/// <summary>
/// Add node object to the database and Nodes collection.
/// </summary>
/// <param name="newToDoItem">Node object</param>
public void AddNode(Node node)
{
// Add the node object to the data context.
appDB.Nodes.InsertOnSubmit(node);
// Save changes to the database.
appDB.SubmitChanges();
// Add the node object to the Nodes observable collection.
Nodes.Add(node);
}
/// <summary>
/// Remove a node object from the database and Node collection.
/// </summary>
/// <param name="toDoForDelete"></param>
public void DeleteNode(Node node)
{
// Remove the node object from the Nodes observable collection.
Nodes.Remove(node);
// Remove the node object from the data context.
appDB.Nodes.DeleteOnSubmit(node);
// Save changes to the database.
appDB.SubmitChanges();
}
/// <summary>
/// Reads node data through web service.
///
/// Incomplete!
/// </summary>
/// <param name="nid"></param>
/// <param name="onFinish"></param>
/// <param name="onError"></param>
public void GetNode(int nid, Action<Node> onFinish = null, Action<Exception> onError = null)
{
// Check network availability.
if(!DeviceNetworkInformation.IsNetworkAvailable)
{
onError(new Exception("Network is unavailable!"));
}
WebClient webClient = new WebClient();
String requestString = String.Format("{0}node/{1}.xml", this.serviceUri, nid);
webClient.OpenReadCompleted += delegate (object sender, OpenReadCompletedEventArgs e)
{
try
{
if (e.Error != null)
{
if (onError != null)
{
onError(e.Error);
}
}
// TODO: Extract other node fields.
XElement resultXml = XElement.Load(e.Result);
XElement xEl = resultXml.Element("title");
Node node = new Node();
node.Title = xEl.Value;
if (onFinish != null)
{
onFinish(node);
}
}
catch (Exception ex)
{
if (onError != null)
{
onError(ex);
}
}
};
// Call the OpenReadAsyc to make a GET request.
webClient.OpenReadAsync(new Uri(requestString));
}
void onFileCreatedRemotely(Model.File file)
{
App.ViewModel.AddFile(file);
Node node = new Node();
node.Title = file.FileName;
node.Type = AppResources.DrupalContentType;
node.File = file;
RESTService service = new RESTService(AppResources.RESTServiceUri);
service.CreateNode(node, onNodeCreatedRemotely, onError);
}
/// <summary>
/// Creates a node in Drupal remotelly.
///
/// To allow creating nodes through Services and if you don't use authentication
/// make sure that anonymous user has necessary Drupal permission.
/// </summary>
/// <param name="node"></param>
/// <param name="onFinish"></param>
/// <param name="onError"></param>
public void CreateNode(Node node, Action<Node> onFinish = null, Action<Exception> onError = null)
{
// Check network availability.
if (!DeviceNetworkInformation.IsNetworkAvailable)
{
onError(new Exception("Network is unavailable!"));
}
WebClient webClient = new WebClient();
webClient.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
webClient.Headers[HttpRequestHeader.Accept] = "application/xml";
String requestString = String.Format("{0}node", this.serviceUri);
String requestQuery = String.Format("title={0}&type={1}&catchsmile_image[und][][fid]={2}&catchsmile_image[und][][list]=1", Uri.EscapeDataString(node.Title), node.Type, node.File.Fid);
webClient.UploadStringCompleted += delegate(object sender, UploadStringCompletedEventArgs e)
{
try
{
if (e.Error != null)
{
if (onError != null)
{
onError(e.Error);
}
}
/* Response example:
<?xml version="1.0" encoding="utf-8"?>
<result>
<nid>26</nid>
<uri>http://drupal7/endpoint1/node/26</uri>
</result>
*/
XElement resultXml = XElement.Parse(e.Result);
node.Nid = int.Parse(resultXml.Element("nid").Value);
node.Uri = resultXml.Element("uri").Value;
if (onFinish != null)
{
onFinish(node);
}
}
catch (Exception ex)
{
if (onError != null)
{
onError(ex);
}
}
};
// Call the UploadStringAsync to make a POST request.
webClient.UploadStringAsync(new Uri(requestString), "POST", requestQuery);
}