libs-gui/Source/NSTableView.m

/** <title>NSTableView</title>

   Copyright (C) 2000 Free Software Foundation, Inc.

   Author: Nicola Pero <n.pero@mi.flashnet.it>
   Date: March 2000, June 2000, August 2000, September 2000
   
   Author: Pierre-Yves Rivaille <pyrivail@ens-lyon.fr>
   Date: August 2001, January 2002

   This file is part of the GNUstep GUI Library.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; see the file COPYING.LIB.
   If not, write to the Free Software Foundation,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/ 

#import <AppKit/NSTableView.h>
#import <AppKit/NSApplication.h>
#import <AppKit/NSCell.h>
#import <AppKit/NSClipView.h>
#import <AppKit/NSColor.h>
#import <AppKit/NSEvent.h>
#import <AppKit/NSGraphics.h>
#import <AppKit/NSScroller.h>
#import <AppKit/NSTableColumn.h>
#import <AppKit/NSTableHeaderView.h>
#import <AppKit/NSText.h>
#import <AppKit/NSTextFieldCell.h>
#import <AppKit/NSWindow.h>
#import <AppKit/PSOperators.h>
#import <AppKit/NSCachedImageRep.h>

#include <math.h>
static NSNotificationCenter *nc = nil;

static const int currentVersion = 2;

#define ALLOWS_MULTIPLE (1)
#define ALLOWS_EMPTY (1 << 1)
#define SHIFT_DOWN (1 << 2)
#define CONTROL_DOWN (1 << 3)
#define ADDING_ROW (1 << 4)


/*
 *  A specific struct and its associated quick sort function
 *  This is used by the -sizeToFit method
 */
typedef struct {
  float width;
  BOOL isMax;
} columnSorting;


static
void quick_sort_internal(columnSorting *data, int p, int r)
{
  if (p < r)
    {
      int q;
      {
	float x = data[p].width;
	BOOL y = data[p].isMax;
	int i = p - 1;
	int j = r + 1;
	columnSorting exchange;
	while(1)
	  {
	    j--;
	    for(; 
		(data[j].width > x)
		  || ((data[j].width == x) 
		      && (data[j].isMax == YES)
		      && (y == NO));
		j--)
	      ;

	    i++;
	    for(;
		(data[i].width < x)
		  || ((data[i].width == x) 
		      && (data[i].isMax == NO)
		      && (y == YES));
		i++)
	      ;
	    if ( i < j )
	      {
		exchange = data[j];
		data[j] = data[i];
		data[i] = exchange;
	      }
	    else
	      {
		q = j;
		break;
	      }
	  }
      }
      quick_sort_internal(data, p, q);
      quick_sort_internal(data, q + 1, r);
    }
}


/* The selection arrays are stored so that the selected columns/rows
   are always in ascending order.  The following function is used
   whenever a new column/row is added to the array, to keep the
   columns/rows in the correct order. */
static 
void _insertNumberInSelectionArray (NSMutableArray *array, 
				    NSNumber *num)
{
  int i, count;

  count = [array count];

  for (i = 0; i < count; i++)
    {
      NSNumber *number;

      number = [array objectAtIndex: i];
      if ([number compare: num] == NSOrderedDescending)
	break;
    }
  [array insertObject: num  atIndex: i];
}

/* 
 * Now some auxiliary functions used to manage real-time user selections. 
 *
 */

static void computeNewSelection
(NSTableView *tv,
 id delegate,
 NSSet *_oldSelectedRows,
 NSMutableArray *_selectedRows,
 int _originalRow,
 int _oldRow,
 int _currentRow,
 int *_selectedRow,
 unsigned selectionMode)
{
  if (   (selectionMode & ALLOWS_MULTIPLE)
      && (selectionMode & SHIFT_DOWN)
      && (selectionMode & ADDING_ROW))
    // we add new row to the current selection
    {
      if (_oldRow == -1)
	// this is the first pass
	{
	  int diff, i;
	  BOOL notified = NO;
      	  diff = _currentRow - _originalRow;

	  if (diff >= 0)
	    {
	      for (i = _originalRow; i <= _currentRow; i++)
		{
		  if ([_selectedRows 
			containsObject: 
			  [NSNumber numberWithInt: i]] == YES)
		    {
		      *_selectedRow = i;
		      notified = YES;
		    }
		  else
		    {
		      if ((delegate == nil) || 
			  [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    }
		}
	    }
	  else
	    {
	      // this case does happen, (sometimes)
	      for (i = _originalRow; i >= _currentRow; i--)
		{
		  if ([_selectedRows 
			containsObject: 
			  [NSNumber numberWithInt: i]] == YES)
		    {
		      *_selectedRow = i;
		      notified = YES;
		    }
		  else
		    {
		      if ((delegate == nil) || 
			  [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    }
		}
	    }
	  if (notified == YES)
	    {
	      [nc postNotificationName: 
		    NSTableViewSelectionIsChangingNotification
		  object: tv];
	    }
	}
      else // new multiple selection, after first pass
	{ 
	  int oldDiff, newDiff, i;
	  oldDiff = _oldRow - _originalRow;
	  newDiff = _currentRow - _originalRow;
	  if (oldDiff >= 0 && newDiff >= 0)
	    {
	      if (newDiff >= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow + 1; i <= _currentRow; i++)
		    {
		      if ([_selectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]] == YES)
			{
			  *_selectedRow = i;
			  notified = YES;
			}
		      else
			{
			  if ((delegate == nil) || 
			      [delegate tableView: tv shouldSelectRow: i] == YES)
			    {
			      if (notified == NO)
				{
				  notified = YES;
				}
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			    }
			}
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;
		  int pos;

		  for (i = _oldRow; i > _currentRow; i--)
		    {
		      if ([_oldSelectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]])
			{
			  // this row was in the old selection
			  // leave it selected
			  continue;
			}
		      
		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      NSNumber *lastObject = [_selectedRows lastObject];
		      if (lastObject == nil)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = [lastObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff <= 0)
	    {
	      if (newDiff <= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow - 1; i >= _currentRow; i--)
		    {
		      if ([_selectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]] == YES)
			{
			  *_selectedRow = i;
			  notified = YES;
			}
		      else
			{
			  if ((delegate == nil) || 
			      [delegate tableView: tv shouldSelectRow: i] == YES)
			    {
			      if (notified == NO)
				{
				  notified = YES;
				}
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			    }
			} 
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;
		  int pos;


		  for (i = _oldRow; i < _currentRow; i++)
		    {
		      if ([_oldSelectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]])
			{
			  // this row was in the old selection
			  // leave it selected
			  continue;
			}

		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      if ([_selectedRows count] == 0)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  NSNumber *firstObject = 
			    [_selectedRows objectAtIndex: 0];
			  *_selectedRow = [firstObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff >= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i < _originalRow; i++)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// leave it selected
			continue;
		      }
		    
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow + 1; i <= _currentRow; i++)
		  {
		    if ([_selectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]] == YES)
		      {
			*_selectedRow = i;
			notified = YES;
		      }
		    else
		      {
			if ((delegate == nil) || 
			    [delegate tableView: tv shouldSelectRow: i] == YES)
			  {
			    if (notified == NO)
			      {
				notified = YES;
			      }
			    [tv setNeedsDisplayInRect:
				  [tv rectOfRow: i]];
			    _insertNumberInSelectionArray
			      (_selectedRows,
			       [NSNumber numberWithInt: i]);
			    *_selectedRow = i;
			  }
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *firstObject = 
			[_selectedRows objectAtIndex: 0];
		      *_selectedRow = [firstObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	  else if (oldDiff >= 0 && newDiff <= 0)
	    {
	      BOOL notified = NO;

	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i > _originalRow; i--)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// leave it selected
			continue;
		      }
		    
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow - 1; i >= _currentRow; i--)
		  {
		    if ([_selectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]] == YES)
		      {
			*_selectedRow = i;
			notified = YES;
		      }
		    else
		      {
			if ((delegate == nil) || 
			    [delegate tableView: tv shouldSelectRow: i] == YES)
			  {
			    if (notified == NO)
			      {
				notified = YES;
			      }
			    [tv setNeedsDisplayInRect:
				  [tv rectOfRow: i]];
			    _insertNumberInSelectionArray
			      (_selectedRows,
			       [NSNumber numberWithInt: i]);
			    *_selectedRow = i;
			  }
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *lastObject = 
			[_selectedRows lastObject];
		      *_selectedRow = [lastObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }

	}
    }
  else if (   (selectionMode & ALLOWS_MULTIPLE)
	   && ((selectionMode & SHIFT_DOWN) == 0)
	   && (selectionMode & ALLOWS_EMPTY)
	      )
    // ic, sr : ok
    // new multiple selection (empty possible)
    {
      if (_oldRow == -1)
	// this is the first pass
	// we'll clear the selection first
	{
	  int diff, i;
	  int count = [_selectedRows count];
	  BOOL notified = NO;
      	  diff = _currentRow - _originalRow;

	  if (count > 0)
	    {
	      notified = YES;
	    }

	  for (i = 0; i < count; i++)
	    {
	      [tv setNeedsDisplayInRect: 
		    [tv rectOfRow: 
			  [[_selectedRows objectAtIndex: i] intValue]]];
	    }
	  [_selectedRows removeAllObjects];
	  *_selectedRow = -1;

	  if (diff >= 0)
	    {
	      for (i = _originalRow; i <= _currentRow; i++)
		{
		  if ((delegate == nil) || 
		      [delegate tableView: tv shouldSelectRow: i] == YES)
		    {
		      if (notified == NO)
			{
			  notified = YES;
			}

		      [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
		      _insertNumberInSelectionArray
			(_selectedRows,
			 [NSNumber numberWithInt: i]);
		      *_selectedRow = i;
		    }
		}
	    }
	  else
	    {
	      // this case does happen (sometimes)
	      for (i = _originalRow; i >= _currentRow; i--)
		{
		  if ((delegate == nil) || 
		      [delegate tableView: tv shouldSelectRow: i] == YES)
		    {
		      if (notified == NO)
			{
			  notified = YES;
			}

		      [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
		      _insertNumberInSelectionArray
			(_selectedRows,
			 [NSNumber numberWithInt: i]);
		      *_selectedRow = i;
		    }
		}
	    }
	  if (notified == YES)
	    {
	      [nc postNotificationName: 
		    NSTableViewSelectionIsChangingNotification
		  object: tv];
	    }
	}
      else // new multiple selection, after first pass
	{ 
	  int oldDiff, newDiff, i;
	  oldDiff = _oldRow - _originalRow;
	  newDiff = _currentRow - _originalRow;
	  if (oldDiff >= 0 && newDiff >= 0)
	    {
	      if (newDiff >= oldDiff)
		{
		  BOOL notified = NO;
		  for (i = _oldRow + 1; i <= _currentRow; i++)
		    {
		      if ((delegate == nil) || 
			       [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		{
		  BOOL notified = NO;
		  int pos;

		  for (i = _oldRow; i > _currentRow; i--)
		    {
		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      NSNumber *lastObject = [_selectedRows lastObject];
		      if (lastObject == nil)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = [lastObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff <= 0)
	    {
	      if (newDiff <= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow - 1; i >= _currentRow; i--)
		    {
		      if ((delegate == nil) || 
			       [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    } 
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;
		  int pos;


		  for (i = _oldRow; i < _currentRow; i++)
		    {
		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      if ([_selectedRows count] == 0)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  NSNumber *firstObject = 
			    [_selectedRows objectAtIndex: 0];
			  *_selectedRow = [firstObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff >= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i < _originalRow; i++)
		  {
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow + 1; i <= _currentRow; i++)
		  {
		    if ((delegate == nil) || 
			[delegate tableView: tv shouldSelectRow: i] == YES)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			_insertNumberInSelectionArray
			  (_selectedRows,
			   [NSNumber numberWithInt: i]);
			*_selectedRow = i;
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *firstObject = 
			[_selectedRows objectAtIndex: 0];
		      *_selectedRow = [firstObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	  else if (oldDiff >= 0 && newDiff <= 0)
	    {
	      BOOL notified = NO;

	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i > _originalRow; i--)
		  {
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow - 1; i >= _currentRow; i--)
		  {
		    if ((delegate == nil) || 
			[delegate tableView: tv shouldSelectRow: i] == YES)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			_insertNumberInSelectionArray
			  (_selectedRows,
			   [NSNumber numberWithInt: i]);
			*_selectedRow = i;
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *lastObject = 
			[_selectedRows lastObject];
		      *_selectedRow = [lastObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }

	}
    }
  else if ((((selectionMode & ALLOWS_MULTIPLE) == 0)
	    && ((selectionMode & SHIFT_DOWN) == 0))
	   || 
	   (((selectionMode & ALLOWS_MULTIPLE) == 0)
	    && ((selectionMode & ALLOWS_EMPTY) == 0))
	   ||
	   (((selectionMode & ALLOWS_MULTIPLE) == 0)
	    && (selectionMode & SHIFT_DOWN)
	    && (selectionMode & ALLOWS_EMPTY)
	    && (selectionMode & ADDING_ROW)))
    // we'll be selecting exactly one row
    // ic, sc : ok
    {
      int i;
      int j;
      int count = [_selectedRows count];
      BOOL notified = NO;

      if (delegate != nil)
	{
	  if ([delegate tableView: tv shouldSelectRow: _currentRow] == NO)
	    {
	      return;
	    }
	}
      
      if ((count != 1) || (_oldRow == -1))
	{
	  // this is the first call that goes thru shouldSelectRow
	  // Therefore we don't know anything about the selection
	  notified = YES;
	  for (i = 0; i < count; i++)
	    {
	      j = [[_selectedRows objectAtIndex: i] intValue];
	      if (j == _currentRow)
		{
		  notified = NO;
		  continue;
		}
	      [tv setNeedsDisplayInRect: 
		    [tv rectOfRow: j]];
	    }
	  [_selectedRows removeAllObjects];
	  [_selectedRows addObject: 
			   [NSNumber numberWithInt: _currentRow]];
	  *_selectedRow = _currentRow;
	  
	  if (notified == YES)
	    {
	      [tv setNeedsDisplayInRect:
		    [tv rectOfRow: _currentRow]];
	    }
	  else
	    {
	      if (count > 1)
		{
		  notified = YES;
		}
	    }
	  if (notified == YES)
	    {
	      [nc postNotificationName: 
		    NSTableViewSelectionIsChangingNotification
		  object: tv];
	    }
	}
      else
	{
	  // we know there is only one column selected
	  // this column is *_selectedRow

	  //begin checking code
	  if ([_selectedRows containsObject:
			     [NSNumber numberWithInt: *_selectedRow]]
	      == NO)
	    {
	      NSLog(@"*_selectedRow is not the only selected row!");
	    }
	  //end checking code

	  if (*_selectedRow == _currentRow)
	    {
	      // currentRow is already selecteed
	      return;
	    }
	  else
	    {
	      [_selectedRows replaceObjectAtIndex:0
			     withObject:
			       [NSNumber numberWithInt: _currentRow]];
	      [tv setNeedsDisplayInRect:
		    [tv rectOfRow: *_selectedRow]];
	      [tv setNeedsDisplayInRect:
		    [tv rectOfRow: _currentRow]];
	      *_selectedRow = _currentRow;
	      [nc postNotificationName: 
		    NSTableViewSelectionIsChangingNotification
		  object: tv];	      
	    }
	}
      
    }
  else if (((selectionMode & ALLOWS_MULTIPLE) == 0)
	   && ((selectionMode & SHIFT_DOWN) == SHIFT_DOWN)
	   && ((selectionMode & ALLOWS_EMPTY) == ALLOWS_EMPTY)
	   && ((selectionMode & ADDING_ROW) == 0))
    // we will unselect the selected row
    // ic, sc : ok
    {
      int i;
      int count = [_selectedRows count];
      /*
      BOOL wasOriginalRowSelected =
	[_oldSelectedRows containsObject:
			    [NSNumber numberWithInt: _originalRow]];
      */

      if ((count == 0) && (_oldRow == -1))
	{
	  NSLog(@"how did you get there ?");
	  NSLog(@"you're supposed to have clicked on a selected row,");
	  NSLog(@"but there's no selected row!");
	  return;
	}
      else if (count > 1)
	{
	  for (i = 0; i < count; i++)
	    {
	      [tv setNeedsDisplayInRect: 
		    [tv rectOfRow:
			  [[_selectedRows objectAtIndex: i] intValue]]];
	    }
	  [_selectedRows removeAllObjects];
	  *_selectedRow = -1;
	  [nc postNotificationName:
		NSTableViewSelectionIsChangingNotification
	      object: tv];
	  
	}
      else if (_currentRow != _originalRow)
	{
	  if (*_selectedRow == _originalRow)
	    {
	      // we are already selected, don't do anything
	    }
	  else
	    {
	      //begin checking code
	      if (count > 0)
		{
		  NSLog(@"There should not be any row selected");
		}
	      //end checking code

	      if (delegate != nil)
		{
		  if ([delegate tableView: tv shouldSelectRow: _originalRow] == NO)
		    {
		      return;
		    }
		}
	      [tv setNeedsDisplayInRect:
		    [tv rectOfRow: _originalRow]];
	      
	      [_selectedRows addObject: 
			       [NSNumber numberWithInt: _originalRow]];
	      *_selectedRow = _originalRow;
	      [nc postNotificationName:
		    NSTableViewSelectionIsChangingNotification
		  object: tv];
	    }
	}
      else if (_currentRow == _originalRow)
	{
	  if (count == 0)
	    {
	      // the row is already deselected
	      // nothing to do !
	    }
	  else
	    {
	      [tv setNeedsDisplayInRect:
		    [tv rectOfRow: _originalRow]];
	      [_selectedRows removeObjectAtIndex: 0];
	      *_selectedRow = -1;
	      [nc postNotificationName:
		    NSTableViewSelectionIsChangingNotification
		  object: tv];
	    }
	}
    }
  else if (((selectionMode & ALLOWS_MULTIPLE)
	    && ((selectionMode & SHIFT_DOWN) == 0)
	    && ((selectionMode & ALLOWS_EMPTY) == 0)
	    && (selectionMode & ADDING_ROW))
	   // the following case can be assimilated to the 
	   // one before, although it will lead to an
	   // extra redraw
	   // TODO: solve this issue
	   ||
	   ((selectionMode & ALLOWS_MULTIPLE)
	    && ((selectionMode & SHIFT_DOWN) == 0)
	    && ((selectionMode & ALLOWS_EMPTY) == 0)
	    && ((selectionMode & ADDING_ROW) == 0))
	   )
    {
      if (_oldRow == -1)
	{
	  // if we can select the _originalRow, we'll clear the old selection
	  // else we'll add to the old selection
	  if ((delegate == nil) || 
	      [delegate tableView: tv 
			shouldSelectRow: _currentRow] == YES)
	    {
	      // let's clear the old selection
	      // this code is copied from another case
	      // (AM = 1, SD=0, AE=1, AR=*, first pass)
	      int diff, i;
	      int count = [_selectedRows count];
	      BOOL notified = NO;
	      diff = _currentRow - _originalRow;
	      
	      if (count > 0)
		{
		  notified = YES;
		}
	      
	      for (i = 0; i < count; i++)
		{
		  [tv setNeedsDisplayInRect: 
			[tv rectOfRow: 
			      [[_selectedRows objectAtIndex: i] intValue]]];
		}
	      [_selectedRows removeAllObjects];
	      *_selectedRow = -1;
	      
	      if (diff >= 0)
		{
		  for (i = _originalRow; i <= _currentRow; i++)
		    {
		      if ((delegate == nil) || 
			  [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    }	      
		}
	      else
		{
		  for (i = _originalRow; i >= _currentRow; i--)
		    {
		      if ((delegate == nil) || 
			  [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    }	      
		}
	    }
	  else
	    {
	      // let's add to the old selection
	      // this code is copied from another case
	      // (AM=1, SD=1, AE=*, AR=1)
	      int diff, i;
	      //	      int count = [_selectedRows count];
	      BOOL notified = NO;
	      diff = _currentRow - _originalRow;
	      
	      if (diff >= 0)
		{
		  for (i = _originalRow; i <= _currentRow; i++)
		    {
		      if ([_selectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]] == YES)
			{
			  *_selectedRow = i;
			  notified = YES;
			}
		      else
			{
			  if ((delegate == nil) || 
			      [delegate tableView: tv shouldSelectRow: i] == YES)
			    {
			      if (notified == NO)
				{
				  notified = YES;
				}
			      
