#pragma region CPL License
/*
Nuclex Native Framework
Copyright (C) 2002-2013 Nuclex Development Labs

This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.

You should have received a copy of the IBM Common Public
License along with this library
*/
#pragma endregion // CPL License

// If the library is compiled as a DLL, this ensures symbols are exported
#define NUCLEX_INPUT_SOURCE 1

#include "Nuclex/Input/Config.h"

#if defined(NUCLEX_INPUT_WINRT)

#include "WinRTInputManager.Impl.h"

using namespace Windows::UI::Core;
using namespace Windows::Foundation;

namespace {

  // ------------------------------------------------------------------------------------------- //

  /// <summary>Determines if the specified device is a mouse</summary>
  /// <param name="device">Device that will be checked for being a mouse</param>
  /// <returns>True if the specified device is a mouse</returns>
  bool isMouse(Windows::Devices::Input::PointerDevice ^device) {
    return (device->PointerDeviceType == Windows::Devices::Input::PointerDeviceType::Mouse);
  }

  // ------------------------------------------------------------------------------------------- //

} // anonymous namespace

namespace Nuclex { namespace Input {

  // ------------------------------------------------------------------------------------------- //

  WinRTInputManager::Impl::Impl(Windows::UI::Core::CoreWindow ^window) :
    window(window) {

    subscribeWindowEvents();
  }

  // ------------------------------------------------------------------------------------------- //

  WinRTInputManager::Impl::~Impl() {
    this->window->PointerWheelChanged -= this->pointerWheelChangedEventToken;
    window->PointerMoved -= this->pointerMovedEventToken;
    window->PointerReleased -= this->pointerReleasedEventToken;
    window->PointerPressed -= this->pointerPressedEventToken;

    window->CharacterReceived -= this->characterReceivedEventToken;
    window->KeyUp -= this->keyUpEventToken;
    window->KeyDown -= this->keyDownEventToken;
  }

  // ------------------------------------------------------------------------------------------- //

  void WinRTInputManager::Impl::pointerPressed(
    Windows::UI::Core::CoreWindow ^sender, Windows::UI::Core::PointerEventArgs ^arguments
  ) {
    if(isMouse(arguments->CurrentPoint->PointerDevice)) {
      this->Mouse.InjectButtonPress(sender, arguments);
    } else {
      // TODO: Route to touch panel
    }
  }

  // ------------------------------------------------------------------------------------------- //

  void WinRTInputManager::Impl::pointerReleased(
    Windows::UI::Core::CoreWindow ^sender, Windows::UI::Core::PointerEventArgs ^arguments
  ) {
    if(isMouse(arguments->CurrentPoint->PointerDevice)) {
      this->Mouse.InjectButtonPress(sender, arguments);
    } else {
      // TODO: Route to touch panel
    }
  }

  // ------------------------------------------------------------------------------------------- //

  void WinRTInputManager::Impl::pointerMoved(
    Windows::UI::Core::CoreWindow ^sender, Windows::UI::Core::PointerEventArgs ^arguments
  ) {
    if(isMouse(arguments->CurrentPoint->PointerDevice)) {
      this->Mouse.InjectCursorMovement(sender, arguments);
    } else {
      // TODO: Reoute to touch panel
    }
  }

  // ------------------------------------------------------------------------------------------- //

  void WinRTInputManager::Impl::pointerWheelChanged(
    Windows::UI::Core::CoreWindow ^sender, Windows::UI::Core::PointerEventArgs ^arguments
  ) {
    if(isMouse(arguments->CurrentPoint->PointerDevice)) {
      this->Mouse.InjectWheelRotation(sender, arguments);
    } else {
      // TODO: Reoute to touch panel
    }
  }

  // ------------------------------------------------------------------------------------------- //

  void WinRTInputManager::Impl::subscribeWindowEvents() {
    this->keyDownEventToken = (
      this->window->KeyDown += ref new TypedEventHandler<CoreWindow ^, KeyEventArgs ^>(
        this, &Impl::keyDown
      )
    );
    this->keyUpEventToken = (
      this->window->KeyUp += ref new TypedEventHandler<CoreWindow ^, KeyEventArgs ^>(
        this, &Impl::keyUp
      )
    );
    this->characterReceivedEventToken = (
      this->window->CharacterReceived += ref new TypedEventHandler<
        CoreWindow ^, CharacterReceivedEventArgs ^
      >(this, &Impl::characterReceived)
    );

    this->pointerPressedEventToken = (
      this->window->PointerPressed += ref new TypedEventHandler<
        CoreWindow ^, PointerEventArgs ^
      >(this, &Impl::pointerPressed)
    );
    this->pointerReleasedEventToken = (
      this->window->PointerReleased += ref new TypedEventHandler<
        CoreWindow ^, PointerEventArgs ^
      >(this, &Impl::pointerReleased)
    );
    this->pointerMovedEventToken = (
      this->window->PointerMoved += ref new TypedEventHandler<
        CoreWindow ^, PointerEventArgs ^
      >(this, &Impl::pointerMoved)
    );
    this->pointerWheelChangedEventToken = (
      this->window->PointerWheelChanged += ref new TypedEventHandler<
        CoreWindow ^, PointerEventArgs ^
      >(this, &Impl::pointerWheelChanged)
    );
  }

  // ------------------------------------------------------------------------------------------- //

}} // namespace Nuclex::Input

#endif // defined(NUCLEX_INPUT_WINRT)