insetpanel.java

java的简单例子

package jws.awt;

// Copyright 1997, John Webster Small
// All rights Reserved

import java.awt.*;
import java.awt.event.*;

public class InsetPanel extends Panel
{
  private Panel center;

  public Component add(Component comp)
  {
    if (center.getLayout() instanceof BorderLayout)
      return center.add("Center",comp);
    return center.add(comp);
  }

  public Component add(String name, Component comp)
    { return center.add(name, comp); }

  public Component add(Component comp, int index)
    { return center.add(comp,index); }

  public void add(Component comp, Object constraints)
    { center.add(comp,constraints); }

  public void add
    (Component comp, Object constraints, int index)
    { center.add(comp,constraints,index); }

  public void addContainerListner(ContainerListener l)
    { center.addContainerListener(l); }

  public void removeContainerListener(ContainerListener l)
    { center.removeContainerListener(l); }

  public void remove(int index)
    { center.remove(index); }

  public void remove(Component comp)
    { center.remove(comp); }

  public void removeAll()
    { center.removeAll(); }

  public LayoutManager getLayout()
    { return center.getLayout(); }

  public void setLayout(LayoutManager mgr)
  {
    if (center == null)
      super.setLayout(mgr);
    else
      center.setLayout(mgr);
  }

  private void init
    (int top, int left, int bottom, int right)
  {
    super.setLayout(new BorderLayout());
    super.add("East",new FixedFill(left,10));
    super.add("North",new FixedFill(10,top));
    super.add("West",new FixedFill(right,10));
    super.add("South",new FixedFill(bottom,10));
    center = new Panel();
    center.setLayout(new BorderLayout());
    super.add("Center",center);
  }

  public InsetPanel(int top, int left, int bottom, int right)
    { init(top,left,bottom,right); }

  public InsetPanel(Insets i)
    { init(i.top,i.left,i.bottom,i.right); }

  public InsetPanel(int top, int left, int bottom, int right, Panel p)
  {
    init(top,left,bottom,right);
    add(p);
  }

/*
  public static void main(String[] args)
  {
    InsetPanel p = new InsetPanel(10,10,10,10);
    p.add(new OutlinedPanel("Folders"));
    new WinFrame("InsetPanel Demo",p)
      .appMainWindow().setVisible(true);
  }
*/
}