/// <summary>
/// Display file system objects in the path as thumbnails, or open viewer depending on the file type and parameters.
/// Main open logic is set here.
/// Support cancellation. Used in Task.
/// </summary>
internal void LoadPath(ObjectInfo objInfo, ViewWindow viewWin = null)
{
// action based on flags
if (objInfo.Flags.HasFlag(FileFlags.Directory))
{
//directory -> load thumbs
try {
tknSrc_LoadThumb?.Cancel();
Monitor.Enter(lock_LoadThumb);
tknSrc_LoadThumb = new CancellationTokenSource();
preRefreshActions();
CurrentPath = objInfo.FileSystemPath;
foreach (var childInfo in new DirectoryInfo(objInfo.FileSystemPath).EnumerateFileSystemInfos())
{
if (tknSrc_LoadThumb?.IsCancellationRequested == true)
{
return;
}
var flag = GetPathType(childInfo);
callback_AddToImageList(new ObjectInfo(childInfo.FullName, flag, childInfo.Name));
}
Dispatcher.Invoke(() => scrollPosition());
}
finally {
tknSrc_LoadThumb.Dispose();
tknSrc_LoadThumb = null;
Monitor.Exit(lock_LoadThumb);
}
}
else if (objInfo.Flags.HasFlag(FileFlags.Image))
{
//plain image file or image inside archive -> open viewer
//using a new ObjectInfo to avoid confusion and reduce chance of holding ImageSource
Dispatcher.Invoke(() => {
if (viewWin == null)
{
new ViewWindow(objInfo.ContainerPath, objInfo.FileName).Show();
}
else
{
viewWin.ViewPath = (objInfo.ContainerPath, objInfo.FileName);
}
});
}
else if (objInfo.Flags.HasFlag(FileFlags.Archive))
{
//archive itself -> extract and load thumbs
try {
tknSrc_LoadThumb?.Cancel();
Monitor.Enter(lock_LoadThumb);
tknSrc_LoadThumb = new CancellationTokenSource();
preRefreshActions();
CurrentPath = objInfo.FileSystemPath;
ExtractZip(new LoadOptions(objInfo.FileSystemPath)
{
Flags = objInfo.Flags,
LoadImage = true,
DecodeSize = (SizeInt)Setting.ThumbnailSize,
CldInfoCallback = callback_AddToImageList,
}, tknSrc_LoadThumb);
Dispatcher.Invoke(() => scrollPosition());
}
finally {
tknSrc_LoadThumb.Dispose();
tknSrc_LoadThumb = null;
Monitor.Exit(lock_LoadThumb);
}
}
}