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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 "Accessible.h"
using namespace mozilla::a11y;
uint32_t
EmbeddedObjCollector::Count()
{
EnsureNGetIndex(nullptr);
return mObjects.Length();
}
Accessible*
EmbeddedObjCollector::GetAccessibleAt(uint32_t aIndex)
{
Accessible* accessible = mObjects.SafeElementAt(aIndex, nullptr);
if (accessible)
return accessible;
return EnsureNGetObject(aIndex);
}
Accessible*
EmbeddedObjCollector::EnsureNGetObject(uint32_t aIndex)
{
uint32_t childCount = mRoot->ChildCount();
while (mRootChildIdx < childCount) {
Accessible* child = mRoot->GetChildAt(mRootChildIdx++);
if (child->IsText())
continue;
AppendObject(child);
if (mObjects.Length() - 1 == aIndex)
return mObjects[aIndex];
}
return nullptr;
}
int32_t
EmbeddedObjCollector::EnsureNGetIndex(Accessible* aAccessible)
{
uint32_t childCount = mRoot->ChildCount();
while (mRootChildIdx < childCount) {
Accessible* child = mRoot->GetChildAt(mRootChildIdx++);
if (child->IsText())
continue;
AppendObject(child);
if (child == aAccessible)
return mObjects.Length() - 1;
}
return -1;
}
int32_t
EmbeddedObjCollector::GetIndexAt(Accessible* aAccessible)
{
if (aAccessible->mParent != mRoot)
return -1;
MOZ_ASSERT(!aAccessible->IsProxy());
if (aAccessible->mInt.mIndexOfEmbeddedChild != -1)
return aAccessible->mInt.mIndexOfEmbeddedChild;
return !aAccessible->IsText() ? EnsureNGetIndex(aAccessible) : -1;
}
void
EmbeddedObjCollector::AppendObject(Accessible* aAccessible)
{
MOZ_ASSERT(!aAccessible->IsProxy());
aAccessible->mInt.mIndexOfEmbeddedChild = mObjects.Length();
mObjects.AppendElement(aAccessible);
}
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