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			    }
			}
		    }
		}
	      else
		{
		  // this case does happen (sometimes)
		  for (i = _originalRow; i >= _currentRow; i--)
		    {
		      if ([_selectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]] == YES)
			{
			  *_selectedRow = i;
			  notified = YES;
			}
		      else
			{
			  if ((delegate == nil) || 
			      [delegate tableView: tv shouldSelectRow: i] == YES)
			    {
			      if (notified == NO)
				{
				  notified = YES;
				}
			      
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			    }
			}
		    }
		}
	      if (notified == YES)
		{
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	}
      else if ([_selectedRows containsObject:
				[NSNumber numberWithInt: _originalRow]])
	// as the originalRow is selected,
	// we are in a new selection
	{
	  // this code is copied from another case
	  // (AM=1, SD=0, AE=1, AR=*, after first pass)
	  int oldDiff, newDiff, i;
	  oldDiff = _oldRow - _originalRow;
	  newDiff = _currentRow - _originalRow;
	  if (oldDiff >= 0 && newDiff >= 0)
	    {
	      if (newDiff >= oldDiff)
		{
		  BOOL notified = NO;
		  for (i = _oldRow + 1; i <= _currentRow; i++)
		    {
		      if ((delegate == nil) || 
			       [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		{
		  BOOL notified = NO;
		  int pos;

		  for (i = _oldRow; i > _currentRow; i--)
		    {
		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      NSNumber *lastObject = [_selectedRows lastObject];
		      if (lastObject == nil)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = [lastObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff <= 0)
	    {
	      if (newDiff <= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow - 1; i >= _currentRow; i--)
		    {
		      if ((delegate == nil) || 
			       [delegate tableView: tv shouldSelectRow: i] == YES)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			}
		    } 
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;
		  int pos;


		  for (i = _oldRow; i < _currentRow; i++)
		    {
		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      if ([_selectedRows count] == 0)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  NSNumber *firstObject = 
			    [_selectedRows objectAtIndex: 0];
			  *_selectedRow = [firstObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff >= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i < _originalRow; i++)
		  {
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow + 1; i <= _currentRow; i++)
		  {
		    if ((delegate == nil) || 
			[delegate tableView: tv shouldSelectRow: i] == YES)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			_insertNumberInSelectionArray
			  (_selectedRows,
			   [NSNumber numberWithInt: i]);
			*_selectedRow = i;
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *firstObject = 
			[_selectedRows objectAtIndex: 0];
		      *_selectedRow = [firstObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	  else if (oldDiff >= 0 && newDiff <= 0)
	    {
	      BOOL notified = NO;

	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i > _originalRow; i--)
		  {
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow - 1; i >= _currentRow; i--)
		  {
		    if ((delegate == nil) || 
			[delegate tableView: tv shouldSelectRow: i] == YES)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			_insertNumberInSelectionArray
			  (_selectedRows,
			   [NSNumber numberWithInt: i]);
			*_selectedRow = i;
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *lastObject = 
			[_selectedRows lastObject];
		      *_selectedRow = [lastObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	}
      else
	// as the originalRow is not selection, 
	// we are adding to the old selection
	{
	  // this code is copied from another case
	  // (AM=1, SD=1, AE=*, AR=1, after first pass)
	  int oldDiff, newDiff, i;
	  oldDiff = _oldRow - _originalRow;
	  newDiff = _currentRow - _originalRow;

	  if (oldDiff >= 0 && newDiff >= 0)
	    {
	      if (newDiff >= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow + 1; i <= _currentRow; i++)
		    {
		      if ([_selectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]] == YES)
			{
			  *_selectedRow = i;
			  notified = YES;
			}
		      else
			{
			  if ((delegate == nil) || 
			      [delegate tableView: tv shouldSelectRow: i] == YES)
			    {
			      if (notified == NO)
				{
				  notified = YES;
				}
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			    }
			}
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;
		  int pos;

		  for (i = _oldRow; i > _currentRow; i--)
		    {
		      if ([_oldSelectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]])
			{
			  // this row was in the old selection
			  // leave it selected
			  continue;
			}
		      
		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      NSNumber *lastObject = [_selectedRows lastObject];
		      if (lastObject == nil)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = [lastObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff <= 0)
	    {
	      if (newDiff <= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow - 1; i >= _currentRow; i--)
		    {
		      if ([_selectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]] == YES)
			{
			  *_selectedRow = i;
			  notified = YES;
			}
		      else
			{
			  if ((delegate == nil) || 
			      [delegate tableView: tv shouldSelectRow: i] == YES)
			    {
			      if (notified == NO)
				{
				  notified = YES;
				}
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			    }
			} 
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;
		  int pos;


		  for (i = _oldRow; i < _currentRow; i++)
		    {
		      if ([_oldSelectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]])
			{
			  // this row was in the old selection
			  // leave it selected
			  continue;
			}

		      pos = [_selectedRows indexOfObject:
					     [NSNumber numberWithInt: i]];
		      if (pos != NSNotFound)
			{
			  if (notified == NO)
			    {
			      notified = YES;
			    }
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  [_selectedRows removeObject:
					   [NSNumber numberWithInt: i]];
			}
		    }
		  if (notified == YES)
		    {
		      if ([_selectedRows count] == 0)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  NSNumber *firstObject = 
			    [_selectedRows objectAtIndex: 0];
			  *_selectedRow = [firstObject intValue];
			}
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff >= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i < _originalRow; i++)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// leave it selected
			continue;
		      }
		    
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow + 1; i <= _currentRow; i++)
		  {
		    if ([_selectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]] == YES)
		      {
			*_selectedRow = i;
			notified = YES;
		      }
		    else
		      {
			if ((delegate == nil) || 
			    [delegate tableView: tv shouldSelectRow: i] == YES)
			  {
			    if (notified == NO)
			      {
				notified = YES;
			      }
			    [tv setNeedsDisplayInRect:
				  [tv rectOfRow: i]];
			    _insertNumberInSelectionArray
			      (_selectedRows,
			       [NSNumber numberWithInt: i]);
			    *_selectedRow = i;
			  }
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *firstObject = 
			[_selectedRows objectAtIndex: 0];
		      *_selectedRow = [firstObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	  else if (oldDiff >= 0 && newDiff <= 0)
	    {
	      BOOL notified = NO;

	      // we're reducing the selection
	      {
		int pos;
		for (i = _oldRow; i > _originalRow; i--)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// leave it selected
			continue;
		      }
		    
		    pos = [_selectedRows indexOfObject:
					   [NSNumber numberWithInt: i]];
		    if (pos != NSNotFound)
		      {
			if (notified == NO)
			  {
			    notified = YES;
			  }
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			[_selectedRows removeObject:
					 [NSNumber numberWithInt: i]];
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow - 1; i >= _currentRow; i--)
		  {
		    if ([_selectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]] == YES)
		      {
			*_selectedRow = i;
			notified = YES;
		      }
		    else
		      {
			if ((delegate == nil) || 
			    [delegate tableView: tv shouldSelectRow: i] == YES)
			  {
			    if (notified == NO)
			      {
				notified = YES;
			      }
			    [tv setNeedsDisplayInRect:
				  [tv rectOfRow: i]];
			    _insertNumberInSelectionArray
			      (_selectedRows,
			       [NSNumber numberWithInt: i]);
			    *_selectedRow = i;
			  }
		      }
		  }
	      }

	      if (notified == YES)
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      NSNumber *lastObject = 
			[_selectedRows lastObject];
		      *_selectedRow = [lastObject intValue];
		    }
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	}
    }
  else if ((selectionMode & ALLOWS_MULTIPLE)
	   && (selectionMode & SHIFT_DOWN)
	   && (selectionMode & ALLOWS_EMPTY)
	   && ((selectionMode & ADDING_ROW) == 0))
    {
      if (_oldRow == -1)
	// this is the first pass
	{
	  int diff, i;
	  unsigned pos;
	  //	  int count = [_selectedRows count];
	  BOOL notified = NO;
      	  diff = _currentRow - _originalRow;

	  if (diff >= 0)
	    {
	      for (i = _originalRow; i <= _currentRow; i++)
		{
		  if ((pos = [_selectedRows 
			       indexOfObject: 
				 [NSNumber numberWithInt: i]])
		      != NSNotFound)
		    {
		      [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
		      notified = YES;
		      [_selectedRows removeObjectAtIndex: pos];
		    }
		}
	      if (   notified 
		  && (*_selectedRow >= _originalRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}
	    }
	  else
	    {
	      // this case does happen (sometimes)
	      for (i = _originalRow; i >= _currentRow; i--)
		{
		  if ((pos = [_selectedRows 
			       indexOfObject: 
				 [NSNumber numberWithInt: i]])
		      != NSNotFound)
		    {
		      [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
		      notified = YES;
		      [_selectedRows removeObjectAtIndex: pos];
		    }
		}
	      if (   notified 
		  && (*_selectedRow >= _originalRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}
	    }
	  if (notified == YES)
	    {
	      [nc postNotificationName: 
		    NSTableViewSelectionIsChangingNotification
		  object: tv];
	    }
	}
      else // new multiple antiselection, after first pass
	{ 
	  int oldDiff, newDiff, i;
	  unsigned pos;
	  oldDiff = _oldRow - _originalRow;
	  newDiff = _currentRow - _originalRow;
	  if (oldDiff >= 0 && newDiff >= 0)
	    {
	      if (newDiff >= oldDiff)
		// we're extending the antiselection
		{
		  BOOL notified = NO;
		  for (i = _oldRow + 1; i <= _currentRow; i++)
		    {
		      if ((pos = [_selectedRows 
				   indexOfObject: 
				     [NSNumber numberWithInt: i]])
			  != NSNotFound)
			{
			  [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
			  notified = YES;
			  [_selectedRows removeObjectAtIndex: pos];
			}
		    }

		  if (   notified 
		      && (*_selectedRow > _oldRow)
		      && (*_selectedRow <= _currentRow))
		    {
		      if ([_selectedRows count] == 0)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = 
			    [[_selectedRows objectAtIndex: 0]
			      intValue];
			}
		    }

		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;

		  for (i = _oldRow; i > _currentRow; i--)
		    {
		      if ([_oldSelectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]])
			{
			  // this row was in the old selection
			  // select it
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			  notified = YES;
			}
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff <= 0)
	    {
	      if (newDiff <= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow - 1; i >= _currentRow; i--)
		    {
		      if ((pos = [_selectedRows 
				   indexOfObject: 
				     [NSNumber numberWithInt: i]])
			  != NSNotFound)
			{
			  [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
			  notified = YES;
			  [_selectedRows removeObjectAtIndex: pos];
			}
		    }

		  if (   notified 
		      && (*_selectedRow < _oldRow)
		      && (*_selectedRow >= _currentRow))
		    {
		      if ([_selectedRows count] == 0)
			{
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = 
			    [[_selectedRows objectAtIndex: 0]
			      intValue];
			}
		    }

		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;

		  for (i = _oldRow; i < _currentRow; i++)
		    {
		      if ([_oldSelectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]])
			{
			  // this row was in the old selection
			  // select it
			  [tv setNeedsDisplayInRect:
				[tv rectOfRow: i]];
			  _insertNumberInSelectionArray
			    (_selectedRows,
			     [NSNumber numberWithInt: i]);
			  *_selectedRow = i;
			  notified = YES;
			}
		    }

		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff >= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		for (i = _oldRow; i < _originalRow; i++)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// select it
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			_insertNumberInSelectionArray
			  (_selectedRows,
			   [NSNumber numberWithInt: i]);
			*_selectedRow = i;
			notified = YES;
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow + 1; i <= _currentRow; i++)
		  {
		    if ((pos = [_selectedRows 
				 indexOfObject: 
				   [NSNumber numberWithInt: i]])
			!= NSNotFound)
		      {
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			notified = YES;
			[_selectedRows removeObjectAtIndex: pos];
		      }
		  }
	      }

	      if (   notified 
		  && (*_selectedRow > _oldRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}

	      if (notified == YES)
		{
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	  else if (oldDiff >= 0 && newDiff <= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		for (i = _oldRow; i > _originalRow; i--)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// select it
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			_insertNumberInSelectionArray
			  (_selectedRows,
			   [NSNumber numberWithInt: i]);
			*_selectedRow = i;
			notified = YES;
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow - 1; i >= _currentRow; i--)
		  {
		    if ((pos = [_selectedRows 
				 indexOfObject: 
				   [NSNumber numberWithInt: i]])
			!= NSNotFound)
		      {
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			notified = YES;
			[_selectedRows removeObjectAtIndex: pos];
		      }
		  }
	      }

	      if (   notified 
		  && (*_selectedRow > _oldRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}

	      if (notified == YES)
		{
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	}
    }
  else if ((selectionMode & ALLOWS_MULTIPLE)
	   && (selectionMode & SHIFT_DOWN)
	   && ((selectionMode & ALLOWS_EMPTY) == 0)
	   && ((selectionMode & ADDING_ROW) == 0))
    {
      if (_oldRow == -1)
	// this is the first pass
	{
	  int diff, i;
	  unsigned pos;
	  int count = [_selectedRows count];
	  BOOL notified = NO;
      	  diff = _currentRow - _originalRow;

	  if (diff >= 0)
	    {
	      for (i = _originalRow; i <= _currentRow; i++)
		{
		  if (((pos = [_selectedRows 
			       indexOfObject: 
				 [NSNumber numberWithInt: i]])
		      != NSNotFound) && (count > 0))
		    {
		      [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
		      notified = YES;
		      [_selectedRows removeObjectAtIndex: pos];
		      count--;
		    }
		}
	      if (   notified 
		  && (*_selectedRow >= _originalRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      NSLog(@"error!");
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}
	    }
	  else
	    {
	      // this case does happen (sometimes)
	      for (i = _originalRow; i >= _currentRow; i--)
		{
		  if (((pos = [_selectedRows 
			       indexOfObject: 
				 [NSNumber numberWithInt: i]])
		      != NSNotFound) && (count > 0))
		    {
		      [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
		      notified = YES;
		      [_selectedRows removeObjectAtIndex: pos];
		      count--;
		    }
		}
	      if (   notified 
		  && (*_selectedRow >= _originalRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      NSLog(@"error!");
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}
	    }
	  if (notified == YES)
	    {
	      [nc postNotificationName: 
		    NSTableViewSelectionIsChangingNotification
		  object: tv];
	    }
	}
      else // new multiple antiselection, after first pass
	{ 
	  int oldDiff, newDiff, i;
	  unsigned pos;
	  int count = [_selectedRows count];
	  oldDiff = _oldRow - _originalRow;
	  newDiff = _currentRow - _originalRow;
	  if (oldDiff >= 0 && newDiff >= 0)
	    {
	      if (newDiff >= oldDiff)
		// we're extending the antiselection
		{
		  BOOL notified = NO;
		  for (i = _oldRow + 1; i <= _currentRow; i++)
		    {
		      if (((pos = [_selectedRows 
				   indexOfObject: 
				     [NSNumber numberWithInt: i]])
			  != NSNotFound) && (count > 1))
			{
			  [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
			  notified = YES;
			  [_selectedRows removeObjectAtIndex: pos];
			  count--;
			}
		    }

		  if (   notified 
		      && (*_selectedRow > _oldRow)
		      && (*_selectedRow <= _currentRow))
		    {
		      if ([_selectedRows count] == 0)
			{
			  NSLog(@"error!");
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = 
			    [[_selectedRows objectAtIndex: 0]
			      intValue];
			}
		    }

		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;

		  for (i = _oldRow; i > _currentRow; i--)
		    {
		      if (([_oldSelectedRows 
			     containsObject: 
			       [NSNumber numberWithInt: i]]))
			{
			  // this row was in the old selection
			  // select it
			  if ([_selectedRows 
				containsObject:
				  [NSNumber numberWithInt: i]] == NO)
			    {
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			      notified = YES;
			    }
			}
		    }
		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff <= 0)
	    {
	      if (newDiff <= oldDiff)
		// we're extending the selection
		{
		  BOOL notified = NO;
		  for (i = _oldRow - 1; i >= _currentRow; i--)
		    {
		      if (((pos = [_selectedRows 
				   indexOfObject: 
				     [NSNumber numberWithInt: i]])
			  != NSNotFound) && (count > 1))
			{
			  [tv setNeedsDisplayInRect:
			    [tv rectOfRow: i]];
			  notified = YES;
			  [_selectedRows removeObjectAtIndex: pos];
			  count--;
			}
		    }

		  if (   notified 
		      && (*_selectedRow < _oldRow)
		      && (*_selectedRow >= _currentRow))
		    {
		      if ([_selectedRows count] == 0)
			{
			  NSLog(@"error!");
			  *_selectedRow = -1;
			}
		      else
			{
			  *_selectedRow = 
			    [[_selectedRows objectAtIndex: 0]
			      intValue];
			}
		    }

