    001/*****************************************************************************
    002 * Copyright by The HDF Group.                                               *
    003 * Copyright by the Board of Trustees of the University of Illinois.         *
    004 * All rights reserved.                                                      *
    005 *                                                                           *
    006 * This file is part of the HDF Java Products distribution.                  *
    007 * The full copyright notice, including terms governing use, modification,   *
    008 * and redistribution, is contained in the files COPYING and Copyright.html. *
    009 * COPYING can be found at the root of the source code distribution tree.    *
    010 * Or, see https://support.hdfgroup.org/products/licenses.html               *
    011 * If you do not have access to either file, you may request a copy from     *
    012 * help@hdfgroup.org.                                                        *
    013 ****************************************************************************/
    014
    015package hdf.view.PaletteView;
    016
    017import org.eclipse.swt.widgets.Shell;
    018
    019import hdf.view.Tools;
    020import hdf.view.ViewProperties;
    021import hdf.view.DataView.DataViewManager;
    022import hdf.view.ImageView.ImageView;
    023
    024/**
    025 * A simple Factory class which returns concrete instances of the default
    026 * PaletteView.
    027 *
    028 * @author jhenderson
    029 * @version 1.0 4/18/2018
    030 */
    031public class DefaultPaletteViewFactory extends PaletteViewFactory {
    032
    033    private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(DefaultPaletteViewFactory.class);
    034
    035    @Override
    036    public PaletteView getPaletteView(Shell parent, DataViewManager viewer, ImageView theImageView) throws ClassNotFoundException {
    037        String dataViewName = null;
    038        Object[] initargs;
    039        PaletteView theView = null;
    040
    041        dataViewName = ViewProperties.DEFAULT_PALETTEVIEW_NAME;
    042
    043        Class<?> theClass = null;
    044        try {
    045            log.trace("getPaletteView(): Class.forName({})", dataViewName);
    046
    047            /* Attempt to load the class by the given name */
    048            theClass = Class.forName(dataViewName);
    049        }
    050        catch (Exception ex) {
    051            log.debug("getPaletteView(): unable to load default PaletteView class by name({})", dataViewName);
    052            theClass = null;
    053        }
    054
    055        if (theClass == null) throw new ClassNotFoundException();
    056
    057        try {
    058            initargs = new Object[] { parent, viewer, theImageView };
    059
    060            theView = (PaletteView) Tools.newInstance(theClass, initargs);
    061
    062            log.trace("getPaletteView(): returning PaletteView instance {}", theView);
    063        }
    064        catch (Exception ex) {
    065            log.debug("getPaletteView(): Error instantiating class:", ex);
    066            theView = null;
    067        }
    068
    069        return theView;
    070    }
    071
    072}