/// <summary>
/// Default entry into managed code.
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public async Task <object> Invoke(object input)
{
if (console == null)
{
console = await WebSharpJs.NodeJS.Console.Instance();
}
try
{
var document = await HtmlPage.GetDocument();
var findMe = await document.GetElementById("findMe");
var map = await document.GetElementById("map");
var location = await document.GetElementById("location");
var error = false;
await findMe.AttachEvent(HtmlEventNames.Click,
new EventHandler(
async(sender, evt) => {
error = false;
await location.SetProperty("innerText", "Locating ...");
var geo = await GeoLocationAPI.Instance();
await geo.GetCurrentPosition(
new ScriptObjectCallback <Position>(
async(cr) =>
{
// Obtain our position from the CallbackState
var position = cr.CallbackState as Position;
// Reference the Coordinates class
var coords = position.Coordinates;
// Create our location information string
var posString = $"Your current position is:\nLatitude : {coords.Latitude}\nLongitude : {coords.Longitude}\nMore or less {coords.Accuracy} Meters.";
// Set the location status text
await location.SetProperty("innerText", posString);
// Retrieve the image of the location using the longitude and latitude
// properties of the Coordinates class.
var imageURL = $"https://maps.googleapis.com/maps/api/staticmap?center={coords.Latitude},{coords.Longitude}&zoom=13&size=300x300&sensor=false";
// Set the src property of the <image> tag
await map.SetProperty("src", imageURL);
}
),
new ScriptObjectCallback <PositionError>(
async(cr) =>
{
// Obtain the error from CallbackState
var err = cr.CallbackState as PositionError;
// Format a string with the error
var errString = $"ERROR({err.ErrorCode}): {err.Message}";
// If we already have an error then we will want to append
// the error to the already existing error(s) that exist.
if (error)
{
var errorText = await location.GetProperty <string>("innerText");
errString = $"{errorText}\n{errString}";
}
error = true;
// Set the status area text for feedback to the user
await location.SetProperty("innerText", errString);
}
),
new PositionOptions()
{
EnableHighAccuracy = true, Timeout = 5000, MaximumAge = 0
}
);
}
)
);
await console.Log($"Hello: {input}");
}
catch (Exception exc) { await console.Log($"extension exception: {exc.Message}"); }
return(null);
}
/// <summary>
/// Default entry into managed code.
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public async Task <object> Invoke(object input)
{
if (console == null)
{
console = await WebSharpJs.NodeJS.Console.Instance();
}
try
{
var document = await HtmlPage.GetDocument();
var findMe = await document.GetElementById("findMe");
var map = await document.GetElementById("map");
var location = await document.GetElementById("location");
var error = false;
await findMe.AttachEvent("click",
new EventHandler(
async(sender, evt) => {
error = false;
await location.SetProperty("innerText", "Locating ...");
var geo = await GeoLocationAPI.Instance();
await geo.GetCurrentPosition(
new ScriptObjectCallback <GeoPosition>(
async(cr) =>
{
var position = cr.CallbackState as GeoPosition;
var coords = position.Coordinates;
var posString = $"Your current position is:\nLatitude : {coords.Latitude}\nLongitude : {coords.Longitude}\nMore or less {coords.Accuracy} Meters.";
await location.SetProperty("innerText", posString);
var imageURL = $"https://maps.googleapis.com/maps/api/staticmap?center={coords.Latitude},{coords.Longitude}&zoom=13&size=300x300&sensor=false";
await map.SetProperty("src", imageURL);
}
),
new ScriptObjectCallback <PositionError>(
async(cr) =>
{
var err = cr.CallbackState as PositionError;
var errString = $"ERROR({err.ErrorCode}): {err.Message}";
if (error)
{
var errorText = await location.GetProperty <string>("innerText");
errString = $"{errorText}\n{errString}";
}
error = true;
await location.SetProperty("innerText", errString);
}
),
new PositionOptions()
{
EnableHighAccuracy = true, Timeout = 5000, MaximumAge = 0
}
);
}
)
);
await console.Log($"Hello: {input}");
}
catch (Exception exc) { await console.Log($"extension exception: {exc.Message}"); }
return(null);
}
