private void PreviewAdd(MediaItemViewModel item, string path)
{
if (_removed.Contains(item))
{
_removed.Remove(item);
}
else
{
FileStream fileStream;
try
{
fileStream = File.OpenRead(path);
}
catch (Exception exc)
{
OnError(exc);
return;
}
_added.Add(item);
_streams[item] = Tuple.Create(path, fileStream);
}
Files.Add(item);
OnPropertyChanged(nameof(Files));
HasPendingChanges = IsChanged();
}
private MediaItemViewModel CreateItem(string item)
{
var named = new MediaItemViewModel(new Named(item), _name, () => Wrap(item));
named.Model.PropertyChanged += Named_PropertyChanged;
return(named);
}
private void PreviewRemove(MediaItemViewModel name)
{
if (_added.Contains(name))
{
_added.Remove(name);
_streams[name].Item2.Dispose();
_streams.Remove(name);
}
else
{
_removed.Add(name);
}
Files.Remove(name);
OnPropertyChanged(nameof(Files));
}
private void SelectAtomObject_Do(string mediaType, MediaItemViewModel file, bool asAnswer)
{
var index = CurrentPosition;
if (index == -1)
{
index = Count - 1;
}
OwnerDocument.BeginChange();
try
{
if (asAnswer)
{
if (!_isComplex)
{
AddMarker_Executed(null);
index = Count - 1;
}
}
else if (string.IsNullOrWhiteSpace(this[index].Model.Text))
{
RemoveAt(index--);
}
var atom = new AtomViewModel(new Atom {
Type = mediaType, Text = ""
});
Insert(index + 1, atom);
OwnerDocument.Document.SetLink(atom.Model, file.Model.Name);
OwnerDocument.ActiveItem = null;
}
catch (Exception exc)
{
OwnerDocument.OnError(exc);
}
finally
{
OwnerDocument.CommitChange();
}
}