basecontainer.java

修正了jdk1.6中对托盘事件产生异常的bug.

/*
 * Copyright (C) 2004 NNL Technology AB
 * Visit www.infonode.net for information about InfoNode(R) 
 * products and how to contact NNL Technology AB.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, 
 * MA 02111-1307, USA.
 */


// $Id: BaseContainer.java,v 1.13 2005/12/04 13:46:03 jesper Exp $
package net.infonode.gui.panel;

import javax.swing.*;
import javax.swing.plaf.PanelUI;
import java.awt.*;

public class BaseContainer extends JPanel {
  private Color foreground;

  private Color background;

  private Font font;

  private Color overridedBackground;

  private Color overridedForeground;

  private Font overridedFont;

  private boolean forcedOpaque = true;

  private boolean opaque = true;

  private static PanelUI UI = new PanelUI() {
  };

  public BaseContainer() {
    this(true);
  }

  public BaseContainer(boolean opaque) {
    this(opaque, new BorderLayout());
  }

  public BaseContainer(LayoutManager l) {
    this(true, l);
  }

  public BaseContainer(final boolean opaque, LayoutManager l) {
    super(l);

    this.forcedOpaque = opaque;

    updateOpaque();
  }

  public void setUI(PanelUI ui) {
    Color oBackground = overridedBackground;
    Color oForeground = overridedForeground;
    Font oFont = overridedFont;

    oBackground = null;
    oForeground = null;
    oFont = null;

    setBackground(null);
    setForeground(null);
    setFont(null);

    super.setUI(ui);

    background = getBackground();
    foreground = getForeground();
    font = getFont();

    overridedBackground = oBackground;
    overridedForeground = oForeground;
    overridedFont = oFont;

    if (!forcedOpaque)
      super.setUI(UI);

    updateBackground();
    updateForeground();
    updateFont();
  }

  void setForcedOpaque(final boolean forcedOpaque) {
    if (this.forcedOpaque != forcedOpaque) {
      this.forcedOpaque = forcedOpaque;

      updateUI();
      updateOpaque();
    }
  }

  // Overrided

  public void setOpaque(boolean opaque) {
    this.opaque = opaque;

    updateOpaque();
  }

  protected void paintComponent(Graphics g) {
    if (forcedOpaque)
      super.paintComponent(g);
  }

  public void setForeground(Color fg) {
    this.foreground = fg;

    updateForeground();
  }

  public void setBackground(Color bg) {
    this.background = bg;

    updateBackground();
  }

  public void setFont(Font font) {
    this.font = font;

    updateFont();
  }

  void setOverridedForeround(Color fg) {
    this.overridedForeground = fg;

    updateForeground();
  }

  void setOverridedBackground(Color bg) {
    this.overridedBackground = bg;

    updateBackground();
  }

  void setOverrideFont(Font font) {
    this.overridedFont = font;

    updateFont();
  }

  private void updateBackground() {
    super.setBackground(overridedBackground == null ? background : overridedBackground);
  }

  private void updateForeground() {
    super.setForeground(overridedForeground == null ? foreground : overridedForeground);
  }

  private void updateFont() {
    super.setFont(overridedFont == null ? font : overridedFont);
  }

  private void updateOpaque() {
    super.setOpaque(forcedOpaque ? opaque : forcedOpaque);
  }
}