/*******************************************************************************
* Copyright (c) 2016 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.windup.ui.internal.services;
import java.io.PrintStream;
import javax.annotation.PostConstruct;
import javax.inject.Singleton;
import org.eclipse.e4.core.di.annotations.Creatable;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.console.ConsolePlugin;
import org.eclipse.ui.console.IConsole;
import org.eclipse.ui.console.IConsoleConstants;
import org.eclipse.ui.console.IConsoleView;
import org.eclipse.ui.console.MessageConsole;
import org.eclipse.ui.console.MessageConsoleStream;
import org.jboss.tools.windup.ui.WindupUIPlugin;
/**
* Service for redirecting System.out and System.error streams to the console view.
*/
@Singleton
@Creatable
public class ConsoleService {
private static final String CONSOLE = "Windup Console"; //$NON-NLS-1$
private MessageConsole console;
private PrintStream printStream;
private PrintStream oldOut;
private PrintStream oldError;
@PostConstruct
private void init() {
console = new MessageConsole(CONSOLE, null);
ConsolePlugin.getDefault().getConsoleManager().addConsoles(new IConsole[]{console});
MessageConsoleStream consoleStream = console.newMessageStream();
printStream = new PrintStream(consoleStream);
}
/**
* Starts capturing logging and redirects it to the console view.
*/
public void startCapturing() {
showWindupConsole();
console.clearConsole();
oldOut = System.out;
oldError = System.err;
System.setOut(printStream);
System.setErr(printStream);
}
private void showWindupConsole() {
Display.getDefault().syncExec(() -> {
try {
IConsoleView view = (IConsoleView)PlatformUI.getWorkbench().getActiveWorkbenchWindow().
getActivePage().showView(IConsoleConstants.ID_CONSOLE_VIEW);
view.display(console);
} catch (PartInitException e) {
WindupUIPlugin.log(e);
}
});
}
public void write(String line) {
showWindupConsole();
printStream.println(line);
}
/**
* Stops capturing logging info, and restores streams.
*/
public void stopCapturing() {
System.setOut(oldOut);
System.setErr(oldError);
}
}