private int SetAltIndex(FolderItemControl item, int index)
{
const int altCount = 2;
if (index >= altCount)
{
index = 0;
}
item.AltIndex = index++;
item.Update();
if (item.IsExpanded && item.Items.Count > 0)
{
foreach (FolderItemControl subItem in item.Items)
{
index = SetAltIndex(subItem, index);
}
}
return(index);
}
private void AddFolder(DirectoryInfo dir, ItemsControl item, int level)
{
try
{
if (item != null && dir.Exists)
{
string name;
int photosCount;
// Root folder. Display volume label and drive type
if (dir.Parent == null)
{
var drive = new DriveInfo(dir.Name);
if (drive.VolumeLabel != "")
{
name = drive.VolumeLabel;
}
else
{
name = DriveTypeToString(drive.DriveType);
}
}
// Display folder name
else if ((dir.Attributes & FileAttributes.Hidden) != FileAttributes.Hidden)
{
name = dir.Name;
}
// Skip hidden folders
else
{
return;
}
var newItem = new FolderItemControl();
newItem.FullName = dir.FullName;
item.Items.Add(newItem);
foreach (DirectoryInfo subDir in dir.GetDirectories())
{
AddFolder(subDir, newItem, level + 1);
}
photosCount = GetPhotosCount(newItem);
if (photosCount > 0)
{
newItem.ShortName = name;
newItem.Date = dir.LastWriteTime;
newItem.PhotosCount = photosCount;
newItem.Level = level;
newItem.Update();
newItem.Checked += new RoutedEventHandler(CheckedHandler);
newItem.ExpandedCollapsed += new RoutedEventHandler(ExpandedCollapsedHandler);
newItem.VisibilityChanged += new DependencyPropertyChangedEventHandler(VisibilityChangedHandler);
}
else
{
item.Items.Remove(newItem);
newItem = null;
}
}
}
catch (Exception e)
{
ExecutionEngine.EventLogger.WriteExceptionInfo(e);
}
}