From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/layers/apz/src/FocusTarget.h | 71 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 gfx/layers/apz/src/FocusTarget.h (limited to 'gfx/layers/apz/src/FocusTarget.h') diff --git a/gfx/layers/apz/src/FocusTarget.h b/gfx/layers/apz/src/FocusTarget.h new file mode 100644 index 0000000000..f4caa5d070 --- /dev/null +++ b/gfx/layers/apz/src/FocusTarget.h @@ -0,0 +1,71 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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_layers_FocusTarget_h +#define mozilla_layers_FocusTarget_h + +#include // for int32_t, uint32_t + +#include "mozilla/DefineEnum.h" // for MOZ_DEFINE_ENUM +#include "mozilla/layers/ScrollableLayerGuid.h" // for ViewID +#include "mozilla/Variant.h" // for Variant +#include "mozilla/Maybe.h" // for Maybe + +namespace mozilla { + +class PresShell; + +namespace layers { + +/** + * This class is used for communicating information about the currently focused + * element of a document and the scrollable frames to use when keyboard + * scrolling it. It is created on the main thread at paint-time, but is then + * passed over IPC to the compositor/APZ code. + */ +class FocusTarget final { + public: + struct ScrollTargets { + ScrollableLayerGuid::ViewID mHorizontal; + ScrollableLayerGuid::ViewID mVertical; + + bool operator==(const ScrollTargets& aRhs) const { + return (mHorizontal == aRhs.mHorizontal && mVertical == aRhs.mVertical); + } + }; + + // We need this to represent the case where mData has no focus target data + // because we can't have an empty variant + struct NoFocusTarget { + bool operator==(const NoFocusTarget& aRhs) const { return true; } + }; + + FocusTarget(); + + /** + * Construct a focus target for the specified top level PresShell + */ + FocusTarget(PresShell* aRootPresShell, uint64_t aFocusSequenceNumber); + + bool operator==(const FocusTarget& aRhs) const; + + const char* Type() const; + + public: + // The content sequence number recorded at the time of this class's creation + uint64_t mSequenceNumber; + + // Whether there are keydown, keypress, or keyup event listeners + // in the event target chain of the focused element + bool mFocusHasKeyEventListeners; + + mozilla::Variant mData; +}; + +} // namespace layers +} // namespace mozilla + +#endif // mozilla_layers_FocusTarget_h -- cgit v1.2.3