From f3f4bdb023baa4858e5217feb1b70953fe9fa22a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 27 Feb 2013 14:12:59 +0530
Subject: [PATCH] Add an option to optimize the calibre UI for use with large
 numbers of libraries. With this option, the Quick Switch and Copy to Library
 menus will remember more than just 25 libraries and the libraries will be
 sorted alphabetically instead of by most frequently used. Option is under
 Preferences->Behavior. Fixes #1133691 (feature request: again: sort entries
 in "quick switch")

---
 src/calibre/gui2/__init__.py               |  1 +
 src/calibre/gui2/actions/choose_library.py |  9 ++++++---
 src/calibre/gui2/preferences/behavior.py   |  1 +
 src/calibre/gui2/preferences/behavior.ui   | 12 ++++++++++++
 4 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/calibre/gui2/__init__.py b/src/calibre/gui2/__init__.py
index 4a6ff9bb93..1c8ce880fe 100644
--- a/src/calibre/gui2/__init__.py
+++ b/src/calibre/gui2/__init__.py
@@ -110,6 +110,7 @@ defs['bd_overlay_cover_size'] = False
 defs['tags_browser_category_icons'] = {}
 defs['cover_browser_reflections'] = True
 defs['extra_row_spacing'] = 0
+defs['many_libraries'] = False
 del defs
 # }}}
 
diff --git a/src/calibre/gui2/actions/choose_library.py b/src/calibre/gui2/actions/choose_library.py
index d830970057..80dae2a917 100644
--- a/src/calibre/gui2/actions/choose_library.py
+++ b/src/calibre/gui2/actions/choose_library.py
@@ -16,6 +16,7 @@ from calibre import isbytestring, sanitize_file_name_unicode
 from calibre.constants import (filesystem_encoding, iswindows,
         get_portable_base)
 from calibre.utils.config import prefs
+from calibre.utils.icu import sort_key
 from calibre.gui2 import (gprefs, warning_dialog, Dispatcher, error_dialog,
     question_dialog, info_dialog, open_local_file, choose_dir)
 from calibre.library.database2 import LibraryDatabase2
@@ -46,7 +47,7 @@ class LibraryUsageStats(object): # {{{
         locs = list(self.stats.keys())
         locs.sort(cmp=lambda x, y: cmp(self.stats[x], self.stats[y]),
                 reverse=True)
-        for key in locs[25:]:
+        for key in locs[(10000 if gprefs['many_libraries'] else 25):]:
             self.stats.pop(key)
         gprefs.set('library_usage_stats', self.stats)
 
@@ -72,8 +73,10 @@ class LibraryUsageStats(object): # {{{
         locs = list(self.stats.keys())
         if lpath in locs:
             locs.remove(lpath)
-        locs.sort(cmp=lambda x, y: cmp(self.stats[x], self.stats[y]),
-                reverse=True)
+        if gprefs['many_libraries']:
+            locs.sort(key=sort_key)
+        else:
+            locs.sort(key=lambda x: self.stats[x], reverse=True)
         for loc in locs:
             yield self.pretty(loc), loc
 
diff --git a/src/calibre/gui2/preferences/behavior.py b/src/calibre/gui2/preferences/behavior.py
index b5070cbdea..caab2d8dd6 100644
--- a/src/calibre/gui2/preferences/behavior.py
+++ b/src/calibre/gui2/preferences/behavior.py
@@ -60,6 +60,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             signal.connect(self.internally_viewed_formats_changed)
 
         r('bools_are_tristate', db.prefs, restart_required=True)
+        r('many_libraries', gprefs, restart_required=True)
         r = self.register
         choices = [(_('Default'), 'default'), (_('Compact Metadata'), 'alt1'),
                    (_('All on 1 tab'), 'alt2')]
diff --git a/src/calibre/gui2/preferences/behavior.ui b/src/calibre/gui2/preferences/behavior.ui
index ffd59d72bb..533ee96c4d 100644
--- a/src/calibre/gui2/preferences/behavior.ui
+++ b/src/calibre/gui2/preferences/behavior.ui
@@ -284,6 +284,18 @@ If not checked, the values can be Yes or No.</string>
      </property>
     </widget>
    </item>
+   <item row="4" column="0">
+    <widget class="QCheckBox" name="opt_many_libraries">
+     <property name="toolTip">
+      <string>Optimizes the interface for use with a large number of libraries. calibre will
+now remeber unlimited numbers of libraries in its Quick Switch and Copy to Library
+menus, and the libraries will be sorted alphabetically.</string>
+     </property>
+     <property name="text">
+      <string>Optimize for use with many &amp;libraries (Requires restart)</string>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <resources>