/*
 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#include <dali-toolkit/dali-toolkit.h>

using namespace Dali;
using Dali::Toolkit::TextLabel;

// This example shows how to create and display Hello World! using a simple TextActor
//
class HelloWorldController : public ConnectionTracker
{
public:

  HelloWorldController( Application& application )
  : mApplication( application )
  {
    // Connect to the Application's Init signal
    mApplication.InitSignal().Connect( this, &HelloWorldController::Create );
  }

  ~HelloWorldController() = default; // Nothing to do in destructor

  // The Init signal is received once (only) during the Application lifetime
  void Create( Application& application )
  {
    // Get a handle to the window
    Window window = application.GetWindow();
    window.SetBackgroundColor( Color::WHITE );

    TextLabel textLabel = TextLabel::New( "Hello World" );
    textLabel.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT );
    textLabel.SetProperty( Dali::Actor::Property::NAME, "helloWorldLabel" );
    window.Add( textLabel );

    // Respond to a touch anywhere on the window
    window.GetRootLayer().TouchSignal().Connect( this, &HelloWorldController::OnTouch );

    // Respond to key events
    window.KeyEventSignal().Connect( this, &HelloWorldController::OnKeyEvent );
  }

  bool OnTouch( Actor actor, const TouchEvent& touch )
  {
    // quit the application
    mApplication.Quit();
    return true;
  }

  void OnKeyEvent( const KeyEvent& event )
  {
    if( event.GetState() == KeyEvent::Down )
    {
      if ( IsKey( event, Dali::DALI_KEY_ESCAPE ) || IsKey( event, Dali::DALI_KEY_BACK ) )
      {
        mApplication.Quit();
      }
    }
  }

private:
  Application&  mApplication;
};

int DALI_EXPORT_API main( int argc, char **argv )
{
  Application application = Application::New( &argc, &argv );
  HelloWorldController test( application );
  application.MainLoop();
  return 0;
}