/*******************************************************************************
 * Copyright (c) 2000, 20017 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.ui.console;

import java.io.IOException;
import java.nio.charset.Charset;

import org.eclipse.ui.WorkbenchEncoding;

/**
 * Used to write messages to a message console. A message console may have more
 * than one stream connected to it. Each stream may be displayed in a different
 * color.
 * <p>
 * Instances are created via a {@link org.eclipse.ui.console.MessageConsole}.
 * </p>
 * <p>
 * Clients should avoid writing large amounts of output to this stream in the UI
 * thread. The console needs to process the output in the UI thread and if the client
 * hogs the UI thread writing output to the console, the console will not be able
 * to process the output.
 * </p>
 * <p>
 * Since 3.1, this class extends {@link org.eclipse.ui.console.IOConsoleOutputStream}.
 * </p>
 * @since 3.0
 * @noinstantiate This class is not intended to be instantiated by clients.
 * @noextend This class is not intended to be subclassed by clients.
 */
public class MessageConsoleStream extends IOConsoleOutputStream {

	private final MessageConsole fMessageConsole;

	/**
	 * Constructs a new stream connected to the given console with workbench default
	 * encoding.
	 *
	 * @param console the console to write messages to
	 */
	public MessageConsoleStream(MessageConsole console) {
		this(console, Charset.forName(WorkbenchEncoding.getWorkbenchDefaultEncoding()));
	}

	/**
	 * Constructs a new stream connected to the given console.
	 *
	 * @param console the console to write messages to
	 * @param charset encoding used to write to console
	 * @since 3.7
	 */
	public MessageConsoleStream(MessageConsole console, Charset charset) {
		super(console, charset);
		fMessageConsole = console;
	}

	/**
	 * Appends the specified message to this stream.
	 *
	 * @param message message to append
	 */
	public void print(String message) {
		try {
			write(message);
		} catch (IOException e) {
			ConsolePlugin.log(e);
		}
	}


	/**
	 * Appends a line separator string to this stream.
	 */
	public void println() {
		try {
			write("\n"); //$NON-NLS-1$
		} catch (IOException e) {
			ConsolePlugin.log(e);
		}
	}

	/**
	 * Appends the specified message to this stream, followed by a line
	 * separator string.
	 *
	 * @param message message to print
	 */
	public void println(String message) {
		print(message + "\n"); //$NON-NLS-1$
	}

	/**
	 * Returns the console this stream is connected to.
	 *
	 * @return the console this stream is connected to
	 */
	public MessageConsole getConsole() {
		return fMessageConsole;
	}
}
