accessible/windows/msaa/RootAccessibleWrap.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "RootAccessibleWrap.h"
   7
   8 #include "Compatibility.h"
   9 #include "mozilla/PresShell.h"
  10 #include "nsCoreUtils.h"
  11 #include "nsWinUtils.h"
  12
  13 using namespace mozilla;
  14 using namespace mozilla::a11y;
  15
  16 ////////////////////////////////////////////////////////////////////////////////
  17 // Constructor/destructor
  18
  19 RootAccessibleWrap::RootAccessibleWrap(dom::Document* aDocument,
  20                                        PresShell* aPresShell)
  21     : RootAccessible(aDocument, aPresShell) {}
  22
  23 RootAccessibleWrap::~RootAccessibleWrap() {}
  24
  25 ////////////////////////////////////////////////////////////////////////////////
  26 // RootAccessible
  27
  28 void RootAccessibleWrap::DocumentActivated(DocAccessible* aDocument) {
  29   // This check will never work with e10s enabled, in other words, as of
  30   // Firefox 57.
  31   if (Compatibility::IsDolphin() &&
  32       nsCoreUtils::IsTopLevelContentDocInProcess(aDocument->DocumentNode())) {
  33     MOZ_ASSERT(XRE_IsParentProcess());
  34     uint32_t count = mChildDocuments.Length();
  35     for (uint32_t idx = 0; idx < count; idx++) {
  36       DocAccessible* childDoc = mChildDocuments[idx];
  37       HWND childDocHWND = static_cast<HWND>(childDoc->GetNativeWindow());
  38       if (childDoc != aDocument)
  39         nsWinUtils::HideNativeWindow(childDocHWND);
  40       else
  41         nsWinUtils::ShowNativeWindow(childDocHWND);
  42     }
  43   }
  44 }