		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	      else
		// we're reducing the selection
		{
		  BOOL notified = NO;

		  for (i = _oldRow; i < _currentRow; i++)
		    {
		      if ([_oldSelectedRows 
			    containsObject: 
			      [NSNumber numberWithInt: i]])
			{
			  // this row was in the old selection
			  // select it
			  if ([_selectedRows 
				containsObject:
				  [NSNumber numberWithInt: i]] == NO)
			    {
			      [tv setNeedsDisplayInRect:
				    [tv rectOfRow: i]];
			      _insertNumberInSelectionArray
				(_selectedRows,
				 [NSNumber numberWithInt: i]);
			      *_selectedRow = i;
			      notified = YES;
			    }
			  count++;
			}
		    }

		  if (notified == YES)
		    {
		      [nc postNotificationName: 
			    NSTableViewSelectionIsChangingNotification
			  object: tv];
		    }
		}
	    }
	  else if (oldDiff <= 0 && newDiff >= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		for (i = _oldRow; i < _originalRow; i++)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// select it
			if ([_selectedRows 
			      containsObject:
				[NSNumber numberWithInt: i]] == NO)
			  {
			    [tv setNeedsDisplayInRect:
				  [tv rectOfRow: i]];
			    _insertNumberInSelectionArray
			      (_selectedRows,
			       [NSNumber numberWithInt: i]);
			    *_selectedRow = i;
			    notified = YES;
			  }
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow + 1; i <= _currentRow; i++)
		  {
		    if (((pos = [_selectedRows 
				 indexOfObject: 
				   [NSNumber numberWithInt: i]])
			!= NSNotFound) && (count > 1))
		      {
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			notified = YES;
			[_selectedRows removeObjectAtIndex: pos];
			count--;
		      }
		  }
	      }

	      if (   notified 
		  && (*_selectedRow > _oldRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      NSLog(@"error!");
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}

	      if (notified == YES)
		{
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	  else if (oldDiff >= 0 && newDiff <= 0)
	    {
	      BOOL notified = NO;
	      
	      // we're reducing the selection
	      {
		for (i = _oldRow; i > _originalRow; i--)
		  {
		    if ([_oldSelectedRows 
			  containsObject: 
			    [NSNumber numberWithInt: i]])
		      {
			// this row was in the old selection
			// select it
			if ([_selectedRows 
			      containsObject:
				[NSNumber numberWithInt: i]] == NO)
			  {
			    [tv setNeedsDisplayInRect:
				  [tv rectOfRow: i]];
			    _insertNumberInSelectionArray
			      (_selectedRows,
			       [NSNumber numberWithInt: i]);
			    *_selectedRow = i;
			    notified = YES;
			  }
		      }
		  }
	      }
	      // then we're extending it
	      {
		for (i = _originalRow - 1; i >= _currentRow; i--)
		  {
		    if (((pos = [_selectedRows 
				 indexOfObject: 
				   [NSNumber numberWithInt: i]])
			!= NSNotFound) && (count > 1))
		      {
			[tv setNeedsDisplayInRect:
			      [tv rectOfRow: i]];
			notified = YES;
			[_selectedRows removeObjectAtIndex: pos];
			count--;
		      }
		  }
	      }

	      if (   notified 
		  && (*_selectedRow > _oldRow)
		  && (*_selectedRow <= _currentRow))
		{
		  if ([_selectedRows count] == 0)
		    {
		      NSLog(@"error!");
		      *_selectedRow = -1;
		    }
		  else
		    {
		      *_selectedRow = 
			[[_selectedRows objectAtIndex: 0]
			  intValue];
		    }
		}

	      if (notified == YES)
		{
		  [nc postNotificationName: 
			NSTableViewSelectionIsChangingNotification
		      object: tv];
		}
	    }
	}
    }
}

/*
static void
_selectRowsInRange (NSTableView *tv, id delegate, 
		    int startRow, int endRow, int clickedRow)
{
  int i;
  int tmp;
  int shift = 1;

  // Switch rows if in the wrong order
  if (startRow > endRow)
    {
      tmp = startRow;
      startRow = endRow;
      endRow = tmp;
      shift = 0;
    }

  for (i = startRow + shift; i < endRow + shift; i++)
    {
      if (i != clickedRow)
	{
	  if (delegate != nil)
	    {
	      if ([delegate tableView: tv   shouldSelectRow: i] == NO)
		continue;
	    }

	  [tv selectRow: i  byExtendingSelection: YES];
	  [tv setNeedsDisplayInRect: [tv rectOfRow: i]];
	}
    }
}

static void
_deselectRowsInRange (NSTableView *tv, int startRow, int endRow, 
		      int clickedRow)
{
  int i;
  int tmp;
  int shift = 1;

  if (startRow > endRow)
    {
      tmp = startRow;
      startRow = endRow;
      endRow = tmp;
      shift = 0;
    }

  for (i = startRow + shift; i < endRow + shift; i++)
    {
      if (i != clickedRow)
	{
	  [tv deselectRow: i];
	  [tv setNeedsDisplayInRect: [tv rectOfRow: i]];
	}
    }
}
*/

/*
 * The following function can work on columns or rows; 
 * passing the correct select/deselect function switches between one 
 * and the other.  Currently used only for rows, anyway.
 */

static void
_selectionChange (NSTableView *tv, id delegate, int numberOfRows, 
		  int clickedRow, 
		  int oldSelectedRow, int newSelectedRow, 
		  void (*deselectFunction)(NSTableView *, int, int, int), 
		  void (*selectFunction)(NSTableView *, id, int, int, int))
{
  int newDistance;
  int oldDistance;

  if (oldSelectedRow == newSelectedRow)
    return;

  /* Change coordinates - distance from the center of selection */
  oldDistance = oldSelectedRow - clickedRow;
  newDistance = newSelectedRow - clickedRow;

  /* If they have different signs, then we decompose it into 
     two problems with the same sign */
  if ((oldDistance * newDistance) < 0)
    {
      _selectionChange (tv, delegate, numberOfRows, clickedRow, 
			oldSelectedRow, clickedRow, deselectFunction, 
			selectFunction);
      _selectionChange (tv, delegate, numberOfRows, clickedRow, clickedRow, 
			newSelectedRow, deselectFunction, selectFunction);
      return;
    }

  /* Otherwise, take the modulus of the distances */
  if (oldDistance < 0)
    oldDistance = -oldDistance;

  if (newDistance < 0)
    newDistance = -newDistance;

  /* If the new selection is more wide, we need to select */
  if (newDistance > oldDistance)
    {
      selectFunction (tv, delegate, oldSelectedRow, newSelectedRow, 
		      clickedRow);
    }
  else /* Otherwise to deselect */
    {
      deselectFunction (tv, newSelectedRow, oldSelectedRow, clickedRow);
    }
}

static inline BOOL 
_isCellEditable (id delegate, NSArray *tableColumns, 
		 NSTableView *tableView, int row, int column)
{
  SEL selector = @selector(tableView:shouldEditTableColumn:row:);

  if ([delegate respondsToSelector: selector] == YES)
    {
      NSTableColumn *tb;
      
      tb = [tableColumns objectAtIndex: column];
      if ([delegate tableView: tableView  shouldEditTableColumn: tb 
		    row: row] == NO)
	{
	  return NO;
	}
    }
  
  return YES;
}

@interface GSTableCornerView : NSView
{}
@end

@implementation GSTableCornerView

- (void) drawRect: (NSRect)aRect
{
  NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, 
			   NSMinXEdge, NSMaxYEdge, 
			   NSMinYEdge};
  NSRectEdge down_sides[] = {NSMaxXEdge, NSMaxYEdge, 
			     NSMinXEdge, NSMinYEdge, 
			     NSMaxYEdge};
  float grays[] = {NSBlack, NSBlack, 
		   NSLightGray, NSLightGray, 
		   NSBlack};
  NSRect rect;
  NSGraphicsContext *ctxt = GSCurrentContext();

  if (GSWViewIsFlipped(ctxt) == YES)
    {
      rect = NSDrawTiledRects(_bounds, aRect,
			       down_sides, grays, 5);
    }
  else
    {
      rect = NSDrawTiledRects(_bounds, aRect,
			       up_sides, grays, 5);
    }

  DPSsetgray(ctxt, NSDarkGray);
  DPSrectfill(ctxt, NSMinX(rect), NSMinY(rect), 
	      NSWidth(rect), NSHeight(rect));


  /*
  NSRect rect = _bounds;

  NSDrawButton (rect, aRect);
  [[NSColor controlShadowColor] set];
  rect.size.width -= 4;
  rect.size.height -= 4;
  rect.origin.x += 2;
  rect.origin.y += 2;
  NSRectFill (rect);*/
}

@end

@interface NSTableView (TableViewInternalPrivate)
- (void) _setSelectingColumns: (BOOL)flag;
- (BOOL) _editNextEditableCellAfterRow: (int)row
				column: (int)column;
- (BOOL) _editPreviousEditableCellBeforeRow: (int)row
				     column: (int)column;
- (void) _autosaveTableColumns;
- (void) _autoloadTableColumns;
@end

@implementation NSTableView 

+ (void) initialize
{
  if (self == [NSTableView class])
    {
      [self setVersion: currentVersion];
      nc = [NSNotificationCenter defaultCenter];
    }
}

/*
 * Initializing/Releasing 
 */

- (id) initWithFrame: (NSRect)frameRect
{
  self = [super initWithFrame: frameRect];
  _drawsGrid        = YES;
  _rowHeight        = 16.0;
  _intercellSpacing = NSMakeSize (2.0, 3.0);
  ASSIGN (_gridColor, [NSColor gridColor]); 
  ASSIGN (_backgroundColor, [NSColor controlBackgroundColor]); 
  ASSIGN (_tableColumns, [NSMutableArray array]);
  ASSIGN (_selectedColumns, [NSMutableArray array]);
  ASSIGN (_selectedRows, [NSMutableArray array]);
  _allowsEmptySelection = YES;
  _allowsMultipleSelection = NO;
  _allowsColumnSelection = YES;
  _allowsColumnResizing = YES;
  _allowsColumnReordering = YES;
  _autoresizesAllColumnsToFit = NO;
  _editedColumn = -1;
  _editedRow = -1;
  _selectedColumn = -1;
  _selectedRow = -1;
  _highlightedTableColumn = nil;
  _headerView = [NSTableHeaderView new];
  [_headerView setFrameSize: NSMakeSize (frameRect.size.width, 22.0)];
  [_headerView setTableView: self];
  _cornerView = [GSTableCornerView new];
  [self tile];
  return self;
}

- (void) dealloc
{
  RELEASE (_gridColor);
  RELEASE (_backgroundColor);
  RELEASE (_tableColumns);
  RELEASE (_selectedColumns);
  RELEASE (_selectedRows);
  TEST_RELEASE (_headerView);
  TEST_RELEASE (_cornerView);
  if (_autosaveTableColumns == YES)
    {
      [nc removeObserver: self 
	  name: NSTableViewColumnDidResizeNotification
	  object: self];
    }
  TEST_RELEASE (_autosaveName);
  if (_numberOfColumns > 0)
    {
      NSZoneFree (NSDefaultMallocZone (), _columnOrigins);
    }
  [super dealloc];
}

- (BOOL) isFlipped
{
  return YES;
}

/*
 * Table Dimensions 
 */

- (int) numberOfColumns
{
  return _numberOfColumns;
}

- (int) numberOfRows
{
  return _numberOfRows;
}

/* 
 * Columns 
 */

- (void) addTableColumn: (NSTableColumn *)aColumn
{
  [aColumn setTableView: self];
  [_tableColumns addObject: aColumn];
  _numberOfColumns++;
  if (_numberOfColumns > 1)
    {
      _columnOrigins = NSZoneRealloc (NSDefaultMallocZone (), _columnOrigins,
				      (sizeof (float)) * _numberOfColumns);
    }
  else 
    {
      _columnOrigins = NSZoneMalloc (NSDefaultMallocZone (), sizeof (float));
    }      
  [self tile];
}

- (void) removeTableColumn: (NSTableColumn *)aColumn
{
  int columnIndex = [self columnWithIdentifier: [aColumn identifier]];
  int column, i, count;

  if (columnIndex == -1)
    {
      NSLog (@"Warning: Tried to remove not-existent column from table");
      return;
    }

  /* Remove selection on this column */
  [self deselectColumn: columnIndex];
  /* Shift column indexes on the right by one */
  if (_selectedColumn > columnIndex)
    {
      _selectedColumn--;
    }

  count = [_selectedColumns count];
  for (i = 0; i < count; i++)
    {
      column = [[_selectedColumns objectAtIndex: i] intValue];
      if (column > columnIndex)
	{
	  column--;
	  [_selectedColumns replaceObjectAtIndex: i 
			    withObject: [NSNumber numberWithInt: column]];
	}
    }

  /* Now really remove the column */

  /* NB: Set table view to nil before removing the column from the
     array, because removing it from the array could deallocate it !  */
  [aColumn setTableView: nil];
  [_tableColumns removeObject: aColumn];
  _numberOfColumns--;
  if (_numberOfColumns > 0)
    {
      _columnOrigins = NSZoneRealloc (NSDefaultMallocZone (), _columnOrigins,
				      (sizeof (float)) * _numberOfColumns);
    }
  else 
    {
      NSZoneFree (NSDefaultMallocZone (), _columnOrigins);
    }      
  [self tile];
}

- (void) moveColumn: (int)columnIndex toColumn: (int)newIndex
{
  /* The range of columns which need to be shifted, 
     extremes included */
  int minRange, maxRange;
  /* Amount of shift for these columns */
  int shift;
  /* Dummy variables for the loop */
  int i, count, column;
  NSDictionary *dict;

  if ((columnIndex < 0) || (columnIndex > (_numberOfColumns - 1)))
    {
      NSLog (@"Attempt to move column outside table");
      return;
    }
  if ((newIndex < 0) || (newIndex > (_numberOfColumns - 1)))
    {
      NSLog (@"Attempt to move column to outside table");
      return;
    }

  if (columnIndex == newIndex)
    return;

  if (columnIndex > newIndex)
    {
      minRange = newIndex;
      maxRange = columnIndex - 1;
      shift = +1;
    }
  else // columnIndex < newIndex
    {
      minRange = columnIndex + 1;
      maxRange = newIndex;
      shift = -1;
    }

  /* Rearrange selection */
  if (_selectedColumn == columnIndex)
    {
      _selectedColumn = newIndex;
    }
  else if ((_selectedColumn >= minRange) && (_selectedColumn <= maxRange)) 
    {
      _selectedColumn += shift;
    }

  count = [_selectedColumns count];
  for (i = 0; i < count; i++)
    {
      column = [[_selectedColumns objectAtIndex: i] intValue];

      if (column == columnIndex)
	{
	  [_selectedColumns replaceObjectAtIndex: i 
			    withObject: [NSNumber numberWithInt: newIndex]];
	  continue;
	}

      if ((column >= minRange) && (column <= maxRange))
	{
	  column += shift;
	  [_selectedColumns replaceObjectAtIndex: i 
			    withObject: [NSNumber numberWithInt: column]];
	  continue;
	}

      if ((column > columnIndex) && (column > newIndex))
	{
	  break;
	}
    }
  /* Now really move the column */
  if (columnIndex < newIndex)
    {
      [_tableColumns insertObject: [_tableColumns objectAtIndex: columnIndex]
		     atIndex: newIndex + 1];
      [_tableColumns removeObjectAtIndex: columnIndex];
    }
  else
    {
      [_tableColumns insertObject: [_tableColumns objectAtIndex: columnIndex]
		     atIndex: newIndex];
      [_tableColumns removeObjectAtIndex: columnIndex + 1];
    }
  /* Tile */
  [self tile];

  /* Post notification */
  dict =[NSDictionary dictionaryWithObjectsAndKeys: 
			[NSNumber numberWithInt: columnIndex], @"NSOldColumn", 
		      [NSNumber numberWithInt: newIndex], @"NSNewColumn", nil];
  [nc postNotificationName: NSTableViewColumnDidMoveNotification
      object: self
      userInfo: dict];

  [self _autosaveTableColumns];
}

- (NSArray *) tableColumns
{
  return AUTORELEASE ([_tableColumns mutableCopyWithZone: 
				       NSDefaultMallocZone ()]);
}

- (int) columnWithIdentifier: (id)anObject
{
  NSEnumerator	*enumerator = [_tableColumns objectEnumerator];
  NSTableColumn	*tb;
  int           return_value = 0;
  
  while ((tb = [enumerator nextObject]) != nil)
    {
      if ([[tb identifier] isEqual: anObject])
	return return_value;
      else
	return_value++;
    }
  return -1;
}

- (NSTableColumn *) tableColumnWithIdentifier:(id)anObject
{
  int indexOfColumn = [self columnWithIdentifier: anObject];

  if (indexOfColumn == -1)
    return nil;
  else 
    return [_tableColumns objectAtIndex: indexOfColumn];
}

/* 
 * Data Source 
 */

- (id) dataSource
{
  return _dataSource;
}

- (void) setDataSource: (id)anObject
{
  /* Used only for readability */
  const SEL sel_a = @selector (numberOfRowsInTableView:);
  const SEL sel_b = @selector (tableView:objectValueForTableColumn:row:);
  const SEL sel_c = @selector(tableView:setObjectValue:forTableColumn:row:);
  if ([anObject respondsToSelector: sel_a] == NO) 
    {
      [NSException 
	raise: NSInternalInconsistencyException 
	format: @"Data Source doesn't respond to numberOfRowsInTableView:"];
    }
  
  if ([anObject respondsToSelector: sel_b] == NO) 
    {
      [NSException raise: NSInternalInconsistencyException 
		   format: @"Data Source doesn't respond to "
		   @"tableView:objectValueForTableColumn:row:"];
    }
  
  
  _dataSource_editable = [anObject respondsToSelector: sel_c];

  /* We do *not* retain the dataSource, it's like a delegate */
  _dataSource = anObject;
  [self tile];
  [self reloadData];
}

/* 
 * Loading data 
 */

- (void) reloadData
{
  [self noteNumberOfRowsChanged];
  [self setNeedsDisplay: YES];
}

/* 
 * Target-action 
 */

- (void) setDoubleAction: (SEL)aSelector
{
  _doubleAction = aSelector;
}

- (SEL) doubleAction
{
  return _doubleAction;
}

- (void) setTarget:(id)anObject
{
  _target = anObject;
}

- (id) target
{
  return _target;
}

- (int) clickedColumn
{
  return _clickedColumn;
}

- (int) clickedRow
{
  return _clickedRow;
}

/*
 * The NSTableHeaderView calls this method when it receives a double click.
 */

- (void) _sendDoubleActionForColumn: (int)columnIndex
{
  _clickedColumn = columnIndex;
  _clickedRow = -1;
  [self sendAction: _doubleAction  to: _target]; 
}

/*
 * And this when it gets a simple click which turns out to be for 
 * selecting/deselecting a column.
 */

