Refactor some code from Notebook into a standalone function that finds all descendant widgets of a given container that are Containers or Terminals and returns lists of them, and use this when closing a tab. This function will form the basis of layout enumeration

terminatorlib/container.py

@@ -60,7 +60,7 @@ class Container(object):
         self.cnxids.remove_widget(widget)
 
     def get_offspring(self):
-        """Return a list of child widgets, if any"""
+        """Return a list of direct child widgets, if any"""
         return(self.children)
 
     def split_horiz(self, widget):

terminatorlib/notebook.py

@@ -12,7 +12,7 @@ from factory import Factory
 from container import Container
 from editablelabel import EditableLabel
 from translation import _
-from util import err, dbg, get_top_window
+from util import err, dbg, get_top_window, enumerate_descendants
 
 class Notebook(Container, gtk.Notebook):
     """Class implementing a gtk.Notebook container"""
@@ -179,21 +179,9 @@ class Notebook(Container, gtk.Notebook):
             dialog.destroy()
 
             if result == gtk.RESPONSE_ACCEPT:
-                containers = []
-                objects = []
-                for descendant in child.get_children():
-                    if maker.isinstance(descendant, 'Container'):
-                        containers.append(descendant)
-                    elif maker.isinstance(descendant, 'Terminal'):
-                        objects.append(descendant)
-
-                while len(containers) > 0:
-                    child = containers.pop()
-                    for descendant in child.get_children():
-                        if maker.isinstance(descendant, 'Container'):
-                            containers.append(descendant)
-                        elif maker.isinstance(descendant, 'Terminal'):
-                            objects.append(descendant)
+                containers = None
+                objects = None
+                containers, objects = enumerate_descendants(child)
 
                 while len(objects) > 0:
                     descendant = objects.pop()

terminatorlib/terminator.py

@@ -61,6 +61,7 @@ class Terminator(Borg):
         self.windows.remove(window)
         if len(self.windows) == 0:
             # We have no windows left, we should exit
+            dbg('no windows remain, quitting')
             gtk.main_quit()
 
     def register_terminal(self, terminal):
@@ -79,6 +80,7 @@ class Terminator(Borg):
         self.terminals.remove(terminal)
 
         if len(self.terminals) == 0:
+            dbg('no terminals remain, destroying all windows')
             for window in self.windows:
                 window.destroy()
         else:

terminatorlib/util.py

@@ -229,3 +229,38 @@ def get_nav_tiebreak(direction, cursor_x, cursor_y, rect):
     else:
         raise ValueError('Unknown direction: %s' % direction)
 
+def enumerate_descendants(parent):
+    """Walk all our children and build up a list of containers and
+    terminals"""
+    # FIXME: Does having to import this here mean we should move this function
+    # back to Container?
+    from factory import Factory
+
+    containerstmp = []
+    containers = []
+    terminals = []
+    maker = Factory()
+
+    if parent is None:
+        err('no parent widget specified')
+        return
+
+    for descendant in parent.get_children():
+        if maker.isinstance(descendant, 'Container'):
+            containerstmp.append(descendant)
+        elif maker.isinstance(descendant, 'Terminal'):
+            terminals.append(descendant)
+
+        while len(containerstmp) > 0:
+            child = containerstmp.pop()
+            for descendant in child.get_children():
+                if maker.isinstance(descendant, 'Container'):
+                    containerstmp.append(descendant)
+                elif maker.isinstance(descendant, 'Terminal'):
+                    terminals.append(descendant)
+            containers.append(child)
+
+    dbg('%d containers and %d terminals fall beneath %s' % (len(containers), 
+        len(terminals), parent))
+    return(containers, terminals)
+