private void OnContactListException(object sender, GetContactListExceptionEventArgs e)
{
Dispatcher.BeginInvoke(() => {
if(SystemTray.ProgressIndicator != null)
SystemTray.ProgressIndicator.IsVisible = false;
if (Cinderella.CinderellaCore.ContactList.Count == 0)
{
StatusLabel.Text = AppResources.ContactsLoadingErrorText;
StatusLabel.Visibility = Visibility.Visible;
}
});
}
public async void GetContactListAsync(int page, int perPage, Dictionary<string, string> parameters = null)
{
if (isLoadingContactList)
return;
isLoadingContactList = true;
string timestamp = DateTimeUtils.GetTimestamp();
string nonce = Guid.NewGuid().ToString().Replace("-", null);
Dictionary<string, string> paramDict = new Dictionary<string, string>();
paramDict["method"] = "flickr.contacts.getList";
paramDict["format"] = "json";
paramDict["nojsoncallback"] = "1";
paramDict["oauth_consumer_key"] = consumerKey;
paramDict["oauth_nonce"] = nonce;
paramDict["oauth_signature_method"] = "HMAC-SHA1";
paramDict["oauth_timestamp"] = timestamp;
paramDict["oauth_token"] = AccessToken;
paramDict["oauth_version"] = "1.0";
paramDict["page"] = page.ToString();
paramDict["per_page"] = perPage.ToString();
if (parameters != null)
{
foreach (var entry in parameters)
{
paramDict[entry.Key] = entry.Value;
}
}
string paramString = GenerateParamString(paramDict);
string signature = GenerateSignature("GET", AccessTokenSecret, "https://api.flickr.com/services/rest", paramString);
string requestUrl = "https://api.flickr.com/services/rest?" + paramString + "&oauth_signature=" + signature;
HttpWebResponse response = await DispatchRequest("GET", requestUrl, null).ConfigureAwait(false);
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
isLoadingContactList = false;
if (response.StatusCode != HttpStatusCode.OK)
{
var exceptionEvt = new GetContactListExceptionEventArgs();
exceptionEvt.Page = page;
exceptionEvt.PerPage = perPage;
GetContactListException.DispatchEvent(this, exceptionEvt);
HandleHTTPException(response);
return;
}
string jsonString = await reader.ReadToEndAsync().ConfigureAwait(false);
if (!TryHandleResponseException(jsonString,
() => {
GetContactListAsync(page, perPage, parameters);
},
() => {
var exceptionEvt = new GetContactListExceptionEventArgs();
exceptionEvt.Page = page;
exceptionEvt.PerPage = perPage;
GetContactListException.DispatchEvent(this, exceptionEvt);
}))
return;
GetContactListEventArgs args = new GetContactListEventArgs();
args.Page = page;
args.PerPage = perPage;
args.Response = jsonString;
ContactListReturned.DispatchEvent(this, args);
}
}
