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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "EventTree.h"
#include "LocalAccessible-inl.h"
#include "EmbeddedObjCollector.h"
#include "NotificationController.h"
#include "nsEventShell.h"
#include "DocAccessible.h"
#include "DocAccessible-inl.h"
#ifdef A11Y_LOG
# include "Logging.h"
#endif
#include "mozilla/UniquePtr.h"
using namespace mozilla;
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// TreeMutation class
TreeMutation::TreeMutation(LocalAccessible* aParent, bool aNoEvents)
: mParent(aParent),
mStartIdx(UINT32_MAX),
mStateFlagsCopy(mParent->mStateFlags),
mQueueEvents(!aNoEvents) {
#ifdef DEBUG
mIsDone = false;
#endif
mParent->mStateFlags |= LocalAccessible::eKidsMutating;
}
TreeMutation::~TreeMutation() {
MOZ_ASSERT(mIsDone, "Done() must be called explicitly");
}
void TreeMutation::AfterInsertion(LocalAccessible* aChild) {
MOZ_ASSERT(aChild->LocalParent() == mParent);
if (static_cast<uint32_t>(aChild->mIndexInParent) < mStartIdx) {
mStartIdx = aChild->mIndexInParent + 1;
}
if (!mQueueEvents) {
return;
}
RefPtr<AccShowEvent> ev = new AccShowEvent(aChild);
DebugOnly<bool> added = Controller()->QueueMutationEvent(ev);
MOZ_ASSERT(added);
aChild->SetShowEventTarget(true);
}
void TreeMutation::BeforeRemoval(LocalAccessible* aChild, bool aNoShutdown) {
MOZ_ASSERT(aChild->LocalParent() == mParent);
if (static_cast<uint32_t>(aChild->mIndexInParent) < mStartIdx) {
mStartIdx = aChild->mIndexInParent;
}
if (!mQueueEvents) {
return;
}
RefPtr<AccHideEvent> ev = new AccHideEvent(aChild, !aNoShutdown);
if (Controller()->QueueMutationEvent(ev)) {
aChild->SetHideEventTarget(true);
}
}
void TreeMutation::Done() {
MOZ_ASSERT(mParent->mStateFlags & LocalAccessible::eKidsMutating);
mParent->mStateFlags &= ~LocalAccessible::eKidsMutating;
uint32_t length = mParent->mChildren.Length();
#ifdef DEBUG
for (uint32_t idx = 0; idx < mStartIdx && idx < length; idx++) {
MOZ_ASSERT(
mParent->mChildren[idx]->mIndexInParent == static_cast<int32_t>(idx),
"Wrong index detected");
}
#endif
for (uint32_t idx = mStartIdx; idx < length; idx++) {
mParent->mChildren[idx]->mIndexOfEmbeddedChild = -1;
}
for (uint32_t idx = 0; idx < length; idx++) {
mParent->mChildren[idx]->mStateFlags |= LocalAccessible::eGroupInfoDirty;
}
mParent->mEmbeddedObjCollector = nullptr;
mParent->mStateFlags |= mStateFlagsCopy & LocalAccessible::eKidsMutating;
#ifdef DEBUG
mIsDone = true;
#endif
}
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