MBCMoveTableViewAccessibility.mm   [plain text]

/*
File: MBCBoardViewAccessibility.mm
Contains: Accessibility navigation for chess board
Copyright: © 2004-2008 by Apple Inc., all rights reserved.
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*/

#import "MBCMoveTableViewAccessibility.h"
#import "MBCMoveTableView.h"

@implementation MBCMoveAccessibilityProxy

+ (id) proxyWithInfo:(MBCGameInfo *)info move:(int)move
{
return [[[MBCMoveAccessibilityProxy alloc]
initWithInfo:info move:move]
autorelease];
}

- (id) initWithInfo:(MBCGameInfo *)info move:(int)move
{
fInfo = info;
fMove = move;

return self;
}

- (BOOL) isEqual:(MBCMoveAccessibilityProxy *)other
{
return [other isKindOfClass:[MBCMoveAccessibilityProxy class]]
&& fInfo == other->fInfo && fMove == other->fMove;
}

- (NSUInteger)hash {
// Equal objects must hash the same.
return [fInfo hash] + fMove;
}

- (NSString *) description
{
return [NSString stringWithFormat:@"Move %d", fMove];
}

- (NSArray *)accessibilityAttributeNames
{
return [NSArray arrayWithObjects:
NSAccessibilityRoleAttribute,
NSAccessibilityRoleDescriptionAttribute,
NSAccessibilityParentAttribute,
NSAccessibilityWindowAttribute,
NSAccessibilityPositionAttribute,
NSAccessibilitySizeAttribute,
NSAccessibilityTitleAttribute,
NSAccessibilityDescriptionAttribute,
NSAccessibilityFocusedAttribute,
NSAccessibilityEnabledAttribute,
NSAccessibilityTopLevelUIElementAttribute,
nil];
}

- (NSArray *)accessibilityActionNames
{
return [NSArray array];
}

- (id)accessibilityFocusedUIElement
{
return self;
}

- (BOOL)accessibilityIsIgnored
{
return NO;
}

- (NSRect)accessibilityFocusRingBounds
{
NSRect rect = [[fInfo moveList] rectOfRow:fMove-1];
rect = [[fInfo moveList] convertRect:rect toView:nil];

return [[[fInfo moveList] window] convertRectToScreen:rect];
}

- (id)accessibilityAttributeValue:(NSString *)attribute
{
if ([attribute isEqual:NSAccessibilityParentAttribute])
return [fInfo moveList];
else if ([attribute isEqual:NSAccessibilityChildrenAttribute])
return [NSArray array];
else if ([attribute isEqual:NSAccessibilityWindowAttribute])
return [[fInfo moveList] window];
else if ([attribute isEqual:NSAccessibilityRoleAttribute])
return NSAccessibilityStaticTextRole;
else if ([attribute isEqual:NSAccessibilityRoleDescriptionAttribute])
return NSAccessibilityRoleDescription(NSAccessibilityStaticTextRole, nil);
else if ([attribute isEqual:NSAccessibilityPositionAttribute])
return [NSValue valueWithPoint:
[self accessibilityFocusRingBounds].origin];
else if ([attribute isEqual:NSAccessibilitySizeAttribute])
return [NSValue valueWithSize:
[self accessibilityFocusRingBounds].size];
else if ([attribute isEqual:NSAccessibilityTitleAttribute])
return [fInfo describeMove:fMove];
else if ([attribute isEqual:NSAccessibilityValueAttribute])
return nil;
else if ([attribute isEqual:NSAccessibilityDescriptionAttribute])
return @"";
else if ([attribute isEqual:NSAccessibilityFocusedAttribute])
return [NSNumber numberWithBool:
[[NSApp accessibilityFocusedUIElement]
isEqual:self]];
else if ([attribute isEqual:NSAccessibilityEnabledAttribute])
return [NSNumber numberWithBool:YES];
else if ([attribute isEqual:NSAccessibilityTopLevelUIElementAttribute])
return [[fInfo moveList] window];
#if 0
else
NSLog(@"unknown attr: %@\n", attribute);
#endif

return nil;
}

- (BOOL)accessibilityIsAttributeSettable:(NSString *)attribute
{
if ([attribute isEqual:NSAccessibilityFocusedAttribute])
return YES;

return NO;
}

- (void)accessibilitySetValue:(id)value forAttribute:(NSString *)attribute
{
}

@end

@implementation MBCMoveTableView ( Accessibility )

