utils.py 文件源码

def find_child_by_id(root, name):
    """
        Searches through a hierarchy of Gtk widgets for the `name`d

        Returns None if no such child was found.
    """
    # We do a breadth-first search
    next_level = [root]
    while next_level:
        children = next_level
        next_level = []
        for child in children:
            if child is None:
                continue
            if Gtk.Buildable.get_name(child) == name:
                # Bingo
                return child
            if hasattr(child, 'get_children'):
                next_level.extend(child.get_children())
    # Hierarchy exhausted. Ho hum.