ARIA 1.1: implementation for aria-col-* and aria-row-*.

content/browser/accessibility/browser_accessibility_cocoa.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "content/browser/accessibility/browser_accessibility_cocoa.h"
 
 #include <execinfo.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
@@ skipping 33 matching lines @@
 using ui::AXNodeData;
 using StringAttribute = ui::AXStringAttribute;
 using AXTextMarkerRef = CFTypeRef;
 using AXTextMarkerRangeRef = CFTypeRef;
 
 namespace {
 
 // Private WebKit accessibility attributes.
 NSString* const NSAccessibilityARIAAtomicAttribute = @"AXARIAAtomic";
 NSString* const NSAccessibilityARIABusyAttribute = @"AXARIABusy";
+NSString* const NSAccessibilityARIAColumnCountAttribute = @"AXARIAColumnCount";
+NSString* const NSAccessibilityARIAColumnIndexAttribute = @"AXARIAColumnIndex";
 NSString* const NSAccessibilityARIALiveAttribute = @"AXARIALive";
 NSString* const NSAccessibilityARIAPosInSetAttribute = @"AXARIAPosInSet";
 NSString* const NSAccessibilityARIARelevantAttribute = @"AXARIARelevant";
+NSString* const NSAccessibilityARIARowCountAttribute = @"AXARIARowCount";
+NSString* const NSAccessibilityARIARowIndexAttribute = @"AXARIARowIndex";
 NSString* const NSAccessibilityARIASetSizeAttribute = @"AXARIASetSize";
 NSString* const NSAccessibilityAccessKeyAttribute = @"AXAccessKey";
 NSString* const NSAccessibilityDropEffectsAttribute = @"AXDropEffects";
 NSString* const NSAccessibilityGrabbedAttribute = @"AXGrabbed";
 NSString* const NSAccessibilityInvalidAttribute = @"AXInvalid";
 NSString* const NSAccessibilityIsMultiSelectableAttribute =
     @"AXIsMultiSelectable";
 NSString* const NSAccessibilityLoadingProgressAttribute = @"AXLoadingProgress";
 NSString* const
     NSAccessibilityUIElementCountForSearchPredicateParameterizedAttribute =
@@ skipping 454 matching lines @@
 
 @implementation BrowserAccessibilityCocoa
 
 + (void)initialize {
   const struct {
     NSString* attribute;
     NSString* methodName;
   } attributeToMethodNameContainer[] = {
       {NSAccessibilityARIAAtomicAttribute, @"ariaAtomic"},
       {NSAccessibilityARIABusyAttribute, @"ariaBusy"},
+      {NSAccessibilityARIAColumnCountAttribute, @"ariaColumnCount"},
+      {NSAccessibilityARIAColumnIndexAttribute, @"ariaColumnIndex"},
       {NSAccessibilityARIALiveAttribute, @"ariaLive"},
       {NSAccessibilityARIAPosInSetAttribute, @"ariaPosInSet"},
       {NSAccessibilityARIARelevantAttribute, @"ariaRelevant"},
+      {NSAccessibilityARIARowCountAttribute, @"ariaRowCount"},
+      {NSAccessibilityARIARowIndexAttribute, @"ariaRowIndex"},
       {NSAccessibilityARIASetSizeAttribute, @"ariaSetSize"},
       {NSAccessibilityAccessKeyAttribute, @"accessKey"},
       {NSAccessibilityChildrenAttribute, @"children"},
       {NSAccessibilityColumnsAttribute, @"columns"},
       {NSAccessibilityColumnHeaderUIElementsAttribute, @"columnHeaders"},
       {NSAccessibilityColumnIndexRangeAttribute, @"columnIndexRange"},
       {NSAccessibilityContentsAttribute, @"contents"},
       {NSAccessibilityDescriptionAttribute, @"description"},
       {NSAccessibilityDisclosingAttribute, @"disclosing"},
       {NSAccessibilityDisclosedByRowAttribute, @"disclosedByRow"},
@@ skipping 96 matching lines @@
   return [NSNumber numberWithBool:boolValue];
 }
 
 - (NSNumber*)ariaBusy {
   if (![self instanceActive])
     return nil;
   return [NSNumber numberWithBool:
       GetState(browserAccessibility_, ui::AX_STATE_BUSY)];
 }
 
