Java/CommandStyleMultilinesCSS.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2023, Arnaud Roques
 *
 * Project Info:  http://plantuml.com
 * 
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 * PlantUML distributed in the hope that it will be useful, but
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 * License for more details.
 *
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 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
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 * Original Author:  Arnaud Roques
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 */
package net.sourceforge.plantuml.style;

import net.sourceforge.plantuml.SkinParam;
import net.sourceforge.plantuml.TitledDiagram;
import net.sourceforge.plantuml.command.BlocLines;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.command.CommandMultilines2;
import net.sourceforge.plantuml.command.MultilinesStrategy;
import net.sourceforge.plantuml.command.regex.IRegex;
import net.sourceforge.plantuml.command.regex.RegexConcat;
import net.sourceforge.plantuml.command.regex.RegexLeaf;

public class CommandStyleMultilinesCSS extends CommandMultilines2<TitledDiagram> {

	public CommandStyleMultilinesCSS() {
		super(getRegexConcat(), MultilinesStrategy.REMOVE_STARTING_QUOTE);
	}

	@Override
	public String getPatternEnd() {
		return "^[%s]*\\</style\\>[%s]*$";
	}

	private static IRegex getRegexConcat() {
		return RegexConcat.build(CommandStyleMultilinesCSS.class.getName(), RegexLeaf.start(), //
				new RegexLeaf("\\<style\\>"), //
				RegexLeaf.end() //
		);
	}

	protected CommandExecutionResult executeNow(TitledDiagram diagram, BlocLines lines) {
		try {
			final StyleBuilder styleBuilder = diagram.getSkinParam().getCurrentStyleBuilder();
			for (Style modifiedStyle : StyleLoader.getDeclaredStyles(lines.subExtract(1, 1), styleBuilder))
				diagram.getSkinParam().muteStyle(modifiedStyle);

			((SkinParam) diagram.getSkinParam()).applyPendingStyleMigration();
			return CommandExecutionResult.ok();
		} catch (NoStyleAvailableException e) {
			// e.printStackTrace();
			return CommandExecutionResult.error("General failure: no style available.");
		}
	}

}