accessible/windows/uia/UiaRoot.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "UiaRoot.h"
   8
   9 #include "MsaaRootAccessible.h"
  10 #include "RootAccessible.h"
  11
  12 using namespace mozilla;
  13 using namespace mozilla::a11y;
  14
  15 // UiaRoot
  16
  17 Accessible* UiaRoot::Acc() {
  18   auto* mr = static_cast<MsaaRootAccessible*>(this);
  19   return static_cast<MsaaAccessible*>(mr)->Acc();
  20 }
  21
  22 // IRawElementProviderFragmentRoot
  23
  24 STDMETHODIMP
  25 UiaRoot::ElementProviderFromPoint(
  26     double aX, double aY,
  27     __RPC__deref_out_opt IRawElementProviderFragment** aRetVal) {
  28   if (!aRetVal) {
  29     return E_INVALIDARG;
  30   }
  31   *aRetVal = nullptr;
  32   Accessible* acc = Acc();
  33   if (!acc) {
  34     return CO_E_OBJNOTCONNECTED;
  35   }
  36   if (Accessible* target = acc->ChildAtPoint(
  37           aX, aY, Accessible::EWhichChildAtPoint::DeepestChild)) {
  38     RefPtr<IRawElementProviderFragment> fragment =
  39         MsaaAccessible::GetFrom(target);
  40     fragment.forget(aRetVal);
  41   }
  42   return S_OK;
  43 }
  44
  45 STDMETHODIMP
  46 UiaRoot::GetFocus(__RPC__deref_out_opt IRawElementProviderFragment** aRetVal) {
  47   if (!aRetVal) {
  48     return E_INVALIDARG;
  49   }
  50   *aRetVal = nullptr;
  51   Accessible* acc = Acc();
  52   if (!acc) {
  53     return CO_E_OBJNOTCONNECTED;
  54   }
  55   if (Accessible* focus = acc->FocusedChild()) {
  56     RefPtr<IRawElementProviderFragment> fragment =
  57         MsaaAccessible::GetFrom(focus);
  58     fragment.forget(aRetVal);
  59   }
  60   return S_OK;
  61 }