ca.mcgill.cs.swevo.qualyzer.editors.ViewFragmentsAction.java Source code

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Here is the source code for ca.mcgill.cs.swevo.qualyzer.editors.ViewFragmentsAction.java

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/*******************************************************************************
 * Copyright (c) 2010 McGill University
 * 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:
 *     Jonathan Faubert
 *******************************************************************************/
/**
 * 
 */
package ca.mcgill.cs.swevo.qualyzer.editors;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.graphics.Point;
import org.eclipse.ui.dialogs.ElementListSelectionDialog;

import ca.mcgill.cs.swevo.qualyzer.model.Code;
import ca.mcgill.cs.swevo.qualyzer.model.CodeEntry;
import ca.mcgill.cs.swevo.qualyzer.model.Fragment;
import ca.mcgill.cs.swevo.qualyzer.ui.ResourcesUtil;

/**
 * View all the associated fragments actions. Asks which code the user wants to examine and then
 * opens the fragment viewer.
 */
public class ViewFragmentsAction extends Action {
    private RTFEditor fEditor;
    private RTFSourceViewer fViewer;

    /**
     * @param rtfEditor
     */
    public ViewFragmentsAction(RTFEditor rtfEditor, RTFSourceViewer viewer) {
        fEditor = rtfEditor;
        fViewer = viewer;
        setText(Messages.getString("editors.ViewFragmentsAction.viewFragments")); //$NON-NLS-1$
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.action.Action#run()
     */
    @Override
    public void run() {
        Point selection = fViewer.getSelectedRange();
        Fragment fragment = fEditor.getDocument().getFragments().get(selection.x);

        Code toOpen = chooseCode(fragment);

        if (toOpen != null) {
            ResourcesUtil.openEditor(fEditor.getSite().getPage(), toOpen);
        }
    }

    /**
     * Opens the selection dialog and then returns the code that the user wants to view.
     * @param fragment
     * @return
     */
    private Code chooseCode(Fragment fragment) {
        Code toOpen = fragment.getCodeEntries().get(0).getCode();
        if (fragment.getCodeEntries().size() > 1) {
            ElementListSelectionDialog dialog = new ElementListSelectionDialog(fEditor.getSite().getShell(),
                    new LabelProvider());
            String[] codes = new String[fragment.getCodeEntries().size()];

            for (int i = 0; i < codes.length; i++) {
                codes[i] = fragment.getCodeEntries().get(i).getCode().getCodeName();
            }
            dialog.setMessage(Messages.getString("editors.ViewFragmentsAction.chooseCode")); //$NON-NLS-1$
            dialog.setElements(codes);
            dialog.setMultipleSelection(false);

            if (dialog.open() == Window.OK) {
                Object[] choice = dialog.getResult();
                String codeName = (String) choice[0];

                for (CodeEntry entry : fragment.getCodeEntries()) {
                    if (entry.getCode().getCodeName().equals(codeName)) {
                        toOpen = entry.getCode();
                        break;
                    }
                }
            } else {
                return null;
            }
        }
        return toOpen;
    }

}