/// <summary>
/// Deregister feed provider for stop request feeds
/// </summary>
/// <param name="provider">provider for deregister</param>
public void DeRegister(IFeedProvider provider)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
if (this.FeedProviders.ContainsKey(provider) == false)
{
return;
}
FeedRequestObject reqObject = null;
bool result = this.FeedProviders.TryGetValue(provider, out reqObject);
if (result == true)
{
reqObject.StopRequest();
}
//해당 파서에 대한 피딩 중단
//프로바이더 제거
provider.RequestFeedsDelegate = null;
this.FeedProviders.Remove(provider);
}
/// <summary>
/// Get request object from provider
/// </summary>
/// <param name="provider">provider</param>
/// <returns>request object</returns>
private FeedRequestObject GetRequestObject(IFeedProvider provider)
{
provider.RequestFeedsDelegate = this.FeedRequestDelegateCallback;
FeedRequestObject reqObject = new FeedRequestObject(provider);
return(reqObject);
}
/// <summary>
/// Try send request to web again with refreshed request from provider
/// </summary>
/// <param name="provider"></param>
private void FeedRequestDelegateCallback(IFeedProvider provider)
{
FeedRequestObject reqObject = null;
bool isReqObjectExist = this.FeedProviders.TryGetValue(provider, out reqObject);
if (isReqObjectExist == true && reqObject != null)
{
reqObject.BeginRequest();
}
}
/// <summary>
/// Begin asynchronous parsing
/// </summary>
/// <param name="provider">provider</param>
/// <returns>true to register success</returns>
public bool Register(IFeedProvider provider)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
if (this.FeedProviders.ContainsKey(provider) == true)
{
return(false);
}
FeedRequestObject requestObject = this.GetRequestObject(provider);
this.FeedProviders.Add(provider, requestObject);
return(true);
}
/// <summary>
/// Get request object from provider
/// </summary>
/// <param name="provider">provider</param>
/// <returns>request object</returns>
private FeedRequestObject GetRequestObject(IFeedProvider provider)
{
provider.RequestFeedsDelegate = this.FeedRequestDelegateCallback;
FeedRequestObject reqObject = new FeedRequestObject(provider);
return reqObject;
}