RemoveBendpointsHandler.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.internal.ui.handlers;

import java.util.Collections;
import java.util.List;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.osate.ge.internal.diagram.runtime.AgeDiagram;
import org.osate.ge.internal.diagram.runtime.DiagramElement;
import org.osate.ge.internal.diagram.runtime.DiagramElementPredicates;
import org.osate.ge.internal.ui.util.SelectionUtil;
import org.osate.ge.internal.ui.util.UiUtil;

/**
 * Handler for the remove bendpoints command
 */
public class RemoveBendpointsHandler extends AbstractHandler {
	@Override
	public Object execute(final ExecutionEvent event) throws ExecutionException {
		final List<DiagramElement> selectedDiagramElements = AgeHandlerUtil.getSelectedDiagramElements();
		final AgeDiagram diagram = UiUtil.getDiagram(selectedDiagramElements);
		if (diagram == null) {
			throw new RuntimeException("Unable to get diagram");
		}

		diagram.modify("Remove Bendpoints", m -> {
			for (final DiagramElement de : selectedDiagramElements) {
				if (DiagramElementPredicates.isConnection(de)) {
					m.setBendpoints(de, Collections.emptyList());
				}
			}
		});

		return null;
	}

	@Override
	public void setEnabled(final Object evaluationContext) {
		final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
		final boolean enabled;
		if (window == null) {
			enabled = false;
		} else {
			enabled = SelectionUtil.getSelectedDiagramElements(window.getActivePage().getSelection(), true).stream()
					.anyMatch(DiagramElementPredicates::isConnection);
		}

		setBaseEnabled(enabled);
	}

}