CPTableHeaderView_mousedown

upArrow = [[CPImage alloc] initWithContentsOfFile:@"Resources/upArrow.png"  size:CGSizeMake(8.0, 7.0)];
downArrow = [[CPImage alloc] initWithContentsOfFile:@"Resources/downArrow.png" size:CGSizeMake(8.0, 7.0)];

@implementation CPTableHeaderView (myAdditions)

- (void)mouseDown:(CPEvent)anEvent
{
	var selectedColumnNumber = [self columnAtPoint:[self convertPoint:[anEvent locationInWindow] fromView:nil]];	
	if(selectedColumnNumber == CPNotFound) return;
	
	var column = [[_tableView tableColumns] objectAtIndex:selectedColumnNumber];
	var headerContentView = Nil;
	
	// hide arrow in all columns
	for (var i in [_tableView tableColumns])
	{	
		if([_tableView tableColumns][i].isa.name == @"CPArray") continue;
		else 
		{
			column = [[_tableView tableColumns] objectAtIndex:i];
			headerContentView = [column headerView]._ephemeralSubviewsForNames["content-view"];
			[headerContentView setImagePosition:CPNoImage];
		}
	}

	// display arrow in selected column
	column = [[_tableView tableColumns] objectAtIndex:selectedColumnNumber];
	headerContentView = [column headerView]._ephemeralSubviewsForNames["content-view"];
	if([headerContentView image])
	{
		if([headerContentView image] == downArrow) [headerContentView setImage:upArrow];
		else [headerContentView setImage:downArrow];
	}
	else [headerContentView setImage:downArrow];
	[headerContentView setImagePosition:CPImageLeft];

	//sort the dataSource and reload
	// - (void) sortDataInColumnIdentifiedBy:(CPString)anIdentifier descending:(BOOL)isDescending

	[[_tableView dataSource] sortDataInColumnIdentifiedBy:[column identifier] descending:([headerContentView image] == downArrow)];
	[[_tableView selectedRowIndexes] removeAllIndexes];
	[_tableView reloadData];
}

@end