+- (NSNumber*)ariaColumnCount {
+  if (!browserAccessibility_->IsTableOrGridOrTreeGridRole())
+    return nil;
+  int count = -1;
+  if (!browserAccessibility_->GetIntAttribute(
+      ui::AX_ATTR_ARIA_COL_COUNT, &count))
+    return nil;
+  return [NSNumber numberWithInt:count];
+}
+
+- (NSNumber*)ariaColumnIndex {
+  if (!browserAccessibility_->IsCellOrTableHeaderRole())
+    return nil;
+  int index = -1;
+  if (!browserAccessibility_->GetIntAttribute(
+      ui::AX_ATTR_ARIA_COL_INDEX, &index))
+    return nil;
+  return [NSNumber numberWithInt:index];
+}
+
 - (NSString*)ariaLive {
   if (![self instanceActive])
     return nil;
   return NSStringForStringAttribute(
       browserAccessibility_, ui::AX_ATTR_LIVE_STATUS);
 }
 
 - (NSNumber*)ariaPosInSet {
   if (![self instanceActive])
     return nil;
   return [NSNumber numberWithInt:
       browserAccessibility_->GetIntAttribute(ui::AX_ATTR_POS_IN_SET)];
 }
 
 - (NSString*)ariaRelevant {
   if (![self instanceActive])
     return nil;
   return NSStringForStringAttribute(browserAccessibility_,
                                     ui::AX_ATTR_LIVE_RELEVANT);
 }
 
+- (NSNumber*)ariaRowCount {
+  if (!browserAccessibility_->IsTableOrGridOrTreeGridRole())
+    return nil;
+  int count = -1;
+  if (!browserAccessibility_->GetIntAttribute(
+      ui::AX_ATTR_ARIA_ROW_COUNT, &count))
+    return nil;
+  return [NSNumber numberWithInt:count];
+}
+
+- (NSNumber*)ariaRowIndex {
+  if (!browserAccessibility_->IsCellOrTableHeaderRole())
+    return nil;
+  int index = -1;
+  if (!browserAccessibility_->GetIntAttribute(
+      ui::AX_ATTR_ARIA_ROW_INDEX, &index))
+    return nil;
+  return [NSNumber numberWithInt:index];
+}
+
 - (NSNumber*)ariaSetSize {
   if (![self instanceActive])
     return nil;
   return [NSNumber numberWithInt:
       browserAccessibility_->GetIntAttribute(ui::AX_ATTR_SET_SIZE)];
 }
 
 // Returns an array of BrowserAccessibilityCocoa objects, representing the
 // accessibility children of this object.
 - (NSArray*)children {
@@ skipping 1786 matching lines @@
   // Specific role attributes.
   NSString* role = [self role];
   NSString* subrole = [self subrole];
   if ([role isEqualToString:NSAccessibilityTableRole] ||
       [role isEqualToString:NSAccessibilityGridRole]) {
     [ret addObjectsFromArray:@[
       NSAccessibilityColumnsAttribute, NSAccessibilityVisibleColumnsAttribute,
       NSAccessibilityRowsAttribute, NSAccessibilityVisibleRowsAttribute,
       NSAccessibilityVisibleCellsAttribute, NSAccessibilityHeaderAttribute,
       NSAccessibilityColumnHeaderUIElementsAttribute,
-      NSAccessibilityRowHeaderUIElementsAttribute
+      NSAccessibilityRowHeaderUIElementsAttribute,
+      NSAccessibilityARIAColumnCountAttribute,
+      NSAccessibilityARIARowCountAttribute,
     ]];
   } else if ([role isEqualToString:NSAccessibilityColumnRole]) {
     [ret addObjectsFromArray:@[
       NSAccessibilityIndexAttribute, NSAccessibilityHeaderAttribute,
       NSAccessibilityRowsAttribute, NSAccessibilityVisibleRowsAttribute
     ]];
   } else if ([role isEqualToString:NSAccessibilityCellRole]) {
     [ret addObjectsFromArray:@[
       NSAccessibilityColumnIndexRangeAttribute,
-      NSAccessibilityRowIndexRangeAttribute, @"AXSortDirection"
+      NSAccessibilityRowIndexRangeAttribute,
+      NSAccessibilityARIAColumnIndexAttribute,
+      NSAccessibilityARIARowIndexAttribute,
+      @"AXSortDirection",
     ]];
   } else if ([role isEqualToString:@"AXWebArea"]) {
     [ret addObjectsFromArray:@[
       @"AXLoaded", NSAccessibilityLoadingProgressAttribute
     ]];
   } else if ([role isEqualToString:NSAccessibilityTabGroupRole]) {
     [ret addObject:NSAccessibilityTabsAttribute];
   } else if ([role isEqualToString:NSAccessibilityProgressIndicatorRole] ||
              [role isEqualToString:NSAccessibilitySliderRole] ||
              [role isEqualToString:NSAccessibilityIncrementorRole] ||
@@ skipping 257 matching lines @@
 }
 
 - (BOOL)accessibilityNotifiesWhenDestroyed {
   // Indicate that BrowserAccessibilityCocoa will post a notification when it's
   // destroyed (see -detach). This allows VoiceOver to do some internal things
   // more efficiently.
   return YES;
 }
 
 @end