src/ui/scenic/lib/input/input_system.h

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SRC_UI_SCENIC_LIB_INPUT_INPUT_SYSTEM_H_
#define SRC_UI_SCENIC_LIB_INPUT_INPUT_SYSTEM_H_

#include <optional>

#include "src/ui/scenic/lib/input/mouse_system.h"
#include "src/ui/scenic/lib/input/pointerinjector_registry.h"
#include "src/ui/scenic/lib/input/touch_system.h"
#include "src/ui/scenic/lib/view_tree/snapshot_types.h"

namespace scenic_impl::input {

// Tracks and coordinates input APIs.
class InputSystem {
 public:
  explicit InputSystem(sys::ComponentContext* context, inspect::Node& inspect_node,
                       RequestFocusFunc request_focus);
  ~InputSystem() = default;

  void OnNewViewTreeSnapshot(std::shared_ptr<const view_tree::Snapshot> snapshot) {
    pointerinjector_registry_.OnNewViewTreeSnapshot(snapshot);
    view_tree_snapshot_ = std::move(snapshot);
  }

  void RegisterTouchSource(
      fidl::InterfaceRequest<fuchsia::ui::pointer::TouchSource> touch_source_request,
      zx_koid_t client_view_ref_koid) {
    touch_system_.RegisterTouchSource(std::move(touch_source_request), client_view_ref_koid);
  }

  void RegisterMouseSource(
      fidl::InterfaceRequest<fuchsia::ui::pointer::MouseSource> mouse_source_request,
      zx_koid_t client_view_ref_koid) {
    mouse_system_.RegisterMouseSource(std::move(mouse_source_request), client_view_ref_koid);
  }

  // For tests.
  // TODO(https://fxbug.dev/42152433): Remove when integration tests are properly separated out.
  void RegisterPointerinjector(
      fuchsia::ui::pointerinjector::Config config,
      fidl::InterfaceRequest<fuchsia::ui::pointerinjector::Device> injector,
      fuchsia::ui::pointerinjector::Registry::RegisterCallback callback) {
    pointerinjector_registry_.Register(std::move(config), std::move(injector), std::move(callback));
  }

  // Accessor for tests.
  // TODO(https://fxbug.dev/42152433): Remove when integration tests are properly separated out.
  scenic_impl::input::TouchSystem& touch_system() { return touch_system_; }

 private:
  const RequestFocusFunc request_focus_;
  HitTester hit_tester_;
  MouseSystem mouse_system_;
  TouchSystem touch_system_;
  PointerinjectorRegistry pointerinjector_registry_;

  std::shared_ptr<const view_tree::Snapshot> view_tree_snapshot_;
};

}  // namespace scenic_impl::input

#endif  // SRC_UI_SCENIC_LIB_INPUT_INPUT_SYSTEM_H_