private void RaiseNewFeedsDiscovered(DiscoveredFeedsInfo feedInfo)
{
if (NewFeedsDiscovered != null)
{
try {
NewFeedsDiscovered(this, new DiscoveredFeedsInfoEventArgs(feedInfo));
} catch (Exception ex) {
Log.Error("NewFeedsDiscovered() event causes an exception", ex);
}
}
}
private bool RaiseDiscoveredFeedsSubscribe(DiscoveredFeedsInfo feedInfo)
{
bool cancel = false;
if (DiscoveredFeedsSubscribe != null)
{
try {
DiscoveredFeedsInfoCancelEventArgs ea = new DiscoveredFeedsInfoCancelEventArgs(feedInfo, cancel);
DiscoveredFeedsSubscribe(this, ea);
cancel = ea.Cancel;
} catch (Exception ex) {
Log.Error("DiscoveredFeedsSubscribe() event causes an exception", ex);
}
}
return(cancel);
}
private AppButtonToolCommand FindYetDiscoveredFeedMenuItem(DiscoveredFeedsInfo info)
{
if (info == null)
{
return(null);
}
AppButtonToolCommand foundItem = null;
lock (SyncRoot)
{
foreach (AppButtonToolCommand item in discoveredFeeds.Keys)
{
DiscoveredFeedsInfo itemInfo;
if (!discoveredFeeds.TryGetValue(item, out itemInfo))
{
continue;
}
if (0 == String.Compare(itemInfo.SiteBaseUrl, info.SiteBaseUrl, true))
{
foundItem = item;
}
else
{
List <string> knownFeeds = itemInfo.FeedLinks;
foreach (string feedLink in knownFeeds)
{
if (info.FeedLinks.Contains(feedLink))
{
foundItem = item;
break;
}
}
}
if (null != foundItem)
{
break;
}
}
}
return(foundItem);
}
/// <summary>
/// Initializes a new instance of the <see cref="DiscoveredFeedsInfoCancelEventArgs"/> class.
/// </summary>
/// <param name="feedsInfo">The feeds info.</param>
/// <param name="cancel">if set to <c>true</c> [cancel].</param>
internal DiscoveredFeedsInfoCancelEventArgs(DiscoveredFeedsInfo feedsInfo, bool cancel)
{
Cancel = cancel;
this.feedsInfo = feedsInfo;
}
/// <summary>
/// Initializes a new instance of the <see cref="DiscoveredFeedsInfoCancelEventArgs"/> class.
/// </summary>
internal DiscoveredFeedsInfoCancelEventArgs() : base(false)
{
feedsInfo = new DiscoveredFeedsInfo();
}
/// <summary>
/// Initializes a new instance of the <see cref="DiscoveredFeedsInfoEventArgs"/> class.
/// </summary>
/// <param name="feedsInfo">The feeds info.</param>
internal DiscoveredFeedsInfoEventArgs(DiscoveredFeedsInfo feedsInfo)
{
this.feedsInfo = feedsInfo;
}
/// <summary>
/// Thread worker procedure.
/// </summary>
/// <param name="htmlContent"></param>
/// <param name="pageUrl"></param>
/// <param name="pageTitle"></param>
private void AsyncDiscoverFeedsInContent(string htmlContent, string pageUrl, string pageTitle)
{
if (string.IsNullOrEmpty(pageUrl))
{
return;
}
string baseUrl = GetBaseUrlOf(pageUrl);
AppButtonToolCommand foundItem = null;
lock (SyncRoot)
{
// simple search for baseUrl, so we may prevent lookup of the content
foreach (AppButtonToolCommand item in discoveredFeeds.Keys)
{
DiscoveredFeedsInfo info;
if (discoveredFeeds.TryGetValue(item, out info))
{
string url = info.SiteBaseUrl;
if (String.Equals(baseUrl, url, StringComparison.OrdinalIgnoreCase))
{
foundItem = item;
}
}
}
}
if (foundItem != null)
{
foundItem.SharedProps.Caption = StripAndShorten(pageTitle);
}
else
{
NewsComponents.Feed.RssLocater locator = new NewsComponents.Feed.RssLocater(Proxy, RssBanditApplication.UserAgent); //we did not really need the proxy. Content is allready loaded
List <string> feeds = null;
try
{
// You can use this to simplify debugging IEControl HTML output.
// That is slightly different than the HTML we would get from a direct request!
// using(System.IO.StreamWriter writer = System.IO.File.CreateText(System.IO.Path.Combine(System.IO.Path.GetTempPath(), "IEContent.htm"))) {
// writer.Write(htmlContent);
// writer.Flush();
// }
feeds = locator.GetRssFeedsForUrlContent(pageUrl, htmlContent, false);
}
catch (Exception)
{
//catch up all, if it fails, it returns an empty list
}
if (feeds != null && feeds.Count > 0)
{
feeds = this.CheckAndRemoveSubscribedFeeds(feeds, baseUrl);
}
if (feeds != null && feeds.Count > 0)
{
DiscoveredFeedsInfo info = new DiscoveredFeedsInfo(feeds, pageTitle, baseUrl);
this.Add(info);
return;
}
}
RefreshDiscoveredItemContainer();
}
/// <summary>
/// Will add a DiscoveredFeedsInfo entry to the managed tool dropdown.
/// </summary>
/// <param name="info">DiscoveredFeedsInfo instance</param>
public void Add(DiscoveredFeedsInfo info)
{
if (info == null)
{
return;
}
// detect duplicates:
AppButtonToolCommand duplicateItem = FindYetDiscoveredFeedMenuItem(info);
if (duplicateItem != null)
{
// update title/desc:
duplicateItem.SharedProps.Caption = StripAndShorten(info.Title);
duplicateItem.SharedProps.StatusText = info.FeedLinks[0];
lock (SyncRoot) {
// refresh the existing info item to the new one
discoveredFeeds.Remove(duplicateItem);
discoveredFeeds.Add(duplicateItem, info);
}
}
else
{
// new entry:
WinGuiMain guiMain = (WinGuiMain)app.MainForm;
GuiInvoker.InvokeAsync(guiMain, delegate
{
//guiMain.AddAutoDiscoveredUrl(info);
AppButtonToolCommand newItem = new AppButtonToolCommand(
String.Concat("cmdDiscoveredFeed_", ++(cmdKeyPostfix)),
mediator,
OnDiscoveredItemClick,
StripAndShorten(info.Title), info.FeedLinks[0]);
if (itemDropdown.ToolbarsManager.Tools.Exists(newItem.Key))
{
itemDropdown.ToolbarsManager.Tools.Remove(newItem);
}
itemDropdown.ToolbarsManager.Tools.Add(newItem);
newItem.SharedProps.StatusText = info.SiteBaseUrl;
newItem.SharedProps.ShowInCustomizer = false;
lock (SyncRoot)
{
// add a fresh version of info
discoveredFeeds.Add(newItem, info);
}
lock (newDiscoveredFeeds.SyncRoot)
{
// re-order to top of list, in RefreshItemContainer()
newDiscoveredFeeds.Enqueue(newItem);
}
RaiseNewFeedsDiscovered(info);
});
}
RefreshDiscoveredItemContainer();
}
