<!DOCTYPE html>
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 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file
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 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

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<html>
  <head>
    <meta name="viewport" content="width=device-width,height=device-height,user-scalable=no,initial-scale=1.0" />
    <meta http-equiv="Content-type" content="text/html; charset=utf-8"> <!-- ISO-8859-1 -->
    <title>Cordova Mobile Spec</title>
    <link rel="stylesheet" href="../master.css" type="text/css" media="screen" title="no title" charset="utf-8">
    <script type="text/javascript" charset="utf-8" src="../cordova.js"></script>      

      
<script type="text/javascript" charset="utf-8">

    var deviceReady = false;

    function roundNumber(num) {
        var dec = 3;
        var result = Math.round(num*Math.pow(10,dec))/Math.pow(10,dec);
        return result;
    }

    //-------------------------------------------------------------------------
    // Acceleration
    //-------------------------------------------------------------------------
    var watchAccelId = null;
    
    /**
     * Start watching acceleration
     */
    var watchAccel = function() {
        console.log("watchAccel()");

        // Success callback
        var success = function(a){
            document.getElementById('x').innerHTML = roundNumber(a.x);
            document.getElementById('y').innerHTML = roundNumber(a.y);
            document.getElementById('z').innerHTML = roundNumber(a.z);
            console.log("watchAccel success callback");
        };

        // Fail callback
        var fail = function(e){
            console.log("watchAccel fail callback with error code "+e);
            stopAccel();
            setAccelStatus(Accelerometer.ERROR_MSG[e]);
        };

        // Update acceleration every 1 sec
        var opt = {};
        opt.frequency = 1000;
        watchAccelId = navigator.accelerometer.watchAcceleration(success, fail, opt);

        setAccelStatus("Running");
    };

    /**
     * Stop watching the acceleration
     */
    var stopAccel = function() {
    	console.log("stopAccel()");
        setAccelStatus("Stopped");
        if (watchAccelId) {
            navigator.accelerometer.clearWatch(watchAccelId);
            watchAccelId = null;
        }
    };

    /**
     * Get current acceleration
     */
    var getAccel = function() {
        console.log("getAccel()");

        // Stop accel if running
        stopAccel();

        // Success callback
        var success = function(a){
            document.getElementById('x').innerHTML = roundNumber(a.x);
            document.getElementById('y').innerHTML = roundNumber(a.y);
            document.getElementById('z').innerHTML = roundNumber(a.z);
        };

        // Fail callback
        var fail = function(e){
            console.log("getAccel fail callback with error code "+e);
            setAccelStatus(Accelerometer.ERROR_MSG[e]);
        };

        // Make call
        var opt = {};
        navigator.accelerometer.getCurrentAcceleration(success, fail, opt);
    };

    /**
     * Set accelerometer status
     */
    var setAccelStatus = function(status) {
        document.getElementById('accel_status').innerHTML = status;
    };
    
    /**
     * Function called when page has finished loading.
     */
    function init() {
        console.log("accelerometer.init()");
        document.addEventListener("deviceready", function() {
                deviceReady = true;
                console.log("Device="+device.platform+" "+device.version);
            }, false);
        window.setTimeout(function() {
        	if (!deviceReady) {
        		alert("Error: Apache Cordova did not initialize.  Demo will not run correctly.");
        	}
        },1000);
    }

</script>

  </head>
  <body onload="init();" id="stage" class="theme">
  
    <h1>Acceleration</h1>
    <div id="info">
        <div id="accel_status">Stopped</div>
        <div ><table width="100%">
            <tr><td width="20%">X:</td><td id="x"> </td></tr>
            <tr><td width="20%">Y:</td><td id="y"> </td></tr>
            <tr><td width="20%">Z:</td><td id="z"> </td></tr>
        </table></div>
    </div>

    <h2>Action</h2>
    <div class="btn large" onclick="getAccel();">Get Acceleration</div>
    <div class="btn large" onclick="watchAccel();">Start Watch</div>
    <div class="btn large" onclick="stopAccel();">Clear Watch</div>
    <h2> </h2><div class="backBtn" onclick="backHome();">Back</div>
  </body>
</html>