Fix #3393 (Browse by Tags - tree closes)

src/calibre/gui2/tag_view.py

@@ -122,21 +122,49 @@ class TagsModel(QStandardItemModel):
                 self._data[category], self.cmap[r], self.bold_font, self.icon_map))
         #self.reset()
 
+    def reset_all_states(self):
+        changed_indices = []
+        for category in self._data.values():
+            Category = self.find_category(category)
+            for tag in category:
+                if tag.state != 0:
+                    tag.state = 0
+                    if Category is not None:
+                        Tag = self.find_tag(tag, Category)
+                        if Tag is not None:
+                            changed_indices.append(Tag.index())
+        for idx in changed_indices:
+            if idx.isValid():
+                self.emit(SIGNAL('dataChanged(QModelIndex,QModelIndex)'),
+                        idx, idx)
+
     def clear_state(self):
         for category in self._data.values():
             for tag in category:
                 tag.state = 0
-        self.refresh()
+        self.reset_all_states()
+
+    def find_category(self, name):
+        root = self.invisibleRootItem()
+        for i in range(root.rowCount()):
+            child = root.child(i)
+            if getattr(child, 'category', None) == name:
+                return child
+
+    def find_tag(self, tag, category):
+        for i in range(category.rowCount()):
+            child = category.child(i)
+            if getattr(child, 'tag', None) == tag:
+                return child
+
 
     def reinit(self, *args, **kwargs):
         if self.ignore_next_search == 0:
-            for category in self._data.values():
-                for tag in category:
-                    tag.state = 0
-            self.reset()
+            self.reset_all_states()
         else:
             self.ignore_next_search -= 1
 
+
     def toggle(self, index):
         if index.parent().isValid():
             category = self.row_map[index.parent().row()]

src/calibre/trac/plugins/download.py

@@ -180,7 +180,7 @@ else:
             data = dict(version = version, name='osx',
                 installer_name='OS X universal dmg',
                 title='Download %s for OS X'%(__appname__),
-                compatibility='%s works on OS X Tiger and Leopard, but not Snow Leopard.'%(__appname__,),
+                compatibility='%s works on OS X Tiger and Leopard, but not Snow Leopard (It might work on Snow Leopard if run with Rosetta).'%(__appname__,),
                 path=MOBILEREAD+file, app=__appname__,
                 note=Markup(\
     u'''