/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2020, Arnaud Roques
 *
 * Project Info:  http://plantuml.com
 * 
 * If you like this project or if you find it useful, you can support us at:
 * 
 * http://plantuml.com/patreon (only 1$ per month!)
 * http://plantuml.com/paypal
 * 
 * This file is part of PlantUML.
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 *
 * Original Author:  Arnaud Roques
 *
 */
package net.sourceforge.plantuml.help;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import net.sourceforge.plantuml.FileFormatOption;
import net.sourceforge.plantuml.LineBreakStrategy;
import net.sourceforge.plantuml.UmlDiagram;
import net.sourceforge.plantuml.UmlDiagramType;
import net.sourceforge.plantuml.core.DiagramDescription;
import net.sourceforge.plantuml.core.ImageData;
import net.sourceforge.plantuml.creole.CreoleMode;
import net.sourceforge.plantuml.creole.CreoleParser;
import net.sourceforge.plantuml.creole.Sheet;
import net.sourceforge.plantuml.creole.SheetBlock1;
import net.sourceforge.plantuml.cucadiagram.Display;
import net.sourceforge.plantuml.graphic.FontConfiguration;
import net.sourceforge.plantuml.graphic.HorizontalAlignment;
import net.sourceforge.plantuml.ugraphic.ColorMapperIdentity;
import net.sourceforge.plantuml.ugraphic.ImageBuilder;
import net.sourceforge.plantuml.ugraphic.UFont;

public class Help extends UmlDiagram {

	private final List<CharSequence> lines = new ArrayList<CharSequence>();

	public DiagramDescription getDescription() {
		return new DiagramDescription("(Help)");
	}

	@Override
	public UmlDiagramType getUmlDiagramType() {
		return UmlDiagramType.HELP;
	}

	@Override
	protected ImageData exportDiagramInternal(OutputStream os, int index, FileFormatOption fileFormat)
			throws IOException {
		final Display display = Display.create(lines);
		final UFont font = UFont.serif(16);
		final FontConfiguration fontConfiguration = FontConfiguration.blackBlueTrue(font);
		final Sheet sheet = new CreoleParser(fontConfiguration, HorizontalAlignment.LEFT, getSkinParam(),
				CreoleMode.FULL).createSheet(display);
		final SheetBlock1 sheetBlock = new SheetBlock1(sheet, LineBreakStrategy.NONE, 0);

		final ImageBuilder builder = new ImageBuilder(new ColorMapperIdentity(), 1.0, null, null, null, 0, 0, null,
				false);
		builder.setUDrawable(sheetBlock);
		return builder.writeImageTOBEMOVED(fileFormat, 0, os);
	}

	public void add(CharSequence line) {
		this.lines.add(line);
	}

}
