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/*
* The Cheat - The legendary universal game trainer for Mac OS X.
* http://www.brokenzipper.com/trac/wiki/TheCheat
*
* Copyright (c) 2003-2011, Charles McGarvey et al.
*
* Distributable under the terms and conditions of the 2-clause BSD
* license; see the file COPYING for the legal text of the license.
*/


#import "VariableTable.h"


@interface VariableTable ( PrivateAPI )

- (void)_setVisibleRows:(NSRange)rows;

@end


@implementation VariableTable


- (void)awakeFromNib
{
NSScrollView *scrollView = (NSScrollView *)[(NSClipView *)[self superview] superview];
NSScroller *oldScroller = [[scrollView verticalScroller] retain];

TrackerScroller *scroller = [[TrackerScroller alloc] initWithFrame:[oldScroller frame]];

[scroller setControlSize:[oldScroller controlSize]];
[scroller setFloatValue:[oldScroller floatValue] knobProportion:[oldScroller knobProportion]];
[scroller setControlTint:[oldScroller controlTint]];

// set the new scroller
[scrollView setHasVerticalScroller:NO];
[scrollView setVerticalScroller:scroller];
[scrollView setHasVerticalScroller:YES];

[scroller setDelegate:self];
[scroller release];
[oldScroller release];

/*if ( [super respondsToSelector:@selector(awakeFromNib)] ) {
[super awakeFromNib];
}*/
}


- (NSRange)visibleRows
{
return _visibleRows;
}

- (void)_setVisibleRows:(NSRange)rows
{
_visibleRows = rows;
}


- (void)reloadData
{
if ( _dontUpdate ) {
_updatePending = YES;
return;
}

[super reloadData];

NSRange range = [self rowsInRect:[(NSClipView *)[self superview] documentVisibleRect]];
id delegate = [self delegate];

if ( !NSEqualRanges( range, _visibleRows ) ) {
[self _setVisibleRows:range];
if ( [delegate respondsToSelector:@selector(tableView:didChangeVisibleRows:)] ) {
[delegate tableView:self didChangeVisibleRows:range];
}
}
}


- (void)keyDown:(NSEvent *)theEvent
{
_dontUpdate = YES;
[super keyDown:theEvent];
}

- (void)keyUp:(NSEvent *)theEvent
{
NSRange range = [self rowsInRect:[(NSClipView *)[self superview] documentVisibleRect]];
id delegate = [self delegate];

[super keyUp:theEvent];

_dontUpdate = NO;

if ( !NSEqualRanges( range, _visibleRows ) ) {
[self _setVisibleRows:range];
if ( [delegate respondsToSelector:@selector(tableView:didChangeVisibleRows:)] ) {
[delegate tableView:self didChangeVisibleRows:range];
}
}
else if ( _updatePending ) {
[self reloadData];
_updatePending = NO;
}
}

- (void)scrollerDidStartScrolling:(TrackerScroller *)scroller
{
_dontUpdate = YES;
}

- (void)scrollerDidStopScrolling:(TrackerScroller *)scroller
{
NSRange range = [self rowsInRect:[(NSClipView *)[self superview] documentVisibleRect]];
id delegate = [self delegate];

_dontUpdate = NO;

if ( !NSEqualRanges( range, _visibleRows ) ) {
[self _setVisibleRows:range];
if ( [delegate respondsToSelector:@selector(tableView:didChangeVisibleRows:)] ) {
[delegate tableView:self didChangeVisibleRows:range];
}
}
else if ( _updatePending ) {
[self reloadData];
_updatePending = NO;
}
}


@end
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