/*
 * (swing1.1beta3)
 *
 */

package jp.gr.java_conf.tame.swing.table;

import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;



/**
  * GroupableTableHeader
  *
  * @version 1.1 2010/10/23
  * @author Nobuo Tamemasa (modified by Q)
  */

public class GroupableTableHeader extends JTableHeader {
  private static final String uiClassID = "GroupableTableHeaderUI";
  protected Vector columnGroups = null;

  public GroupableTableHeader(TableColumnModel model) {
    super(model);
    setReorderingAllowed(false);
  }

  public void setReorderingAllowed(boolean b) {
    reorderingAllowed = false;
  }

  public void addColumnGroup(ColumnGroup g) {
    if (columnGroups == null) {
      columnGroups = new Vector();
    }
    columnGroups.addElement(g);
  }

  public Enumeration getColumnGroups(TableColumn col) {
    if (columnGroups == null) return null;
    Enumeration en = columnGroups.elements();
    while (en.hasMoreElements()) {
      ColumnGroup cGroup = (ColumnGroup)en.nextElement();
      Vector v_ret = (Vector)cGroup.getColumnGroups(col,new Vector());
      if (v_ret != null) {
	return v_ret.elements();
      }
    }
    return null;
  }

  @Override
public void updateUI() {
    setUI(new GroupableTableHeaderUI());

      TableCellRenderer tablecellrenderer = getDefaultRenderer();
      if(tablecellrenderer instanceof Component)
          SwingUtilities.updateComponentTreeUI((Component)tablecellrenderer);

}

  public void setColumnMargin() {
    if (columnGroups == null) return;
    int columnMargin = getColumnModel().getColumnMargin();
    Enumeration en = columnGroups.elements();
    while (en.hasMoreElements()) {
      ColumnGroup cGroup = (ColumnGroup)en.nextElement();
      cGroup.setColumnMargin(0/*columnMargin*/);
    }
  }

}