Orientation Wallpapers/basic.js
changeset 0 0b6daedcf7e1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Orientation Wallpapers/basic.js	Thu Oct 28 11:00:31 2010 -0700
@@ -0,0 +1,74 @@
+/*
+ * JavaScript file
+ */
+
+function init()
+{
+	widget.setDisplayPortrait();
+	watchSensorNotifications();
+}
+
+// Call this function to add a callback that will be notified of orientation changes
+function watchSensorNotifications() {
+	var sensors = device.getServiceObject("Service.Sensor", "ISensor");
+	var SensorParams = {
+		SearchCriterion : "Orientation" // TODO Possible values (one of):
+			// SearchCriterion : "All"
+			// SearchCriterion : "AccelerometerAxis"
+			// SearchCriterion : "AccelerometerDoubleTapping"
+			// SearchCriterion : "Rotation"
+	};
+	var result = sensors.ISensor.FindSensorChannel(SensorParams);
+
+	if (result.ErrorCode != 0) {
+		var errorCode = result.ErrorCode;
+		var errorMessage = result.ErrorMessage;
+		// TODO Handle error
+		return null;
+	}
+    // TODO Function named "sensorCallback" will be called when device orientation changes. This function should be created. 
+	var result2 = sensors.ISensor.RegisterForNotification(
+			{ ChannelInfoMap : result.ReturnValue[0], 
+				ListeningType : "ChannelData" }, sensorCallback);
+	if (result.ErrorCode == 0) {
+		var transactionId = result.TransactionID;
+		// TODO Use this transaction ID to cancel notifications when watching orientation is no longer needed
+		return transactionId;
+	} else {
+		var errorCode = result.ErrorCode;
+		var errorMessage = result.ErrorMessage;
+		// TODO Handle error
+		return null;
+	}
+}
+
+// This function can be passed as callback to 
+// sensors.ISensor.RegisterForNotification method
+function sensorCallback(transactionId, code, result) {
+	if (result.ErrorCode == 0) {
+		// TODO Process notification
+		var dataType = result.ReturnValue.DataType; // One of: "AxisData", "DoubleTappingData", "OrientationData" or "RotationData"
+		var orientation = result.ReturnValue.DeviceOrientation; // Orientation
+		// var xAxis = result.ReturnValue.XAxisData; // Accelerometer
+		// var yAxis = result.ReturnValue.YAxisData; // Accelerometer
+		// var zAxis = result.ReturnValue.ZAxisData; // Accelerometer
+		// var direction = result.ReturnValue.DeviceDirection; // Accelerometer double tapping
+		// var xRotation = result.ReturnValue.XRotation; // Rotation
+		// var yRotation = result.ReturnValue.YRotation; // Rotation
+		// var zRotation = result.ReturnValue.ZRotation; // Rotation
+		setVisibleDiv(orientation);
+	} else {
+		var errorCode = result.ErrorCode;
+		var errorMessage = result.ErrorMessage;
+		// TODO Handle error
+	}
+}
+
+function setVisibleDiv(orientation) {
+	var elements = document.getElementsByTagName("div");
+	for ( var i = 0; i < elements.length; i++) {
+		var el = elements[i];
+		el.style.display = el.id == orientation ? "inherit" : "none";
+	}
+	document.getElementById("orientation").innerHTML = orientation;
+}
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