- (void) _selectColumn: (int)columnIndex
	     modifiers: (unsigned int)modifiers
{
  SEL selector;

  if (_allowsColumnSelection == NO)
    {
      return;
    }

  if ([self isColumnSelected: columnIndex] == YES)
    {
      if (([_selectedColumns count] == 1) && (_allowsEmptySelection == NO))
	{
	  return;
	}
	  
      selector = @selector (selectionShouldChangeInTableView:);
      if ([_delegate respondsToSelector: selector] == YES) 
	{
	  if ([_delegate selectionShouldChangeInTableView: self] == NO)
	    {
	      return;
	    }
	}

      if (_selectingColumns == NO)
	{
	  [self _setSelectingColumns: YES];
	}

      [self deselectColumn: columnIndex];
      //      [self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
      return;
    }
  else // column is not selected 
    {
      BOOL newSelection;
      
      if ((modifiers & (NSShiftKeyMask | NSAlternateKeyMask)) 
	  && _allowsMultipleSelection)
	{
	  newSelection = NO;
	}
      else
	{
	  newSelection = YES;
	}

      if (([_selectedColumns count] > 0) && (_allowsMultipleSelection == NO)
	  && (newSelection == NO))
	{
	  return;
	}
      
      selector = @selector (selectionShouldChangeInTableView:);
      if ([_delegate respondsToSelector: selector] == YES) 
	{
	  if ([_delegate selectionShouldChangeInTableView: self] == NO)
	    {
	      return;
	    }
	}

      selector = @selector (tableView:shouldSelectTableColumn:);
      if ([_delegate respondsToSelector: selector] == YES) 
	{
	  NSTableColumn *tc = [_tableColumns objectAtIndex: columnIndex];
	  if ([_delegate tableView: self  shouldSelectTableColumn: tc] == NO)
	    {
	      return;
	    }
	}

      if (_selectingColumns == NO)
	{
	  [self _setSelectingColumns: YES];
	}

      if (newSelection == YES)
	{
	  /* No shift or alternate key pressed: clear the old selection */
	  
	  /* Compute rect to redraw to clear the old selection */
	  /*
	  int column, i, count = [_selectedColumns count];
	  
	  for (i = 0; i < count; i++)
	    {
	      column = [[_selectedColumns objectAtIndex: i] intValue];
	      [self setNeedsDisplayInRect: [self rectOfColumn: column]];
	    }
	  */
	  /* Draw the new selection */
	  [self selectColumn: columnIndex  byExtendingSelection: NO];
	  //	  [self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
	}
      else /* Simply add to the old selection */
	{
	  [self selectColumn: columnIndex  byExtendingSelection: YES];
	  //	  [self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
	}
    }
}


/*
 *Configuration 
 */ 

- (void) setAllowsColumnReordering: (BOOL)flag
{
  _allowsColumnReordering = flag;
}

- (BOOL) allowsColumnReordering
{
  return _allowsColumnReordering;
}

- (void) setAllowsColumnResizing: (BOOL)flag
{
  _allowsColumnResizing = flag;
}

- (BOOL) allowsColumnResizing
{
  return _allowsColumnResizing;
}

- (void) setAllowsMultipleSelection: (BOOL)flag
{
  _allowsMultipleSelection = flag;
}

- (BOOL) allowsMultipleSelection
{
  return _allowsMultipleSelection;
}

- (void) setAllowsEmptySelection: (BOOL)flag
{
  _allowsEmptySelection = flag;
}

- (BOOL) allowsEmptySelection
{
  return _allowsEmptySelection;
}

- (void) setAllowsColumnSelection: (BOOL)flag
{
  _allowsColumnSelection = flag;
}

- (BOOL) allowsColumnSelection
{
  return _allowsColumnSelection;
}

/* 
 * Drawing Attributes 
 */

- (void) setIntercellSpacing: (NSSize)aSize
{
  _intercellSpacing = aSize;
  [self setNeedsDisplay: YES];
}

- (NSSize) intercellSpacing
{
  return _intercellSpacing;
}

- (void) setRowHeight: (float)rowHeight
{
  _rowHeight = rowHeight;
  [self tile];
}

- (float) rowHeight
{
  return _rowHeight;
}

- (void) setBackgroundColor: (NSColor *)aColor
{
  ASSIGN (_backgroundColor, aColor);
}

- (NSColor *) backgroundColor
{
  return _backgroundColor;
}

/*
 * Selecting Columns and Rows
 */
- (void) selectColumn: (int)columnIndex 
 byExtendingSelection: (BOOL)flag
{
  NSNumber *num  = [NSNumber numberWithInt: columnIndex];
  
  if (columnIndex < 0 || columnIndex > _numberOfColumns)
    {
      [NSException raise: NSInvalidArgumentException
		   format: @"Column index out of table in selectColumn"];
    }

  _selectingColumns = YES;

  if (flag == NO)
    {
      /* If the current selection is the one we want, just ends editing
       * This is not just a speed up, it prevents us from sending
       * a NSTableViewSelectionDidChangeNotification.
       * This behaviour is required by the specifications */
      if ([_selectedColumns count] == 1
	  && [_selectedColumns containsObject: num] == YES)
	{
	  /* Stop editing if any */
	  if (_textObject != nil)
	    {
	      [self validateEditing];
	      [self abortEditing];
	    }  
	  return;
	} 

      /* If _numberOfColumns == 1, we can skip trying to deselect the
	 only column - because we have been called to select it. */
      if (_numberOfColumns > 1)
	{
	  [_selectedColumns removeAllObjects];
	  [self setNeedsDisplay: YES];
	  if (_headerView)
	    {
	      [_headerView setNeedsDisplay: YES];
	    }
	  _selectedColumn = -1;
	}
    }
  else // flag == YES
    {
      if (_allowsMultipleSelection == NO)
	{
	  [NSException raise: NSInternalInconsistencyException
		       format: @"Can not extend selection in table view when multiple selection is disabled"];  
	}
    }

  /* Stop editing if any */
  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }

  /* Now select the column and post notification only if needed */ 
  if ([_selectedColumns containsObject: num] == NO)
    {
      _insertNumberInSelectionArray (_selectedColumns, num);
      _selectedColumn = columnIndex;

      [self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
      if (_headerView)
	{
	  [_headerView setNeedsDisplayInRect: 
			 [_headerView headerRectOfColumn: columnIndex]];
	}
      [nc postNotificationName: NSTableViewSelectionDidChangeNotification
	  object: self];
    }
  else /* Otherwise simply change the last selected column */
    {
      _selectedColumn = columnIndex;
    }
}

#if 0
- (void) internal_selectRow: (int)rowIndex
byExtendingSelection: (BOOL)flag
{
  NSNumber *num  = [NSNumber numberWithInt: rowIndex];

  if (rowIndex < 0 || rowIndex > _numberOfRows)
    {
      [NSException raise: NSInvalidArgumentException
		   format: @"Row index out of table in selectRow"];
    }

  _selectingColumns = NO;

  if (flag == NO)
    {
      /* If the current selection is the one we want, just ends editing
       * This is not just a speed up, it prevents us from sending
       * a NSTableViewSelectionDidChangeNotification.
       * This behaviour is required by the specifications */
      if ([_selectedRows count] == 1
	  && [_selectedRows containsObject: num] == YES)
	{
	  /* Stop editing if any */
	  if (_textObject != nil)
	    {
	      [self validateEditing];
	      [self abortEditing];
	    }
	  return;
	} 

      /* If _numberOfRows == 1, we can skip trying to deselect the
	 only row - because we have been called to select it. */
      if (_numberOfRows > 1)
	{
	  [_selectedRows removeAllObjects];
	  _selectedRow = -1;
	}
    }
  else // flag == YES
    {
      if (_allowsMultipleSelection == NO)
	{
	  [NSException raise: NSInternalInconsistencyException
		       format: @"Can not extend selection in table view when multiple selection is disabled"];  
	}
    }

  /* Stop editing if any */
  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }  

  /* Now select the row and post notification only if needed */ 
  if ([_selectedRows containsObject: num] == NO)
    {
      _insertNumberInSelectionArray (_selectedRows, num);
      _selectedRow = rowIndex;
      [nc postNotificationName: NSTableViewSelectionIsChangingNotification
	  object: self];
    }
  else /* Otherwise simply change the last selected row */
    {
      _selectedRow = rowIndex;
    }
}
#endif

- (void) selectRow: (int)rowIndex
byExtendingSelection: (BOOL)flag
{
  NSNumber *num  = [NSNumber numberWithInt: rowIndex];

  if (rowIndex < 0 || rowIndex > _numberOfRows)
    {
      [NSException raise: NSInvalidArgumentException
		   format: @"Row index out of table in selectRow"];
    }

  if (_selectingColumns)
    {
      _selectingColumns = NO;
      if (_headerView)
	{
	  [_headerView setNeedsDisplay: YES];
	}
    }

  if (flag == NO)
    {
      /* If the current selection is the one we want, just ends editing
       * This is not just a speed up, it prevents us from sending
       * a NSTableViewSelectionDidChangeNotification.
       * This behaviour is required by the specifications */
      if ([_selectedRows count] == 1
	  && [_selectedRows containsObject: num] == YES)
	{
	  /* Stop editing if any */
	  if (_textObject != nil)
	    {
	      [self validateEditing];
	      [self abortEditing];
	    }
	  return;
	} 

      /* If _numberOfRows == 1, we can skip trying to deselect the
	 only row - because we have been called to select it. */
      if (_numberOfRows > 1)
	{
	  [self setNeedsDisplay: YES];
	  [_selectedRows removeAllObjects];
	  _selectedRow = -1;
	}
    }
  else // flag == YES
    {
      if (_allowsMultipleSelection == NO)
	{
	  [NSException raise: NSInternalInconsistencyException
		       format: @"Can not extend selection in table view when multiple selection is disabled"];  
	}
    }

  /* Stop editing if any */
  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }  

  /* Now select the row and post notification only if needed */ 
  if ([_selectedRows containsObject: num] == NO)
    {
      _insertNumberInSelectionArray (_selectedRows, num);
      _selectedRow = rowIndex;
      [self setNeedsDisplayInRect: [self rectOfRow: rowIndex]];
      [nc postNotificationName: NSTableViewSelectionDidChangeNotification
	  object: self];
    }
  else /* Otherwise simply change the last selected row */
    {
      _selectedRow = rowIndex;
    }
}

- (void) deselectColumn: (int)columnIndex
{
  NSNumber *num  = [NSNumber numberWithInt: columnIndex];

  if ([_selectedColumns containsObject: num] == NO)
    {
      return;
    }

  /* Now by internal consistency we assume columnIndex is in fact a
     valid column index, since it was the index of a selected column */

  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }
  
  _selectingColumns = YES;

  [_selectedColumns removeObject: num];

  if (_selectedColumn == columnIndex)
    {
      int i, count = [_selectedColumns count]; 
      int nearestColumn = -1;
      int nearestColumnDistance = _numberOfColumns;
      int column, distance;
      for (i = 0; i < count; i++)
	{
	  column = [[_selectedColumns objectAtIndex: i] intValue];

	  distance = column - columnIndex;
	  if (distance < 0)
	    {
	      distance = -distance;
	    }

	  if (distance < nearestColumnDistance)
	    {
	      nearestColumn = column;
	    }
	}
      _selectedColumn = nearestColumn;
    }

  [self setNeedsDisplayInRect: [self rectOfColumn: columnIndex]];
  if (_headerView)
    {
      [_headerView setNeedsDisplayInRect: 
		     [_headerView headerRectOfColumn: columnIndex]];
    }

  [nc postNotificationName: NSTableViewSelectionDidChangeNotification
      object: self];
}

- (void) deselectRow: (int)rowIndex
{
  NSNumber *num  = [NSNumber numberWithInt: rowIndex];

  if ([_selectedRows containsObject: num] == NO)
    {
      return;
    }

  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }

  _selectingColumns = NO;

  [_selectedRows removeObject: num];

  if (_selectedRow == rowIndex)
    {
      int i, count = [_selectedRows count]; 
      int nearestRow = -1;
      int nearestRowDistance = _numberOfRows;
      int row, distance;
      for (i = 0; i < count; i++)
	{
	  row = [[_selectedRows objectAtIndex: i] intValue];

	  distance = row - rowIndex;
	  if (distance < 0)
	    {
	      distance = -distance;
	    }

	  if (distance < nearestRowDistance)
	    {
	      nearestRow = row;
	    }
	}
      _selectedRow = nearestRow;
    }

  [nc postNotificationName: NSTableViewSelectionDidChangeNotification
      object: self];
}

- (int) numberOfSelectedColumns
{
  return [_selectedColumns count];
}

- (int) numberOfSelectedRows
{
  return [_selectedRows count];
}

- (int) selectedColumn
{
  return _selectedColumn;
}

- (int) selectedRow
{
  return _selectedRow;
}

- (BOOL) isColumnSelected: (int)columnIndex
{
  NSNumber *num  = [NSNumber numberWithInt: columnIndex];
  return [_selectedColumns containsObject: num];
}

- (BOOL) isRowSelected: (int)rowIndex
{
  NSNumber *num  = [NSNumber numberWithInt: rowIndex];
  return [_selectedRows containsObject: num];
}

- (NSEnumerator *) selectedColumnEnumerator
{
  return [_selectedColumns objectEnumerator];
}

- (NSEnumerator *) selectedRowEnumerator
{
  return [_selectedRows objectEnumerator];
}

- (void) selectAll: (id) sender
{
  SEL selector; 

  if (_allowsMultipleSelection == NO)
    return;

  /* Ask the delegate if we can select all columns or rows */
  if (_selectingColumns == YES)
    {
      if ([_selectedColumns count] == _numberOfColumns)
	{
	  // Nothing to do !
	  return;
	}

      selector = @selector (tableView:shouldSelectTableColumn:);
      
      if ([_delegate respondsToSelector: selector] == YES) 
	{
	  NSEnumerator *enumerator = [_tableColumns objectEnumerator];
	  NSTableColumn *tb;
	  while ((tb = [enumerator nextObject]) != nil)
	    {
	      if ([_delegate tableView: self  
			     shouldSelectTableColumn: tb] == NO)
		{
		  return;
		}
	    }
	}
    }
  else // selecting rows
    {
      if ([_selectedRows count] == _numberOfRows)
	{
	  // Nothing to do !
	  return;
	}

      selector = @selector (tableView:shouldSelectRow:);
      
      if ([_delegate respondsToSelector: selector] == YES) 
	{
	  int row; 
      
	  for (row = 0; row < _numberOfRows; row++)
	    {
	      if ([_delegate tableView: self  shouldSelectRow: row] == NO)
		  return;
	    }
	}
    }

  /* Stop editing if any */
  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }  

  /* Do the real selection */
  if (_selectingColumns == YES)
    {
      int column;

      [_selectedColumns removeAllObjects];
      for (column = 0; column < _numberOfColumns; column++)
	{
	  NSNumber *num  = [NSNumber numberWithInt: column];
	  [_selectedColumns addObject: num];
	}
    }
  else // selecting rows
    {
      int row;

      [_selectedRows removeAllObjects];
      for (row = 0; row < _numberOfRows; row++)
	{
	  NSNumber *num  = [NSNumber numberWithInt: row];
	  [_selectedRows addObject: num];
	}
    }
  
  [nc postNotificationName: NSTableViewSelectionDidChangeNotification
      object: self];
}



- (void) deselectAll: (id) sender
{
  SEL selector; 

  if (_allowsEmptySelection == NO)
    return;

  selector = @selector (selectionShouldChangeInTableView:);
  if ([_delegate respondsToSelector: selector] == YES) 
    {
      if ([_delegate selectionShouldChangeInTableView: self] == NO)
	{
	  return;
	}
    }

  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }
	  
  if (([_selectedColumns count] > 0) || ([_selectedRows count] > 0))
    {
      [_selectedColumns removeAllObjects];
      [_selectedRows removeAllObjects];
      _selectedColumn = -1;
      _selectedRow = -1;
      _selectingColumns = NO;
      [nc postNotificationName: NSTableViewSelectionDidChangeNotification
	  object: self];
    }
  else
    {
      _selectedColumn = -1;
      _selectedRow = -1;
      _selectingColumns = NO;
    }
}

/* 
 * Grid Drawing attributes 
 */

- (void) setDrawsGrid: (BOOL)flag
{
  _drawsGrid = flag;
}

- (BOOL) drawsGrid
{
  return _drawsGrid;
}

- (void) setGridColor: (NSColor *)aColor
{
  ASSIGN (_gridColor, aColor);
}

- (NSColor *) gridColor
{
  return _gridColor;
}

/* 
 * Editing Cells 
 */

- (BOOL) abortEditing
{ 
  if (_textObject)
    {
      [_textObject setString: @""];
      [_editedCell endEditing: _textObject];
      RELEASE (_editedCell);
      [self setNeedsDisplayInRect: 
	      [self frameOfCellAtColumn: _editedColumn row: _editedRow]];
      _editedRow = -1;
      _editedColumn = -1;
      _editedCell = nil;
      _textObject = nil;
      return YES;
    }
  else
    return NO;
}

- (NSText *) currentEditor
{
  if (_textObject && ([_window firstResponder] == _textObject))
    return _textObject;
  else
    return nil;
}

- (void) validateEditing
{
  if (_textObject)
    {
      NSFormatter *formatter;
      NSString *string;
      id newObjectValue;
      BOOL validatedOK = YES;

      formatter = [_editedCell formatter];
      string = AUTORELEASE ([[_textObject text] copy]);

      if (formatter == nil)
	{
	  newObjectValue = string;
	}
      else
	{
	  NSString *error;
	  
	  if ([formatter getObjectValue: &newObjectValue 
			 forString: string 
			 errorDescription: &error] == NO)
	    {
	      if ([_delegate control: self 
			     didFailToFormatString: string 
			     errorDescription: error] == NO)
		{
		  validatedOK = NO;
		}
	      else
		{
		  newObjectValue = string;
		}
	    }
	}
      if (validatedOK == YES)
	{
	  [_editedCell setObjectValue: newObjectValue];
	  
	  if (_dataSource_editable)
	    {
	      NSTableColumn *tb;
	      
	      tb = [_tableColumns objectAtIndex: _editedColumn];
	      
	      [_dataSource tableView: self  setObjectValue: newObjectValue
			 forTableColumn: tb  row: _editedRow];
	    }
	}
    }
}

- (void) editColumn: (int) columnIndex 
		row: (int) rowIndex 
	  withEvent: (NSEvent *) theEvent 
	     select: (BOOL) flag
{
  NSText *t;
  NSTableColumn *tb;
  NSRect drawingRect;

  // We refuse to edit cells if the delegate can not accept results 
  // of editing.
  if (_dataSource_editable == NO)
    {
      return;
    }
  
  [self scrollRowToVisible: rowIndex];
  [self scrollColumnToVisible: columnIndex];

  if (rowIndex < 0 || rowIndex >= _numberOfRows 
      || columnIndex < 0 || columnIndex >= _numberOfColumns)
    {
      [NSException raise: NSInvalidArgumentException
		   format: @"Row/column out of index in edit"];
    }
  
  if (_textObject != nil)
    {
      [self validateEditing];
      [self abortEditing];
    }

