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nsHTMLFormControlAccessibleWrap.cpp

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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is IBM Corporation
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 * Contributor(s):
 *   Author: Aaron Leventhal (aleventh@us.ibm.com)
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#include "nsHTMLFormControlAccessibleWrap.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIRadioControlElement.h"
#include "nsIRadioGroupContainer.H"
#include "nsTextFormatter.h"

// --------------------------------------------------------
// nsXULMenuAccessibleWrap Accessible
// --------------------------------------------------------

nsHTMLRadioButtonAccessibleWrap::nsHTMLRadioButtonAccessibleWrap(nsIDOMNode *aDOMNode, 
                                                         nsIWeakReference *aShell):
nsHTMLRadioButtonAccessible(aDOMNode, aShell)
{
}

NS_IMETHODIMP nsHTMLRadioButtonAccessibleWrap::GetDescription(nsAString& aDescription)
{
  aDescription.Truncate();

  nsCOMPtr<nsIRadioControlElement> radio(do_QueryInterface(mDOMNode));
  if (!radio) {
    return NS_ERROR_FAILURE;
  }

  NS_ASSERTION(radio, "We should only have HTML radio buttons here");
  nsCOMPtr<nsIRadioGroupContainer> radioGroupContainer =
    radio->GetRadioGroupContainer();

  if (radioGroupContainer) {
    nsCOMPtr<nsIDOMHTMLInputElement> input(do_QueryInterface(mDOMNode));
    PRInt32 radioIndex, radioItemsInGroup;
    if (NS_SUCCEEDED(radioGroupContainer->GetPositionInGroup(input, &radioIndex, 
                                                             &radioItemsInGroup))) {
      // Don't localize the string "of" -- that's just the format of this string.
      // The AT will parse the relevant numbers out and add its own localization.
      nsTextFormatter::ssprintf(aDescription, NS_LITERAL_STRING("%d of %d").get(),
                                radioIndex + 1, radioItemsInGroup);
      return NS_OK;
    }
  }
  return nsAccessibleWrap::GetDescription(aDescription);
}

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