SensorController.java

package org.catrobat.html5player.client.formulaeditor;


import java.util.HashMap;




public class SensorController implements SensorNotifyingInterface {

	private HashMap<Sensors, Sensor>  _sensors;
	private static SensorController _instance;

	private SensorController(){
		Init();

	}

	protected void Init() {
		_sensors = new HashMap<Sensors, Sensor>();
	}
	public static SensorController GetController(){
		if (_instance == null) {
			_instance = new SensorController();
		}

		return _instance;
	}


	public Sensor GetSensor(Sensors sensor){

		if (!_sensors.containsKey(sensor)) {
			GenerateSensor(sensor);
		}

			return _sensors.get(sensor);

	}

	public void ActivateSensor(Sensors sensor)
	{
		if (!_sensors.containsKey(sensor)) {
			GenerateSensor(sensor);
		}
	}

	private void GenerateSensor(Sensors sensor)
	{
		Sensor concrete = null;
		switch (sensor) {
		case OBJECT_ROTATION:
			concrete = new OrientationSensor(this);
			break;
		default:
			break;
		}

		_sensors.put(sensor, concrete);
	}

	@Override
	public void Notify(Sensor sensor) {
	}

}