private void AddToUndo(string SourceFilename, string DestFilename, UndoMode mode, int picIndex)
{
UndoData u = new UndoData();
u.source = SourceFilename;
u.dest = DestFilename;
u.mode = mode;
u.picIndex = picIndex;
undo.Push(u);
mainForm.FileManagementCallback(new UndoCallbackData(UndoCallbackEvent.UndoUpdated, u));
}
public void UndoLastFileOperation()
{
bool bContinue = true;
string errors = "";
string lastItemGroup = "unset";
if (undo.Count == 0)
{
MessageBox.Show(_("Nothing to undo..."), _("Oops"), MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
bool stopGoto = false;
int num = 0;
string oldCurPath = mainForm.GetCurPicPath();
// CurPath must be no duplicates
while (bContinue)
{
if (undo.Count == 0 ||
lastItemGroup != "unset" && lastItemGroup != undo.Peek().actionGroup) // Assume that batch data is continuous
{
if (stopGoto && num > 0) // Refresh when undoing a batch of deletions, keep in current picture.
{
mainForm.PicGotoCallback(-1, oldCurPath);
}
break; // emptied or this is new undo group
}
UndoData u = undo.Pop();
lastItemGroup = u.actionGroup;
if (u.mode == UndoMode.Copy)
{
DeleteFile(u.dest, false); // delete copy of original file
}
else if (u.mode == UndoMode.Move)
{
AppSettings s = new AppSettings();
s.FileMode = FileOperations.Move;
s.ExistingFiles = ExistingFileOptions.Overwrite;
errors += CopyMoveFile(u.dest, u.source, s, -1, false) + "\n"; // move back file
}
else if (u.mode == UndoMode.Rename)
{
RenameFile(u.dest, u.source, -1, false); // rename back to original filename
}
else if (u.mode == UndoMode.Delete)
{
Undelete(u.source);
stopGoto = true; // better performance for a batch
}
num++;
mainForm.FileManagementCallback(new UndoCallbackData(UndoCallbackEvent.UndoPerformed, u), stopGoto);
}
if (!string.IsNullOrWhiteSpace(errors))
{
MessageBox.Show("Error copying/moving file: \n\n" + errors, "File Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