  // Now (_textObject == nil)
  
  t = [_window fieldEditor: YES  forObject: self];
  
  if ([t superview] != nil)
    if ([t resignFirstResponder] == NO)
      return;
  
  _editedRow = rowIndex;
  _editedColumn = columnIndex;

  // Prepare the cell
  tb = [_tableColumns objectAtIndex: columnIndex];
  // NB: need to be released when no longer used
  _editedCell = [[tb dataCellForRow: rowIndex] copy];
  [_editedCell setEditable: YES];
  [_editedCell setObjectValue: [_dataSource tableView: self
					    objectValueForTableColumn: tb
					    row: rowIndex]];

  // We really want the correct background color!
  if ([_editedCell respondsToSelector: @selector(setBackgroundColor:)])
    {
      [(NSTextFieldCell *)_editedCell setBackgroundColor: _backgroundColor];
    }
  else
    {
      [t setBackgroundColor: _backgroundColor];
    }
  
  // But of course the delegate can mess it up if it wants
  if (_del_responds)
    {
      [_delegate tableView: self   willDisplayCell: _editedCell 
		 forTableColumn: tb   row: rowIndex];
    }

  _textObject = [_editedCell setUpFieldEditorAttributes: t];

  // Now edit it
  drawingRect = [self frameOfCellAtColumn: columnIndex
		      row: rowIndex];

  if (flag)
    {
      [_editedCell selectWithFrame: drawingRect
		   inView: self
		   editor: _textObject
		   delegate: self
		   start: 0
		   length: [[_editedCell stringValue] length]];
    }
  else
    {
      [_editedCell editWithFrame: drawingRect
		   inView: self
		   editor: _textObject
		   delegate: self
		   event: theEvent];
    }
  return;    
}

- (int) editedRow
{
  return _editedRow;  
}

- (int) editedColumn
{
  return _editedColumn;
}

- (void) _setSelectingColumns: (BOOL)flag
{
  if (flag == _selectingColumns)
    return;
  
  if (flag == NO)
    {
      /* Compute rect to redraw to clear the old column selection */
      int column, i, count = [_selectedColumns count];
      
      for (i = 0; i < count; i++)
	{
	  column = [[_selectedColumns objectAtIndex: i] intValue];
	  [self setNeedsDisplayInRect: [self rectOfColumn: column]];
	}	  
      [_selectedColumns removeAllObjects];
      _selectedColumn = -1;  
      _selectingColumns = NO;
    }
  else
    {
      /* Compute rect to redraw to clear the old row selection */
      int row, i, count = [_selectedRows count];
      
      for (i = 0; i < count; i++)
	{
	  row = [[_selectedRows objectAtIndex: i] intValue];
	  [self setNeedsDisplayInRect: [self rectOfRow: row]];
	}	  
      [_selectedRows removeAllObjects];
      _selectedRow = -1;  
      _selectingColumns = YES;
    }
}

- (void) mouseDown: (NSEvent *)theEvent
{
  NSPoint location = [theEvent locationInWindow];
  NSTableColumn *tb;
  int clickCount;
  BOOL shouldEdit;
  int _originalRow;
  int _oldRow = -1;
  int _currentRow = -1;

  //
  // Pathological case -- ignore mouse down
  //
  if ((_numberOfRows == 0) || (_numberOfColumns == 0))
    {
      [super mouseDown: theEvent];
      return; 
    }
  
  clickCount = [theEvent clickCount];

  if (clickCount > 2)
    return;

  // Determine row and column which were clicked
  location = [self convertPoint: location  fromView: nil];
  _clickedRow  = [self rowAtPoint: location];
  _clickedColumn = [self columnAtPoint: location];
  _originalRow = _clickedRow;

  // Selection
  if (clickCount == 1)
    {
      SEL selector;
      unsigned int modifiers = [theEvent modifierFlags];
      BOOL startedPeriodicEvents = NO;
      unsigned int eventMask = (NSLeftMouseUpMask 
				| NSLeftMouseDownMask
				| NSLeftMouseDraggedMask 
				| NSPeriodicMask);
      unsigned selectionMode;
      NSPoint mouseLocationWin;
      NSDate *distantFuture = [NSDate distantFuture];
      NSEvent *lastEvent;
      NSSet *_oldSelectedRows;
      id delegateIfItTakesPart;
      BOOL mouseUp = NO;
      BOOL done = NO;
      NSRect visibleRect = [self convertRect: [self visibleRect]
				 toView: nil];
      float minYVisible = NSMinY (visibleRect);
      float maxYVisible = NSMaxY (visibleRect);

      /* We have three zones of speed. 
	 0   -  50 pixels: period 0.2  <zone 1>
	 50  - 100 pixels: period 0.1  <zone 2>
	 100 - 150 pixels: period 0.01 <zone 3> */
      float oldPeriod = 0;
      inline float computePeriod ()
	{
	  float distance = 0;
	  
	  if (mouseLocationWin.y < minYVisible) 
	    {
	      distance = minYVisible - mouseLocationWin.y; 
	    }
	  else if (mouseLocationWin.y > maxYVisible)
	    {
	      distance = mouseLocationWin.y - maxYVisible;
	    }
	  
	  if (distance < 50)
	    return 0.2;
	  else if (distance < 100)
	    return 0.1;
	  else 
	    return 0.01;
	}
      
      selectionMode = 0;
      if (_allowsMultipleSelection == YES)
	{
	  selectionMode |= ALLOWS_MULTIPLE;
	}

      if (_allowsEmptySelection == YES)
	{
	  selectionMode |= ALLOWS_EMPTY;
	}
      
      if (modifiers & NSShiftKeyMask)
	{
	  selectionMode |= SHIFT_DOWN;
	}
      
      if ([_selectedRows containsObject: 
			   [NSNumber numberWithInt: _clickedRow]] == NO)
	{
	  selectionMode |= ADDING_ROW;
	}

      if (modifiers & NSControlKeyMask)
	{
	  selectionMode |= CONTROL_DOWN;
	  if (_allowsMultipleSelection == YES)
	    {
	      _originalRow = _selectedRow;
	      selectionMode |= SHIFT_DOWN;
	      selectionMode |= ADDING_ROW;
	    }
	}
      
      // does the delegate take part in the selection
      selector = @selector (tableView:shouldSelectRow:);
      if ([_delegate respondsToSelector: selector] == YES)
	{
	  delegateIfItTakesPart = _delegate;
	}
      else
	{
	  delegateIfItTakesPart = nil;
	}

      // is the delegate ok for a new selection ?
      selector = @selector (selectionShouldChangeInTableView:);
      if ([_delegate respondsToSelector: selector] == YES) 
	{
	  if ([_delegate selectionShouldChangeInTableView: self] == NO)
	    {
	      return;
	    }
	}

      // if we are in column selection mode, stop it
      if (_selectingColumns == YES)
	{
	  if (_headerView)
	    {
	      int i;
	      for (i = 0; i < _numberOfColumns; i++)
		{
		  if ([self isColumnSelected: i])
		    [_headerView setNeedsDisplayInRect: 
				   [_headerView headerRectOfColumn: i]];
		}
	    }
	  [self _setSelectingColumns: NO];
	}

      // let's sort the _selectedRows
      _oldSelectedRows = [[NSSet alloc] 
			   initWithArray: _selectedRows];

      lastEvent = theEvent;
      while (done != YES)
	{
	  switch ([lastEvent type])
	    {
	    case NSLeftMouseUp:
	      mouseLocationWin = [lastEvent locationInWindow]; 
	      if ((mouseLocationWin.y > minYVisible) 
		  && (mouseLocationWin.y < maxYVisible))
		// mouse dragged within table
		{
		  NSPoint mouseLocationView;
		  
		  if (startedPeriodicEvents == YES)
		    {
		      [NSEvent stopPeriodicEvents];
		      startedPeriodicEvents = NO;
		    }
		  mouseLocationView = [self convertPoint: 
					      mouseLocationWin 
					    fromView: nil];
		  mouseLocationView.x = _bounds.origin.x;
		  _oldRow = _currentRow;
		  _currentRow = [self rowAtPoint: mouseLocationView];
		  if (_oldRow == _currentRow)
		    {
		      // the row hasn't changed, nothing to do
		    }
		  else
		    {
		      // we should now compute the new selection
		      
		      computeNewSelection(self,
					  delegateIfItTakesPart,
					  _oldSelectedRows, 
					  _selectedRows,
					  _originalRow,
					  _oldRow,
					  _currentRow,
					  &_selectedRow,
					  selectionMode);
		      [self displayIfNeeded];
		    }
		}
	      else
		// Mouse dragged out of the table
		{
		  // we don't care
		}
	      done = YES;
	      break;
	    case NSLeftMouseDown:
	    case NSLeftMouseDragged:
	      mouseLocationWin = [lastEvent locationInWindow]; 
	      if ((mouseLocationWin.y > minYVisible) 
		  && (mouseLocationWin.y < maxYVisible))
		// mouse dragged within table
		{
		  NSPoint mouseLocationView;
		  
		  if (startedPeriodicEvents == YES)
		    {
		      [NSEvent stopPeriodicEvents];
		      startedPeriodicEvents = NO;
		    }
		  mouseLocationView = [self convertPoint: 
					      mouseLocationWin 
					    fromView: nil];
		  mouseLocationView.x = _bounds.origin.x;
		  _oldRow = _currentRow;
		  _currentRow = [self rowAtPoint: mouseLocationView];

		  if (_oldRow == _currentRow)
		    {
		      // the row hasn't changed, nothing to do
		    }
		  else
		    {
		      // we should now compute the new selection
		      
		      computeNewSelection(self,
					  delegateIfItTakesPart,
					  _oldSelectedRows, 
					  _selectedRows,
					  _originalRow,
					  _oldRow,
					  _currentRow,
					  &_selectedRow,
					  selectionMode);
		      [self displayIfNeeded];
		      //		      [_window flushWindow];		      
		    }
		}
	      else
		// Mouse dragged out of the table
		{
		  if (startedPeriodicEvents == YES)
		    {
		      /* Check - if the mouse did not change zone, 
			 we do nothing */
		      if (computePeriod () == oldPeriod)
			break;

		      [NSEvent stopPeriodicEvents];
		    }
		  /* Start periodic events */
		  oldPeriod = computePeriod ();
			
		  [NSEvent startPeriodicEventsAfterDelay: 0
			   withPeriod: oldPeriod];
		  startedPeriodicEvents = YES;
		  if (mouseLocationWin.y <= minYVisible) 
		    mouseUp = NO;
		  else
		    mouseUp = YES;
		}
	      break;
	    case NSPeriodic:
	      if (mouseUp == NO) // mouse below the table
		{
		  if (_currentRow >= _numberOfRows - 1)
		    {
		      // last row already selected, nothing to do
		    }
		  else
		    {
		      _oldRow = _currentRow;
		      _currentRow++;
		      [self scrollRowToVisible: _currentRow];
		      // we should now compute the new selection
		      computeNewSelection(self,
					  delegateIfItTakesPart,
					  _oldSelectedRows, 
					  _selectedRows,
					  _originalRow,
					  _oldRow,
					  _currentRow,
					  &_selectedRow,
					  selectionMode);

		      [self displayIfNeeded];
		    }
		}
	      else /* mouse above the table */
		{
		  if (_currentRow <= 0)
		    {
		      // first row already selected, nothing to do
		    }
		  else
		    {
		      _oldRow = _currentRow;
		      _currentRow--;
		      [self scrollRowToVisible: _currentRow];
		      // we should now compute the new selection
		      computeNewSelection(self,
					  delegateIfItTakesPart,
					  _oldSelectedRows, 
					  _selectedRows,
					  _originalRow,
					  _oldRow,
					  _currentRow,
					  &_selectedRow,
					  selectionMode);

		      [self displayIfNeeded];
		    }
		}
	      break;
	    default:
	      break;
	    }
	  if (done == NO)
	    {
	      lastEvent = [NSApp nextEventMatchingMask: eventMask 
				 untilDate: distantFuture
				 inMode: NSEventTrackingRunLoopMode 
				 dequeue: YES]; 
	    }
	}
	    
      if (startedPeriodicEvents == YES)
	[NSEvent stopPeriodicEvents];

      [_selectedRows sortUsingSelector: @selector(compare:)];

      if ([_selectedRows 
	    isEqualToArray: 
	      [[_oldSelectedRows allObjects] 
		sortedArrayUsingSelector: @selector(compare:)]] == NO)
	{
	  [nc postNotificationName: 
		NSTableViewSelectionDidChangeNotification
	      object: self];
	}	    
      return;
    }

  // Double-click events

  if ([self isRowSelected: _clickedRow] == NO)
    return;

  tb = [_tableColumns objectAtIndex: _clickedColumn];

  shouldEdit = YES;

  if ([tb isEditable] == NO)
    {
      shouldEdit = NO;
    }
  else if ([_delegate respondsToSelector: 
			@selector(tableView:shouldEditTableColumn:row:)])
    {
      if ([_delegate tableView: self shouldEditTableColumn: tb 
		     row: _clickedRow] == NO)
	{
	  shouldEdit = NO;
	}
    }
  
  if (shouldEdit == NO)
    {
      // Send double-action but don't edit
      [self sendAction: _doubleAction to: _target];
      return;
    }

  // It is OK to edit column.  Go on, do it.
  [self editColumn: _clickedColumn  row: _clickedRow
	withEvent: theEvent  select: NO];
}

/*
- (void) mouseDown2: (NSEvent *)theEvent
{
  NSPoint location = [theEvent locationInWindow];
  NSTableColumn *tb;
  int clickCount;
  BOOL shouldEdit;

  //
  // Pathological case -- ignore mouse down
  //
  if ((_numberOfRows == 0) || (_numberOfColumns == 0))
    {
      [super mouseDown: theEvent];
      return; 
    }
  
  clickCount = [theEvent clickCount];

  if (clickCount > 2)
    return;

  // Determine row and column which were clicked
  location = [self convertPoint: location  fromView: nil];
  _clickedRow = [self rowAtPoint: location];
  _clickedColumn = [self columnAtPoint: location];

  // Selection
  if (clickCount == 1)
    {
      SEL selector;
      unsigned int modifiers;
      modifiers = [theEvent modifierFlags];

      // Unselect a selected row if the shift key is pressed
      if ([self isRowSelected: _clickedRow] == YES
	  && (modifiers & NSShiftKeyMask))
	{
	  if (([_selectedRows count] == 1) && (_allowsEmptySelection == NO))
	    return;

	  selector = @selector (selectionShouldChangeInTableView:);
	  if ([_delegate respondsToSelector: selector] == YES) 
	    {
	      if ([_delegate selectionShouldChangeInTableView: self] == NO)
		{
		  return;
		}
	    }

	  if (_selectingColumns == YES)
	    {
	      [self _setSelectingColumns: NO];
	    }
	 
	  [self deselectRow: _clickedRow];
	  [self setNeedsDisplayInRect: [self rectOfRow: _clickedRow]];
	  return;
	}
      else // row is not selected 
	{
	  BOOL newSelection;

	  if ((modifiers & (NSShiftKeyMask | NSAlternateKeyMask)) 
	      && _allowsMultipleSelection)
	    newSelection = NO;
	  else
	    newSelection = YES;

	  selector = @selector (selectionShouldChangeInTableView:);
	  if ([_delegate respondsToSelector: selector] == YES) 
	    {
	      if ([_delegate selectionShouldChangeInTableView: self] == NO)
		{
		  return;
		}
	    }
	  
	  selector = @selector (tableView:shouldSelectRow:);
	  if ([_delegate respondsToSelector: selector] == YES) 
	    {
	      if ([_delegate tableView: self 
			     shouldSelectRow: _clickedRow] == NO)
		{
		  return;
		}
	    }

	  if (_selectingColumns == YES)
	    {
	      [self _setSelectingColumns: NO];
	    }

	  if (newSelection == YES)
	    {
	      // No shift or alternate key pressed: clear the old selection
	      
	      // Compute rect to redraw to clear the old selection
	      int row, i, count = [_selectedRows count];
	      
	      for (i = 0; i < count; i++)
		{
		  row = [[_selectedRows objectAtIndex: i] intValue];
		  [self setNeedsDisplayInRect: [self rectOfRow: row]];
		}

	      // Draw the new selection
	      [self selectRow: _clickedRow  byExtendingSelection: NO];
	      [self setNeedsDisplayInRect: [self rectOfRow: _clickedRow]];
	    }
	  else // Simply add to the old selection
	    {
	      [self selectRow: _clickedRow  byExtendingSelection: YES];
	      [self setNeedsDisplayInRect: [self rectOfRow: _clickedRow]];
	    }

	  if (_allowsMultipleSelection == NO)
	    {
	      return;
	    }
	  
	  // else, we track the mouse to allow extending selection to
	  // areas by dragging the mouse
	  
	  // Draw immediately because we are going to enter an event
	  // loop to track the mouse
	  [_window flushWindow];
	  
	  // We track the cursor and highlight according to the cursor
	  // position.  When the cursor gets out (up or down) of the
	  // table, we start periodic events and scroll periodically
	  // the table enlarging or reducing selection.
	  {
	    BOOL startedPeriodicEvents = NO;
	    unsigned int eventMask = (NSLeftMouseUpMask 
				      | NSLeftMouseDraggedMask 
				      | NSPeriodicMask);
	    NSEvent *lastEvent;
	    BOOL done = NO;
	    NSPoint mouseLocationWin;
	    NSDate *distantFuture = [NSDate distantFuture];
	    int lastSelectedRow = _clickedRow;
	    NSRect visibleRect = [self convertRect: [self visibleRect]
				       toView: nil];
	    float minYVisible = NSMinY (visibleRect);
	    float maxYVisible = NSMaxY (visibleRect);
	    BOOL delegateTakesPart;
	    BOOL mouseUp = NO;
	    // We have three zones of speed. 
	    // 0   -  50 pixels: period 0.2  <zone 1>
	    // 50  - 100 pixels: period 0.1  <zone 2>
	    // 100 - 150 pixels: period 0.01 <zone 3>
	    float oldPeriod = 0;
	    inline float computePeriod ()
	      {
		float distance = 0;
		
		if (mouseLocationWin.y < minYVisible) 
		  {
		    distance = minYVisible - mouseLocationWin.y; 
		  }
		else if (mouseLocationWin.y > maxYVisible)
		  {
		    distance = mouseLocationWin.y - maxYVisible;
		  }
		
		if (distance < 50)
		  return 0.2;
		else if (distance < 100)
		  return 0.1;
		else 
		  return 0.01;
	      }

	    selector = @selector (tableView:shouldSelectRow:);
	    delegateTakesPart = [_delegate respondsToSelector: selector];
	    
	    while (done != YES)
	      {
		lastEvent = [NSApp nextEventMatchingMask: eventMask 
				   untilDate: distantFuture
				   inMode: NSEventTrackingRunLoopMode 
				   dequeue: YES]; 

		switch ([lastEvent type])
		  {
		  case NSLeftMouseUp:
		    done = YES;
		    break;
		  case NSLeftMouseDragged:
		    mouseLocationWin = [lastEvent locationInWindow]; 
		    if ((mouseLocationWin.y > minYVisible) 
			&& (mouseLocationWin.y < maxYVisible))
		      {
			NSPoint mouseLocationView;
			int rowAtPoint;
			
			if (startedPeriodicEvents == YES)
			  {
			    [NSEvent stopPeriodicEvents];
			    startedPeriodicEvents = NO;
			  }
			mouseLocationView = [self convertPoint: 
						    mouseLocationWin 
						  fromView: nil];
			mouseLocationView.x = _bounds.origin.x;
			rowAtPoint = [self rowAtPoint: mouseLocationView];
			
			if (delegateTakesPart == YES)
			  {
			    _selectionChange (self, _delegate, 
					      _numberOfRows, _clickedRow, 
					      lastSelectedRow, rowAtPoint, 
					      _deselectRowsInRange, 
					      _selectRowsInRange);
			  }
			else
			  {
			    _selectionChange (self, nil,
					      _numberOfRows, _clickedRow, 
					      lastSelectedRow, rowAtPoint, 
					      _deselectRowsInRange, 
					      _selectRowsInRange);
			  }
			lastSelectedRow = rowAtPoint;
			[_window flushWindow];
			[nc postNotificationName: 
			      NSTableViewSelectionIsChangingNotification
			    object: self];
		      }
		    else // Mouse dragged out of the table
		      {
			if (startedPeriodicEvents == YES)
			  {
			    // Check - if the mouse did not change zone, 
			    // we do nothing
			    if (computePeriod () == oldPeriod)
			      break;

