org.eclipse.capra.ui.plantuml.util.SelectionUtil.java Source code

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Here is the source code for org.eclipse.capra.ui.plantuml.util.SelectionUtil.java

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/*******************************************************************************
 * Copyright (c) 2016 Chalmers | University of Gothenburg, rt-labs and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *  
 *   Contributors:
 *      Chalmers | University of Gothenburg and rt-labs - initial API and implementation and/or initial documentation
 *******************************************************************************/
package org.eclipse.capra.ui.plantuml.util;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.capra.core.CapraException;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;

/**
 * Contains supporting functionality required when creating trace links.
 */
public class SelectionUtil {

    /**
     * Extract selected elements from a selection event.
     * 
     * @param event
     *            This is the click event to create a trace
     * @return A list of all the selected elements
     * @throws CapraException
     */
    public static List<Object> extractSelectedElements(ExecutionEvent event) {
        ISelection selection = HandlerUtil.getCurrentSelection(event);
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            ArrayList<Object> result = new ArrayList<>();
            List<?> list = structuredSelection.toList();
            result.addAll(list);
            return result;
        }
        return new ArrayList<>();
    }

    /**
     * Extract selected elements from an {@link ISelection}.
     * 
     * @param selection
     * @return A list of all the selected elements
     * @throws CapraException
     */
    public static List<Object> extractSelectedElements(ISelection selection) {
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            ArrayList<Object> result = new ArrayList<>();
            List<?> list = structuredSelection.toList();
            result.addAll(list);
            return result;
        }
        return new ArrayList<>();
    }
}