LAFManager.java

/***************************************************
*
* cismet GmbH, Saarbruecken, Germany
*
*              ... and it just works.
*
****************************************************/
package Sirius.navigator.ui;

import org.apache.log4j.Logger;

import java.awt.Component;

import java.util.Collection;
import java.util.LinkedHashMap;

import javax.swing.SwingUtilities;
import javax.swing.UIManager;

/**
 * DOCUMENT ME!
 *
 * @version  $Revision$, $Date$
 */
public final class LAFManager {

    //~ Static fields/initializers ---------------------------------------------

    private static final Logger logger = Logger.getLogger(LAFManager.class);
    private static LAFManager manager = null;

    //~ Instance fields --------------------------------------------------------

    private final LinkedHashMap installedLookAndFeels;

    //~ Constructors -----------------------------------------------------------

    /**
     * Creates a new LAFManager object.
     */
    private LAFManager() {
        this.installLookAndFeels();

        final UIManager.LookAndFeelInfo[] lnfinfo = UIManager.getInstalledLookAndFeels();

        this.installedLookAndFeels = new LinkedHashMap(lnfinfo.length);

        for (int i = 0; i < lnfinfo.length; i++) {
            if (logger.isDebugEnabled()) {
                logger.debug("installed look and feel #" + i + ": '" + lnfinfo[i].getName() + "' ("
                            + lnfinfo[i].getClassName() + ")"); // NOI18N
            }
            this.installedLookAndFeels.put(lnfinfo[i].getName(), lnfinfo[i]);
        }

        if (logger.isDebugEnabled()) {
            logger.debug("- SystemLookAndFeel class: '" + UIManager.getSystemLookAndFeelClassName() + "'"); // NOI18N
            logger.debug("- CrossPlatformLookAndFeel class: '" + UIManager.getCrossPlatformLookAndFeelClassName()
                        + "'");                                                                             // NOI18N
            logger.debug("- Default look and feel: '" + this.getDefaultLookAndFeel() + "'");                // NOI18N
            logger.debug("- Current look and feel: '" + UIManager.getLookAndFeel() + "'");                  // NOI18N
        }
    }

    //~ Methods ----------------------------------------------------------------

    /**
     * DOCUMENT ME!
     *
     * @return  DOCUMENT ME!
     */
    public static LAFManager getManager() {
        if (manager == null) {
            manager = new LAFManager();
        }

        return manager;
    }

    /**
     * DOCUMENT ME!
     *
     * @return  DOCUMENT ME!
     */
    public UIManager.LookAndFeelInfo getDefaultLookAndFeel() {
        return UIManager.getInstalledLookAndFeels()[0];
    }

    /**
     * DOCUMENT ME!
     *
     * @param   lnfName  DOCUMENT ME!
     *
     * @return  DOCUMENT ME!
     */
    public boolean isInstalledLookAndFeel(final String lnfName) {
        return this.installedLookAndFeels.containsKey(lnfName);
    }

    /**
     * DOCUMENT ME!
     *
     * @return  DOCUMENT ME!
     */
    public Collection getInstalledLookAndFeelNames() {
        return this.installedLookAndFeels.keySet();
    }

    /**
     * DOCUMENT ME!
     *
     * @param   lnfName  DOCUMENT ME!
     *
     * @return  DOCUMENT ME!
     */
    public boolean changeLookAndFeel(final String lnfName) {
        return this.changeLookAndFeel(lnfName, null);
    }

    /**
     * DOCUMENT ME!
     *
     * @param   lnfName    DOCUMENT ME!
     * @param   component  DOCUMENT ME!
     *
     * @return  DOCUMENT ME!
     */
    public boolean changeLookAndFeel(final String lnfName, final Component component) {
        final UIManager.LookAndFeelInfo lnfinfo;

        if (this.isInstalledLookAndFeel(lnfName)) {
            lnfinfo = (UIManager.LookAndFeelInfo)this.installedLookAndFeels.get(lnfName);
        } else {
            logger.warn("could not change look & feel: unknown look and feel '" + lnfName + "'"); // NOI18N
            lnfinfo = this.getDefaultLookAndFeel();
        }

        try {
            if (logger.isInfoEnabled()) {
                logger.info("changing look & feel to '" + lnfinfo + "' (" + lnfinfo.getClassName() + ")"); // NOI18N
            }
            if (lnfinfo.getName().equalsIgnoreCase("Plastic 3D"))                                          // NOI18N
            {
                if (logger.isDebugEnabled()) {
                    logger.debug("setting Plastic 3D Theme");                                              // NOI18N
                }
            }

            UIManager.setLookAndFeel(lnfinfo.getClassName());

            if (component != null) {
                SwingUtilities.updateComponentTreeUI(component);
                component.validate();
            }
        } catch (final Exception ex) {
            logger.error("could not change look to '" + lnfName + "'", ex); // NOI18N
            return false;
        }

        return true;
    }

    /**
     * DOCUMENT ME!
     */
    private void installLookAndFeels() {
        try {
            if (logger.isDebugEnabled()) {
                logger.debug("installing GTK+ Look & Feel");                                    // NOI18N
            }
            UIManager.installLookAndFeel("GTK+", "com.sun.java.swing.plaf.gtk.GTKLookAndFeel"); // NOI18N
        } catch (final Exception e) {
            logger.warn("could not install GTK+ & Feel", e);                                    // NOI18N
        }

        try {
            if (logger.isDebugEnabled()) {
                logger.debug("installing Plastic 3D Look & Feel"); // NOI18N
            }

            UIManager.installLookAndFeel("Plastic 3D", "com.jgoodies.looks.plastic.Plastic3DLookAndFeel"); // NOI18N
            final String heavyComps = System.getProperty("contains.heavyweight.comps");
            if ("true".equals(heavyComps)) {
                com.jgoodies.looks.Options.setPopupDropShadowEnabled(false);
            }
        } catch (final Exception e) {
            logger.warn("could not install Plastic 3D Look & Feel", e);                                    // NOI18N
        }
    }
}