Is Only Visible Component : Container « Swing JFC « Java






Is Only Visible Component

   
import java.awt.Component;
import java.awt.Container;
import java.awt.Point;
import java.util.ArrayList;

import javax.swing.RootPaneContainer;
import javax.swing.SwingUtilities;
/**
 * 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: ComponentUtil.java,v 1.25 2005/12/04 13:46:04 jesper Exp $


public class Util {

  public static boolean hasVisibleChildren(Component c) {
    return getVisibleChildrenCount(c) > 0;
  }

  public static boolean isOnlyVisibleComponent(Component c) {
    return c != null && c.isVisible() && getVisibleChildrenCount(c.getParent()) == 1;
  }

  public static boolean isOnlyVisibleComponents(Component[] c) {
    if (c != null && c.length > 0) {
      boolean visible = getVisibleChildrenCount(c[0].getParent()) == c.length;
      if (visible)
        for (int i = 0; i < c.length; i++)
          visible = visible && c[i].isVisible();
      return visible;
    }
    return false;
  }
  public static int getVisibleChildrenCount(Component c) {
    if (c == null || !(c instanceof Container))
      return 0;

    int count = 0;
    Container container = (Container) c;

    for (int i = 0; i < container.getComponentCount(); i++)
      if (container.getComponent(i).isVisible())
        count++;

    return count;
  }

}

   
    
    
  








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