/// <summary>
/// Given an absolute path to a directory, scan that directory for
/// .desktop files, creating an ApplicationItem for each desktop file
/// found and adding the ApplicationItem to the list of
/// ApplicationItems.
/// </summary>
/// <param name="dir">
/// A <see cref="System.String"/> containing an absolute path to a
/// directory
/// where .desktop files can be found.
/// </param>
IEnumerable <KeyValuePair <string, ApplicationItem> > LoadDesktopFiles(string dir)
{
return(GetDesktopFiles(dir)
.Where(ShouldUseDesktopFile)
.Select(f => new KeyValuePair <string, ApplicationItem> (f, ApplicationItem.MaybeCreateFromDesktopItem(f)))
.Where(a => a.Value != null)
.Where(a => a.Value.ShouldShow));
}
void OnFileRenamed(object sender, RenamedEventArgs e)
{
Item disappearingItem = null;
ApplicationItem newItem = null;
lock (app_items) {
if (app_items.ContainsKey(e.OldFullPath))
{
Log <ApplicationItemSource> .Debug("Desktop file {0} moved away", e.OldFullPath);
disappearingItem = app_items[e.OldFullPath];
app_items.Remove(e.OldFullPath);
}
if (e.FullPath.EndsWith(".desktop", StringComparison.Ordinal))
{
Log <ApplicationItemSource> .Debug("Desktop file {0} moved into watched directory", e.FullPath);
newItem = ApplicationItem.MaybeCreateFromDesktopItem(e.FullPath);
if (newItem == null)
{
Log.Error("Found new Desktop file {0} but unable to create an item in the Universe", e.FullPath);
}
else
{
app_items [e.FullPath] = newItem;
}
}
}
if (disappearingItem != null)
{
RaiseItemsUnavailable(new ItemsUnavailableEventArgs()
{
unavailableItems = new Item[] { disappearingItem }
});
}
if (newItem != null)
{
RaiseItemsAvailable(new ItemsAvailableEventArgs()
{
newItems = new Item[] { newItem }
});
}
}
void OnFileCreated(object sender, FileSystemEventArgs e)
{
Log <ApplicationItemSource> .Debug("New Desktop file found: {0}", e.FullPath);
var newItem = ApplicationItem.MaybeCreateFromDesktopItem(e.FullPath);
if (newItem == null)
{
Log.Error("Found new Desktop file {0} but unable to create an item in the Universe", e.FullPath);
return;
}
lock (app_items) {
if (app_items.ContainsKey(e.FullPath))
{
Log.Error("Attempting to add duplicate ApplicationItem {0} to Universe", e.FullPath);
return;
}
app_items[e.FullPath] = newItem;
}
RaiseItemsAvailable(new ItemsAvailableEventArgs()
{
newItems = new Item[] { newItem }
});
}
