net.grinder.console.swingui.LookAndFeel Maven / Gradle / Ivy

Go to download
// Copyright (C) 2004 - 2011 Philip Aston
// All rights reserved.
//
// This file is part of The Grinder software distribution. Refer to
// the file LICENSE which is part of The Grinder distribution for
// licensing details. The Grinder distribution is available on the
// Internet at http://grinder.sourceforge.net/
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.

package net.grinder.console.swingui;

import java.awt.Component;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.EventListener;
import java.util.List;

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

import net.grinder.console.model.ConsoleProperties;


/**
 * Manage Look and Feel.
 *
 * @author Philip Aston
 */
final class LookAndFeel {

  private final List m_listeners = new ArrayList();

  private final UIManager.LookAndFeelInfo[] m_installedLookAndFeels =
    UIManager.getInstalledLookAndFeels();

  public LookAndFeel(ConsoleProperties properties,
                     SwingDispatcherFactory swingDispatcherFactory) {

    properties.addPropertyChangeListener(
      ConsoleProperties.LOOK_AND_FEEL_PROPERTY,
      swingDispatcherFactory.create(
        PropertyChangeListener.class,
        new PropertyChangeListener() {
          public void propertyChange(PropertyChangeEvent event) {
            setLookAndFeel((String)event.getNewValue());
          }
        }));

    setLookAndFeel(properties.getLookAndFeel());

    // The LAF in the properties may differ from the installed one.
    // Perhaps the user is sharing the properties file across
    // architectures (or perhaps across JVMs). We leave the default
    // alone unless the user specifically changes it.
  }

  public UIManager.LookAndFeelInfo[] getInstalledLookAndFeels() {
    return m_installedLookAndFeels;
  }

  private void setLookAndFeel(String className) {

    try {
      if (className != null) {
        UIManager.setLookAndFeel(className);
      }
      else {
        UIManager.setLookAndFeel(
          UIManager.getCrossPlatformLookAndFeelClassName());
      }
    }
    catch (ClassNotFoundException e) {
      throw new AssertionError(e);
    }
    catch (IllegalAccessException e) {
      throw new AssertionError(e);
    }
    catch (InstantiationException e) {
      throw new AssertionError(e);
    }
    catch (UnsupportedLookAndFeelException e) {
      throw new AssertionError(e);
    }

    synchronized (m_listeners) {
      for (Listener listener : m_listeners) {
        listener.lookAndFeelChanged();
      }
    }
  }

  public void addListener(Listener window) {
    synchronized (m_listeners) {
      m_listeners.add(window);
    }
  }

  /**
   * Listeners implement this to learn about LAF changes.
   */
  interface Listener extends EventListener {
    /**
     * LookAndFeel dispatches notification in Swing thread.
     */
    void lookAndFeelChanged();
  }

  /**
   * {@link LookAndFeel.Listener} that does the basic post-LAF change
   * refreshing of a Component.
   */
  static class ComponentListener implements Listener {
    private final Component m_component;

    public ComponentListener(Component component) {
      m_component = component;
    }

    public void lookAndFeelChanged() {
      SwingUtilities.updateComponentTreeUI(m_component);
    }
  }
}