accessible/xpcom/xpcAccessibleGeneric.cpp
author Nicholas Nethercote <nnethercote@mozilla.com>
Fri, 19 Aug 2016 09:03:04 +1000
changeset 335989 6a81bba012c8d4283978ae3c6920843916817bfc
parent 304661 1dc79d4dac30a35e11d3eb265ed632fcf1b66210
child 351533 48ac718556a01201c327e022ed83825c2dbe5f56
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 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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/. */

#include "xpcAccessibleGeneric.h"

using namespace mozilla::a11y;

////////////////////////////////////////////////////////////////////////////////
// nsISupports and cycle collection

NS_IMPL_CYCLE_COLLECTION_0(xpcAccessibleGeneric)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(xpcAccessibleGeneric)
  NS_INTERFACE_MAP_ENTRY(nsIAccessible)
  NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIAccessibleSelectable,
                                     mSupportedIfaces & eSelectable)
  NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIAccessibleValue,
                                     mSupportedIfaces & eValue)
  NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIAccessibleHyperLink,
                                     mSupportedIfaces & eHyperLink)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIAccessible)
NS_INTERFACE_MAP_END

NS_IMPL_CYCLE_COLLECTING_ADDREF(xpcAccessibleGeneric)
NS_IMPL_CYCLE_COLLECTING_RELEASE(xpcAccessibleGeneric)

////////////////////////////////////////////////////////////////////////////////
// nsIAccessible

Accessible*
xpcAccessibleGeneric::ToInternalAccessible() const
{
  return mIntl.AsAccessible();
}

////////////////////////////////////////////////////////////////////////////////
// xpcAccessibleGeneric

void
xpcAccessibleGeneric::Shutdown()
{
  mIntl = nullptr;
}