			    [NSEvent stopPeriodicEvents];
			  }
			// Start periodic events
			oldPeriod = computePeriod ();
			
			[NSEvent startPeriodicEventsAfterDelay: 0
				 withPeriod: oldPeriod];
			startedPeriodicEvents = YES;
			if (mouseLocationWin.y <= minYVisible) 
			  mouseUp = NO;
			else
			  mouseUp = YES;
		      }
		    break;
		  case NSPeriodic:
		    if (mouseUp == NO) // mouse below the table
		      {
			if (lastSelectedRow < _clickedRow)
			  {
			    [self deselectRow: lastSelectedRow];
			    [self setNeedsDisplayInRect: 
				    [self rectOfRow: lastSelectedRow]];
			    [self scrollRowToVisible: lastSelectedRow];
			    [_window flushWindow];
			    lastSelectedRow++;
			  }
			else
			  {
			    if ((lastSelectedRow + 1) < _numberOfRows)
			      {
				lastSelectedRow++;
				if ((delegateTakesPart == YES) &&
				    ([_delegate 
				       tableView: self 
				       shouldSelectRow: lastSelectedRow] 
				     == NO))
				  {
				    break;
				  }
				[self selectRow: lastSelectedRow 
				      byExtendingSelection: YES];
				[self setNeedsDisplayInRect: 
					[self rectOfRow: lastSelectedRow]];
				[self scrollRowToVisible: lastSelectedRow];
				[_window flushWindow];
			      }
			  }
		      }
		    else // mouse above the table
		      {
			if (lastSelectedRow <= _clickedRow)
			  {
			    if ((lastSelectedRow - 1) >= 0)
			      {
				lastSelectedRow--;
				if ((delegateTakesPart == YES) &&
				    ([_delegate 
				       tableView: self 
				       shouldSelectRow: lastSelectedRow] 
				     == NO))
				  {
				    break;
				  }
				[self selectRow: lastSelectedRow 
				      byExtendingSelection: YES];
				[self setNeedsDisplayInRect: 
					[self rectOfRow: lastSelectedRow]];
				[self scrollRowToVisible: lastSelectedRow];
				[_window flushWindow];
			      }
			  }
			else
			  {
			    [self deselectRow: lastSelectedRow];
			    [self setNeedsDisplayInRect: 
				    [self rectOfRow: lastSelectedRow]];
			    [self scrollRowToVisible: lastSelectedRow];
			    [_window flushWindow];
			    lastSelectedRow--;
			  }
		      }
		    [nc postNotificationName: 
			  NSTableViewSelectionIsChangingNotification
			object: self];
		    break;
		  default:
		    break;
		  }

	      }
	    
	    if (startedPeriodicEvents == YES)
	      [NSEvent stopPeriodicEvents];

	    [nc postNotificationName: 
		  NSTableViewSelectionDidChangeNotification
		object: self];
	    
	    return;
	  }
	}
    }

  // Double-click events

  if ([self isRowSelected: _clickedRow] == NO)
    return;

  tb = [_tableColumns objectAtIndex: _clickedColumn];

  shouldEdit = YES;

  if ([tb isEditable] == NO)
    {
      shouldEdit = NO;
    }
  else if ([_delegate respondsToSelector: 
			@selector(tableView:shouldEditTableColumn:row:)])
    {
      if ([_delegate tableView: self shouldEditTableColumn: tb 
		     row: _clickedRow] == NO)
	{
	  shouldEdit = NO;
	}
    }
  
  if (shouldEdit == NO)
    {
      // Send double-action but don't edit
      [self sendAction: _doubleAction to: _target];
      return;
    }

  // It is OK to edit column.  Go on, do it.
  [self editColumn: _clickedColumn  row: _clickedRow
	withEvent: theEvent  select: NO];
}
*/

/* 
 * Auxiliary Components 
 */

- (void) setHeaderView: (NSTableHeaderView*)aHeaderView
{
  if (_super_view != nil)
    {
      /* Changing the headerView after the table has been linked to a
	 scrollview is not yet supported - the doc is not clear
	 whether it should be supported at all.  If it is, perhaps
	 it's going to be done through a private method between the
	 tableview and the scrollview. */
      NSLog (@"setHeaderView: called after NSTableView has been put "
	     @"in the view tree!"); 
    }
  [_headerView setTableView: nil];
  ASSIGN (_headerView, aHeaderView);
  [_headerView setTableView: self];
  [self tile];
}

- (NSTableHeaderView*) headerView
{
  return _headerView;
}

- (void) setCornerView: (NSView*)aView
{
  ASSIGN (_cornerView, aView);
  [self tile];
}

- (NSView*) cornerView
{
  return _cornerView;
}

/* 
 * Layout 
 */

- (NSRect) rectOfColumn: (int)columnIndex
{
  NSRect rect;

  if (columnIndex < 0)
    {
      [NSException 
	raise: NSInternalInconsistencyException 
	format: @"ColumnIndex < 0 in [NSTableView -rectOfColumn:]"];
    }
  if (columnIndex >= _numberOfColumns)
    {
      [NSException 
	raise: NSInternalInconsistencyException 
	format: @"ColumnIndex => _numberOfColumns in [NSTableView -rectOfColumn:]"];
    }

  rect.origin.x = _columnOrigins[columnIndex];
  rect.origin.y = _bounds.origin.y;
  rect.size.width = [[_tableColumns objectAtIndex: columnIndex] width];
  rect.size.height = _bounds.size.height;
  return rect;
}

- (NSRect) rectOfRow: (int)rowIndex
{
  NSRect rect;

  if (rowIndex < 0)
    {
      [NSException 
	raise: NSInternalInconsistencyException 
	format: @"RowIndex < 0 in [NSTableView -rectOfRow:]"];
    }
  if (rowIndex >= _numberOfRows)
    {
      [NSException 
	raise: NSInternalInconsistencyException 
	format: @"RowIndex => _numberOfRows in [NSTableView -rectOfRow:]"];
    }
  rect.origin.x = _bounds.origin.x;
  rect.origin.y = _bounds.origin.y + (_rowHeight * rowIndex);
  rect.size.width = _bounds.size.width;
  rect.size.height = _rowHeight;
  return rect;
}

- (NSRange) columnsInRect: (NSRect)aRect
{
  NSRange range;

  range.location = [self columnAtPoint: aRect.origin];
  range.length = [self columnAtPoint: 
			 NSMakePoint (NSMaxX (aRect), _bounds.origin.y)];
  range.length -= range.location;
  range.length += 1;
  return range;
}

- (NSRange) rowsInRect: (NSRect)aRect
{
  NSRange range;

  range.location = [self rowAtPoint: aRect.origin];
  range.length = [self rowAtPoint: 
			 NSMakePoint (_bounds.origin.x, NSMaxY (aRect))];
  range.length -= range.location;
  range.length += 1;
  return range;
}

- (int) columnAtPoint: (NSPoint)aPoint
{
  if ((NSMouseInRect (aPoint, _bounds, YES)) == NO)
    {
      return -1;
    }
  else
    {
      int i = 0;
      
      while ((aPoint.x >= _columnOrigins[i]) && (i < _numberOfColumns))
	{
	  i++;
	}
      return i - 1;
    }
}

- (int) rowAtPoint: (NSPoint)aPoint
{
  /* NB: Y coordinate system is flipped in NSTableView */
  if ((NSMouseInRect (aPoint, _bounds, YES)) == NO)
    {
      return -1;
    }
  else
    {
      int return_value;

      aPoint.y -= _bounds.origin.y;
      return_value = (int) (aPoint.y / _rowHeight);
      /* This could happen if point lies on the grid line below the last row */
      if (return_value == _numberOfRows)
	{
	  return_value--;
	}
      return return_value;
    }
}

- (NSRect) frameOfCellAtColumn: (int)columnIndex 
			   row: (int)rowIndex
{
  NSRect frameRect;

  if ((columnIndex < 0) 
      || (rowIndex < 0)
      || (columnIndex > (_numberOfColumns - 1))
      || (rowIndex > (_numberOfRows - 1)))
    return NSZeroRect;
      
  frameRect.origin.y  = _bounds.origin.y + (rowIndex * _rowHeight);
  frameRect.origin.y += _intercellSpacing.height / 2;
  frameRect.size.height = _rowHeight - _intercellSpacing.height;

  frameRect.origin.x = _columnOrigins[columnIndex];
  frameRect.origin.x  += _intercellSpacing.width / 2;
  frameRect.size.width = [[_tableColumns objectAtIndex: columnIndex] width];
  frameRect.size.width -= _intercellSpacing.width;

  // We add some space to separate the cell from the grid
  if (_drawsGrid)
    {
      frameRect.size.width -= 4;
      frameRect.origin.x += 2;
    }

  // Safety check
  if (frameRect.size.width < 0)
    frameRect.size.width = 0;
  
  return frameRect;
}

- (void) setAutoresizesAllColumnsToFit: (BOOL)flag
{
  _autoresizesAllColumnsToFit = flag;
}

- (BOOL) autoresizesAllColumnsToFit
{
  return _autoresizesAllColumnsToFit;
}

- (void) sizeLastColumnToFit
{
  if ((_super_view != nil) && (_numberOfColumns > 0))
    {
      float excess_width;
      float last_column_width;
      NSTableColumn *lastColumn;

      lastColumn = [_tableColumns objectAtIndex: (_numberOfColumns - 1)];
      if ([lastColumn isResizable] == NO)
	return;
      excess_width = NSMaxX ([self convertRect: [_super_view bounds] 
				      fromView: _super_view]);
      excess_width -= NSMaxX (_bounds);
      last_column_width = [lastColumn width];
      last_column_width += excess_width;
      _tilingDisabled = YES;
      if (last_column_width < [lastColumn minWidth])
	{
	  [lastColumn setWidth: [lastColumn minWidth]];
	}
      else if (last_column_width > [lastColumn maxWidth])
	{
	  [lastColumn setWidth: [lastColumn maxWidth]];
	}
      else
	{
	  [lastColumn setWidth: last_column_width];
	}
      _tilingDisabled = NO;
      [self tile];
    }
}

- (void) setFrame: (NSRect) aRect
{
  [super setFrame: aRect];
}

- (void) sizeToFit
{
  NSTableColumn *tb;
  int i, j;
  float remainingWidth;
  float availableWidth;
  columnSorting *columnInfo;
  float *currentWidth;
  float *maxWidth;
  float *minWidth;
  BOOL *isResizable;
  int numberOfCurrentColumns = 0;
  float previousPoint;
  float nextPoint;
  float difference;
  float toAddToCurrentColumns;


  if ((_super_view == nil) || (_numberOfColumns == 0))
    return;

  columnInfo = NSZoneMalloc(NSDefaultMallocZone(),
			    sizeof(columnSorting) * 2 
			    * _numberOfColumns);
  currentWidth = NSZoneMalloc(NSDefaultMallocZone(),
			      sizeof(float) * _numberOfColumns);
  maxWidth = NSZoneMalloc(NSDefaultMallocZone(),
			  sizeof(float) * _numberOfColumns);
  minWidth = NSZoneMalloc(NSDefaultMallocZone(),
			  sizeof(float) * _numberOfColumns);
  isResizable = NSZoneMalloc(NSDefaultMallocZone(),
			     sizeof(BOOL) * _numberOfColumns);

  availableWidth = NSMaxX([self convertRect: [_super_view bounds] 
				fromView: _super_view]);
  remainingWidth = availableWidth;

  /*
   *  We store the minWidth and the maxWidth of every column
   *  because we'll use those values *a lot*
   *  At the same time we set every column to its mininum width
   */
  for (i = 0; i < _numberOfColumns; i++)
    {
      tb = [_tableColumns objectAtIndex: i];
      isResizable[i] = [tb isResizable];
      if (isResizable[i] == YES)
	{
	  minWidth[i] = [tb minWidth];
	  maxWidth[i] = [tb maxWidth];
	  
	  if (minWidth[i] < 0)
	    minWidth[i] = 0;
	  if (minWidth[i] > maxWidth[i])
	    {
	      minWidth[i] = [tb width];
	      maxWidth[i] = minWidth[i];
	    }
	  columnInfo[i * 2].width = minWidth[i];
	  columnInfo[i * 2].isMax = 0;
	  currentWidth[i] = minWidth[i];
	  remainingWidth -= minWidth[i];
	  
	  columnInfo[i * 2 + 1].width = maxWidth[i];
	  columnInfo[i * 2 + 1].isMax = 1;
	}
      else
	{
	  minWidth[i] = [tb width];
	  columnInfo[i * 2].width = minWidth[i];
	  columnInfo[i * 2].isMax = 0;
	  currentWidth[i] = minWidth[i];
	  remainingWidth -= minWidth[i];
	  
	  maxWidth[i] = minWidth[i];
	  columnInfo[i * 2 + 1].width = maxWidth[i];
	  columnInfo[i * 2 + 1].isMax = 1;
	}
    } 

  // sort the info we have
  quick_sort_internal(columnInfo, 0, 2 * _numberOfColumns - 1);

  previousPoint = columnInfo[0].width;
  numberOfCurrentColumns = 1;
  
  if (remainingWidth >= 0.)
    {
      for (i = 1; i < 2 * _numberOfColumns; i++)
	{
	  nextPoint = columnInfo[i].width;
	  
	  if (numberOfCurrentColumns > 0 && 
	      (nextPoint - previousPoint) > 0.)
	    {
	      int verification = 0;
	      
	      if ((nextPoint - previousPoint) * numberOfCurrentColumns
		  <= remainingWidth)
		{
		  toAddToCurrentColumns = nextPoint - previousPoint;
		  remainingWidth -= 
		    (nextPoint - previousPoint) * numberOfCurrentColumns;

		  for(j = 0; j < _numberOfColumns; j++)
		    {
		      if (minWidth[j] <= previousPoint
			  && maxWidth[j] >= nextPoint)
			{
			  verification++;
			  currentWidth[j] += toAddToCurrentColumns;
			}
		    }
		  if (verification != numberOfCurrentColumns)
		    {
		      NSLog(@"[NSTableView sizeToFit]: unexpected error");
		    }
		}
	      else
		{
		  int remainingInt = floor(remainingWidth);
		  int quotient = remainingInt / numberOfCurrentColumns;
		  int remainder = remainingInt - quotient * numberOfCurrentColumns;
		  int oldRemainder = remainder;

		  for(j = _numberOfColumns - 1; j >= 0; j--)
		    {
		      if (minWidth[j] <= previousPoint
			  && maxWidth[j] >= nextPoint)
			{
			  currentWidth[j] += quotient;
			  if (remainder > 0 
			      && maxWidth[j] >= currentWidth[j] + 1)
			    {
			      remainder--;
			      currentWidth[j]++;
			    }
			}
		    }
		  while (oldRemainder > remainder && remainder > 0)
		    {
		      oldRemainder = remainder;
		      for(j = 0; j < _numberOfColumns; j++)
			{
			  if (minWidth[j] <= previousPoint
			      && maxWidth[j] >= nextPoint)
			    {
			      if (remainder > 0 
				  && maxWidth[j] >= currentWidth[j] + 1)
				{
				  remainder--;
				  currentWidth[j]++;
				}
			    }
			  
			}
		    }
		  if (remainder > 0)
		    NSLog(@"There is still free space to fill.\
 However it seems better to use integer width for the columns");
		  else
		    remainingWidth = 0.;
		}
	      
	      
	    }
	  else if (numberOfCurrentColumns < 0)
	    {
	      NSLog(@"[NSTableView sizeToFit]: unexpected error");
	    }
	  
	  if (columnInfo[i].isMax)
	    numberOfCurrentColumns--;
	  else
	    numberOfCurrentColumns++;
	  previousPoint = nextPoint;
	  
	  if (remainingWidth == 0.)
	    {
	      break;
	    }
	}
    }

  _tilingDisabled = YES;

  remainingWidth = 0.;
  for (i = 0; i < _numberOfColumns; i++)
    {
      if (isResizable[i] == YES)
	{
	  tb = [_tableColumns objectAtIndex: i];
	  remainingWidth += currentWidth[i];
	  [tb setWidth: currentWidth[i]];
	}
      else
	{
	  remainingWidth += minWidth[i];
	}
    }


  difference = availableWidth - remainingWidth;


  _tilingDisabled = NO;
  NSZoneFree(NSDefaultMallocZone(), columnInfo);
  NSZoneFree(NSDefaultMallocZone(), currentWidth);
  NSZoneFree(NSDefaultMallocZone(), maxWidth);
  NSZoneFree(NSDefaultMallocZone(), minWidth);


  [self tile];
}
/*
- (void) sizeToFit
{
  NSCell *cell;
  NSEnumerator	*enumerator;
  NSTableColumn	*tb;
  float table_width;
  float width;
  float candidate_width;
  int row;

  _tilingDisabled = YES;

