bin/ui/input_reader/input_reader.h

// Copyright 2016 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 GARNET_BIN_UI_INPUT_READER_INPUT_READER_H_
#define GARNET_BIN_UI_INPUT_READER_INPUT_READER_H_

#include <map>
#include <utility>

#include <async/auto_wait.h>
#include "garnet/bin/ui/input_reader/input_interpreter.h"
#include "lib/fsl/io/device_watcher.h"
#include "lib/fxl/macros.h"
#include "lib/ui/input/fidl/input_device_registry.fidl.h"
#include "lib/ui/input/fidl/input_reports.fidl.h"

namespace mozart {
namespace input {

class InputReader {
 public:
  InputReader(mozart::InputDeviceRegistry* registry,
              bool ignore_console = false);
  ~InputReader();
  void Start();

 private:
  class DeviceInfo {
   public:
    DeviceInfo(std::unique_ptr<InputInterpreter> interpreter,
               std::unique_ptr<async::AutoWait> waiter);
    ~DeviceInfo();

    InputInterpreter* interpreter() { return interpreter_.get(); }

   private:
    std::unique_ptr<InputInterpreter> interpreter_;
    std::unique_ptr<async::AutoWait> waiter_;

    FXL_DISALLOW_COPY_AND_ASSIGN(DeviceInfo);
  };

  void WatchDisplayOwnershipChanges(int dir_fd);

  void DeviceAdded(std::unique_ptr<InputInterpreter> interpreter);
  void DeviceRemoved(zx_handle_t handle);

  async_wait_result_t OnDeviceHandleReady(zx_handle_t handle,
                                          zx_status_t status,
                                          const zx_packet_signal_t* signal);
  async_wait_result_t OnDisplayHandleReady(zx_status_t status,
                                           const zx_packet_signal_t* signal);

  mozart::InputDeviceRegistry* registry_;

  std::map<zx_handle_t, std::unique_ptr<DeviceInfo>> devices_;
  std::unique_ptr<fsl::DeviceWatcher> device_watcher_;
  std::unique_ptr<fsl::DeviceWatcher> console_watcher_;
  zx_handle_t display_ownership_event_;
  std::unique_ptr<async::AutoWait> display_ownership_waiter_;
  bool ignore_console_;
  bool display_owned_ = true;

  FXL_DISALLOW_COPY_AND_ASSIGN(InputReader);
};

}  // namespace input
}  // namespace mozart

#endif  // GARNET_BIN_UI_INPUT_READER_INPUT_READER_H_