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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "EmbeddedObjCollector.h"
#include "LocalAccessible.h"
using namespace mozilla::a11y;
uint32_t EmbeddedObjCollector::Count() {
EnsureNGetIndex(nullptr);
return mObjects.Length();
}
LocalAccessible* EmbeddedObjCollector::GetAccessibleAt(uint32_t aIndex) {
LocalAccessible* accessible = mObjects.SafeElementAt(aIndex, nullptr);
if (accessible) return accessible;
return EnsureNGetObject(aIndex);
}
LocalAccessible* EmbeddedObjCollector::EnsureNGetObject(uint32_t aIndex) {
uint32_t childCount = mRoot->ChildCount();
while (mRootChildIdx < childCount) {
LocalAccessible* child = mRoot->LocalChildAt(mRootChildIdx++);
if (child->IsText()) continue;
AppendObject(child);
if (mObjects.Length() - 1 == aIndex) return mObjects[aIndex];
}
return nullptr;
}
int32_t EmbeddedObjCollector::EnsureNGetIndex(LocalAccessible* aAccessible) {
uint32_t childCount = mRoot->ChildCount();
while (mRootChildIdx < childCount) {
LocalAccessible* child = mRoot->LocalChildAt(mRootChildIdx++);
if (child->IsText()) continue;
AppendObject(child);
if (child == aAccessible) return mObjects.Length() - 1;
}
return -1;
}
int32_t EmbeddedObjCollector::GetIndexAt(LocalAccessible* aAccessible) {
if (aAccessible->mParent != mRoot) return -1;
MOZ_ASSERT(!aAccessible->IsProxy());
if (aAccessible->mIndexOfEmbeddedChild != -1) {
return aAccessible->mIndexOfEmbeddedChild;
}
return !aAccessible->IsText() ? EnsureNGetIndex(aAccessible) : -1;
}
void EmbeddedObjCollector::AppendObject(LocalAccessible* aAccessible) {
MOZ_ASSERT(!aAccessible->IsProxy());
aAccessible->mIndexOfEmbeddedChild = mObjects.Length();
mObjects.AppendElement(aAccessible);
}