package widget.plaf.concrete;

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import widget.*;
import widget.plaf.*;

public class CComboPaneUI extends ComboPaneUI {
    protected ComboPane		pane;
    protected JComboBox[]	comboBoxes;

    public static ComponentUI createUI(JComponent c) {
	return new CComboPaneUI();
    }

    public void installUI(JComponent c) {
	this.pane = (ComboPane)c;

	pane.setOpaque(false);
	pane.setLayout(new GridBagLayout());
	pane.setBorder(new EmptyBorder(10, 10, 10, 10));

	int numCombos = pane.getNumCombos();
	comboBoxes = new JComboBox[numCombos];
	for (int i = 0; i < numCombos; i++) {

	    // Add the label.
	    JLabel label = new JLabel(pane.getLabel(i) + ": ", JLabel.RIGHT);
	    addComponent(pane, label, 0, i, 1, 1, 0.0, 0.0,
			 GridBagConstraints.BOTH, GridBagConstraints.CENTER);

	    // Add the combo box.
	    comboBoxes[i] = new JComboBox(pane.getModel(i));
	    addComponent(pane, comboBoxes[i], 1, i, 1, 1, 0.0, 0.0,
			 GridBagConstraints.BOTH, GridBagConstraints.CENTER);
  	}
    }

    /**
     * Adapted from O'Reilly's <i>Java AWT Reference</i>, p. 276,
     */
    public static void addComponent(Container container, Component component,
				    int gridx, int gridy,
				    int gridwidth, int gridheight,
				    double weightx, double weighty,
				    int fill, int anchor) {

	GridBagLayout gbl = (GridBagLayout)container.getLayout();
	GridBagConstraints gbc = new GridBagConstraints();
	gbc.gridx = gridx;
	gbc.gridy = gridy;
	gbc.gridwidth = gridwidth;
	gbc.gridheight = gridheight;
	gbc.weightx = weightx;
	gbc.weighty = weighty;
	gbc.fill = fill;
	gbc.anchor = anchor;
	gbl.setConstraints(component, gbc);
	container.add(component);
    }

    public void uninstallUI(JComponent c) { }
}