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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/input/android/input_receiver_data.h"
#include <utility>
#include "base/android/android_info.h"
#include "components/input/features.h"
namespace input {
namespace {
// Delay used to post a self destruction task for Android 16+.
constexpr base::FeatureParam<int> kDestructionDelaySec{
&features::kInputOnViz, /*name=*/"input_receiver_destruction_delay_sec",
/*default_value=*/10};
} // namespace
InputReceiverData::InputReceiverData(
scoped_refptr<gfx::SurfaceControl::Surface> parent_input_sc,
scoped_refptr<gfx::SurfaceControl::Surface> input_sc,
ScopedInputTransferToken browser_input_token,
std::unique_ptr<AndroidInputCallback> android_input_callback,
ScopedInputReceiverCallbacks callbacks,
ScopedInputReceiver receiver,
ScopedInputTransferToken viz_input_token)
: parent_input_sc_(parent_input_sc),
input_sc_(input_sc),
browser_input_token_(std::move(browser_input_token)),
android_input_callback_(std::move(android_input_callback)),
callbacks_(std::move(callbacks)),
receiver_(std::move(receiver)),
viz_input_token_(std::move(viz_input_token)) {
android_input_callback_->AddObserver(this);
}
InputReceiverData::~InputReceiverData() {
android_input_callback_->RemoveObserver(this);
}
void InputReceiverData::OnMotionEvent(
const base::android::ScopedInputEvent& input_event) {
has_seen_events_ = true;
}
void InputReceiverData::TryDestroySelf(
std::unique_ptr<InputReceiverData> receiver_data) {
CHECK(receiver_data);
if (!has_seen_events_) {
// InputReceiverData gets destroyed here.
return;
}
has_seen_events_ = false;
base::SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&InputReceiverData::TryDestroySelf,
base::Unretained(receiver_data.get()),
std::move(receiver_data)),
base::Seconds(kDestructionDelaySec.Get()));
}
void InputReceiverData::OnDestroyedCompositorFrameSink(
std::unique_ptr<InputReceiverData> receiver) {
if (base::android::android_info::sdk_int() >=
base::android::android_info::SdkVersion::SDK_VERSION_BAKLAVA) {
// For Android 16+ where input receiver could be destroyed, `receiver` would
// have non-nullptr in it, which should be cleanup eventually after seeing
// the full touch sequence or after giving up upon new input events to come.
CHECK_EQ(receiver.get(), this);
// TODO(431139615): Guard this delayed destruction logic with appropriate
// Android version once it has been fixed on Android side.
has_seen_events_ = false;
base::SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&InputReceiverData::TryDestroySelf,
base::Unretained(receiver.get()), std::move(receiver)),
base::Seconds(kDestructionDelaySec.Get()));
return;
}
CHECK(!receiver);
pending_destruction_ = true;
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(&InputReceiverData::DetachInputSurface,
weak_ptr_factory_.GetWeakPtr()));
}
void InputReceiverData::AttachToFrameSink(
const viz::FrameSinkId& root_frame_sink_id,
scoped_refptr<gfx::SurfaceControl::Surface> parent_input_sc) {
DCHECK(!android_input_callback_->root_frame_sink_id().is_valid());
// In case a new root compositor frame sink gets created before
// DetachInputSurface had a chance to run. In this case DetachInputSurface
// shouldn't do anything in the pending detach task.
pending_destruction_ = false;
parent_input_sc_ = parent_input_sc;
gfx::SurfaceControl::Transaction transaction;
transaction.SetParent(*input_sc_, parent_input_sc_.get());
transaction.Apply();
android_input_callback_->set_root_frame_sink_id(root_frame_sink_id);
}
void InputReceiverData::DetachInputSurface() {
if (!pending_destruction_) {
return;
}
pending_destruction_ = false;
gfx::SurfaceControl::Transaction transaction;
transaction.SetParent(*input_sc_, nullptr);
transaction.Apply();
parent_input_sc_.reset();
android_input_callback_->set_root_frame_sink_id(viz::FrameSinkId());
}
} // namespace input
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