CommandChartOrientation.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
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package net.sourceforge.plantuml.chart.command;

import net.sourceforge.plantuml.chart.ChartDiagram;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.command.ParserPass;
import net.sourceforge.plantuml.command.SingleLineCommand2;
import net.sourceforge.plantuml.regex.IRegex;
import net.sourceforge.plantuml.regex.RegexConcat;
import net.sourceforge.plantuml.regex.RegexLeaf;
import net.sourceforge.plantuml.regex.RegexResult;
import net.sourceforge.plantuml.utils.LineLocation;

public class CommandChartOrientation extends SingleLineCommand2<ChartDiagram> {

	public CommandChartOrientation() {
		super(false, getRegexConcat());
	}

	static IRegex getRegexConcat() {
		return RegexConcat.build(CommandChartOrientation.class.getName(), RegexLeaf.start(), //
				new RegexLeaf("orientation"), //
				RegexLeaf.spaceOneOrMore(), //
				new RegexLeaf(1, "ORIENTATION", "(vertical|horizontal)"), //
				RegexLeaf.end());
	}

	@Override
	protected CommandExecutionResult executeArg(ChartDiagram diagram, LineLocation location, RegexResult arg,
			ParserPass currentPass) {
		final String orientationStr = arg.get("ORIENTATION", 0);

		ChartDiagram.Orientation orientation;
		switch (orientationStr.toLowerCase()) {
		case "vertical":
			orientation = ChartDiagram.Orientation.VERTICAL;
			break;
		case "horizontal":
			orientation = ChartDiagram.Orientation.HORIZONTAL;
			break;
		default:
			return CommandExecutionResult.error("Invalid orientation: " + orientationStr);
		}

		return diagram.setOrientation(orientation);
	}
}