Add an action to show the notes browser

src/calibre/customize/builtins.py

@@ -855,6 +855,12 @@ class ActionBrowseAnnotations(InterfaceActionBase):
     description = _('Browse highlights and bookmarks from all books in the library')
 
 
+class ActionBrowseNotes(InterfaceActionBase):
+    name = 'Browse Notes'
+    actual_plugin = 'calibre.gui2.actions.browse_notes:BrowseNotesAction'
+    description = _('Browse notes for authors, tags, etc. in the library')
+
+
 class ActionFullTextSearch(InterfaceActionBase):
     name = 'Full Text Search'
     actual_plugin = 'calibre.gui2.actions.fts:FullTextSearchAction'
@@ -1133,7 +1139,7 @@ plugins += [ActionAdd, ActionFetchAnnotations, ActionGenerateCatalog,
         ActionMarkBooks, ActionEmbed, ActionTemplateTester, ActionTagMapper, ActionAuthorMapper,
         ActionVirtualLibrary, ActionBrowseAnnotations, ActionTemplateFunctions, ActionAutoscrollBooks,
         ActionFullTextSearch, ActionManageCategories, ActionBooklistContextMenu, ActionSavedSearches,
-        ActionLayoutActions]
+        ActionLayoutActions, ActionBrowseNotes,]
 
 # }}}
 

src/calibre/gui2/actions/browse_notes.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# License: GPL v3 Copyright: 2020, Kovid Goyal <kovid at kovidgoyal.net>
+
+
+from calibre.gui2.actions import InterfaceAction
+
+
+class BrowseNotesAction(InterfaceAction):
+
+    name = 'Browse Notes'
+    action_spec = (_('Browse notes'), 'notes.png',
+                   _('Browse notes for authors, tags, etc. in the library'), _('Ctrl+Shift+N'))
+    dont_add_to = frozenset(('context-menu-device',))
+    action_type = 'current'
+
+    def genesis(self):
+        self.d = None
+        self.qaction.triggered.connect(self.show_browser)
+
+    def show_browser(self):
+        if self.d is not None and self.d.isVisible():
+            self.d.raise_()
+            self.d.activateWindow()
+        else:
+            from calibre.gui2.library.notes import NotesBrowser
+            self.d = NotesBrowser(self.gui)
+            self.d.show()