accessible/xpcom/nsAccessibleRelation.h
author Nicholas Nethercote <nnethercote@mozilla.com>
Fri, 19 Aug 2016 09:03:04 +1000
changeset 335989 6a81bba012c8d4283978ae3c6920843916817bfc
parent 323897 6e80d6ebb0f9122f779931c3a3a657b8659489e6
permissions -rw-r--r--
Bug 1293596 (part 2) - Rework nsIWidget bounds getters. r=mstange. This patch makes GetBounds(), GetScreenBounds() and GetClientBounds() more obviously infallible, like existing functions such as GetNaturalBounds() and GetClientSize(). This results in clearer behaviour in nsCocoaWindow.mm if Objective C exceptions occur. Along the way, the patch removes some useless failure checks for these functions. The patch also removes the NS_IMETHOD from GetRestoredBounds and makes that function MOZ_MUST_USE.

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _nsAccessibleRelation_H_
#define _nsAccessibleRelation_H_

#include "nsIAccessibleRelation.h"

#include "nsCOMPtr.h"
#include "nsTArray.h"
#include "nsIMutableArray.h"
#include "mozilla/Attributes.h"
#include "mozilla/a11y/ProxyAccessible.h"

namespace mozilla {
namespace a11y {

class Relation;

/**
 * Class represents an accessible relation.
 */
class nsAccessibleRelation final : public nsIAccessibleRelation
{
public:
  nsAccessibleRelation(uint32_t aType, Relation* aRel);

  nsAccessibleRelation(uint32_t aType,
                       const nsTArray<ProxyAccessible*>* aTargets);

  NS_DECL_ISUPPORTS
  NS_DECL_NSIACCESSIBLERELATION

private:
  nsAccessibleRelation();
  ~nsAccessibleRelation();

  nsAccessibleRelation(const nsAccessibleRelation&);
  nsAccessibleRelation& operator = (const nsAccessibleRelation&);

  uint32_t mType;
  nsCOMPtr<nsIMutableArray> mTargets;
};

} // namespace a11y
} // namespace mozilla

#endif