feed.py 文件源码

def _build_add_button(self, label=None, on_signal="clicked",
                          callback=None):
        """
        Build an add button usable in side bar menu.
        This button triggers allow the creation of a new element in the menu.
        """
        if not label:
            label = "Add"
        button = Gtk.Button(label, stock=Gtk.STOCK_ADD)
        button.set_margin_top(12)
        button.set_size_request(250, 20)
        if callback:
            button.connect(on_signal, callback)

        return button