accessible/generic/TextLeafAccessible.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "TextLeafAccessible.h"
   7
   8 #include "nsAccUtils.h"
   9 #include "DocAccessible.h"
  10 #include "Role.h"
  11
  12 using namespace mozilla::a11y;
  13
  14 ////////////////////////////////////////////////////////////////////////////////
  15 // TextLeafAccessible
  16 ////////////////////////////////////////////////////////////////////////////////
  17
  18 TextLeafAccessible::
  19   TextLeafAccessible(nsIContent* aContent, DocAccessible* aDoc) :
  20   LinkableAccessible(aContent, aDoc)
  21 {
  22   mType = eTextLeafType;
  23 }
  24
  25 TextLeafAccessible::~TextLeafAccessible()
  26 {
  27 }
  28
  29 role
  30 TextLeafAccessible::NativeRole()
  31 {
  32   nsIFrame* frame = GetFrame();
  33   if (frame && frame->IsGeneratedContentFrame())
  34     return roles::STATICTEXT;
  35
  36   return roles::TEXT_LEAF;
  37 }
  38
  39 void
  40 TextLeafAccessible::AppendTextTo(nsAString& aText, uint32_t aStartOffset,
  41                                  uint32_t aLength)
  42 {
  43   aText.Append(Substring(mText, aStartOffset, aLength));
  44 }
  45
  46 ENameValueFlag
  47 TextLeafAccessible::Name(nsString& aName)
  48 {
  49   // Text node, ARIA can't be used.
  50   aName = mText;
  51   return eNameOK;
  52 }
  53
  54 void
  55 TextLeafAccessible::CacheChildren()
  56 {
  57   // No children for text accessible.
  58 }