/// <summary>
/// Aquire the metar from the Internet and fills the WeatherInfoControl,
/// if the downloading is successful and metar can be parsed correctly.
/// This method is asynchronous. If the downloading finishes after ICAO
/// text already changed, the weather update will not happen.
/// </summary>
public async Task GetMetarAndFillWeather()
{
DisableDnBtn();
var w = wxControl;
w.picBox.Visible = false;
w.picBox.Image = Properties.Resources.RedLight;
string icao = airportControl.Icao;
bool metarAcquired = await Task.Run(
() => MetarDownloader.TryGetMetar(icao, out metar));
// Because GetMetar method is asynchronous, it is neccessary to
// check whether the currently entered ICAO code is still the
// same as before. If the ICAO changed, we do not need to update.
if (metarAcquired && icao == airportControl.Icao)
{
if (!WeatherAutoFiller.Fill(
metar,
w.windDirTxtBox,
w.windSpdTxtBox,
w.oatTxtBox,
w.tempUnitComboBox,
w.pressTxtBox,
w.pressUnitComboBox,
w.surfCondComboBox))
{
wxControl.ShowError(
@"Metar has been downloaded but the weather " +
"information cannot be filled automatically.",
"");
}
else
{
w.picBox.Image = Properties.Resources.GreenLight;
}
EnableViewBtn();
}
w.picBox.Visible = true;
EnableDnBtn();
}
// Get metar functions.
private async Task GetMetarClicked(object sender, EventArgs e)
{
DisableDnBtn();
var w = wxControl;
w.picBox.Visible = false;
w.picBox.Image = Properties.Resources.RedLight;
string icao = airportControl.Icao;
bool metarAcquired = await Task.Run(
() => MetarDownloader.TryGetMetar(icao, out metar));
if (metarAcquired)
{
if (WeatherAutoFiller.Fill(
metar,
w.windDirTxtBox,
w.windSpdTxtBox,
w.oatTxtBox,
w.tempUnitComboBox,
w.pressTxtBox,
w.pressUnitComboBox,
w.surfCondComboBox) == false)
{
wxControl.ShowError(
@"Metar has been downloaded but the weather " +
"information cannot be filled automatically.",
"");
}
else
{
w.picBox.Image = Properties.Resources.GreenLight;
}
EnableViewBtn();
}
w.picBox.Visible = true;
EnableDnBtn();
}