ImageMapExample/FauxUIElement.m
/* |
File: FauxUIElement.m |
Abstract: abstract ui element object for accessibility |
Version: 1.1 |
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple |
Inc. ("Apple") in consideration of your agreement to the following |
terms, and your use, installation, modification or redistribution of |
this Apple software constitutes acceptance of these terms. If you do |
not agree with these terms, please do not use, install, modify or |
redistribute this Apple software. |
In consideration of your agreement to abide by the following terms, and |
subject to these terms, Apple grants you a personal, non-exclusive |
license, under Apple's copyrights in this original Apple software (the |
"Apple Software"), to use, reproduce, modify and redistribute the Apple |
Software, with or without modifications, in source and/or binary forms; |
provided that if you redistribute the Apple Software in its entirety and |
without modifications, you must retain this notice and the following |
text and disclaimers in all such redistributions of the Apple Software. |
Neither the name, trademarks, service marks or logos of Apple Inc. may |
be used to endorse or promote products derived from the Apple Software |
without specific prior written permission from Apple. Except as |
expressly stated in this notice, no other rights or licenses, express or |
implied, are granted by Apple herein, including but not limited to any |
patent rights that may be infringed by your derivative works or by other |
works in which the Apple Software may be incorporated. |
The Apple Software is provided by Apple on an "AS IS" basis. APPLE |
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION |
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS |
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND |
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. |
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL |
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, |
MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED |
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), |
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE |
POSSIBILITY OF SUCH DAMAGE. |
Copyright (C) 2011 Apple Inc. All Rights Reserved. |
*/ |
#import "FauxUIElement.h" |
#import <AppKit/NSAccessibility.h> |
@implementation FauxUIElement |
- (id)initWithRole:(NSString *)aRole parent:(id)aParent { |
self = [super init]; |
if (self) { |
role = [aRole retain]; |
parent = aParent; |
} |
return self; |
} |
+ (FauxUIElement *)elementWithRole:(NSString *)aRole parent:(id)aParent { |
return [[[self alloc] initWithRole:aRole parent:aParent] autorelease]; |
} |
- (void)dealloc { |
[role release]; |
[super dealloc]; |
} |
- (BOOL)isEqual:(id)object { |
if ([object isKindOfClass:[FauxUIElement class]]) { |
FauxUIElement *other = object; |
return [role isEqualToString:other->role] && [parent isEqual:other->parent]; |
} else |
return NO; |
} |
- (NSUInteger)hash { |
// Equal objects must hash the same. |
return [role hash] + [parent hash]; |
} |
// |
// accessibility protocol |
// |
// attributes |
- (NSArray *)accessibilityAttributeNames { |
static NSArray *attributes = nil; |
if (attributes == nil) { |
attributes = [[NSArray alloc] initWithObjects: |
NSAccessibilityRoleAttribute, |
NSAccessibilityRoleDescriptionAttribute, |
NSAccessibilityFocusedAttribute, |
NSAccessibilityParentAttribute, |
NSAccessibilityWindowAttribute, |
NSAccessibilityTopLevelUIElementAttribute, |
NSAccessibilityPositionAttribute, |
NSAccessibilitySizeAttribute, |
nil]; |
} |
return attributes; |
} |
- (id)accessibilityAttributeValue:(NSString *)attribute { |
if ([attribute isEqualToString:NSAccessibilityRoleAttribute]) { |
return role; |
} else if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute]) { |
return NSAccessibilityRoleDescription(role, nil); |
} else if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) { |
// Just check if the app thinks we're focused. |
id focusedElement = [NSApp accessibilityAttributeValue:NSAccessibilityFocusedUIElementAttribute]; |
return [NSNumber numberWithBool:[focusedElement isEqual:self]]; |
} else if ([attribute isEqualToString:NSAccessibilityParentAttribute]) { |
return NSAccessibilityUnignoredAncestor(parent); |
} else if ([attribute isEqualToString:NSAccessibilityWindowAttribute]) { |
// We're in the same window as our parent. |
return [parent accessibilityAttributeValue:NSAccessibilityWindowAttribute]; |
} else if ([attribute isEqualToString:NSAccessibilityTopLevelUIElementAttribute]) { |
// We're in the same top level element as our parent. |
return [parent accessibilityAttributeValue:NSAccessibilityTopLevelUIElementAttribute]; |
} else if ([attribute isEqualToString:NSAccessibilityPositionAttribute]) { |
return [NSValue valueWithPoint:[parent fauxUIElementPosition:self]]; |
} else if ([attribute isEqualToString:NSAccessibilitySizeAttribute]) { |
return [NSValue valueWithSize:[parent fauxUIElementSize:self]]; |
} |
return nil; |
} |
- (BOOL)accessibilityIsAttributeSettable:(NSString *)attribute { |
if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) { |
return [parent isFauxUIElementFocusable:self]; |
} else { |
return NO; |
} |
} |
- (void)accessibilitySetValue:(id)value forAttribute:(NSString *)attribute { |
if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) { |
[parent fauxUIElement:self setFocus:value]; |
} |
} |
// actions |
- (NSArray *)accessibilityActionNames { |
return [NSArray array]; |
} |
- (NSString *)accessibilityActionDescription:(NSString *)action { |
return nil; |
} |
- (void)accessibilityPerformAction:(NSString *)action { |
} |
// misc |
- (BOOL)accessibilityIsIgnored { |
return NO; |
} |
- (id)accessibilityHitTest:(NSPoint)point { |
return NSAccessibilityUnignoredAncestor(self); |
} |
- (id)accessibilityFocusedUIElement { |
return NSAccessibilityUnignoredAncestor(self); |
} |
@end |
Copyright © 2011 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2011-09-09