 : delimiter.length();
Region region = new Region(event.getOffset(), event.getLength()-strip);
lineAppended(region);
} catch (BadLocationException e) {}
}
public void lineAppended(IRegion region) {
int size = fListeners.size();
for (int i=0; i<size; i++) {
IConsoleLineTracker tracker = fListeners.get(i);
tracker.lineAppended(region);
}
}
@Override
public void propertyChange(PropertyChangeEvent event) {
if(event.getProperty().equals(IConsoleConstants.P_CONSOLE_OUTPUT_COMPLETE)) {
fConsole.removePropertyChangeListener(this);
consoleClosed();
}
}
@Override
public String getPattern() {
return ".*\\r(\\n?)|.*\\n"; //$NON-NLS-1$
}
@Override
public int getCompilerFlags() {
return 0;
}
@Override
public String getLineQualifier() {
return "\\n|\\r"; //$NON-NLS-1$
}
}
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