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 "DocAccessible.h"
  11 #include "EventTree.h"
  12 #include "nsAccUtils.h"
  13 #include "nsPersistentProperties.h"
  14 #include "Role.h"
  15 #include "States.h"
  16
  17 #include "nsLayoutUtils.h"
  18
  19 using namespace mozilla;
  20 using namespace mozilla::a11y;
  21
  22 ////////////////////////////////////////////////////////////////////////////////
  23 // HTMLListAccessible
  24 ////////////////////////////////////////////////////////////////////////////////
  25
  26 role HTMLListAccessible::NativeRole() const {
  27   a11y::role r = GetAccService()->MarkupRole(mContent);
  28   return r != roles::NOTHING ? r : roles::LIST;
  29 }
  30
  31 uint64_t HTMLListAccessible::NativeState() const {
  32   return HyperTextAccessibleWrap::NativeState() | states::READONLY;
  33 }
  34
  35 ////////////////////////////////////////////////////////////////////////////////
  36 // HTMLLIAccessible
  37 ////////////////////////////////////////////////////////////////////////////////
  38
  39 HTMLLIAccessible::HTMLLIAccessible(nsIContent* aContent, DocAccessible* aDoc)
  40     : HyperTextAccessibleWrap(aContent, aDoc) {
  41   mType = eHTMLLiType;
  42 }
  43
  44 role HTMLLIAccessible::NativeRole() const {
  45   a11y::role r = GetAccService()->MarkupRole(mContent);
  46   return r != roles::NOTHING ? r : roles::LISTITEM;
  47 }
  48
  49 uint64_t HTMLLIAccessible::NativeState() const {
  50   return HyperTextAccessibleWrap::NativeState() | states::READONLY;
  51 }
  52
  53 nsRect HTMLLIAccessible::BoundsInAppUnits() const {
  54   nsRect rect = AccessibleWrap::BoundsInAppUnits();
  55
  56   LocalAccessible* bullet = Bullet();
  57   nsIFrame* frame = GetFrame();
  58   MOZ_ASSERT(!(bullet && !frame), "Cannot have a bullet if there is no frame");
  59
  60   if (bullet && frame &&
  61       frame->StyleList()->mListStylePosition !=
  62           NS_STYLE_LIST_STYLE_POSITION_INSIDE) {
  63     nsRect bulletRect = bullet->BoundsInAppUnits();
  64     return rect.Union(bulletRect);
  65   }
  66
  67   return rect;
  68 }
  69
  70 LocalAccessible* HTMLLIAccessible::Bullet() const {
  71   LocalAccessible* firstChild = LocalFirstChild();
  72   if (firstChild && firstChild->NativeRole() == roles::LISTITEM_MARKER) {
  73     return firstChild;
  74   }
  75
  76   return nullptr;
  77 }
  78
  79 ////////////////////////////////////////////////////////////////////////////////
  80 // HTMLListBulletAccessible
  81 ////////////////////////////////////////////////////////////////////////////////
  82 HTMLListBulletAccessible::HTMLListBulletAccessible(nsIContent* aContent,
  83                                                    DocAccessible* aDoc)
  84     : LeafAccessible(aContent, aDoc) {
  85   mGenericTypes |= eText;
  86 }
  87
  88 ////////////////////////////////////////////////////////////////////////////////
  89 // HTMLListBulletAccessible: LocalAccessible
  90
  91 ENameValueFlag HTMLListBulletAccessible::Name(nsString& aName) const {
  92   nsLayoutUtils::GetMarkerSpokenText(mContent, aName);
  93   return eNameOK;
  94 }
  95
  96 role HTMLListBulletAccessible::NativeRole() const {
  97   return roles::LISTITEM_MARKER;
  98 }
  99
 100 uint64_t HTMLListBulletAccessible::NativeState() const {
 101   return LeafAccessible::NativeState() | states::READONLY;
 102 }
 103
 104 already_AddRefed<AccAttributes> HTMLListBulletAccessible::NativeAttributes() {
 105   RefPtr<AccAttributes> attributes = new AccAttributes();
 106   return attributes.forget();
 107 }
 108
 109 void HTMLListBulletAccessible::AppendTextTo(nsAString& aText,
 110                                             uint32_t aStartOffset,
 111                                             uint32_t aLength) {
 112   nsAutoString bulletText;
 113   Name(bulletText);
 114   aText.Append(Substring(bulletText, aStartOffset, aLength));
 115 }