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/* ========================================================================
 * 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.activitydiagram3.ftile.vcompact;

import java.awt.geom.Dimension2D;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import net.sourceforge.plantuml.Dimension2DDouble;
import net.sourceforge.plantuml.activitydiagram3.ftile.AbstractFtile;
import net.sourceforge.plantuml.activitydiagram3.ftile.Ftile;
import net.sourceforge.plantuml.activitydiagram3.ftile.FtileGeometry;
import net.sourceforge.plantuml.activitydiagram3.ftile.Swimlane;
import net.sourceforge.plantuml.graphic.StringBounder;
import net.sourceforge.plantuml.ugraphic.UGraphic;
import net.sourceforge.plantuml.ugraphic.UTranslate;

class FtileForkInner extends AbstractFtile {

	private final List<Ftile> forks = new ArrayList<Ftile>();

	public FtileForkInner(List<Ftile> forks) {
		super(forks.get(0).skinParam());
		for (Ftile ftile : forks) {
			this.forks.add(ftile);
		}
	}

	public Swimlane getSwimlaneIn() {
		return forks.get(0).getSwimlaneIn();
	}

	public Swimlane getSwimlaneOut() {
		return getSwimlaneIn();
	}

	public Set<Swimlane> getSwimlanes() {
		return mergeSwimlanes(forks);
	}

	public static Set<Swimlane> mergeSwimlanes(List<Ftile> tiles) {
		final Set<Swimlane> result = new HashSet<Swimlane>();
		for (Ftile tile : tiles) {
			result.addAll(tile.getSwimlanes());
		}
		return Collections.unmodifiableSet(result);
	}

	public void drawU(UGraphic ug) {
		final StringBounder stringBounder = ug.getStringBounder();

		double xpos = 0;
		for (Ftile ftile : forks) {
			ug.apply(new UTranslate(xpos, 0)).draw(ftile);
			final Dimension2D dim = ftile.calculateDimension(stringBounder);
			xpos += dim.getWidth();
		}
	}

	@Override
	protected FtileGeometry calculateDimensionFtile(StringBounder stringBounder) {
		double height = 0;
		double width = 0;
		for (Ftile ftile : forks) {
			final Dimension2D dim = ftile.calculateDimension(stringBounder);
			width += dim.getWidth();
			if (dim.getHeight() > height) {
				height = dim.getHeight();
			}
		}
		final Dimension2D dimTotal = new Dimension2DDouble(width, height);
		return new FtileGeometry(dimTotal, dimTotal.getWidth() / 2, 0, dimTotal.getHeight());
	}

	public UTranslate getTranslateFor(Ftile searched, StringBounder stringBounder) {
		double xpos = 0;
		for (Ftile ftile : forks) {
			if (ftile == searched) {
				return new UTranslate(xpos, 0);
			}
			final Dimension2D dim = ftile.calculateDimension(stringBounder);
			xpos += dim.getWidth();
		}
		throw new IllegalArgumentException();
	}

}