  // First Step
  // Resize Each Column to its Minimum Width
  table_width = _bounds.origin.x;
  enumerator = [_tableColumns objectEnumerator];
  while ((tb = [enumerator nextObject]) != nil)
    {
      // Compute min width of column 
      width = [[tb headerCell] cellSize].width;
      for (row = 0; row < _numberOfRows; row++)
	{
	  cell = [tb dataCellForRow: row];
	  [cell setObjectValue: [_dataSource tableView: self
					     objectValueForTableColumn: tb
					     row: row]]; 
	  if (_del_responds)
	    {
	      [_delegate tableView: self   willDisplayCell: cell 
			 forTableColumn: tb   row: row];
	    }
	  candidate_width = [cell cellSize].width;

	  if (_drawsGrid)
	    candidate_width += 4;

	  if (candidate_width > width)
	    {
	      width = candidate_width;
	    }
	}
      width += _intercellSpacing.width;
      [tb setWidth: width];
      // It is necessary to ask the column for the width, since it might have 
      // been changed by the column to constrain it to a min or max width
      table_width += [tb width];
    }

  // Second Step
  // If superview (clipview) is bigger than that, divide remaining space 
  // between all columns
  if ((_super_view != nil) && (_numberOfColumns > 0))
    {
      float excess_width;

      excess_width = NSMaxX ([self convertRect: [_super_view bounds] 
				      fromView: _super_view]);
      excess_width -= table_width;
      // Since we resized each column at its minimum width, 
      // it's useless to try shrinking more: we can't
      if (excess_width <= 0)
	{
	  _tilingDisabled = NO;
	  [self tile];
	  NSLog(@"exiting sizeToFit");
	  return;
	}
      excess_width = excess_width / _numberOfColumns;

      enumerator = [_tableColumns objectEnumerator];
      while ((tb = [enumerator nextObject]) != nil)
	{
	  [tb setWidth: ([tb width] + excess_width)];
	}
    }

  _tilingDisabled = NO;
  [self tile];
  NSLog(@"exiting sizeToFit");
}
*/
- (void) noteNumberOfRowsChanged
{
  _numberOfRows = [_dataSource numberOfRowsInTableView: self];
  
  /* If we are selecting rows, we have to check that we have no
     selected rows below the new end of the table */
  if (!_selectingColumns)
    {
      int i, count = [_selectedRows count]; 
      int row = -1;
      
      /* Check that all selected rows are in the new range of rows */
      for (i = 0; i < count; i++)
	{
	  row = [[_selectedRows objectAtIndex: i] intValue];

	  if (row >= _numberOfRows)
	    {
	      break;
	    }
	}

      if (i < count  &&  row > -1)
	{
	  /* Some of them are outside the table ! - Remove them */
	  for (; i < count; i++)
	    {
	      [_selectedRows removeLastObject];
	    }
	  /* Now if the _selectedRow is outside the table, reset it to be
	     the last selected row (if any) */
	  if (_selectedRow >= _numberOfRows)
	    {
	      if ([_selectedRows count] > 0)
		{
		  _selectedRow = [[_selectedRows lastObject] intValue];
		}
	      else
		{
		  /* Argh - all selected rows were outside the table */
		  if (_allowsEmptySelection)
		    {
		      _selectedRow = -1;
		    }
		  else
		    {
		      /* We shouldn't allow empty selection - try
                         selecting the last row */
		      int lastRow = _numberOfRows - 1;
		      
		      if (lastRow > -1)
			{
			  [_selectedRows addObject: 
					   [NSNumber numberWithInt: lastRow]];
			  _selectedRow = lastRow;
			}
		      else
			{
			  /* problem - there are no rows at all */
			  _selectedRow = -1;
			}
		    }
		}
	    }
	}
    }

  [self setFrame: NSMakeRect (_frame.origin.x, 
			      _frame.origin.y,
			      _frame.size.width, 
			      (_numberOfRows * _rowHeight) + 1)];
  
  /* If we are shorter in height than the enclosing clipview, we
     should redraw us now. */
  if (_super_view != nil)
    {
      NSRect superviewBounds; // Get this *after* [self setFrame:]
      superviewBounds = [_super_view bounds];
      if ((superviewBounds.origin.x <= _frame.origin.x) 
          && (NSMaxY (superviewBounds) >= NSMaxY (_frame)))
	{
	  [self setNeedsDisplay: YES];
	}
    }
}

- (void) tile
{
  float table_width = 0;
  float table_height;

  if (_tilingDisabled == YES)
    return;

  if (_numberOfColumns > 0)
    {
      int i;
      float width;
  
      _columnOrigins[0] = _bounds.origin.x;
      width = [[_tableColumns objectAtIndex: 0] width];
      table_width += width;
      for (i = 1; i < _numberOfColumns; i++)
	{
	  _columnOrigins[i] = _columnOrigins[i - 1] + width;
	  width = [[_tableColumns objectAtIndex: i] width];
	  table_width += width;
	}
    }
  /* + 1 for the last grid line */
  table_height = (_numberOfRows * _rowHeight) + 1;
  [self setFrameSize: NSMakeSize (table_width, table_height)];
  [self setNeedsDisplay: YES];

  if (_headerView != nil)
    {
      [_headerView setFrameSize: 
		     NSMakeSize (_frame.size.width,
				 [_headerView frame].size.height)];
      [_cornerView setFrameSize: 
		     NSMakeSize ([NSScroller scrollerWidth] + 1,
				 [_headerView frame].size.height)];
      [_headerView setNeedsDisplay: YES];
      [_cornerView setNeedsDisplay: YES];
    }  
}

/* 
 * Drawing 
 */

- (void)drawRow: (int)rowIndex clipRect: (NSRect)aRect
{
  int startingColumn; 
  int endingColumn;
  NSTableColumn *tb;
  NSRect drawingRect;
  NSCell *cell;
  int i;
  float x_pos;

  if (_dataSource == nil)
    {
      return;
    }

  /* Using columnAtPoint: here would make it called twice per row per drawn 
     rect - so we avoid it and do it natively */

  /* Determine starting column as fast as possible */
  x_pos = NSMinX (aRect);
  i = 0;
  while ((x_pos > _columnOrigins[i]) && (i < _numberOfColumns))
    {
      i++;
    }
  startingColumn = (i - 1);

  if (startingColumn == -1)
    startingColumn = 0;

  /* Determine ending column as fast as possible */
  x_pos = NSMaxX (aRect);
  // Nota Bene: we do *not* reset i
  while ((x_pos > _columnOrigins[i]) && (i < _numberOfColumns))
    {
      i++;
    }
  endingColumn = (i - 1);

  if (endingColumn == -1)
    endingColumn = _numberOfColumns - 1;

  /* Draw the row between startingColumn and endingColumn */
  for (i = startingColumn; i <= endingColumn; i++)
    {
      if (i != _editedColumn || rowIndex != _editedRow)
	{
	  tb = [_tableColumns objectAtIndex: i];
	  cell = [tb dataCellForRow: rowIndex];
	  if (_del_responds)
	    {
	      [_delegate tableView: self   willDisplayCell: cell 
			 forTableColumn: tb   row: rowIndex];
	    }
	  [cell setObjectValue: [_dataSource tableView: self
					     objectValueForTableColumn: tb
					     row: rowIndex]]; 
	  drawingRect = [self frameOfCellAtColumn: i
			      row: rowIndex];
	  [cell drawWithFrame: drawingRect inView: self];
	}
    }
}


- (void) drawGridInClipRect: (NSRect)aRect
{
  float minX = NSMinX (aRect);
  float maxX = NSMaxX (aRect);
  float minY = NSMinY (aRect);
  float maxY = NSMaxY (aRect);
  int i;
  float x_pos;
  int startingColumn; 
  int endingColumn;

  NSGraphicsContext *ctxt = GSCurrentContext ();
  float position;

  int startingRow    = [self rowAtPoint: 
			       NSMakePoint (_bounds.origin.x, minY)];
  int endingRow      = [self rowAtPoint: 
			       NSMakePoint (_bounds.origin.x, maxY)];

  /* Using columnAtPoint:, rowAtPoint: here calls them only twice 

     per drawn rect */
  x_pos = minX;
  i = 0;
  while ((x_pos > _columnOrigins[i]) && (i < _numberOfColumns))
    {
      i++;
    }
  startingColumn = (i - 1);

  x_pos = maxX;
  // Nota Bene: we do *not* reset i
  while ((x_pos > _columnOrigins[i]) && (i < _numberOfColumns))
    {
      i++;
    }
  endingColumn = (i - 1);

  if (endingColumn == -1)
    endingColumn = _numberOfColumns - 1;
  /*
  int startingColumn = [self columnAtPoint: 
			       NSMakePoint (minX, _bounds.origin.y)];
  int endingColumn   = [self columnAtPoint: 
			       NSMakePoint (maxX, _bounds.origin.y)];
  */

  DPSgsave (ctxt);
  DPSsetlinewidth (ctxt, 1);
  [_gridColor set];

  if (_numberOfRows > 0)
    {
      /* Draw horizontal lines */
      if (startingRow == -1)
	startingRow = 0;
      if (endingRow == -1)
	endingRow = _numberOfRows - 1;
      
      position = _bounds.origin.y;
      position += startingRow * _rowHeight;
      for (i = startingRow; i <= endingRow + 1; i++)
	{
	  DPSmoveto (ctxt, minX, position);
	  DPSlineto (ctxt, maxX, position);
	  DPSstroke (ctxt);
	  position += _rowHeight;
	}
    }
  
  if (_numberOfColumns > 0)
    {
      /* Draw vertical lines */
      if (startingColumn == -1)
	startingColumn = 0;
      if (endingColumn == -1)
	endingColumn = _numberOfColumns - 1;

      for (i = startingColumn; i <= endingColumn; i++)
	{
	  DPSmoveto (ctxt, _columnOrigins[i], minY);
	  DPSlineto (ctxt, _columnOrigins[i], maxY);
	  DPSstroke (ctxt);
	}
      position =  _columnOrigins[endingColumn];
      position += [[_tableColumns objectAtIndex: endingColumn] width];  
      /* Last vertical line must moved a pixel to the left */
      if (endingColumn == (_numberOfColumns - 1))
	position -= 1;
      DPSmoveto (ctxt, position, minY);
      DPSlineto (ctxt, position, maxY);
      DPSstroke (ctxt);
    }

  DPSgrestore (ctxt);
}

- (void) highlightSelectionInClipRect: (NSRect)clipRect
{
  if (_selectingColumns == NO)
    {
      int selectedRowsCount;
      int row;
      int startingRow, endingRow;
      
      selectedRowsCount = [_selectedRows count];
      
      if (selectedRowsCount == 0)
	return;
      
      /* highlight selected rows */
      startingRow = [self rowAtPoint: NSMakePoint (0, NSMinY (clipRect))];
      endingRow   = [self rowAtPoint: NSMakePoint (0, NSMaxY (clipRect))];
      
      if (startingRow == -1)
	startingRow = 0;
      if (endingRow == -1)
	endingRow = _numberOfRows - 1;
      
      for (row = 0; row < selectedRowsCount; row++)
	{
	  int rowNumber; 
	  
	  rowNumber = [[_selectedRows objectAtIndex: row] intValue];
	  
	  if (rowNumber > endingRow)
	    break;
	  
	  if (rowNumber >= startingRow)
	    {
	      //	      NSHighlightRect(NSIntersectionRect([self rectOfRow: rowNumber],
	      //						 clipRect));
	      [[NSColor whiteColor] set];
	      NSRectFill(NSIntersectionRect([self rectOfRow: rowNumber], clipRect));
	    }
	}
    }
  else // Selecting columns
    {
      int selectedColumnsCount;
      int column;
      int startingColumn, endingColumn;
      
      selectedColumnsCount = [_selectedColumns count];
      
      if (selectedColumnsCount == 0)
	return;
      
      /* highlight selected columns */
      startingColumn = [self columnAtPoint: NSMakePoint (NSMinX (clipRect), 
							 0)];
      endingColumn = [self columnAtPoint: NSMakePoint (NSMaxX (clipRect), 0)];

      if (startingColumn == -1)
	startingColumn = 0;
      if (endingColumn == -1)
	endingColumn = _numberOfColumns - 1;
      
      for (column = 0; column < selectedColumnsCount; column++)
	{
	  int columnNumber; 
	  
	  columnNumber = [[_selectedColumns objectAtIndex: column] intValue];
	  
	  if (columnNumber > endingColumn)
	    break;
	  
	  if (columnNumber >= startingColumn)
	    {
	      NSHighlightRect (NSIntersectionRect(
						  [self rectOfColumn: columnNumber],
						  clipRect));
	    }
	}     
    }
}

- (void) drawRect: (NSRect)aRect
{
  int startingRow;
  int endingRow;
  int i;

  /* Draw background */

  /*  
  [_backgroundColor set];
  NSRectFill (aRect);
  */
  if ((_numberOfRows == 0) || (_numberOfColumns == 0))
    {
      return;
    }

  /* Draw selection */
  //    [self highlightSelectionInClipRect: aRect];

  /* Draw grid */
  if (_drawsGrid)
    {
      [self drawGridInClipRect: aRect];
    }
  
  /* Draw visible cells */
  /* Using rowAtPoint: here calls them only twice per drawn rect */
  startingRow = [self rowAtPoint: NSMakePoint (0, NSMinY (aRect))];
  endingRow   = [self rowAtPoint: NSMakePoint (0, NSMaxY (aRect))];

  if (startingRow == -1)
    {
      startingRow = 0;
    }
  if (endingRow == -1)
    {
      endingRow = _numberOfRows - 1;
    }
  //  NSLog(@"drawRect : %d-%d", startingRow, endingRow);
  {
    SEL sel = @selector(drawRow:clipRect:);
    IMP imp = [self methodForSelector: sel];
    
    NSRect localBackground;
    localBackground = aRect;
    localBackground.size.height = _rowHeight;
    localBackground.origin.y = _bounds.origin.y + (_rowHeight * startingRow);
    
    for (i = startingRow; i <= endingRow; i++)
      {
	
	[_backgroundColor set];
	NSRectFill (localBackground);
	[self highlightSelectionInClipRect: localBackground];
	if (_drawsGrid)
	  {
	    [self drawGridInClipRect: localBackground];
	  }
	localBackground.origin.y += _rowHeight;
	(*imp)(self, sel, i, aRect);
      }

    if (NSMaxY(aRect) > NSMaxY(localBackground) - _rowHeight)
      {
	[_backgroundColor set];
	localBackground.size.height =
	  aRect.size.height - aRect.origin.y + localBackground.origin.y;
	NSRectFill (localBackground);
      }
  }
}

- (BOOL) isOpaque
{
  return YES;
}

/* 
 * Scrolling 
 */

- (void) scrollRowToVisible: (int)rowIndex
{
  if (_super_view != nil)
    {
      NSRect rowRect = [self rectOfRow: rowIndex];
      NSRect visibleRect = [self convertRect: [_super_view bounds]
				 toView: self];

      // If the row is over the top, or it is partially visible 
      // on top,
      if ((rowRect.origin.y < visibleRect.origin.y))	
	{
	  // Then make it visible on top
	  NSPoint newOrigin;  
	  
	  newOrigin.x = visibleRect.origin.x;
	  newOrigin.y = rowRect.origin.y;
	  newOrigin = [self convertPoint: newOrigin  toView: _super_view];
	  [(NSClipView *)_super_view scrollToPoint: newOrigin];
	  return;
	}
      // If the row is under the bottom, or it is partially visible on
      // the bottom,
      if (NSMaxY (rowRect) > NSMaxY (visibleRect))
	{
	  // Then make it visible on bottom
	  NSPoint newOrigin;  
	  
	  newOrigin.x = visibleRect.origin.x;
	  newOrigin.y = visibleRect.origin.y;
	  newOrigin.y += NSMaxY (rowRect) - NSMaxY (visibleRect);
	  newOrigin = [self convertPoint: newOrigin  toView: _super_view];
	  [(NSClipView *)_super_view scrollToPoint: newOrigin];
	  return;
	}
    }
}

- (void) scrollColumnToVisible: (int)columnIndex
{
  if (_super_view != nil)
    {
      NSRect columnRect = [self rectOfColumn: columnIndex];
      NSRect visibleRect = [self convertRect: [_super_view bounds]
				 toView: self];
      float diff;

      // If the row is out on the left, or it is partially visible 
      // on the left
      if ((columnRect.origin.x < visibleRect.origin.x))	
	{
	  // Then make it visible on the left
	  NSPoint newOrigin;  
	  
	  newOrigin.x = columnRect.origin.x;
	  newOrigin.y = visibleRect.origin.y;
	  newOrigin = [self convertPoint: newOrigin  toView: _super_view];
	  [(NSClipView *)_super_view scrollToPoint: newOrigin];
	  return;
	}
      diff = NSMaxX (columnRect) - NSMaxX (visibleRect);
      // If the row is out on the right, or it is partially visible on
      // the right,
      if (diff > 0)
	{
	  // Then make it visible on the right
	  NSPoint newOrigin;

	  newOrigin.x = visibleRect.origin.x;
	  newOrigin.y = visibleRect.origin.y;
	  newOrigin.x += diff;
	  newOrigin = [self convertPoint: newOrigin  toView: _super_view];
	  [(NSClipView *)_super_view scrollToPoint: newOrigin];
	  return;
	}
    }
}


/* 
 * Text delegate methods 
 */

- (void) textDidBeginEditing: (NSNotification *)aNotification
{
  NSMutableDictionary *d;

  d = [[NSMutableDictionary alloc] initWithDictionary: 
				     [aNotification userInfo]];
  [d setObject: [aNotification object] forKey: @"NSFieldEditor"];
  [nc postNotificationName: NSControlTextDidBeginEditingNotification
      object: self
      userInfo: d];
}

- (void) textDidChange: (NSNotification *)aNotification
{
  NSMutableDictionary *d;

  // MacOS-X asks us to inform the cell if possible.
  if ((_editedCell != nil) && [_editedCell respondsToSelector: 
						 @selector(textDidChange:)])
    [_editedCell textDidChange: aNotification];

  d = [[NSMutableDictionary alloc] initWithDictionary: 
				     [aNotification userInfo]];
  [d setObject: [aNotification object] forKey: @"NSFieldEditor"];
  [nc postNotificationName: NSControlTextDidChangeNotification
      object: self
      userInfo: d];
}

- (void) textDidEndEditing: (NSNotification *)aNotification
{
  NSMutableDictionary *d;
  id textMovement;
  int row, column;

  [self validateEditing];

  d = [[NSMutableDictionary alloc] initWithDictionary: 
				     [aNotification userInfo]];
  [d setObject: [aNotification object] forKey: @"NSFieldEditor"];
  [nc postNotificationName: NSControlTextDidEndEditingNotification
      object: self
      userInfo: d];

