plantuml/src/net/sourceforge/plantuml/activitydiagram3/InstructionSwitch.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2020, Arnaud Roques
 *
 * Project Info:  http://plantuml.com
 * 
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 * This file is part of PlantUML.
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 * 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.
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 * Original Author:  Arnaud Roques
 *
 *
 */
package net.sourceforge.plantuml.activitydiagram3;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.Set;

import net.sourceforge.plantuml.ISkinParam;
import net.sourceforge.plantuml.activitydiagram3.ftile.Ftile;
import net.sourceforge.plantuml.activitydiagram3.ftile.FtileFactory;
import net.sourceforge.plantuml.activitydiagram3.ftile.Swimlane;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.cucadiagram.Display;
import net.sourceforge.plantuml.graphic.color.Colors;
import net.sourceforge.plantuml.sequencediagram.NotePosition;
import net.sourceforge.plantuml.sequencediagram.NoteType;
import net.sourceforge.plantuml.ugraphic.color.HColor;

public class InstructionSwitch extends WithNote implements Instruction, InstructionCollection {

	private final List<Branch> branches = new ArrayList<>();
	private final ISkinParam skinParam;

	private final Instruction parent;

	private Branch current;
	private final LinkRendering topInlinkRendering;
	private LinkRendering afterEndwhile = LinkRendering.none();
	private final Display labelTest;

	private final Swimlane swimlane;

	public boolean containsBreak() {
		for (Branch branch : branches) {
			if (branch.containsBreak()) {
				return true;
			}
		}
		return false;
	}

	public InstructionSwitch(Swimlane swimlane, Instruction parent, Display labelTest, LinkRendering inlinkRendering,
			HColor color, ISkinParam skinParam) {
		this.topInlinkRendering = Objects.requireNonNull(inlinkRendering);
		this.parent = parent;
		this.skinParam = skinParam;
		this.labelTest = labelTest;
		this.swimlane = swimlane;
	}

	public CommandExecutionResult add(Instruction ins) {
		if (current == null) {
			return CommandExecutionResult.error("No 'case' in this switch");
		}
		return current.add(ins);
	}

	public Ftile createFtile(FtileFactory factory) {
		for (Branch branch : branches) {
			branch.updateFtile(factory);
		}
		return factory.createSwitch(swimlane, branches, afterEndwhile, topInlinkRendering, labelTest);
	}

	final public boolean kill() {
		return current.kill();
	}

	public LinkRendering getInLinkRendering() {
		return topInlinkRendering;
	}

	public Set<Swimlane> getSwimlanes() {
		final Set<Swimlane> result = new HashSet<>();
		if (swimlane != null) {
			result.add(swimlane);
		}
		for (Branch branch : branches) {
			result.addAll(branch.getSwimlanes());
		}
		return Collections.unmodifiableSet(result);
	}

	public Swimlane getSwimlaneIn() {
		return swimlane;
	}

	public Swimlane getSwimlaneOut() {
		return swimlane;
	}

	public Instruction getLast() {
		return branches.get(branches.size() - 1).getLast();
	}

	public boolean switchCase(Display labelCase, LinkRendering nextLinkRenderer) {
		this.current = new Branch(skinParam.getCurrentStyleBuilder(), swimlane,
				LinkRendering.none().withDisplay(labelCase), labelCase, null,
				LinkRendering.none().withDisplay(labelCase));
		this.branches.add(this.current);
		return true;
	}

	public Instruction getParent() {
		return parent;
	}

	public void endSwitch(LinkRendering nextLinkRenderer) {
		// TODO Auto-generated method stub

	}

	@Override
	public boolean addNote(Display note, NotePosition position, NoteType type, Colors colors, Swimlane swimlaneNote) {
		if (current.isEmpty()) {
			return super.addNote(note, position, type, colors, swimlaneNote);
		} else {
			return current.addNote(note, position, type, colors, swimlaneNote);
		}
	}

}