From db1b00a1587cdf0075cb6e9cfa27f0c53e6e245d Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 4 Jun 2021 05:17:19 +0530
Subject: [PATCH] Fix #1930737 [[Enhancement] Warning is not
 translated](https://bugs.launchpad.net/calibre/+bug/1930737)

---
 src/pyj/read_book/paged_mode.pyj | 6 +-----
 src/pyj/read_book/view.pyj       | 9 +++++++--
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/src/pyj/read_book/paged_mode.pyj b/src/pyj/read_book/paged_mode.pyj
index bc17069196..5438e7449a 100644
--- a/src/pyj/read_book/paged_mode.pyj
+++ b/src/pyj/read_book/paged_mode.pyj
@@ -25,7 +25,6 @@ from __python__ import hash_literals, bound_methods
 
 import traceback
 from elementmaker import E
-from gettext import gettext as _
 
 from dom import set_css
 from read_book.cfi import (
@@ -884,10 +883,7 @@ def resize_done():
 
 def auto_scroll_action(action):
     if action is 'toggle':
-        get_boss().send_message('error', title=_('No auto scroll in paged mode'), msg=_(
-            'Switch to flow mode (Viewer preferences->Page layout) to enable auto'
-            ' scrolling'), is_non_critical=True
-        )
+        get_boss().send_message('error', errkey='no-auto-scroll-in-paged-mode', is_non_critical=True)
     return False
 
 
diff --git a/src/pyj/read_book/view.pyj b/src/pyj/read_book/view.pyj
index 9e158be862..b8d117914a 100644
--- a/src/pyj/read_book/view.pyj
+++ b/src/pyj/read_book/view.pyj
@@ -779,10 +779,15 @@ class View:
 
     def on_iframe_error(self, data):
         title = data.title or _('There was an error processing the book')
+        msg = _('Unknown error')
+        if data.errkey:
+            if data.errkey is 'no-auto-scroll-in-paged-mode':
+                title = _('No auto scroll in paged mode')
+                msg = _('Switch to flow mode (Viewer preferences->Page layout) to enable auto scrolling')
         if data.is_non_critical:
-            warning_dialog(title, data.msg, data.details, on_close=ui_operations.focus_iframe)
+            warning_dialog(title, msg, data.details, on_close=ui_operations.focus_iframe)
             return
-        ui_operations.show_error(title, data.msg, data.details)
+        ui_operations.show_error(title, msg, data.details)
 
     def apply_color_scheme(self):
         self.current_color_scheme = ans = resolve_color_scheme()