/// <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);
}
/// <summary>
/// Helper method to asynchronously load pushpins associated with the supplied layer and populate the pushpins collection supplied as a parameter.
/// </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)
{
LayerAndPushpin layerAndPushpin = new LayerAndPushpin
{
LayerModel = layer,
PushpinModels = pushpins
};
WebClient client = new WebClient();
client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(LoadPushpinsAsync_DownloadStringCompleted);
client.DownloadStringAsync(new Uri(layer.Link), layerAndPushpin);
}
private static void LoadLayersAsync_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
WebClient client = sender as WebClient;
Collection<LayerModel> layers = e.UserState as Collection<LayerModel>;
if (layers == null)
{
throw new ArgumentNullException("layers", "The layers parameter provided to the LoadLayersAsync method is null.");
}
if (e.Error != null)
{
throw e.Error;
}
XElement root = XElement.Parse(e.Result);
XNamespace atom = "http://www.w3.org/2005/Atom";
var entries = from entry in root.Descendants(atom + "entry")
select new
{
Id = entry.Element(atom + "id").Value,
Title = entry.Element(atom + "title").Value,
Summary = entry.Element(atom + "summary").Value,
Link = entry.Elements(atom + "link").First(elm => elm.Attribute("type").Value == "application/vnd.google-earth.kml+xml").Attribute("href").Value,
ImageLink = entry.Elements(atom + "link").First(elm => elm.Attribute("type").Value == "image/png").Attribute("href").Value
};
BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += (send, evt) =>
{
foreach (var entry in entries)
{
LayerModel model = new LayerModel
{
Id = entry.Id,
Title = entry.Title,
Summary = entry.Summary,
Link = entry.Link,
ImageLink = entry.ImageLink.StartsWith("http") ? entry.ImageLink : App.OdafWebsiteUrl + "/" + entry.ImageLink
};
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
layers.Add(model);
});
}
};
worker.RunWorkerAsync();
}
