[ xframe-Bugs-1200208 ] Problem grouping headers

Bugs item #1200208, was opened at 2005-05-12 00:07
Message generated for change (Settings changed) made by kriede
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=454391&aid=1200208&group_id=48863

Category: JXTable
Group: swing
>Status: Closed
Resolution: Invalid
Priority: 5
Submitted By: Iñaqui Medina (inaquimj)
>Assigned to: Iñaqui Medina (inaquimj)
>Summary: Problem grouping headers

Initial Comment:
I need to fix an urgent problem and I don't have a clue. 
Any ideas?

I was using an old code that is something like:

public class GroupableTableHeader extends 
JTableHeader 
{
  protected Vector columnGroups = null;
    
  public GroupableTableHeader(TableColumnModel 
model) {
    super(model);
    setUI(new GroupableTableHeaderUI());
    setReorderingAllowed(false);

    setBackground(ECDividerPanel.gContentBgColor);
    setForeground(ECPanel.DARK_TEXT_COLOR);
    
    setFont(GUIConstants.standardFont);
  }
  
  public void setReorderingAllowed(boolean b) {
    reorderingAllowed = false;
  }
    
  public void addColumnGroup(ECColumnGroup g) {
    if (columnGroups == null) {
      columnGroups = new Vector();
    }
    columnGroups.addElement(g);
  }

  public Enumeration getColumnGroups(TableColumn 
col) {
    if (columnGroups == null) return null;
    Enumeration enum = columnGroups.elements();
    while (enum.hasMoreElements()) {
      ColumnGroup cGroup = (ColumnGroup)
enum.nextElement();
      Vector v_ret = cGroup.getColumnGroups(col,new 
Vector());
      if (v_ret != null) { 
	return v_ret.elements();
      }
    }
    return null;
  }
  
  public void setColumnMargin() {
    if (columnGroups == null) return;
    int columnMargin = getColumnModel
().getColumnMargin();
    Enumeration enum = columnGroups.elements();
    while (enum.hasMoreElements()) {
      ColumnGroup cGroup = (ColumnGroup)
enum.nextElement();
      cGroup.setColumnMargin(columnMargin);
    }
  } 
}



I know this is not the best code ever (I didn't write it) but 
it used to work and now it doesn't work with JXTables... I 
get:

java.lang.NullPointerException
	at 
net.sf.xframe.swing.table.DefaultColumnGroupHeaderRe
nderer.getTableCellRendererComponent
(DefaultColumnGroupHeaderRenderer.java:52)
	at 
net.sf.xframe.swing.table.ColumnGroupHeaderUI.paintCe
ll(ColumnGroupHeaderUI.java:118)
	at 
net.sf.xframe.swing.table.ColumnGroupHeaderUI.paint
(ColumnGroupHeaderUI.java:95)

Anything you can tell me about why this is happening I 
would really appreciate it.


----------------------------------------------------------------------

Comment By: Iñaqui Medina (inaquimj)
Date: 2005-05-12 02:29

Message:
Logged In: YES 
user_id=1086927

Ok. It seems that getTableHeader().addColumnGroup() works 
and I shouldn't be using the code avobe. So I'm changing the 
status of this bug to invalid.

I found out 2 things that I'll post separatelly.

----------------------------------------------------------------------

Comment By: Iñaqui Medina (inaquimj)
Date: 2005-05-12 00:57

Message:
Logged In: YES 
user_id=1086927

I just tried the the ColumnGroupHeader that comes with 
JXTable and still run into:

java.lang.NullPointerException
	at 
net.sf.xframe.swing.table.DefaultColumnGroupHeaderRenderer
.getTableCellRendererComponent
(DefaultColumnGroupHeaderRenderer.java:52)

Maybe how it's being used is wrong:

final TimeframeCol[] columns = cols;
        getLockedTable().setTableHeader(new 
ColumnGroupHeader(getLockedTable().getColumnModel())
        {
            public String getToolTipText(MouseEvent event)
            {
                int column = getLockedTable
().convertColumnIndexToModel(columnAtPoint(event.getPoint
()));
                String toolTip = "";
                if(column>-1)
                {
                    try
                    {
                        toolTip = columns[column-1].getTooltip();
                    }
                    catch (NullPointerException npe)
                    {
                        toolTip = "";
                    }
                    catch (ArrayIndexOutOfBoundsException 
aioobe)
                    {
                        toolTip = "";
                    }
                }
                return toolTip;
            }
        });
        
        ColumnGroupHeader header = new ColumnGroupHeader
(getScrollTable().getColumnModel())
        {
            public String getToolTipText(MouseEvent event)
            {
                int column = getScrollTable
().convertColumnIndexToModel(columnAtPoint(event.getPoint
()));
                String toolTip = "";
                if(column>-1)
                {
                    try
                    {
                        toolTip = columns
[column+getFrozenColumns()-1].getTooltip();
                    }
                    catch (NullPointerException npe)
                    {
                        toolTip = "";
                    }
                    catch (ArrayIndexOutOfBoundsException 
aioobe)
                    {
                        toolTip = "";
                    }
                }
                return toolTip;
            }
        };
        getScrollTable().setTableHeader(header);

----------------------------------------------------------------------

Comment By: Iñaqui Medina (inaquimj)
Date: 2005-05-12 00:27

Message:
Logged In: YES 
user_id=1086927

I just tried the the ColumnGroupHeader that comes with 
JXTable and still run into:

java.lang.NullPointerException
	at 
net.sf.xframe.swing.table.DefaultColumnGroupHeaderRenderer
.getTableCellRendererComponent
(DefaultColumnGroupHeaderRenderer.java:52)

Maybe how it's being used is wrong:

final TimeframeCol[] columns = cols;
        getLockedTable().setTableHeader(new 
ColumnGroupHeader(getLockedTable().getColumnModel())
        {
            public String getToolTipText(MouseEvent event)
            {
                int column = getLockedTable
().convertColumnIndexToModel(columnAtPoint(event.getPoint
()));
                String toolTip = "";
                if(column>-1)
                {
                    try
                    {
                        toolTip = columns[column-1].getTooltip();
                    }
                    catch (NullPointerException npe)
                    {
                        toolTip = "";
                    }
                    catch (ArrayIndexOutOfBoundsException 
aioobe)
                    {
                        toolTip = "";
                    }
                }
                return toolTip;
            }
        });
        
        ColumnGroupHeader header = new ColumnGroupHeader
(getScrollTable().getColumnModel())
        {
            public String getToolTipText(MouseEvent event)
            {
                int column = getScrollTable
().convertColumnIndexToModel(columnAtPoint(event.getPoint
()));
                String toolTip = "";
                if(column>-1)
                {
                    try
                    {
                        toolTip = columns
[column+getFrozenColumns()-1].getTooltip();
                    }
                    catch (NullPointerException npe)
                    {
                        toolTip = "";
                    }
                    catch (ArrayIndexOutOfBoundsException 
aioobe)
                    {
                        toolTip = "";
                    }
                }
                return toolTip;
            }
        };
        getScrollTable().setTableHeader(header);

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=454391&aid=1200208&group_id=48863


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