1 /*

     2  * JavaScript file

     3  */

     4 

     5 function init()

     6 {

     7 	widget.setDisplayPortrait();

     8 	watchSensorNotifications();

     9 }

    10 

    11 // Call this function to add a callback that will be notified of orientation changes

    12 function watchSensorNotifications() {

    13 	var sensors = device.getServiceObject("Service.Sensor", "ISensor");

    14 	var SensorParams = {

    15 		SearchCriterion : "Orientation" // TODO Possible values (one of):

    16 			// SearchCriterion : "All"

    17 			// SearchCriterion : "AccelerometerAxis"

    18 			// SearchCriterion : "AccelerometerDoubleTapping"

    19 			// SearchCriterion : "Rotation"

    20 	};

    21 	var result = sensors.ISensor.FindSensorChannel(SensorParams);

    22 

    23 	if (result.ErrorCode != 0) {

    24 		var errorCode = result.ErrorCode;

    25 		var errorMessage = result.ErrorMessage;

    26 		// TODO Handle error

    27 		return null;

    28 	}

    29     // TODO Function named "sensorCallback" will be called when device orientation changes. This function should be created. 

    30 	var result2 = sensors.ISensor.RegisterForNotification(

    31 			{ ChannelInfoMap : result.ReturnValue[0], 

    32 				ListeningType : "ChannelData" }, sensorCallback);

    33 	if (result.ErrorCode == 0) {

    34 		var transactionId = result.TransactionID;

    35 		// TODO Use this transaction ID to cancel notifications when watching orientation is no longer needed

    36 		return transactionId;

    37 	} else {

    38 		var errorCode = result.ErrorCode;

    39 		var errorMessage = result.ErrorMessage;

    40 		// TODO Handle error

    41 		return null;

    42 	}

    43 }

    44 

    45 // This function can be passed as callback to 

    46 // sensors.ISensor.RegisterForNotification method

    47 function sensorCallback(transactionId, code, result) {

    48 	if (result.ErrorCode == 0) {

    49 		// TODO Process notification

    50 		var dataType = result.ReturnValue.DataType; // One of: "AxisData", "DoubleTappingData", "OrientationData" or "RotationData"

    51 		var orientation = result.ReturnValue.DeviceOrientation; // Orientation

    52 		// var xAxis = result.ReturnValue.XAxisData; // Accelerometer

    53 		// var yAxis = result.ReturnValue.YAxisData; // Accelerometer

    54 		// var zAxis = result.ReturnValue.ZAxisData; // Accelerometer

    55 		// var direction = result.ReturnValue.DeviceDirection; // Accelerometer double tapping

    56 		// var xRotation = result.ReturnValue.XRotation; // Rotation

    57 		// var yRotation = result.ReturnValue.YRotation; // Rotation

    58 		// var zRotation = result.ReturnValue.ZRotation; // Rotation

    59 		setVisibleDiv(orientation);

    60 	} else {

    61 		var errorCode = result.ErrorCode;

    62 		var errorMessage = result.ErrorMessage;

    63 		// TODO Handle error

    64 	}

    65 }

    66 

    67 function setVisibleDiv(orientation) {

    68 	var elements = document.getElementsByTagName("div");

    69 	for ( var i = 0; i < elements.length; i++) {

    70 		var el = elements[i];

    71 		el.style.display = el.id == orientation ? "inherit" : "none";

    72 	}

    73 	document.getElementById("orientation").innerHTML = orientation;

    74 }