Class TixSubWidget

tools/python-3.11.9-amd64/Lib/tkinter/tix.py:416–467

Subwidget class. This is used to mirror child widgets automatically created by Tix/Tk as part of a mega-widget in Python (which is not informed of this)

# In python, we have to create these subwidgets manually to mirror their
# existence in Tk/Tix.
class TixSubWidget(TixWidget):
    """Subwidget class.

    This is used to mirror child widgets automatically created
    by Tix/Tk as part of a mega-widget in Python (which is not informed
    of this)"""

    def __init__(self, master, name,
               destroy_physically=1, check_intermediate=1):
        if check_intermediate:
            path = master._subwidget_name(name)
            try:
                path = path[len(master._w)+1:]
                plist = path.split('.')
            except:
                plist = []

        if not check_intermediate:
            # immediate descendant
            TixWidget.__init__(self, master, None, None, {'name' : name})
        else:
            # Ensure that the intermediate widgets exist
            parent = master
            for i in range(len(plist) - 1):
                n = '.'.join(plist[:i+1])
                try:
                    w = master._nametowidget(n)
                    parent = w
                except KeyError:
                    # Create the intermediate widget
                    parent = TixSubWidget(parent, plist[i],
                                          destroy_physically=0,
                                          check_intermediate=0)
            # The Tk widget name is in plist, not in name
            if plist:
                name = plist[-1]
            TixWidget.__init__(self, parent, None, None, {'name' : name})
        self.destroy_physically = destroy_physically

    def destroy(self):
        # For some widgets e.g., a NoteBook, when we call destructors,
        # we must be careful not to destroy the frame widget since this
        # also destroys the parent NoteBook thus leading to an exception
        # in Tkinter when it finally calls Tcl to destroy the NoteBook
        for c in list(self.children.values()): c.destroy()
        if self._name in self.master.children:
            del self.master.children[self._name]
        if self._name in self.master.subwidget_list:
            del self.master.subwidget_list[self._name]
        if self.destroy_physically:
            # This is bypassed only for a few widgets
            self.tk.call('destroy', self._w)


# Useful class to create a display style - later shared by many items.