accessible/html/HTMLListAccessible.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 "HTMLListAccessible.h"
   8
   9 #include "AccAttributes.h"
  10 #include "nsAccessibilityService.h"
  11 #include "mozilla/a11y/Role.h"
  12 #include "States.h"
  13
  14 #include "nsLayoutUtils.h"
  15
  16 using namespace mozilla;
  17 using namespace mozilla::a11y;
  18
  19 ////////////////////////////////////////////////////////////////////////////////
  20 // HTMLListAccessible
  21 ////////////////////////////////////////////////////////////////////////////////
  22
  23 role HTMLListAccessible::NativeRole() const {
  24   a11y::role r = GetAccService()->MarkupRole(mContent);
  25   return r != roles::NOTHING ? r : roles::LIST;
  26 }
  27
  28 uint64_t HTMLListAccessible::NativeState() const {
  29   return HyperTextAccessible::NativeState() | states::READONLY;
  30 }
  31
  32 ////////////////////////////////////////////////////////////////////////////////
  33 // HTMLLIAccessible
  34 ////////////////////////////////////////////////////////////////////////////////
  35
  36 HTMLLIAccessible::HTMLLIAccessible(nsIContent* aContent, DocAccessible* aDoc)
  37     : HyperTextAccessible(aContent, aDoc) {
  38   mType = eHTMLLiType;
  39 }
  40
  41 role HTMLLIAccessible::NativeRole() const {
  42   a11y::role r = GetAccService()->MarkupRole(mContent);
  43   return r != roles::NOTHING ? r : roles::LISTITEM;
  44 }
  45
  46 uint64_t HTMLLIAccessible::NativeState() const {
  47   return HyperTextAccessible::NativeState() | states::READONLY;
  48 }
  49
  50 nsRect HTMLLIAccessible::BoundsInAppUnits() const {
  51   nsRect rect = AccessibleWrap::BoundsInAppUnits();
  52
  53   LocalAccessible* bullet = Bullet();
  54   nsIFrame* frame = GetFrame();
  55   MOZ_ASSERT(!(bullet && !frame), "Cannot have a bullet if there is no frame");
  56
  57   if (bullet && frame &&
  58       frame->StyleList()->mListStylePosition !=
  59           StyleListStylePosition::Inside) {
  60     nsRect bulletRect = bullet->BoundsInAppUnits();
  61     return rect.Union(bulletRect);
  62   }
  63
  64   return rect;
  65 }
  66
  67 LocalAccessible* HTMLLIAccessible::Bullet() const {
  68   LocalAccessible* firstChild = LocalFirstChild();
  69   if (firstChild && firstChild->NativeRole() == roles::LISTITEM_MARKER) {
  70     return firstChild;
  71   }
  72
  73   return nullptr;
  74 }
  75
  76 ////////////////////////////////////////////////////////////////////////////////
  77 // HTMLListBulletAccessible
  78 ////////////////////////////////////////////////////////////////////////////////
  79 HTMLListBulletAccessible::HTMLListBulletAccessible(nsIContent* aContent,
  80                                                    DocAccessible* aDoc)
  81     : LeafAccessible(aContent, aDoc) {
  82   mGenericTypes |= eText;
  83 }
  84
  85 ////////////////////////////////////////////////////////////////////////////////
  86 // HTMLListBulletAccessible: LocalAccessible
  87
  88 ENameValueFlag HTMLListBulletAccessible::Name(nsString& aName) const {
  89   nsLayoutUtils::GetMarkerSpokenText(mContent, aName);
  90   return eNameOK;
  91 }
  92
  93 role HTMLListBulletAccessible::NativeRole() const {
  94   return roles::LISTITEM_MARKER;
  95 }
  96
  97 uint64_t HTMLListBulletAccessible::NativeState() const {
  98   return LeafAccessible::NativeState() | states::READONLY;
  99 }
 100
 101 already_AddRefed<AccAttributes> HTMLListBulletAccessible::NativeAttributes() {
 102   RefPtr<AccAttributes> attributes = new AccAttributes();
 103   return attributes.forget();
 104 }
 105
 106 void HTMLListBulletAccessible::AppendTextTo(nsAString& aText,
 107                                             uint32_t aStartOffset,
 108                                             uint32_t aLength) {
 109   nsAutoString bulletText;
 110   Name(bulletText);
 111   aText.Append(Substring(bulletText, aStartOffset, aLength));
 112 }