public void Refresh () {
if (lastRefresh == DateTime.MinValue) {
// we never successfully loaded the CFL, so let's do it again
Load();
return;
}
IFeedsManager fs = new FeedsManagerClass();
try {
IFeedFolder folder = (IFeedFolder)fs.GetFolder(Properties.Settings.Default.ImagePathOverride);
foreach (IFeed feed in FeedUtility.LastWriteSince(folder, lastRefresh)) {
WebFeed rssFeed = null;
try {
// This feed was updated or is new, let's get it.
rssFeed = WebFeed.FromApi(feed);
} catch (System.Runtime.InteropServices.COMException ex) {
System.Diagnostics.Debug.Print("Failed to get RSS feed '{0}' from API; skipping feed. Error: {1} ", feed.Name, ex.ToString());
continue; // Skip this feed.
}
// If the feed has no items with picture enclosures then skip it.
if (rssFeed == null || rssFeed.Items.Count == 0) {
System.Diagnostics.Debug.Print("Feed '{0}' does not have any picture enclosures; skipping feed.", feed.Name);
continue;
}
// Before we add it let's see if we have an old version of the feed.
int index = webFeeds.FindIndex(delegate(WebFeed f) { return (f.Path == rssFeed.Path); });
if (index == -1) {
// This must be a new feed, let's append it to the list.
webFeeds.Add(rssFeed);
} else {
// We have an existing feed with the same path. Let's insert it
// where the previous feed is at.
webFeeds.Insert(index, rssFeed);
// Remove previous feed.
webFeeds.RemoveAt(index + 1);
// Assure that current indexes are not out of bounds.
ValidateIndexes();
}
}
} finally {
GC.Collect(); // Release all COM objects and their file handles.
lastRefresh = DateTime.Now;
}
}
public void Load () {
DateTime loadstart = DateTime.Now;
List<WebFeed> newRssFeeds = new List<WebFeed>();
try {
IFeedsManager fs = new FeedsManagerClass();
IFeedFolder folder = (IFeedFolder)fs.GetFolder(Properties.Settings.Default.ImagePathOverride);
foreach (IFeed feed in FeedUtility.CommonFeedList(folder)) {
System.Diagnostics.Debug.Print("Found feed {0} with {1} items.",
feed.Name, ((IFeedsEnum)feed.Items).Count);
try {
WebFeed rssFeed = WebFeed.FromApi(feed);
// Only add this feed if it contains items
if (rssFeed != null) {
System.Diagnostics.Debug.Print("Feed has {0} items with enclosures.", rssFeed.Items.Count);
if (rssFeed.Items.Count > 0)
newRssFeeds.Add(rssFeed);
} else
System.Diagnostics.Debug.Print("Feed is null.");
} catch (System.Runtime.InteropServices.COMException ex) {
System.Diagnostics.Debug.Print("Failed to get RSS feed '{0}' from API; skipping feed. Error: {1} ", feed.Name, ex.ToString());
// Ignore exception, meaning ignore this feed and continue with next feed.
}
}
} finally {
// Collect garbage so that all the COM objects are released which
// closes the backing structured storage files.
GC.Collect();
}
if (newRssFeeds.Count == 0) {
// There were no suitable feeds, hence get default feeds from resources.
System.Diagnostics.Debug.Print("There were no suitable feeds, hence get default feeds from resources.");
WebFeed rssFeed = WebFeed.FromText(Properties.Resource.DefaultRSSText);
newRssFeeds.Add(rssFeed);
}
this.webFeeds = newRssFeeds;
// reset current indexes
currentFeedIndex = -1;
currentItemIndex = -1;
MoveNext();
lastRefresh = loadstart;
}
