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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /accessible/base/EventTree.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | accessible/base/EventTree.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/accessible/base/EventTree.h b/accessible/base/EventTree.h new file mode 100644 index 0000000000..bd9976b4fb --- /dev/null +++ b/accessible/base/EventTree.h @@ -0,0 +1,61 @@ +/* -*- 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/. */ + +#ifndef mozilla_a11y_EventTree_h_ +#define mozilla_a11y_EventTree_h_ + +#include "AccEvent.h" +#include "LocalAccessible.h" + +#include "mozilla/a11y/DocAccessible.h" +#include "mozilla/RefPtr.h" +#include "mozilla/UniquePtr.h" + +namespace mozilla { +namespace a11y { + +class NotificationController; + +/** + * This class makes sure required tasks are done before and after tree + * mutations. Currently this only includes group info invalidation. You must + * have an object of this class on the stack when calling methods that mutate + * the accessible tree. + */ +class TreeMutation final { + public: + static const bool kNoEvents = true; + static const bool kNoShutdown = true; + + explicit TreeMutation(LocalAccessible* aParent, bool aNoEvents = false); + ~TreeMutation(); + + void AfterInsertion(LocalAccessible* aChild); + void BeforeRemoval(LocalAccessible* aChild, bool aNoShutdown = false); + void Done(); + + private: + NotificationController* Controller() const { + return mParent->Document()->Controller(); + } + + LocalAccessible* mParent; + uint32_t mStartIdx; + uint32_t mStateFlagsCopy; + + /* + * True if mutation events should be queued. + */ + bool mQueueEvents; + +#ifdef DEBUG + bool mIsDone; +#endif +}; + +} // namespace a11y +} // namespace mozilla + +#endif // mozilla_a11y_EventQueue_h_ |