mirror of
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104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "EventTree.h"
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#include "LocalAccessible-inl.h"
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#include "EmbeddedObjCollector.h"
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#include "NotificationController.h"
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#include "nsEventShell.h"
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#include "DocAccessible.h"
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#include "DocAccessible-inl.h"
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#ifdef A11Y_LOG
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# include "Logging.h"
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#endif
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#include "mozilla/UniquePtr.h"
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using namespace mozilla;
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using namespace mozilla::a11y;
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////////////////////////////////////////////////////////////////////////////////
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// TreeMutation class
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TreeMutation::TreeMutation(LocalAccessible* aParent, bool aNoEvents)
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: mParent(aParent),
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mStartIdx(UINT32_MAX),
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mStateFlagsCopy(mParent->mStateFlags),
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mQueueEvents(!aNoEvents) {
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#ifdef DEBUG
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mIsDone = false;
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#endif
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mParent->mStateFlags |= LocalAccessible::eKidsMutating;
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}
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TreeMutation::~TreeMutation() {
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MOZ_ASSERT(mIsDone, "Done() must be called explicitly");
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}
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void TreeMutation::AfterInsertion(LocalAccessible* aChild) {
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MOZ_ASSERT(aChild->LocalParent() == mParent);
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if (static_cast<uint32_t>(aChild->mIndexInParent) < mStartIdx) {
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mStartIdx = aChild->mIndexInParent + 1;
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}
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if (!mQueueEvents) {
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return;
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}
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RefPtr<AccShowEvent> ev = new AccShowEvent(aChild);
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DebugOnly<bool> added = Controller()->QueueMutationEvent(ev);
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MOZ_ASSERT(added);
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aChild->SetShowEventTarget(true);
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}
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void TreeMutation::BeforeRemoval(LocalAccessible* aChild, bool aNoShutdown) {
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MOZ_ASSERT(aChild->LocalParent() == mParent);
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if (static_cast<uint32_t>(aChild->mIndexInParent) < mStartIdx) {
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mStartIdx = aChild->mIndexInParent;
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}
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if (!mQueueEvents) {
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return;
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}
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RefPtr<AccHideEvent> ev = new AccHideEvent(aChild, !aNoShutdown);
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if (Controller()->QueueMutationEvent(ev)) {
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aChild->SetHideEventTarget(true);
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}
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}
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void TreeMutation::Done() {
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MOZ_ASSERT(mParent->mStateFlags & LocalAccessible::eKidsMutating);
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mParent->mStateFlags &= ~LocalAccessible::eKidsMutating;
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uint32_t length = mParent->mChildren.Length();
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#ifdef DEBUG
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for (uint32_t idx = 0; idx < mStartIdx && idx < length; idx++) {
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MOZ_ASSERT(
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mParent->mChildren[idx]->mIndexInParent == static_cast<int32_t>(idx),
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"Wrong index detected");
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}
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#endif
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for (uint32_t idx = mStartIdx; idx < length; idx++) {
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mParent->mChildren[idx]->mIndexOfEmbeddedChild = -1;
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}
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for (uint32_t idx = 0; idx < length; idx++) {
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mParent->mChildren[idx]->mStateFlags |= LocalAccessible::eGroupInfoDirty;
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}
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mParent->mEmbeddedObjCollector = nullptr;
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mParent->mStateFlags |= mStateFlagsCopy & LocalAccessible::eKidsMutating;
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#ifdef DEBUG
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mIsDone = true;
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#endif
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}
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