View specific format window: If a conversion finishes in the background making a new format available, update the window. Fixes #1363416 [[Feature Request] eBook conversion jobs should automatically update the book's "View specific format" window upon job completion](https://bugs.launchpad.net/calibre/+bug/1363416)

src/calibre/gui2/actions/convert.py

@@ -259,6 +259,7 @@ class ConvertAction(InterfaceAction):
 
             with open(temp_files[-1].name, 'rb') as data:
                 db.add_format(book_id, fmt, data, index_is_id=True)
+            self.gui.book_converted.emit(book_id, fmt)
             self.gui.status_bar.show_message(job.description +
                     (' completed'), 2000)
         finally:

src/calibre/gui2/actions/view.py

@@ -158,8 +158,8 @@ class ViewAction(InterfaceAction):
 
         db = self.gui.library_view.model().db
         rows = [r.row() for r in rows]
-        formats = [db.formats(row) for row in rows]
-        formats = [list(f.upper().split(',')) if f else None for f in formats]
+        book_ids = [db.id(r) for r in rows]
+        formats = [[x.upper() for x in db.new_api.formats(book_id)] for book_id in book_ids]
         all_fmts = set([])
         for x in formats:
             if x:
@@ -171,7 +171,9 @@ class ViewAction(InterfaceAction):
             return
         d = ChooseFormatDialog(self.gui, _('Choose the format to view'),
                 list(sorted(all_fmts)))
+        self.gui.book_converted.connect(d.book_converted)
         if d.exec_() == d.Accepted:
+            formats = [[x.upper() for x in db.new_api.formats(book_id)] for book_id in book_ids]
             fmt = d.format()
             orig_num = len(rows)
             rows = [rows[i] for i in range(len(rows)) if formats[i] and fmt in
@@ -184,6 +186,7 @@ class ViewAction(InterfaceAction):
                             _('Not all the selected books were available in'
                                 ' the %s format. You should convert'
                                 ' them first.')%fmt, show=True)
+        self.gui.book_converted.disconnect(d.book_converted)
 
     def _view_check(self, num, max_=3):
         if num <= max_:
@@ -283,8 +286,7 @@ class ViewAction(InterfaceAction):
         self.persistent_files.append(pt)
         pt.close()
         self.gui.device_manager.view_book(
-                Dispatcher(self.book_downloaded_for_viewing),
-                                        path, pt.name)
+                Dispatcher(self.book_downloaded_for_viewing), path, pt.name)
 
     def _view_books(self, rows):
         if not rows or len(rows) == 0:

src/calibre/gui2/dialogs/choose_format.py

@@ -22,6 +22,13 @@ class ChooseFormatDialog(QDialog, Ui_ChooseFormatDialog):
         self.formats.setCurrentRow(0)
         self._format = None
 
+    def book_converted(self, book_id, fmt):
+        fmt = fmt.upper()
+        if fmt not in self._formats:
+            self._formats.append(fmt)
+            self.formats.addItem(QListWidgetItem(
+                file_icon_provider().icon_from_ext(fmt.lower()), fmt.upper()))
+
     def activated_slot(self, *args):
         self.accept()
 

src/calibre/gui2/ui.py

@@ -142,6 +142,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
     'The main GUI'
 
     proceed_requested = pyqtSignal(object, object)
+    book_converted = pyqtSignal(object, object)
 
     def __init__(self, opts, parent=None, gui_debug=None):
         global _gui