gecko/accessible/src/mac/mozDocAccessible.mm

/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
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 * for the specific language governing rights and limitations under the
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2006
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 * Contributor(s):
 *   Original Author: Håkan Waara <hwaara@gmail.com>
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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#include "nsRootAccessibleWrap.h"
#include "nsObjCExceptions.h"

#import "mozDocAccessible.h"

#import "mozView.h"

static id <mozAccessible, mozView> getNativeViewFromRootAccessible (nsAccessible *accessible)
{
  nsRootAccessibleWrap *root = static_cast<nsRootAccessibleWrap*>(accessible);
  id <mozAccessible, mozView> nativeView = nil;
  root->GetNativeWidget ((void**)&nativeView);
  return nativeView;
}

#pragma mark -

@implementation mozRootAccessible

// return the AXParent that our parallell NSView tells us about.
- (id)parent
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;

  if (!mParallelView)
    mParallelView = (id<mozView, mozAccessible>)[self representedView];
  
  if (mParallelView)
    return [mParallelView accessibilityAttributeValue:NSAccessibilityParentAttribute];
  
  NSAssert(mParallelView, @"we're a root accessible w/o native view?");
  return [super parent];

  NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}

- (BOOL)hasRepresentedView
{
  return YES;
}

// this will return our parallell NSView. see mozDocAccessible.h
- (id)representedView
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;

  if (mParallelView)
    return (id)mParallelView;
  
  mParallelView = getNativeViewFromRootAccessible (mGeckoAccessible);
  
  NSAssert(mParallelView, @"can't return root accessible's native parallel view.");
  return mParallelView;

  NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}

- (BOOL)isRoot
{
  return YES;
}

@end