Revision: 3788
http://skim-app.svn.sourceforge.net/skim-app/?rev=3788&view=rev
Author: hofman
Date: 2008-04-22 08:37:02 -0700 (Tue, 22 Apr 2008)
Log Message:
-----------
Add some checks to see if implementations are defined.
Modified Paths:
--------------
trunk/PDFDisplayView_SKExtensions.m
Modified: trunk/PDFDisplayView_SKExtensions.m
===================================================================
--- trunk/PDFDisplayView_SKExtensions.m 2008-04-22 12:49:42 UTC (rev 3787)
+++ trunk/PDFDisplayView_SKExtensions.m 2008-04-22 15:37:02 UTC (rev 3788)
@@ -171,21 +171,29 @@
}
- (NSArray *)accessibilityAttributeNames {
- return originalAccessibilityAttributeNames(parent, _cmd);
+ if (originalAccessibilityAttributeNames != NULL)
+ return originalAccessibilityAttributeNames(parent, _cmd);
+ else if ([parent respondsToSelector:_cmd])
+ return [parent accessibilityAttributeNames];
+ else
+ return [NSArray array];
}
- (id)accessibilityAttributeValue:(NSString *)attribute {
- if ([attribute isEqualToString:NSAccessibilityParentAttribute]) {
+ if ([attribute isEqualToString:NSAccessibilityParentAttribute])
return NSAccessibilityUnignoredAncestor(parent);
- } else if ([attribute isEqualToString:NSAccessibilityWindowAttribute]) {
+ else if ([attribute isEqualToString:NSAccessibilityWindowAttribute])
// We're in the same window as our parent.
return [NSAccessibilityUnignoredAncestor(parent)
accessibilityAttributeValue:NSAccessibilityWindowAttribute];
- } else if ([attribute
isEqualToString:NSAccessibilityTopLevelUIElementAttribute]) {
+ else if ([attribute
isEqualToString:NSAccessibilityTopLevelUIElementAttribute])
// We're in the same top level element as our parent.
return [NSAccessibilityUnignoredAncestor(parent)
accessibilityAttributeValue:NSAccessibilityTopLevelUIElementAttribute];
- } else {
+ else if (originalAccessibilityAttributeValue != NULL)
return originalAccessibilityAttributeValue(parent, _cmd, attribute);
- }
+ else if ([parent respondsToSelector:_cmd])
+ return [parent accessibilityAttributeValue:attribute];
+ else
+ return nil;
}
- (BOOL)accessibilityIsAttributeSettable:(NSString *)attribute {
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