Add highlight support to thetext backend

- The highlights are saved in the same db we save the bookmarks.
- The highlights can be removed selecting again the same tex, or a subportion of the text
  or puting the cursos inside the highlighted area.

1 files changed, 3 insertions, 0 deletions

diff --git a/epubadapter.py b/epubadapter.py
index 964f915..b03966f 100644
--- a/epubadapter.py
+++ b/epubadapter.py
@@ -46,6 +46,9 @@ class EpubViewer(epubview.EpubView):
     def can_zoom_to_width(self):
         return False
 
+    def can_highlight(self):
+        return False
+
     def connect_zoom_handler(self, handler):
         self._zoom_handler = handler
         self._view_notify_zoom_handler = \