src/Compass.cpp

/*
 * Compass.cpp
 *
 *  Created on: Mar 25, 2011
 *      Author: Anis Kadri <anis@adobe.com>
 *
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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 "../inc/Compass.h"

Compass::Compass(Web* pWeb) : CordovaCommand(pWeb) {
	__sensorMgr.Construct();
	started = false;
	x = y = z = 0.0;
	timestamp = 0;
}

Compass::~Compass() {
}

void
Compass::Run(const String& command) {
	if (!command.IsEmpty()) {
		String args;
		String delim(L"/");
		command.SubString(String(L"gap://").GetLength(), args);
		StringTokenizer strTok(args, delim);
		if(strTok.GetTokenCount() < 2) {
			AppLogDebug("Not Enough Params");
			return;
		}
		String method;
		strTok.GetNextToken(method);
		// Getting callbackId
		strTok.GetNextToken(callbackId);
		AppLogDebug("Method %S, callbackId: %S", method.GetPointer(), callbackId.GetPointer());
		// used to determine callback ID
		if(method == L"com.cordova.Compass.watchHeading" && !callbackId.IsEmpty() && !IsStarted()) {
			AppLogDebug("watching compass...");
			StartSensor();
		}
		if(method == L"com.cordova.Compass.clearWatch" && !callbackId.IsEmpty() && IsStarted()) {
			AppLogDebug("stop watching compass...");
			StopSensor();
		}
		if(method == L"com.cordova.Compass.getCurrentHeading" && !callbackId.IsEmpty() && !IsStarted()) {
			AppLogDebug("getting current compass...");
			GetLastHeading();
		}
		AppLogDebug("Compass command %S completed", command.GetPointer());
	} else {
		AppLogDebug("Can't run empty command");
	}
}

bool
Compass::StartSensor(void) {
	result r = E_SUCCESS;

	if(__sensorMgr.IsAvailable(SENSOR_TYPE_MAGNETIC)) {
		r = __sensorMgr.AddSensorListener(*this, SENSOR_TYPE_MAGNETIC, 50, true);
		if(IsFailed(r)) {
			return false;
		}
	} else {
		AppLogException("Compass sensor is not available");
		String res;
		res.Format(256, L"Cordova.callbacks['%S'].fail({message:'Magnetic sensor is not available',code:'001'});", callbackId.GetPointer());
		pWeb->EvaluateJavascriptN(res);
		return false;
	}
	started = true;
	AppLogDebug("Start Watching Sensor");
	return true;
}

bool
Compass::StopSensor(void) {
	result r = E_SUCCESS;

	r = __sensorMgr.RemoveSensorListener(*this, SENSOR_TYPE_MAGNETIC);
	if(IsFailed(r)) {
		return false;
	}
	started = false;
	AppLogDebug("Stopped Watching Sensor");
	return true;
}

bool
Compass::IsStarted() {
	return started;
}

void
Compass::GetLastHeading() {
	String res;
	res.Format(256, L"Cordova.callbacks['%S'].success({x:%f,y:%f,z:%f,timestamp:%d});", callbackId.GetPointer(), x, y, z, timestamp);
	pWeb->EvaluateJavascriptN(res);
}

void
Compass::OnDataReceived(SensorType sensorType, SensorData& sensorData, result r) {

	sensorData.GetValue((SensorDataKey)MAGNETIC_DATA_KEY_TIMESTAMP, timestamp);
	sensorData.GetValue((SensorDataKey)MAGNETIC_DATA_KEY_X, x);
	sensorData.GetValue((SensorDataKey)MAGNETIC_DATA_KEY_Y, y);
	sensorData.GetValue((SensorDataKey)MAGNETIC_DATA_KEY_Z, z);

	AppLogDebug("x: %f, y: %f, z: %f timestamp: %d", x, y, z, timestamp);

	String res;
	res.Format(256, L"Cordova.callbacks['%S'].success({x:%f,y:%f,z:%f,timestamp:%d});", callbackId.GetPointer(), x, y, z, timestamp);
	pWeb->EvaluateJavascriptN(res);
}