public override void Merge(EditAction action)
{
EraseAction erase = (EraseAction)action;
if (start == erase.start)
{
end += erase.end - erase.start;
chop.End = erase.chop.End;
// Delete the marks, leave the text
erase.chop.Destroy();
}
else
{
start = erase.start;
Gtk.TextIter chop_start = chop.Start;
chop.Buffer.InsertRange(ref chop_start,
erase.chop.Start,
erase.chop.End);
// Delete the marks and text
erase.Destroy();
}
}
public override bool CanMerge(EditAction action)
{
EraseAction erase = action as EraseAction;
if (erase == null)
{
return(false);
}
// Don't group separate text cuts
if (is_cut || erase.is_cut)
{
return(false);
}
// Must meet eachother
if (start != (is_forward ? erase.start : erase.end))
{
return(false);
}
// Don't group deletes with backspaces
if (is_forward != erase.is_forward)
{
return(false);
}
// Group if something other than text was deleted
// (e.g. an email image)
if (chop.Text.Length == 0 || erase.chop.Text.Length == 0)
{
return(true);
}
// Don't group more than one line (inclusive)
if (chop.Text[0] == '\n')
{
return(false);
}
// Don't group more than one word (exclusive)
if (erase.chop.Text[0] == ' ' || erase.chop.Text[0] == '\t')
{
return(false);
}
return(true);
}
void OnDeleteRange(object sender, Gtk.DeleteRangeArgs args)
{
if (frozen_cnt == 0)
{
EraseAction action = new EraseAction(args.Start,
args.End,
chop_buffer);
/*
* Delete works a lot like insert here, except
* there are two positions in the buffer that
* may need to have their tags removed.
*/
frozen_cnt++;
action.Split(args.Start, buffer);
action.Split(args.End, buffer);
frozen_cnt--;
AddUndoAction(action);
}
}
void OnDeleteRange (object sender, Gtk.DeleteRangeArgs args)
{
if (frozen_cnt == 0) {
EraseAction action = new EraseAction (args.Start,
args.End,
chop_buffer);
/*
* Delete works a lot like insert here, except
* there are two positions in the buffer that
* may need to have their tags removed.
*/
frozen_cnt++;
action.Split (args.Start, buffer);
action.Split (args.End, buffer);
frozen_cnt--;
AddUndoAction (action);
}
}