Backup: Add a modal status popup

This is used to prevent the user closing Gramps during a backup.

Fixes #12846, #12475, #12538

gramps/gui/utils.py

@@ -99,6 +99,61 @@ class CLIDialog:
         pass
     vbox = CLIVbox()
 
+#-------------------------------------------------------------------------
+#
+#  Popup class
+#
+#-------------------------------------------------------------------------
+
+class Popup:
+    """
+    Popup a message for Gramps.
+
+    The Popup is used to display a message
+    This class must be closed when no longer needed.
+
+    """
+
+    def __init__(self, title, message, parent=None):
+        """
+        Specify the title and the message to display.
+        """
+        from gi.repository import Gtk
+        self.__popup = None
+        if has_display():
+            self.__popup = Gtk.Dialog()
+            self.__popup.connect('delete_event', self.do_nothing)
+            self.__popup.set_title(title)
+            self.__popup.set_size_request(400, 100)
+            self.__popup.vbox.set_spacing(10)
+            self.__popup.vbox.set_border_width(24)
+            self.__mesg = Gtk.Label(label=message)
+            self.__mesg.set_use_markup(True)
+            self.__popup.vbox.add(self.__mesg)
+            if not parent:  # if we don't have an explicit parent,
+                            # try to find one
+                for win in Gtk.Window.list_toplevels():
+                    if win.is_active():
+                        parent = win
+                        break
+            # if we still don't have a parent, give up
+            if parent:
+                self.__popup.set_transient_for(parent)
+                self.__popup.set_modal(True)
+            self.__popup.show_all()
+        else: # This class is useful only in gui mode
+            return
+
+    def destroy(self):
+        if self.__popup:
+            self.__popup.destroy()
+
+    def do_nothing(self, widget, value):
+        """
+        Avoid to close the Popup
+        """
+        return True
+
 #-------------------------------------------------------------------------
 #
 #  Progress meter class

gramps/gui/viewmanager.py

@@ -73,7 +73,7 @@ from gramps.gen.plug import REPORT
 from gramps.gen.plug.report._constants import standalone_categories
 from .plug import (PluginWindows, ReportPluginDialog, ToolPluginDialog)
 from .plug.report import report, BookSelector
-from .utils import AvailableUpdates
+from .utils import (AvailableUpdates, Popup)
 from .pluginmanager import GuiPluginManager
 from gramps.gen.relationship import get_relationship_calculator
 from .displaystate import DisplayState, RecentDocsMenu
@@ -1209,6 +1209,10 @@ class ViewManager(CLIManager):
         if(self.dbstate.db.is_open() and
            self.dbstate.db.has_changed > self.prev_has_changed):
             self.prev_has_changed = self.dbstate.db.has_changed
+            message = _("Please, wait before closing gramps")
+            message = '<span size="larger" weight="bold">%s</span>' % message
+            pgr_title = _("Autobackup...")
+            popup = Popup(pgr_title, message, parent=self.window)
             self.uistate.set_busy_cursor(True)
             self.uistate.progress.show()
             self.uistate.push_message(self.dbstate, _("Autobackup..."))
@@ -1218,6 +1222,7 @@ class ViewManager(CLIManager):
                 self.uistate.push_message(self.dbstate,
                                           _("Error saving backup data"))
             self.uistate.set_busy_cursor(False)
+            popup.destroy()
             self.uistate.progress.hide()
 
     def __backup(self):
@@ -1782,6 +1787,10 @@ class QuickBackup(ManagedWindow): # TODO move this class into its own module
             position = self.window.get_position() # crock
             window.hide()
             self.window.move(position[0], position[1])
+            message = _("Please, wait before closing gramps")
+            message = '<span size="larger" weight="bold">%s</span>' % message
+            pgr_title = _("Making backup...")
+            popup = Popup(pgr_title, message, parent=self.window)
             self.uistate.set_busy_cursor(True)
             self.uistate.pulse_progressbar(0)
             self.uistate.progress.show()
@@ -1796,6 +1805,7 @@ class QuickBackup(ManagedWindow): # TODO move this class into its own module
                                    strip_photos=0, compress=1)
                 writer.write(filename)
             self.uistate.set_busy_cursor(False)
+            popup.destroy()
             self.uistate.progress.hide()
             self.uistate.push_message(self.dbstate,
                                       _("Backup saved to '%s'") % filename)