  [_editedCell endEditing: [aNotification object]];
  [self setNeedsDisplayInRect: 
	  [self frameOfCellAtColumn: _editedColumn row: _editedRow]];
  _textObject = nil;
  _editedCell = nil;
  RELEASE (_editedCell);
  /* Save values */
  row = _editedRow;
  column = _editedColumn;
  /* Only then Reset them */
  _editedColumn = -1;
  _editedRow = -1;

  textMovement = [[aNotification userInfo] objectForKey: @"NSTextMovement"];
  if (textMovement)
    {
      switch ([(NSNumber *)textMovement intValue])
	{
	case NSReturnTextMovement:
	  // Send action ?
	  break;
	case NSTabTextMovement:
	  if([self _editNextEditableCellAfterRow: row  column: column] == YES)
	    {
	      break;
	    }
	  [_window selectKeyViewFollowingView: self];
	  break;
	case NSBacktabTextMovement:
	  if([self _editPreviousEditableCellBeforeRow: row  column: column] == YES)
	    {
	      break;
	    }
	  [_window selectKeyViewPrecedingView: self];
	  break;
	}
    }
}

- (BOOL) textShouldBeginEditing: (NSText *)textObject
{
  if (_delegate && [_delegate respondsToSelector:
				@selector(control:textShouldBeginEditing:)])
    return [_delegate control: self
		      textShouldBeginEditing: textObject];
  else
    return YES;
}

- (BOOL) textShouldEndEditing: (NSText *)aTextObject
{
  if ([_delegate respondsToSelector:
		   @selector(control:textShouldEndEditing:)])
    {
      if ([_delegate control: self
		     textShouldEndEditing: aTextObject] == NO)
	{
	  NSBeep ();
	  return NO;
	}
      
      return YES;
    }

  if ([_delegate respondsToSelector: 
		   @selector(control:isValidObject:)] == YES)
    {
      NSFormatter *formatter;
      id newObjectValue;
      
      formatter = [_cell formatter];
      
      if ([formatter getObjectValue: &newObjectValue 
		     forString: [_textObject text] 
		     errorDescription: NULL] == YES)
	{
	  if ([_delegate control: self
			 isValidObject: newObjectValue] == NO)
	    return NO;
	}
    }

  return [_editedCell isEntryAcceptable: [aTextObject text]];
}

/* 
 * Persistence 
 */

- (NSString *) autosaveName
{
  return _autosaveName;
}

- (BOOL) autosaveTableColumns
{
  return _autosaveTableColumns;
}

- (void) setAutosaveName: (NSString *)name
{
  ASSIGN (_autosaveName, name);
  [self _autoloadTableColumns];
}

- (void) setAutosaveTableColumns: (BOOL)flag
{
  if (flag == _autosaveTableColumns)
    {
      return;
    }

  _autosaveTableColumns = flag;
  if (flag)
    {
      [self _autoloadTableColumns];
      [nc addObserver: self 
          selector: @selector(_autosaveTableColumns)
	  name: NSTableViewColumnDidResizeNotification
	  object: self];
    }
  else
    {
      [nc removeObserver: self 
	  name: NSTableViewColumnDidResizeNotification
	  object: self];    
    }
}

/* 
 * Delegate 
 */

- (void) setDelegate: (id)anObject
{
  const SEL sel = @selector(tableView:willDisplayCell:forTableColumn:row:);

  if (_delegate)
    [nc removeObserver: _delegate name: nil object: self];
  _delegate = anObject;
  
#define SET_DELEGATE_NOTIFICATION(notif_name) \
  if ([_delegate respondsToSelector: @selector(tableView##notif_name:)]) \
    [nc addObserver: _delegate \
      selector: @selector(tableView##notif_name:) \
      name: NSTableView##notif_name##Notification object: self]

  SET_DELEGATE_NOTIFICATION(ColumnDidMove);
  SET_DELEGATE_NOTIFICATION(ColumnDidResize);
  SET_DELEGATE_NOTIFICATION(SelectionDidChange);
  SET_DELEGATE_NOTIFICATION(SelectionIsChanging);
  
  /* Cache */
  _del_responds = [_delegate respondsToSelector: sel];
}

- (id) delegate
{
  return _delegate;
}


/* indicator image */
- (NSImage *) indicatorImageInTableColumn: (NSTableColumn *)aTableColumn
{
  // TODO
  NSLog(@"Method %s is not implemented for class %s",
	"indicatorImageInTableColumn:", "NSTableView");
  return nil;
}

- (void) setIndicatorImage: (NSImage *)anImage
	     inTableColumn: (NSTableColumn *)aTableColumn
{
  // TODO
  NSLog(@"Method %s is not implemented for class %s",
	"setIndicatorImage:inTableColumn:", "NSTableView");
}

/* highlighting columns */
- (NSTableColumn *) highlightedTableColumn
{
  return _highlightedTableColumn;

  // TODO
  NSLog(@"Method %s is not implemented for class %s",
	"highlightedTableColumn", "NSTableView");
  return nil;
}

- (void) setHighlightedTableColumn: (NSTableColumn *)aTableColumn
{
  int tableColumnIndex;

  tableColumnIndex = [_tableColumns indexOfObject: aTableColumn];

  if (tableColumnIndex == NSNotFound)
    {
      NSLog(@"setHighlightedTableColumn received an invalid\
 NSTableColumn object");
      return;
    }

  // we do not need to retain aTableColumn as it is already in
  // _tableColumns array
  _highlightedTableColumn = aTableColumn;

  [_headerView setNeedsDisplay: YES];
}

/* dragging rows */
- (NSImage*) dragImageForRows: (NSArray*)dragRows
			event: (NSEvent*)dragEvent
	      dragImageOffset: (NSPoint*)dragImageOffset
{
  // TODO
  NSLog(@"Method %s is not implemented for class %s",
	"dragImageForRows:event:dragImageOffset:", "NSTableView");
  return nil;
}

- (void) setDropRow: (int)row
      dropOperation: (NSTableViewDropOperation)operation
{
  // TODO
  NSLog(@"Method %s is not implemented for class %s",
	"setDropRow:dropOperation:", "NSTableView");
}

- (void) setVerticalMotionCanBeginDrag: (BOOL)flag
{
  // TODO
  NSLog(@"Method %s is not implemented for class %s",
	"setVerticalMotionCanBeginDrag:", "NSTableView");
}

- (BOOL) verticalMotionCanBeginDrag
{
  // TODO
  NSLog(@"Method %s is not implemented for class %s",
	"verticalMotionCanBeginDrag", "NSTableView");
  return NO;
}

/*
 * Encoding/Decoding
 */

- (void) encodeWithCoder: (NSCoder*)aCoder
{
  [super encodeWithCoder: aCoder];

  [aCoder encodeConditionalObject: _dataSource];
  [aCoder encodeObject: _tableColumns];
  [aCoder encodeObject: _gridColor];
  [aCoder encodeObject: _backgroundColor];
  [aCoder encodeObject: _headerView];
  [aCoder encodeObject: _cornerView];
  [aCoder encodeConditionalObject: _delegate];
  [aCoder encodeConditionalObject: _target];

  [aCoder encodeValueOfObjCType: @encode(int) at: &_numberOfRows];
  [aCoder encodeValueOfObjCType: @encode(int) at: &_numberOfColumns];

  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_drawsGrid];
  [aCoder encodeValueOfObjCType: @encode(float) at: &_rowHeight];
  [aCoder encodeValueOfObjCType: @encode(SEL) at: &_doubleAction];
  [aCoder encodeSize: _intercellSpacing];

  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_allowsMultipleSelection];
  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_allowsEmptySelection];
  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_allowsColumnSelection];
  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_allowsColumnResizing];
  [aCoder encodeValueOfObjCType: @encode(BOOL) at: &_autoresizesAllColumnsToFit];

}

- (id) initWithCoder: (NSCoder*)aDecoder
{
  int version = [aDecoder versionForClassName: 
			    NSStringFromClass([self class])];

  id aDelegate;

  if (version == currentVersion)
    {
      self = [super initWithCoder: aDecoder];
      
      _dataSource      = [aDecoder decodeObject];
      _tableColumns    = RETAIN([aDecoder decodeObject]);
      _gridColor       = RETAIN([aDecoder decodeObject]);
      _backgroundColor = RETAIN([aDecoder decodeObject]);
      _headerView      = RETAIN([aDecoder decodeObject]);
      _cornerView      = RETAIN([aDecoder decodeObject]);
      aDelegate        = [aDecoder decodeObject];
      _target          = [aDecoder decodeObject];
      
      [self setDelegate: aDelegate];
      [_headerView setTableView: self];
      [_tableColumns makeObjectsPerformSelector: @selector(setTableView:)
		     withObject: self];
      
      [aDecoder decodeValueOfObjCType: @encode(int) at: &_numberOfRows];
      [aDecoder decodeValueOfObjCType: @encode(int) at: &_numberOfColumns];
      
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_drawsGrid];
      [aDecoder decodeValueOfObjCType: @encode(float) at: &_rowHeight];
      [aDecoder decodeValueOfObjCType: @encode(SEL) at: &_doubleAction];
      _intercellSpacing = [aDecoder decodeSize];
      
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsMultipleSelection];
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsEmptySelection];
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsColumnSelection];
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsColumnResizing];
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_autoresizesAllColumnsToFit];
      
      ASSIGN (_selectedColumns, [NSMutableArray array]);
      ASSIGN (_selectedRows, [NSMutableArray array]);
      if (_numberOfColumns)
	_columnOrigins = NSZoneMalloc (NSDefaultMallocZone (), 
				       sizeof(float) * _numberOfColumns);
      
      _clickedRow = -1;
      _clickedColumn = -1;
      _selectingColumns = NO;
      _selectedColumn = -1;
      _selectedRow = -1;
      _editedColumn = -1;
      _editedRow = -1;
    }
  else if (version == 1)
    {
      self = [super initWithCoder: aDecoder];
      
      _dataSource      = [aDecoder decodeObject];
      _tableColumns    = RETAIN([aDecoder decodeObject]);
      _gridColor       = RETAIN([aDecoder decodeObject]);
      _backgroundColor = RETAIN([aDecoder decodeObject]);
      _headerView      = RETAIN([aDecoder decodeObject]);
      _cornerView      = RETAIN([aDecoder decodeObject]);
      aDelegate        = [aDecoder decodeObject];
      _target          = [aDecoder decodeObject];
      
      [self setDelegate: aDelegate];
      [_headerView setTableView: self];
      [_tableColumns makeObjectsPerformSelector: @selector(setTableView:)
		     withObject: self];
      
      [aDecoder decodeValueOfObjCType: @encode(int) at: &_numberOfRows];
      [aDecoder decodeValueOfObjCType: @encode(int) at: &_numberOfColumns];
      
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_drawsGrid];
      [aDecoder decodeValueOfObjCType: @encode(float) at: &_rowHeight];
      [aDecoder decodeValueOfObjCType: @encode(SEL) at: &_doubleAction];
      _intercellSpacing = [aDecoder decodeSize];
      
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsMultipleSelection];
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsEmptySelection];
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsColumnSelection];
      [aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_allowsColumnResizing];
      
      ASSIGN (_selectedColumns, [NSMutableArray array]);
      ASSIGN (_selectedRows, [NSMutableArray array]);
      if (_numberOfColumns)
	_columnOrigins = NSZoneMalloc (NSDefaultMallocZone (), 
				       sizeof(float) * _numberOfColumns);
      
      _clickedRow = -1;
      _clickedColumn = -1;
      _selectingColumns = NO;
      _selectedColumn = -1;
      _selectedRow = -1;
      _editedColumn = -1;
      _editedRow = -1;
    }

  return self;
}

- (void) updateCell: (NSCell*)aCell
{
  int i, j;
  NSTableColumn *tb;
  if (aCell == nil)
    return;
  return;
  for (i = 0; i < _numberOfColumns; i++)
    {
      tb = [_tableColumns objectAtIndex: i];
      if ([tb dataCellForRow: -1] == aCell)
	{
	  [self setNeedsDisplayInRect: [self rectOfColumn: i]];
	}
      else
	{
	  NSRect columnRect = [self rectOfColumn: i];
	  NSRect rowRect;
	  NSRect visibleRect = [self convertRect: [_super_view bounds]
				     toView: self];
	  NSPoint top = NSMakePoint(NSMinX(visibleRect),
				    NSMinY(visibleRect));
	  NSPoint bottom = NSMakePoint(NSMinX(visibleRect),
				       NSMaxY(visibleRect));
	  int firstVisibleRow = [self rowAtPoint: top];
	  int lastVisibleRow = [self rowAtPoint: bottom];

	  if (firstVisibleRow == -1)
	    firstVisibleRow = 0;

	  if (lastVisibleRow == -1)
	    lastVisibleRow = _numberOfColumns - 1;

	  for (j = firstVisibleRow; j < lastVisibleRow; j++)
	    {
	      if ([tb dataCellForRow: j] == aCell)
		{
		  rowRect = [self rectOfRow: j];
		  [self setNeedsDisplayInRect:
			  NSIntersectionRect(columnRect, rowRect)];
		}
	    }
	}
    }
}

- (void) _userResizedTableColumn: (int)index
			   width: (float)width
{
  [[_tableColumns objectAtIndex: index] setWidth: width];
}

- (float *) _columnOrigins
{
  return _columnOrigins;
}

- (void) _mouseDownInHeaderOfTableColumn: (NSTableColumn *)tc
{
  if ([_delegate 
	respondsToSelector:
	  @selector(tableView:mouseDownInHeaderOfTableColumn:)])
    {
      [_delegate tableView: self
		 mouseDownInHeaderOfTableColumn: tc];
    }
}

- (void) _didClickTableColumn: (NSTableColumn *)tc
{
  if ([_delegate 
	respondsToSelector:
	  @selector(tableView:didClickTableColumn:)])
    {
      [_delegate tableView: self
		 didClickTableColumn: tc];
    }
}

-(BOOL) _editNextEditableCellAfterRow: (int)row
			       column: (int)column
{
  int i, j;
  if (row > -1)
    {
      // First look for cells in the same row
      for (j = column + 1; j < _numberOfColumns; j++)
	{
	  if (_isCellEditable (_delegate, _tableColumns, self, row, j) == YES)
	    {
	      [self editColumn: j  row: row  withEvent: nil  select: YES];
	      return YES;
	    }
	}
    }
  // Otherwise, make the big cycle.
  for (i = row + 1; i < _numberOfRows; i++)
    {
      for (j = 0; j < _numberOfColumns; j++)
	{
	  if (_isCellEditable (_delegate, _tableColumns, self, row, i) == YES)
	    {
	      [self editColumn: j  row: i  withEvent: nil  select: YES];
	      return YES;
	    }
	}
    }
  return NO;
}
-(BOOL) _editPreviousEditableCellBeforeRow: (int)row
				    column: (int)column
{
  int i,j;
  if (row < _numberOfColumns)
    {
      // First look for cells in the same row
      for (j = column - 1; j > -1; j--)
	{
	  if (_isCellEditable (_delegate, _tableColumns, self, row, j) == YES)
	    {
	      [self editColumn: j  row: row  withEvent: nil  select: YES];
	      return YES;
	    }
	}
    }
  // Otherwise, make the big cycle.
  for (i = row - 1; i > -1; i--)
    {
      for (j = _numberOfColumns - 1; j > -1; j--)
	{
	  if (_isCellEditable (_delegate, _tableColumns, self, i, j) == YES)
	    {
	      [self editColumn: j  row: i  withEvent: nil  select: YES];
	      return YES;
	    }
	}
    }
  return NO;
}
- (void) _autosaveTableColumns
{
  if (_autosaveTableColumns && _autosaveName != nil) 
    {
      NSUserDefaults      *defaults;
      NSString            *tableKey;
      NSMutableDictionary *config;
      NSTableColumn       *column;
      id                  en;

      defaults  = [NSUserDefaults standardUserDefaults];
      tableKey = [NSString stringWithFormat: @"NSTableView Columns %@", 
			   _autosaveName];
      config = [NSMutableDictionary new];
      
      en = [[self tableColumns] objectEnumerator];
      while ((column = [en nextObject]) != nil)
	{
	  NSArray *array;
	  NSNumber *width, *identNum;
	  NSObject *ident;
	  
	  width = [NSNumber numberWithInt: [column width]];
	  ident = [column identifier];
	  identNum = [NSNumber numberWithInt: [self columnWithIdentifier: 
						      ident]];
	  array = [NSArray arrayWithObjects: width, identNum, nil];  
	  [config setObject: array  forKey: ident];      
	} 
      [defaults setObject: config  forKey: tableKey];
      [defaults synchronize];
      RELEASE (config);
    }
}

- (void) _autoloadTableColumns
{
  if (_autosaveTableColumns && _autosaveName != nil) 
    { 
      NSUserDefaults     *defaults;
      NSDictionary       *config;
      NSString           *tableKey;

      defaults  = [NSUserDefaults standardUserDefaults];
      tableKey = [NSString stringWithFormat: @"NSTableView Columns %@", 
			   _autosaveName];
      config = [defaults objectForKey: tableKey];
      if (config != nil) 
	{
	  NSEnumerator *en = [[config allKeys] objectEnumerator];
	  NSString *colKey;
	  NSArray *colDesc; 
	  NSTableColumn *col;
	  
	  while ((colKey = [en nextObject]) != nil) 
	    {
	      col = [self tableColumnWithIdentifier: colKey];
	      
	      if (col != nil)
		{
		  colDesc = [config objectForKey: colKey];
		  [col setWidth: [[colDesc objectAtIndex: 0] intValue]];
		  [self moveColumn: [self columnWithIdentifier: colKey]
			toColumn: [[colDesc objectAtIndex: 1] intValue]];
		}
	    }
	}
    }
}

- (void) superviewFrameChanged: (NSNotification*)aNotification
{
  if (_autoresizesAllColumnsToFit == YES)
    {
      [self sizeToFit];
    }
  else
    {
      float visible_width = [self convertRect: [_super_view bounds] 
				  fromView: _super_view].size.width;
      float table_width = 0;

      if(_numberOfColumns > 0)
        {
          table_width = 
            _columnOrigins[_numberOfColumns - 1] +
            [[_tableColumns objectAtIndex: _numberOfColumns - 1] width];
        }
      
      /*
	NSLog(@"columnOrigins[0] %f", _columnOrigins[0]);
	NSLog(@"superview.bounds %@", 
	      NSStringFromRect([_super_view bounds]));
	NSLog(@"superview.frame %@", 
	      NSStringFromRect([_super_view frame]));
	NSLog(@"table_width %f", table_width);
	NSLog(@"width %f", visible_width);
	NSLog(@"_superview_width %f", _superview_width);
      */

      if ( table_width - _superview_width <= 0.001
	   && table_width - _superview_width >= -0.001 )
	{
	  // the last column had been sized to fit
	  [self sizeLastColumnToFit];
	}
      else if ( table_width <= _superview_width
		&& table_width >= visible_width )
	{
	  // the tableView was too small and is now too large
	  [self sizeLastColumnToFit];
	}
      else if (table_width >= _superview_width
	       && table_width <= visible_width )
	{
	  // the tableView was too large and is now too small
	  if (_numberOfColumns > 0)
	    [self scrollColumnToVisible: 0];
	  [self sizeLastColumnToFit];
	}
      _superview_width = visible_width;
    }
}

@end /* implementation of NSTableView */