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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
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 * Project Info:  https://plantuml.com
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 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the Eclipse Public License.
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 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
 * LICENSE ("AGREEMENT"). [Eclipse Public License - v 1.0]
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 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
 * RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
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 * You may obtain a copy of the License at
 *
 * http://www.eclipse.org/legal/epl-v10.html
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 * 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.
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 * 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
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 * 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 EPL license.
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 * The generated images can then be used without any reference to the EPL license.
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 * by any license, then the generated images are logically covered
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 * 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
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 * 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
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 *
 */
package net.sourceforge.plantuml.activitydiagram3.gtile;

import java.util.Arrays;
import java.util.List;

import net.sourceforge.plantuml.activitydiagram3.ftile.Swimlane;
import net.sourceforge.plantuml.decoration.Rainbow;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.style.ISkinParam;
import net.sourceforge.plantuml.style.SName;
import net.sourceforge.plantuml.style.Style;
import net.sourceforge.plantuml.style.StyleSignatureBasic;

public abstract class GAbstractConnection implements GConnection {

	protected final GPoint gpoint1;
	protected final GPoint gpoint2;

	public GAbstractConnection(GPoint gpoint1, GPoint gpoint2) {
		this.gpoint1 = gpoint1;
		this.gpoint2 = gpoint2;
	}

	@Override
	public String toString() {
		return "[" + gpoint1 + "]->[" + gpoint2 + "]";
	}

	@Override
	final public List getHooks() {
		return Arrays.asList(gpoint1, gpoint2);
	}

	@Override
	final public void drawTranslatable(UGraphic ug) {
		final Swimlane swimlane1 = gpoint1.getSwimlane();
		final Swimlane swimlane2 = gpoint2.getSwimlane();

		if (swimlane1 == swimlane2)
			return;

		final UTranslate translate1 = swimlane1.getTranslate();
		final UTranslate translate2 = swimlane2.getTranslate();

		drawTranslate(ug, translate1, translate2);

	}

	public void drawTranslate(UGraphic ug, UTranslate translate1, UTranslate translate2) {
		throw new UnsupportedOperationException();
	}

	private final StyleSignatureBasic getDefaultStyleDefinitionArrow() {
		return StyleSignatureBasic.of(SName.root, SName.element, SName.activityDiagram, SName.arrow);
	}

	protected ISkinParam skinParam() {
		throw new UnsupportedOperationException("wip");
	}

	// DUPLICATE 4561
	final protected Rainbow getInLinkRenderingColor() {
		final ISkinParam skinParam = gpoint1.getGtile().skinParam();
		final Style style = getDefaultStyleDefinitionArrow().getMergedStyle(skinParam.getCurrentStyleBuilder());
		final Rainbow color = Rainbow.build(style, skinParam.getIHtmlColorSet());
//		final LinkRendering linkRendering = tile.getInLinkRendering();
//		if (linkRendering == null) {
//			if (UseStyle.useBetaStyle()) {
//				final Style style = getDefaultStyleDefinitionArrow()
//						.getMergedStyle(skinParam().getCurrentStyleBuilder());
//				return Rainbow.build(style, skinParam().getIHtmlColorSet(), skinParam().getThemeStyle());
//			} else {
//				color = Rainbow.build(skinParam());
//			}
//		} else {
//			color = linkRendering.getRainbow();
//		}
//		if (color.size() == 0) {
//			if (UseStyle.useBetaStyle()) {
//				final Style style = getDefaultStyleDefinitionArrow()
//						.getMergedStyle(skinParam().getCurrentStyleBuilder());
//				return Rainbow.build(style, skinParam().getIHtmlColorSet(), skinParam().getThemeStyle());
//			} else {
//				color = Rainbow.build(skinParam());
//			}
//		}
		return color;
	}

}