Issue #18592: Add docstrings to file being tested (idlelib.SearchDialogBase.py).
diff --git a/Lib/idlelib/SearchDialogBase.py b/Lib/idlelib/SearchDialogBase.py
index f63e7ae..bd1717a 100644
--- a/Lib/idlelib/SearchDialogBase.py
+++ b/Lib/idlelib/SearchDialogBase.py
@@ -1,6 +1,23 @@
+'''Define SearchDialogBase used by Search, Replace, and Grep dialogs.'''
from Tkinter import *
class SearchDialogBase:
+ '''Create most of a modal search dialog (make_frame, create_widgets).
+
+ The wide left column contains:
+ 1 or 2 text entry lines (create_entries, make_entry);
+ a row of standard radiobuttons (create_option_buttons);
+ a row of dialog specific radiobuttons (create_other_buttons).
+
+ The narrow right column contains command buttons
+ (create_command_buttons, make_button).
+ These are bound to functions that execute the command.
+
+ Except for command buttons, this base class is not limited to
+ items common to all three subclasses. Rather, it is the Find dialog
+ minus the "Find Next" command and its execution function.
+ The other dialogs override methods to replace and add widgets.
+ '''
title = "Search Dialog"
icon = "Search"