/** {@inheritDoc} */
public void setEditingSupport(EditingSupport editingSupport)
{
	currentEditingSupport = editingSupport;
	if (!getColumn().isVisible()) {
		return;
	}

    if (editingSupport instanceof CheckEditingSupport)
    {
        if (checkEditingSupport == null)
        {
            final int colIndex = getColumn().getParent().indexOf(getColumn());

            getColumn().getParent().addListener(SWT.Selection, new Listener()
            {
                public void handleEvent(Event event)
                {
                    if (event.detail == SWT.CHECK && event.index == colIndex)
                    {
                        GridItem item = (GridItem)event.item;
                        Object element = item.getData();
                        checkEditingSupport.setValue(element, new Boolean(item.getChecked(colIndex)));
                    }
                }
            });
        }
        checkEditingSupport = (CheckEditingSupport)editingSupport;
    }
    else
    {
        super.setEditingSupport(editingSupport);
    }
}
 

/** {@inheritDoc} */
public void setEditingSupport(EditingSupport editingSupport)
{
    if (editingSupport instanceof CheckEditingSupport)
    {
        if (checkEditingSupport == null)
        {
            final int colIndex = getColumn().getParent().indexOf(getColumn());
            
            getColumn().getParent().addListener(SWT.Selection, new Listener()
            {                
                public void handleEvent(Event event)
                {                         
                    if (event.detail == SWT.CHECK && event.index == colIndex)
                    {
                        GridItem item = (GridItem)event.item;
                        Object element = item.getData();
                        checkEditingSupport.setValue(element, new Boolean(item.getChecked(colIndex)));
                    }
                }                
            });
        }
        checkEditingSupport = (CheckEditingSupport)editingSupport;
    }
    else
    {
        super.setEditingSupport(editingSupport);
    }        
}
 

public void setEditingSupport(EditingSupport editingSupport)
{
    if (editingSupport instanceof CheckEditingSupport)
    {
        if (checkEditingSupport == null)
        {
            final int colIndex = getColumn().getParent().indexOf(getColumn());
            
            getColumn().getParent().addListener(SWT.Selection, new Listener()
            {                
                public void handleEvent(Event event)
                {                         
                    if (event.detail == SWT.CHECK && event.index == colIndex)
                    {
                        GridItem item = (GridItem)event.item;
                        Object element = viewer.getElementAt(viewer.getGrid().indexOf(item));
                        checkEditingSupport.setValue(element, new Boolean(item.getChecked(colIndex)));
                    }
                }                
            });
        }
        checkEditingSupport = (CheckEditingSupport)editingSupport;
    }
    else
    {
        super.setEditingSupport(editingSupport);
    }        
}
 

/** {@inheritDoc} */
public void setEditingSupport(EditingSupport editingSupport)
{
    if (editingSupport instanceof CheckEditingSupport)
    {
        if (checkEditingSupport == null)
        {
            final int colIndex = getColumn().getParent().indexOf(getColumn());
            
            getColumn().getParent().addListener(SWT.Selection, new Listener()
            {                
                public void handleEvent(Event event)
                {                         
                    if (event.detail == SWT.CHECK && event.index == colIndex)
                    {
                        GridItem item = (GridItem)event.item;
                        Object element = item.getData();
                        checkEditingSupport.setValue(element, new Boolean(item.getChecked(colIndex)));
                    }
                }                
            });
        }
        checkEditingSupport = (CheckEditingSupport)editingSupport;
    }
    else
    {
        super.setEditingSupport(editingSupport);
    }        
}
 

/** {@inheritDoc} */
public void setEditingSupport(EditingSupport editingSupport)
{
    if (editingSupport instanceof CheckEditingSupport)
    {
        if (checkEditingSupport == null)
        {
            final int colIndex = getColumn().getParent().indexOf(getColumn());
            
            getColumn().getParent().addListener(SWT.Selection, new Listener()
            {                
                public void handleEvent(Event event)
                {                         
                    if (event.detail == SWT.CHECK && event.index == colIndex)
                    {
                        GridItem item = (GridItem)event.item;
                        Object element = item.getData();
                        checkEditingSupport.setValue(element, new Boolean(item.getChecked(colIndex)));
                    }
                }                
            });
        }
        checkEditingSupport = (CheckEditingSupport)editingSupport;
    }
    else
    {
        super.setEditingSupport(editingSupport);
    }        
}
 

@Override
public EditingSupport getEditingSupport(ColumnViewer viewer) {
  return new GenericEditingSupport(viewer, this);
}
 

public EditingSupport getEditingSupport(ColumnViewer viewer);