From: Louie Lu <git@louie.lu>
Date: Fri, 7 Jul 2017 07:51:58 +0000 (+0800)
Subject: bpo-30870: IDLE: Change sample font when select by key-up/down
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=62f063ad09a467ad419370dd4cc9d026331c430f;p=thirdparty%2FPython%2Fcpython.git

bpo-30870: IDLE: Change sample font when select by key-up/down
---

diff --git a/Lib/idlelib/configdialog.py b/Lib/idlelib/configdialog.py
index 840922751836..982380c0d474 100644
--- a/Lib/idlelib/configdialog.py
+++ b/Lib/idlelib/configdialog.py
@@ -14,7 +14,7 @@ from tkinter import (Toplevel, Frame, LabelFrame, Listbox, Label, Button,
                      StringVar, BooleanVar, IntVar, TRUE, FALSE,
                      TOP, BOTTOM, RIGHT, LEFT, SOLID, GROOVE, NORMAL, DISABLED,
                      NONE, BOTH, X, Y, W, E, EW, NS, NSEW, NW,
-                     HORIZONTAL, VERTICAL, ANCHOR, END)
+                     HORIZONTAL, VERTICAL, ANCHOR, ACTIVE, END)
 from tkinter.ttk import Scrollbar
 import tkinter.colorchooser as tkColorChooser
 import tkinter.font as tkFont
@@ -157,8 +157,9 @@ class ConfigDialog(Toplevel):
                 frame_font_name, justify=LEFT, text='Font Face :')
         self.list_fonts = Listbox(
                 frame_font_name, height=5, takefocus=FALSE, exportselection=FALSE)
-        self.list_fonts.bind(
-                '<ButtonRelease-1>', self.on_list_fonts_button_release)
+        self.list_fonts.bind('<ButtonRelease-1>', self.on_list_fonts_button_release)
+        self.list_fonts.bind('<KeyRelease-Up>', self.on_list_fonts_key_release)
+        self.list_fonts.bind('<KeyRelease-Down>', self.on_list_fonts_key_release)
         scroll_font = Scrollbar(frame_font_name)
         scroll_font.config(command=self.list_fonts.yview)
         self.list_fonts.config(yscrollcommand=scroll_font.set)
@@ -1033,6 +1034,11 @@ class ConfigDialog(Toplevel):
         self.font_name.set(font.lower())
         self.set_font_sample()
 
+    def on_list_fonts_key_release(self, event):
+        font = self.list_fonts.get(ACTIVE)
+        self.font_name.set(font.lower())
+        self.set_font_sample()
+
     def set_font_sample(self, event=None):
         "Update the screen samples with the font settings from the dialog."
         font_name = self.font_name.get()