package bmsi.fsp;

import java.awt.Button;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.event.ActionEvent;
import java.awt.peer.ButtonPeer;

class FSButton extends FSComponent implements ButtonPeer {
  private String text;

  FSButton(Button but,FSToolkit toolkit) { super(but,toolkit); }

  protected void initialize() {
    Button but = (Button)target;
    String label = but.getLabel();
    if (label != null)
      setLabel(label);
    super.initialize();
  }

  public void paint(Graphics g) {
    //System.err.println("label.paint " + text);
    Dimension s = target.getSize();
    g.setColor(target.getBackground());
    g.fillRect(0,0,s.width,s.height);
    if (text == null) return;
    FontMetrics fm = g.getFontMetrics();
    int w = fm.stringWidth(text);
    int h = fm.getHeight();
    g.setColor(target.getForeground());
    g.drawString(text,(s.width - w)/2,(s.height + h)/2);
  }

  public Dimension getMinimumSize() {
    int w = (text != null) ? text.length() : 1;
    return toolkit.scale(new Dimension(w,1));
  }

  public void setLabel(String s) {
    text = s;
    repaint();
  }

  public void postKey(int k) {
    switch (k) {
    case TI.KEY_ENTER: case TI.KEY_F0: case ' ': case '\r':
      Button but = (Button)target;
      toolkit.theQueue.postEvent(
	new ActionEvent(but,ActionEvent.ACTION_PERFORMED,but.getActionCommand())
      );
      return;
    }
    super.postKey(k);
  }

}