- (NSArray *)accessibilityAttributeNames
{
return [NSArray arrayWithObjects:
NSAccessibilityRoleAttribute,
NSAccessibilityRoleDescriptionAttribute,
NSAccessibilityParentAttribute,
NSAccessibilityChildrenAttribute,
NSAccessibilityContentsAttribute,
NSAccessibilityWindowAttribute,
NSAccessibilityPositionAttribute,
NSAccessibilitySizeAttribute,
NSAccessibilityTopLevelUIElementAttribute,
NSAccessibilitySelectedChildrenAttribute,
NSAccessibilityDescriptionAttribute,
nil];
}

- (NSArray *)accessibilityActionNames
{
return [NSArray array];
}

- (NSString *)accessibilityRoleAttribute
{
return NSAccessibilityGroupRole;
}

- (NSArray *)accessibilityChildrenAttribute
{
NSInteger numMoves = [self numberOfRows];
NSMutableArray * kids = [NSMutableArray arrayWithCapacity:numMoves];
for (NSInteger move = 0; move++ < numMoves; )
[kids addObject: [MBCMoveAccessibilityProxy proxyWithInfo:[self dataSource]
move:move]];

return kids;
}

- (NSArray *)accessibilitySelectedChildrenAttribute
{
return [NSArray arrayWithObject:
[MBCMoveAccessibilityProxy
proxyWithInfo:[self dataSource] move:[self selectedRow]+1]];
}

- (id)accessibilityAttributeValue:(NSString *)attribute
{
if ([attribute isEqual:NSAccessibilityChildrenAttribute] || [attribute isEqual:NSAccessibilityContentsAttribute]) {
return [self accessibilityChildrenAttribute];
} else if ([attribute isEqual:NSAccessibilitySelectedChildrenAttribute]) {
return [self accessibilitySelectedChildrenAttribute];
} else if ([attribute isEqual:NSAccessibilityDescriptionAttribute]) {
return NSLocalizedStringFromTable(@"move_table_desc", @"Spoken", @"Moves");
} else {
return [super accessibilityAttributeValue:attribute];
}
}

- (NSUInteger)accessibilityIndexOfChild:(id)child
{
if ([child isKindOfClass:[MBCMoveAccessibilityProxy class]]) {
MBCMoveAccessibilityProxy * moveProxy = (MBCMoveAccessibilityProxy *)child;

if (moveProxy->fInfo == [self dataSource])
return moveProxy->fMove-1;
else
return NSNotFound;
}
return [super accessibilityIndexOfChild:child];
}

- (NSUInteger)accessibilityArrayAttributeCount:(NSString *)attribute
{
if ([attribute isEqual:NSAccessibilityChildrenAttribute])
return [self numberOfRows];
else
return [super accessibilityArrayAttributeCount:attribute];
}

- (NSArray *)accessibilityArrayAttributeValues:(NSString *)attribute index:(NSUInteger)index maxCount:(NSUInteger)maxCount
{
if ([attribute isEqual:NSAccessibilityChildrenAttribute]) {
NSUInteger numKids = [self numberOfRows];
NSMutableArray * kids = [NSMutableArray arrayWithCapacity:numKids];
while (index++ < numKids && maxCount--)
[kids addObject: [MBCMoveAccessibilityProxy proxyWithInfo:[self dataSource]
move:index]];
return kids;
} else {
return [super accessibilityArrayAttributeValues:attribute index:index maxCount:maxCount];
}
}

- (BOOL)accessibilityIsIgnored
{
return NO;
}

- (id)accessibilityHitTest:(NSPoint)point
{
NSInteger move = [self rowAtPoint:point];
id hit;
if (move < 0)
hit = self;
else
hit = [MBCMoveAccessibilityProxy proxyWithInfo:[self dataSource] move:move+1];

return hit;
}

- (void)accessibilityPostNotification:(NSString *)notification
{
//
// We are a group, groups have children, not rows
//
if ([notification isEqual:NSAccessibilitySelectedRowsChangedNotification])
notification = NSAccessibilitySelectedChildrenChangedNotification;
[super accessibilityPostNotification:notification];
}

@end

// Local Variables:
// mode:ObjC
// End: