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