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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
 * If you like this project or if you find it useful, you can support us at:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
 * https://plantuml.com/liberapay (only 1€ per month!)
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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 V2.
 *
 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
 * LICENSE ("AGREEMENT"). [GNU General Public License V2]
 *
 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
 * RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
 *
 * You may obtain a copy of the License at
 *
 * https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this GPL v2 license.
 *
 * The generated images can then be used without any reference to the GPL v2 license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
 * by the very same license.
 *
 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.bpm;

import net.atmp.InnerStrategy;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColors;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.geom.MagneticBorder;
import net.sourceforge.plantuml.klimt.geom.MagneticBorderNone;
import net.sourceforge.plantuml.klimt.geom.MinMax;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.geom.XRectangle2D;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.klimt.shape.ULine;
import net.sourceforge.plantuml.style.ISkinParam;

public class ConnectorPuzzleEmpty extends AbstractConnectorPuzzle implements Placeable, TextBlock, ConnectorPuzzle {

	public static ConnectorPuzzleEmpty get(String value) {
		final ConnectorPuzzleEmpty result = new ConnectorPuzzleEmpty();
		for (Where w : Where.values()) {
			if (value.contains(w.toShortString())) {
				result.append(w);
			}
		}
		return result;
	}

	public boolean checkDirections(String directions) {
		return connections().equals(get(directions).connections());
	}

	@Override
	public String toString() {
		if (connections().size() == 0) {
			return "NONE";

		}
		return connections().toString();
	}

	public XDimension2D getDimension(StringBounder stringBounder, ISkinParam skinParam) {
		return new XDimension2D(20, 20);
	}

	public TextBlock toTextBlock(ISkinParam skinParam) {
		return this;
	}

	public String getId() {
		throw new UnsupportedOperationException();
	}

	public void drawU(UGraphic ug) {
		// System.err.println("DRAWING " + toString());
		ug = ug.apply(HColors.BLUE);
		for (Where w : Where.values()) {
			if (have(w)) {
				drawLine(ug, w);
			}
		}

	}

	private void drawLine(UGraphic ug, Where w) {
		if (w == Where.WEST) {
			ug.apply(UTranslate.dy(10)).draw(ULine.hline(10));
		}
		if (w == Where.EAST) {
			ug.apply(new UTranslate(10, 10)).draw(ULine.hline(10));
		}
		if (w == Where.NORTH) {
			ug.apply(UTranslate.dx(10)).draw(ULine.vline(10));
		}
		if (w == Where.SOUTH) {
			ug.apply(new UTranslate(10, 10)).draw(ULine.vline(10));
		}
	}

	public XDimension2D calculateDimension(StringBounder stringBounder) {
		return new XDimension2D(20, 20);
	}

	public MinMax getMinMax(StringBounder stringBounder) {
		throw new UnsupportedOperationException();
	}

	public XRectangle2D getInnerPosition(String member, StringBounder stringBounder, InnerStrategy strategy) {
		return null;
	}

	@Override
	public MagneticBorder getMagneticBorder() {
		return new MagneticBorderNone();
	}

	@Override
	public HColor getBackcolor() {
		return null;
	}

}