public void CloseFile(OpenFileViewModel file)
{
int index = OpenFiles.IndexOf(file);
Debug.Assert(index >= 0);
file.Dispose();
OpenFiles.RemoveAt(index);
if (--index < 0)
{
index = 0;
}
if (OpenFiles.Count > 0)
{
SelectedFile = OpenFiles[index];
}
}
/// <summary>
/// Closes the file
/// </summary>
/// <param name="File">File to close</param>
public virtual void CloseFile(FileViewModel file)
{
if (file != null)
{
var args = new FileClosingEventArgs();
args.File = file;
FileClosing?.Invoke(this, args);
if (!args.Cancel)
{
for (var i = OpenFiles.Count - 1; i >= 0; i--)
{
if (ReferenceEquals(OpenFiles[i], file))
{
OpenFiles[i].Dispose();
var openFilesCount = OpenFiles.Count;
try
{
OpenFiles.RemoveAt(i);
}
catch (NullReferenceException)
{
// There's been a bug in a dependency where OpenFiles.RemoveAt fails because of UI stuff.
// If the same exception is encountered, and the file has actually been removed, then ignore it.
if (openFilesCount <= OpenFiles.Count) // OpenFiles.Count should have decreased by 1. If it has not, then throw the exception.
{
throw;
}
}
}
}
if (ReferenceEquals(file, SelectedFile))
{
SelectedFile = null;
}
FileClosed?.Invoke(this, new FileClosedEventArgs {
File = file.Model
});
}
}
}
