accessible/android/DocAccessibleWrap.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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "LocalAccessible-inl.h"
   8 #include "AccAttributes.h"
   9 #include "DocAccessibleChild.h"
  10 #include "DocAccessibleWrap.h"
  11 #include "nsIDocShell.h"
  12 #include "nsIScrollableFrame.h"
  13 #include "nsLayoutUtils.h"
  14 #include "nsAccessibilityService.h"
  15 #include "nsAccUtils.h"
  16 #include "Pivot.h"
  17 #include "SessionAccessibility.h"
  18 #include "TraversalRule.h"
  19 #include "mozilla/PresShell.h"
  20 #include "mozilla/a11y/DocAccessiblePlatformExtChild.h"
  21
  22 using namespace mozilla;
  23 using namespace mozilla::a11y;
  24
  25 #define UNIQUE_ID(acc)                             \
  26   !acc || (acc->IsDoc() && acc->AsDoc()->IPCDoc()) \
  27       ? 0                                          \
  28       : reinterpret_cast<uint64_t>(acc->UniqueID())
  29
  30 ////////////////////////////////////////////////////////////////////////////////
  31 // DocAccessibleWrap
  32 ////////////////////////////////////////////////////////////////////////////////
  33
  34 DocAccessibleWrap::DocAccessibleWrap(Document* aDocument, PresShell* aPresShell)
  35     : DocAccessible(aDocument, aPresShell) {
  36   // We need an nsINode associated with this accessible to register it with the
  37   // right SessionAccessibility instance. When the base AccessibleWrap
  38   // constructor is called we don't have one yet because null is passed as the
  39   // content node. So we do it here after a Document is associated with the
  40   // accessible.
  41   if (!IPCAccessibilityActive()) {
  42     MonitorAutoLock mal(nsAccessibilityService::GetAndroidMonitor());
  43     SessionAccessibility::RegisterAccessible(this);
  44   }
  45 }
  46
  47 DocAccessibleWrap::~DocAccessibleWrap() {}
  48
  49 void DocAccessibleWrap::Shutdown() {
  50   // Unregister here before disconnecting from PresShell.
  51   if (!IPCAccessibilityActive()) {
  52     MonitorAutoLock mal(nsAccessibilityService::GetAndroidMonitor());
  53     if (IsRoot()) {
  54       SessionAccessibility::UnregisterAll(PresShellPtr());
  55     } else {
  56       SessionAccessibility::UnregisterAccessible(this);
  57     }
  58   }
  59   DocAccessible::Shutdown();
  60 }
  61
  62 DocAccessibleWrap* DocAccessibleWrap::GetTopLevelContentDoc(
  63     AccessibleWrap* aAccessible) {
  64   DocAccessibleWrap* doc =
  65       static_cast<DocAccessibleWrap*>(aAccessible->Document());
  66   while (doc && !doc->IsTopLevelContentDoc()) {
  67     doc = static_cast<DocAccessibleWrap*>(doc->ParentDocument());
  68   }
  69
  70   return doc;
  71 }
  72
  73 bool DocAccessibleWrap::IsTopLevelContentDoc() {
  74   DocAccessible* parentDoc = ParentDocument();
  75   return DocumentNode()->IsContentDocument() &&
  76          (!parentDoc || !parentDoc->DocumentNode()->IsContentDocument());
  77 }
  78
  79 #undef UNIQUE_ID