void UpdateDesktopItemsList ()
{
if (RegisteredItems == null)
RegisteredItems = new List<DesktopItem> ();
List<DesktopItem> newItems = new List<DesktopItem> ();
IEnumerable<DesktopItem> knownItems = DesktopItems;
// Get desktop items for new "valid" desktop files
newItems = DesktopFileDirectories
.SelectMany (dir => dir.SubDirs ())
.Union (DesktopFileDirectories)
.SelectMany (dir => dir.GetFiles (".desktop"))
.Where (file => !knownItems.Any (existing => existing.File.Path == file.Path))
.Select (file => new DesktopItem (file))
.ToList ();
RegisteredItems.AddRange (newItems);
if (newItems.Count () > 0) {
Log<DesktopItemService>.Debug ("{0} new application(s) found.", newItems.Count ());
foreach (DesktopItem item in newItems)
Log<DesktopItemService>.Debug ("Adding '{0}'.", item.Path);
}
// Check file existence and remove unlinked items
List<DesktopItem> removeItems = RegisteredItems.Where (item => !item.File.Exists).ToList ();
if (removeItems.Count > 0) {
removeItems.ForEach (item => {
RegisteredItems.Remove (item);
item.Dispose ();
});
Log<DesktopItemService>.Debug ("{0} application(s) removed.", removeItems.Count);
}
}