Bug 718625 - Implement TextLeaf accessibles for Mac. Fix Heading title. r=tbsaunde

--HG--
extra : rebase_source : c5f3044614af18ace16f7a91d3b51effa48c9ff8

accessible/src/mac/AccessibleWrap.mm

@@ -89,11 +89,13 @@ AccessibleWrap::GetNativeType ()
     case roles::STATICTEXT:
     case roles::CAPTION:
     case roles::ACCEL_LABEL:
-    case roles::TEXT_LEAF:
     case roles::PASSWORD_TEXT:
       // normal textfield (static or editable)
       return [mozTextAccessible class];
 
+    case roles::TEXT_LEAF:
+      return [mozTextLeafAccessible class];
+
     case roles::LINK:
       return [mozLinkAccessible class];
 

accessible/src/mac/mozAccessible.mm

@@ -472,7 +472,7 @@ GetClosestInterestingAccessible(id anObject)
 
   nsAutoString title;
   mGeckoAccessible->Name(title);
-  return title.IsEmpty() ? nil : [NSString stringWithCharacters:title.BeginReading() length:title.Length()];
+  return nsCocoaUtils::ToNSString(title);
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
 }
@@ -515,7 +515,8 @@ GetClosestInterestingAccessible(id anObject)
 
   nsAutoString desc;
   mGeckoAccessible->Description(desc);
-  return desc.IsEmpty() ? nil : [NSString stringWithCharacters:desc.BeginReading() length:desc.Length()];
+
+  return nsCocoaUtils::ToNSString(desc);
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
 }

accessible/src/mac/mozHTMLAccessible.mm

@@ -13,6 +13,17 @@
 
 @implementation mozHeadingAccessible
 
+- (NSString*)title
+{
+  nsAutoString title;
+  // XXX use the flattening API when there are available
+  // see bug 768298
+  nsresult rv = mGeckoAccessible->GetContent()->GetTextContent(title);
+  NS_ENSURE_SUCCESS(rv, nil);
+
+  return nsCocoaUtils::ToNSString(title);
+}
+
 - (id)value
 {
   if (!mGeckoAccessible || !mGeckoAccessible->IsHyperText())

accessible/src/mac/mozTextAccessible.h

@@ -14,3 +14,8 @@
   nsIAccessibleEditableText *mGeckoEditableTextAccessible; // strong
 }
 @end
+
+@interface mozTextLeafAccessible : mozAccessible
+{
+}
+@end

accessible/src/mac/mozTextAccessible.mm

@@ -5,6 +5,7 @@
 
 
 #include "AccessibleWrap.h"
+#include "TextLeafAccessible.h"
 
 #include "nsCocoaUtils.h"
 #include "nsObjCExceptions.h"
@@ -110,13 +111,18 @@ ToNSString(id aValue)
   if ([attribute isEqualToString:NSAccessibilitySelectedTextAttribute])
     return [self selectedText];
 
+  if ([attribute isEqualToString:NSAccessibilityTitleAttribute])
+    return @"";
+
   if ([attribute isEqualToString:NSAccessibilityValueAttribute]) {
     // Apple's SpeechSynthesisServer expects AXValue to return an AXStaticText
     // object's AXSelectedText attribute. See bug 674612 for details.
     // Also if there is no selected text, we return the full text. 
     // See bug 369710 for details.
-    if ([[self role] isEqualToString:NSAccessibilityStaticTextRole])
-      return [self selectedText] ? : [self text];
+    if ([[self role] isEqualToString:NSAccessibilityStaticTextRole]) {
+      NSString* selectedText = [self selectedText];
+      return (selectedText && [selectedText length]) ? selectedText : [self text];
+    }
 
     return [self text];
   }
@@ -226,7 +232,7 @@ ToNSString(id aValue)
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;
 
   if ([attribute isEqualToString:NSAccessibilityValueAttribute])
-    return [self isReadOnly];
+    return ![self isReadOnly];
   
   if ([attribute isEqualToString:NSAccessibilitySelectedTextAttribute] ||
       [attribute isEqualToString:NSAccessibilitySelectedTextRangeAttribute] ||
@@ -359,7 +365,7 @@ ToNSString(id aValue)
 
 - (NSString*)text
 {
-  if (!mGeckoTextAccessible)
+  if (!mGeckoAccessible || !mGeckoTextAccessible)
     return nil;
 
   // A password text field returns an empty value
@@ -378,6 +384,9 @@ ToNSString(id aValue)
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;
 
+  if (!mGeckoAccessible || !mGeckoTextAccessible)
+    return 0;
+
   return mGeckoTextAccessible ? mGeckoTextAccessible->CharacterCount() : 0;
 
   NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(0);
@@ -484,3 +493,45 @@ ToNSString(id aValue)
 }
 
 @end
+
+@implementation mozTextLeafAccessible
+
+- (NSArray*)accessibilityAttributeNames
+{
+  static NSMutableArray* supportedAttributes = nil;
+  if (!supportedAttributes) {
+    supportedAttributes = [[super accessibilityAttributeNames] mutableCopy];
+    [supportedAttributes removeObject:NSAccessibilityChildrenAttribute];
+  }
+
+  return supportedAttributes;
+}
+
+- (id)accessibilityAttributeValue:(NSString*)attribute
+{
+  if ([attribute isEqualToString:NSAccessibilityTitleAttribute])
+    return @"";
+
+  if ([attribute isEqualToString:NSAccessibilityValueAttribute])
+    return [self text];
+
+  return [super accessibilityAttributeValue:attribute];
+}
+
+- (NSString*)text
+{
+  if (!mGeckoAccessible)
+    return nil;
+
+  return nsCocoaUtils::ToNSString(mGeckoAccessible->AsTextLeaf()->Text());
+}
+
+- (long)textLength
+{
+  if (!mGeckoAccessible)
+    return 0;
+
+  return mGeckoAccessible->AsTextLeaf()->Text().Length();
+}
+
+@end