From 94cc7a0cbdd658edebe0f288865e4be1aa7ab1ed Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 3 Mar 2011 19:34:25 -0700
Subject: [PATCH] ...

---
 src/calibre/gui2/dialogs/scheduler.py |  4 +---
 src/calibre/gui2/tag_view.py          | 15 ++++++++++++++-
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/src/calibre/gui2/dialogs/scheduler.py b/src/calibre/gui2/dialogs/scheduler.py
index 48d0d67255..460e1d9fdb 100644
--- a/src/calibre/gui2/dialogs/scheduler.py
+++ b/src/calibre/gui2/dialogs/scheduler.py
@@ -264,10 +264,8 @@ class Scheduler(QObject):
                 ids = list(self.recipe_model.db.tags_older_than(_('News'),
                     delta))
             except:
-                # Should never happen
+                # Happens if library is being switched
                 ids = []
-                import traceback
-                traceback.print_exc()
             if ids:
                 if ids:
                     self.delete_old_news.emit(ids)
diff --git a/src/calibre/gui2/tag_view.py b/src/calibre/gui2/tag_view.py
index 0a65b8da67..3f347069a9 100644
--- a/src/calibre/gui2/tag_view.py
+++ b/src/calibre/gui2/tag_view.py
@@ -1135,7 +1135,7 @@ class TagsModel(QAbstractItemModel): # {{{
                 collapse_model = 'partition'
                 collapse_template = tweaks['categories_collapsed_popularity_template']
 
-        def process_one_node(category, state_map):
+        def process_one_node(category, state_map): # {{{
             collapse_letter = None
             category_index = self.createIndex(category.row(), 0, category)
             category_node = category_index.internalPointer()
@@ -1277,6 +1277,7 @@ class TagsModel(QAbstractItemModel): # {{{
                         # This id_set must not be None
                         node_parent.id_set |= tag.id_set
             return
+        # }}}
 
         for category in self.category_nodes:
             if len(category.children) > 0:
@@ -2079,6 +2080,10 @@ class TagBrowserWidget(QWidget): # {{{
                 _('Add your own categories to the Tag Browser'))
         parent.edit_categories.setStatusTip(parent.edit_categories.toolTip())
 
+        # self.leak_test_timer = QTimer(self)
+        # self.leak_test_timer.timeout.connect(self.test_for_leak)
+        # self.leak_test_timer.start(5000)
+
     def set_pane_is_visible(self, to_what):
         self.tags_view.set_pane_is_visible(to_what)
 
@@ -2140,5 +2145,13 @@ class TagBrowserWidget(QWidget): # {{{
     def not_found_label_timer_event(self):
         self.not_found_label.setVisible(False)
 
+    def test_for_leak(self):
+        from calibre.utils.mem import memory
+        import gc
+        before = memory()
+        self.tags_view.recount()
+        for i in xrange(3): gc.collect()
+        print 'Used memory:', memory(before)/(1024.), 'KB'
+
 # }}}