The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/accessible/src/base/AccCollector.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,117 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +#include "AccCollector.h"
     1.9 +
    1.10 +#include "Accessible.h"
    1.11 +
    1.12 +using namespace mozilla::a11y;
    1.13 +
    1.14 +////////////////////////////////////////////////////////////////////////////////
    1.15 +// nsAccCollector
    1.16 +////////////////////////////////////////////////////////////////////////////////
    1.17 +
    1.18 +AccCollector::
    1.19 +  AccCollector(Accessible* aRoot, filters::FilterFuncPtr aFilterFunc) :
    1.20 +  mFilterFunc(aFilterFunc), mRoot(aRoot), mRootChildIdx(0)
    1.21 +{
    1.22 +}
    1.23 +
    1.24 +AccCollector::~AccCollector()
    1.25 +{
    1.26 +}
    1.27 +
    1.28 +uint32_t
    1.29 +AccCollector::Count()
    1.30 +{
    1.31 +  EnsureNGetIndex(nullptr);
    1.32 +  return mObjects.Length();
    1.33 +}
    1.34 +
    1.35 +Accessible*
    1.36 +AccCollector::GetAccessibleAt(uint32_t aIndex)
    1.37 +{
    1.38 +  Accessible* accessible = mObjects.SafeElementAt(aIndex, nullptr);
    1.39 +  if (accessible)
    1.40 +    return accessible;
    1.41 +
    1.42 +  return EnsureNGetObject(aIndex);
    1.43 +}
    1.44 +
    1.45 +int32_t
    1.46 +AccCollector::GetIndexAt(Accessible* aAccessible)
    1.47 +{
    1.48 +  int32_t index = mObjects.IndexOf(aAccessible);
    1.49 +  if (index != -1)
    1.50 +    return index;
    1.51 +
    1.52 +  return EnsureNGetIndex(aAccessible);
    1.53 +}
    1.54 +
    1.55 +////////////////////////////////////////////////////////////////////////////////
    1.56 +// nsAccCollector protected
    1.57 +
    1.58 +Accessible*
    1.59 +AccCollector::EnsureNGetObject(uint32_t aIndex)
    1.60 +{
    1.61 +  uint32_t childCount = mRoot->ChildCount();
    1.62 +  while (mRootChildIdx < childCount) {
    1.63 +    Accessible* child = mRoot->GetChildAt(mRootChildIdx++);
    1.64 +    if (!(mFilterFunc(child) & filters::eMatch))
    1.65 +      continue;
    1.66 +
    1.67 +    AppendObject(child);
    1.68 +    if (mObjects.Length() - 1 == aIndex)
    1.69 +      return mObjects[aIndex];
    1.70 +  }
    1.71 +
    1.72 +  return nullptr;
    1.73 +}
    1.74 +
    1.75 +int32_t
    1.76 +AccCollector::EnsureNGetIndex(Accessible* aAccessible)
    1.77 +{
    1.78 +  uint32_t childCount = mRoot->ChildCount();
    1.79 +  while (mRootChildIdx < childCount) {
    1.80 +    Accessible* child = mRoot->GetChildAt(mRootChildIdx++);
    1.81 +    if (!(mFilterFunc(child) & filters::eMatch))
    1.82 +      continue;
    1.83 +
    1.84 +    AppendObject(child);
    1.85 +    if (child == aAccessible)
    1.86 +      return mObjects.Length() - 1;
    1.87 +  }
    1.88 +
    1.89 +  return -1;
    1.90 +}
    1.91 +
    1.92 +void
    1.93 +AccCollector::AppendObject(Accessible* aAccessible)
    1.94 +{
    1.95 +  mObjects.AppendElement(aAccessible);
    1.96 +}
    1.97 +
    1.98 +////////////////////////////////////////////////////////////////////////////////
    1.99 +// EmbeddedObjCollector
   1.100 +////////////////////////////////////////////////////////////////////////////////
   1.101 +
   1.102 +int32_t
   1.103 +EmbeddedObjCollector::GetIndexAt(Accessible* aAccessible)
   1.104 +{
   1.105 +  if (aAccessible->mParent != mRoot)
   1.106 +    return -1;
   1.107 +
   1.108 +  if (aAccessible->mIndexOfEmbeddedChild != -1)
   1.109 +    return aAccessible->mIndexOfEmbeddedChild;
   1.110 +
   1.111 +  return mFilterFunc(aAccessible) & filters::eMatch ?
   1.112 +    EnsureNGetIndex(aAccessible) : -1;
   1.113 +}
   1.114 +
   1.115 +void
   1.116 +EmbeddedObjCollector::AppendObject(Accessible* aAccessible)
   1.117 +{
   1.118 +  aAccessible->mIndexOfEmbeddedChild = mObjects.Length();
   1.119 +  mObjects.AppendElement(aAccessible);
   1.120 +}