FlowIndicatorBuilder.java

/**
 * Copyright (c) 2004-2025 Carnegie Mellon University and others. (see Contributors file).
 * All Rights Reserved.
 *
 * NO WARRANTY. ALL MATERIAL IS FURNISHED ON AN "AS-IS" BASIS. CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY
 * KIND, EITHER EXPRESSED OR IMPLIED, AS TO ANY MATTER INCLUDING, BUT NOT LIMITED TO, WARRANTY OF FITNESS FOR PURPOSE
 * OR MERCHANTABILITY, EXCLUSIVITY, OR RESULTS OBTAINED FROM USE OF THE MATERIAL. CARNEGIE MELLON UNIVERSITY DOES NOT
 * MAKE ANY WARRANTY OF ANY KIND WITH RESPECT TO FREEDOM FROM PATENT, TRADEMARK, OR COPYRIGHT INFRINGEMENT.
 *
 * This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 * SPDX-License-Identifier: EPL-2.0
 *
 * Created, in part, with funding and support from the United States Government. (see Acknowledgments file).
 *
 * This program includes and/or can make use of certain third party source code, object code, documentation and other
 * files ("Third Party Software"). The Third Party Software that is used by this program is dependent upon your system
 * configuration. By using this program, You agree to comply with any and all relevant Third Party Software terms and
 * conditions contained in any such Third Party Software or separate license file distributed with such Third Party
 * Software. The parties who own the Third Party Software ("Third Party Licensors") are intended third party benefici-
 * aries to this license with respect to the terms applicable to their Third Party Software. Third Party Software li-
 * censes only apply to the Third Party Software and not any other portion of this program or this program as a whole.
 */
package org.osate.ge.graphics;

import org.osate.ge.graphics.internal.AgeConnection;
import org.osate.ge.graphics.internal.AgeConnectionTerminator;

/**
 * Builder for flow indicator graphics. Flow indicator graphics are used to indicate flow sources and sinks.
 * @since 2.0
 */
public final class FlowIndicatorBuilder {
	private AgeConnectionTerminator srcTerminator = null;
	private AgeConnectionTerminator dstTerminator = null;

	/**
	 * Private constructor to prevent direct instantiation.
	 * @see #create()
	 */
	private FlowIndicatorBuilder() {}

	/**
	 * Creates a flow indicator builder.
	 * @return a flow indicator builder
	 */
	public static FlowIndicatorBuilder create() {
		return new FlowIndicatorBuilder();
	}

	/**
	 * Configures the flow indicator builder to create an indicator with the specified terminator at the source end of the indicator.
	 * @param value the source terminator to use when creating the indicator
	 * @return this builder to allow method chaining.
	 */
	public FlowIndicatorBuilder sourceTerminator(final ConnectionTerminator value) {
		this.srcTerminator = (AgeConnectionTerminator)value;
		return this;
	}

	/**
	 * Configures the flow indicator builder to create an indicator with the specified terminator at the destination end of the indicator.
	 * @param value the destination terminator to use when creating the connection
	 * @return this builder to allow method chaining.
	 */
	public FlowIndicatorBuilder destinationTerminator(final ConnectionTerminator value) {
		this.dstTerminator = (AgeConnectionTerminator)value;
		return this;
	}

	/**
	 * Creates a flow indicator based on the current state of the builder. Flow indicator graphics are only supported when a source element
	 * which has a dock area is specified.
	 * @return the newly created graphic
	 */
	public Graphic build() {
		return AgeConnection.createFlowIndicator(srcTerminator, dstTerminator);
	}
}