Gtk.Entry in Gtk.TreeView (CellRenderer)

Question

I want to pack a Gtk.Entry (with Gtk.EntryCompletion hooked up) into a cell in a Gtk.TreeView. Does anyone know how this can be done? (I just need entry completion on a text entry in a tabular view.)

Do I perhaps need to subclass Gtk.CellRenderer or Gtk.CellRendererText, and override the start_editing method (or similar)? I can find examples of subclassing Gtk.CellRenderer, but not modifying the editable behaviour. I can't find the source-code for the Gtk.CellRendererText class, either.

I'm using Gobject Introspection (i.e. from gi.repository import Gio, Gtk, GLib, Gdk).

Answer 1

Okay, I finally worked out how to do this.

class CellRendererAutoComplete(Gtk.CellRendererText):

    """ Text entry cell which accepts a Gtk.EntryCompletion object """

    __gtype_name__ = 'CellRendererAutoComplete'

    def __init__(self, completion):
        self.completion = completion
        Gtk.CellRendererText.__init__(self)

    def do_start_editing(
               self, event, treeview, path, background_area, cell_area, flags):
        if not self.get_property('editable'):
            return
        entry = Gtk.Entry()
        entry.set_completion(self.completion)
        entry.connect('editing-done', self.editing_done, path)
        entry.show()
        entry.grab_focus()
        return entry

    def editing_done(self, entry, path):
        self.emit('edited', path, entry.get_text())

Inspiration dervied from the PyGTK FAQ, and adapted to pygobject.