tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

EmbeddedObjCollector.cpp (1843B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 #include "EmbeddedObjCollector.h"
      6 
      7 #include "LocalAccessible.h"
      8 
      9 using namespace mozilla::a11y;
     10 
     11 uint32_t EmbeddedObjCollector::Count() {
     12  EnsureNGetIndex(nullptr);
     13  return mObjects.Length();
     14 }
     15 
     16 LocalAccessible* EmbeddedObjCollector::GetAccessibleAt(uint32_t aIndex) {
     17  LocalAccessible* accessible = mObjects.SafeElementAt(aIndex, nullptr);
     18  if (accessible) return accessible;
     19 
     20  return EnsureNGetObject(aIndex);
     21 }
     22 
     23 LocalAccessible* EmbeddedObjCollector::EnsureNGetObject(uint32_t aIndex) {
     24  uint32_t childCount = mRoot->ChildCount();
     25  while (mRootChildIdx < childCount) {
     26    LocalAccessible* child = mRoot->LocalChildAt(mRootChildIdx++);
     27    if (child->IsText()) continue;
     28 
     29    AppendObject(child);
     30    if (mObjects.Length() - 1 == aIndex) return mObjects[aIndex];
     31  }
     32 
     33  return nullptr;
     34 }
     35 
     36 int32_t EmbeddedObjCollector::EnsureNGetIndex(LocalAccessible* aAccessible) {
     37  uint32_t childCount = mRoot->ChildCount();
     38  while (mRootChildIdx < childCount) {
     39    LocalAccessible* child = mRoot->LocalChildAt(mRootChildIdx++);
     40    if (child->IsText()) continue;
     41 
     42    AppendObject(child);
     43    if (child == aAccessible) return mObjects.Length() - 1;
     44  }
     45 
     46  return -1;
     47 }
     48 
     49 int32_t EmbeddedObjCollector::GetIndexAt(LocalAccessible* aAccessible) {
     50  if (aAccessible->mParent != mRoot) return -1;
     51 
     52  if (aAccessible->mIndexOfEmbeddedChild != -1) {
     53    return aAccessible->mIndexOfEmbeddedChild;
     54  }
     55 
     56  return !aAccessible->IsText() ? EnsureNGetIndex(aAccessible) : -1;
     57 }
     58 
     59 void EmbeddedObjCollector::AppendObject(LocalAccessible* aAccessible) {
     60  aAccessible->mIndexOfEmbeddedChild = mObjects.Length();
     61  mObjects.AppendElement(aAccessible);
     62 }