/// <summary>
/// Load dummy pushpins at design-time
/// </summary>
/// <param name="layer">The layer to which the downloaded pushpins will be associated.</param>
/// <param name="pushpins">The PushpinModel collection to be populated.</param>
public static void LoadPushpinsAsync(LayerModel layer, Collection<PushpinModel> pushpins)
{
PushpinModel pushpin1 = new PushpinModel
{
Guid = Guid.NewGuid().ToString(),
Description = "Design-Time Description",
Layer = layer,
Location = new GeoCoordinate(48.8925, 2.3449)
};
PushpinModel pushpin2 = new PushpinModel
{
Guid = Guid.NewGuid().ToString(),
Description = "Design-Time Description",
Layer = layer,
Location = new GeoCoordinate(48.8875, 2.3882)
};
PushpinModel pushpin3 = new PushpinModel
{
Guid = Guid.NewGuid().ToString(),
Description = "Design-Time Description",
Layer = layer,
Location = new GeoCoordinate(48.8766, 2.3555)
};
PushpinModel pushpin4 = new PushpinModel
{
Guid = Guid.NewGuid().ToString(),
Description = "Design-Time Description",
Layer = layer,
Location = new GeoCoordinate(48.8641, 2.3977)
};
PushpinModel pushpin5 = new PushpinModel
{
Guid = Guid.NewGuid().ToString(),
Description = "Design-Time Description",
Layer = layer,
Location = new GeoCoordinate(48.8327, 2.3261)
};
PushpinModel pushpin6 = new PushpinModel
{
Guid = Guid.NewGuid().ToString(),
Description = "Design-Time Description",
Layer = layer,
Location = new GeoCoordinate(48.8166, 2.3605)
};
pushpins.Add(pushpin1);
pushpins.Add(pushpin2);
pushpins.Add(pushpin3);
pushpins.Add(pushpin4);
pushpins.Add(pushpin5);
pushpins.Add(pushpin6);
}
public TwitterViewModel()
{
if (!DesignerProperties.IsInDesignTool)
{
try
{
AccessToken = IsolatedStorageSettings.ApplicationSettings["AccessToken"] as OAuthAccessToken;
TwitterUsername = IsolatedStorageSettings.ApplicationSettings["TwitterUsername"] as string;
TwitterPassword = IsolatedStorageSettings.ApplicationSettings["TwitterPassword"] as string;
SelectedPushpin = IsolatedStorageSettings.ApplicationSettings["SelectedPushpin"] as PushpinModel;
//We create the summary if it doesn't exist only when when authentication against ODAF website has been established
CommentService.Authenticated += (sender, e) =>
{
CommentService.CreateSummaryAsync(SelectedPushpin);
};
CommentService.SummaryCreated += (sender, e) =>
{
SummaryHasBeenCreated = true;
};
CommentService.AuthenticateAsync(AccessToken.Token, AccessToken.TokenSecret);
if (AccessToken == null || TwitterUsername == null || TwitterPassword == null)
{
throw new KeyNotFoundException();
}
Twitter.AuthenticateWith(AccessToken.Token, AccessToken.TokenSecret);
HasUserAlreadyAuthorizedApp = true;
}
catch (KeyNotFoundException)
{
HasUserAlreadyAuthorizedApp = false;
GetRequestToken();
}
}
_AuthenticateUserCommand = new DelegateCommand(AuthenticateUser, (obj) => true);
_SendTweetCommand = new DelegateCommand(SendTweet, CanSendTweet);
_ResetTwitterCredentialsCommand = new DelegateCommand(ResetTwitterCredentials, (obj) => true);
_TakePhotoCommand = new DelegateCommand(TakePhoto, (obj) => HasUserAlreadyAuthorizedApp);
}
private static void LoadPushpinsAsync_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
LayerAndPushpin layerAndPushpin = e.UserState as LayerAndPushpin;
if (layerAndPushpin.LayerModel == null)
{
throw new ArgumentNullException("layer", "The layer parameter provided to the LoadPushpinsAsync method is null.");
}
if (layerAndPushpin.PushpinModels == null)
{
throw new ArgumentNullException("pushpins", "The pushpins parameter provided to the LoadPushpinsAsync method is null.");
}
if (e.Error != null)
{
throw e.Error;
}
XElement root = XElement.Parse(e.Result);
XNamespace kml = "http://www.opengis.net/kml/2.2";
var placemarks = from placemark in root.Descendants(kml + "Placemark")
select new
{
Guid = placemark.Element(kml + "name").Value,
Description = placemark.Element(kml + "description").Value,
Latitude = double.Parse(placemark.Element(kml + "Point").Element(kml + "coordinates").Value.Split(',')[1], CultureInfo.InvariantCulture),
Longitude = double.Parse(placemark.Element(kml + "Point").Element(kml + "coordinates").Value.Split(',')[0], CultureInfo.InvariantCulture)
};
BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += (send, evt) =>
{
foreach (var placemark in placemarks)
{
PushpinModel pushpin = new PushpinModel
{
Guid = placemark.Guid,
Description = placemark.Description,
Location = new GeoCoordinate(placemark.Latitude, placemark.Longitude),
Layer = layerAndPushpin.LayerModel
};
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
layerAndPushpin.PushpinModels.Add(pushpin);
});
}
};
worker.RunWorkerAsync();
}
/// <summary>
/// Create a PointDataSummary in the ODAF database asynchronously.
/// The PointDataSummary properties will be mapped to the PushpinModel properties passed as a parameter.
/// </summary>
/// <param name="pushpinModel">the PushpinModel which serves as a base to create the PointDataSummary.</param>
public void CreateSummaryAsync(PushpinModel pushpinModel)
{
Uri uri = new Uri(App.OdafWebsiteUrl
+ _summariesAddControllerRelativeUrl);
HttpWebRequest request = WebRequest.CreateHttp(uri);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.CookieContainer = container;
CreateSummaryUserState userState = new CreateSummaryUserState
{
Request = request,
PushpinModel = pushpinModel
};
request.BeginGetRequestStream(CreateSummaryPostRequest, userState);
}