accessible/generic/LocalAccessible-inl.h

   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 #ifndef mozilla_a11y_Accessible_inl_h_
   8 #define mozilla_a11y_Accessible_inl_h_
   9
  10 #include "DocAccessible.h"
  11 #include "ARIAMap.h"
  12 #include "nsCoreUtils.h"
  13 #include "mozilla/dom/Element.h"
  14 #include "mozilla/PresShell.h"
  15
  16 #ifdef A11Y_LOG
  17 #  include "Logging.h"
  18 #endif
  19
  20 namespace mozilla {
  21 namespace a11y {
  22
  23 inline mozilla::a11y::role LocalAccessible::Role() const {
  24   const nsRoleMapEntry* roleMapEntry = ARIARoleMap();
  25   mozilla::a11y::role r =
  26       (!roleMapEntry || roleMapEntry->roleRule != kUseMapRole)
  27           ? NativeRole()
  28           : roleMapEntry->role;
  29   r = ARIATransformRole(r);
  30   return GetMinimumRole(r);
  31 }
  32
  33 inline mozilla::a11y::role LocalAccessible::ARIARole() {
  34   const nsRoleMapEntry* roleMapEntry = ARIARoleMap();
  35   if (!roleMapEntry || roleMapEntry->roleRule != kUseMapRole) {
  36     return mozilla::a11y::roles::NOTHING;
  37   }
  38
  39   return ARIATransformRole(roleMapEntry->role);
  40 }
  41
  42 inline void LocalAccessible::SetRoleMapEntry(
  43     const nsRoleMapEntry* aRoleMapEntry) {
  44   mRoleMapEntryIndex = aria::GetIndexFromRoleMap(aRoleMapEntry);
  45 }
  46
  47 inline bool LocalAccessible::NativeHasNumericValue() const {
  48   return mGenericTypes & eNumericValue;
  49 }
  50
  51 inline bool LocalAccessible::ARIAHasNumericValue() const {
  52   const nsRoleMapEntry* roleMapEntry = ARIARoleMap();
  53   if (!roleMapEntry || roleMapEntry->valueRule == eNoValue) return false;
  54
  55   if (roleMapEntry->valueRule == eHasValueMinMaxIfFocusable) {
  56     return InteractiveState() & states::FOCUSABLE;
  57   }
  58
  59   return true;
  60 }
  61
  62 inline bool LocalAccessible::HasNumericValue() const {
  63   return NativeHasNumericValue() || ARIAHasNumericValue();
  64 }
  65
  66 inline bool LocalAccessible::IsDefunct() const {
  67   MOZ_ASSERT(mStateFlags & eIsDefunct || IsApplication() || IsDoc() ||
  68                  mStateFlags & eSharedNode || mContent,
  69              "No content");
  70   return mStateFlags & eIsDefunct;
  71 }
  72
  73 inline void LocalAccessible::ScrollTo(uint32_t aHow) const {
  74   if (mContent) {
  75     RefPtr<PresShell> presShell = mDoc->PresShellPtr();
  76     nsCOMPtr<nsIContent> content = mContent;
  77     nsCoreUtils::ScrollTo(presShell, content, aHow);
  78   }
  79 }
  80
  81 inline bool LocalAccessible::InsertAfter(LocalAccessible* aNewChild,
  82                                          LocalAccessible* aRefChild) {
  83   MOZ_ASSERT(aNewChild, "No new child to insert");
  84
  85   if (aRefChild && aRefChild->LocalParent() != this) {
  86 #ifdef A11Y_LOG
  87     logging::TreeInfo("broken accessible tree", 0, "parent", this,
  88                       "prev sibling parent", aRefChild->LocalParent(), "child",
  89                       aNewChild, nullptr);
  90     if (logging::IsEnabled(logging::eVerbose)) {
  91       logging::Tree("TREE", "Document tree", mDoc);
  92       logging::DOMTree("TREE", "DOM document tree", mDoc);
  93     }
  94 #endif
  95     MOZ_ASSERT_UNREACHABLE("Broken accessible tree");
  96     mDoc->UnbindFromDocument(aNewChild);
  97     return false;
  98   }
  99
 100   return InsertChildAt(aRefChild ? aRefChild->IndexInParent() + 1 : 0,
 101                        aNewChild);
 102 }
 103
 104 }  // namespace a11y
 105 }  // namespace mozilla
 106
 107 #endif