1379931 - Today pane's "Delete event" should be disabled for read-only calendars

Status: NEW

(Calendar :: Calendar Frontend, defect)

Description

[Tristan Miller]

When bringing up the context menu for events in a read-only calendar, the "Delete event" command is disabled in the Calendar tab, but enabled in the Today Pane.  Invoking the "Delete event" command from the Today Pane has no effect -- not even an error message is triggered.  But I think the command should not be enabled in the first place.

Steps to reproduce:
1. Ensure that you have at least one read-only calendar.  (If not, then you can manually mark the calendar as read-only by adjusting its properties.)
2. Open the Today Pane if it is not already open.
3. Right-click on an event from the read-only calendar.

Observed behaviour:
4. A context menu appears, and "Delete Event" is one of the available commands.  Invoking the command has no effect -- not even an error message.

Expected behaviour:
4. A context menu should appear, and "Delete Event" should be listed but disabled.

Comment 1

[[:MakeMyDay]]

Confirming. still an issue in Daily (L6.0).

Comment 2

[Martin Schröder [:mschroeder]]

This is still the case with Thunderbird 78.2.2.

Comment 3

[Magnus Melin [:mkmelin]]

Just came across this. I think enabling/disabling for https://searchfox.org/comm-central/rev/ccb04575dadd4b0f3b3bc1d9286ad4e893d28ee6/calendar/base/content/calendar-context-menus-and-tooltips.inc.xhtml#38 should happen here
https://searchfox.org/comm-central/rev/ccb04575dadd4b0f3b3bc1d9286ad4e893d28ee6/calendar/base/content/today-pane-agenda.js#254