Allow admins to lock topics.

[tommyip]

From this discussion

This feature should allow admins to lock a topic to prevent further discussion.

[graszka22]

@zulipbot claim

[zulipbot]

Hello @zulip/server-misc members, this issue was labeled with the area: topics label, so you may want to check it out!

[graszka22]

I have implemented most of the functionality, but I have a question about how we should indicate that the topic is locked in the UI. My propositions are:

• a message automatically sent to the topic like this (note that the message looks like it's sent by the admin - I think creating a bot just for this purpose is too much):

• a small lock next to the topic name (perhaps it's slightly off, it's just for showing a concept :) )
  

• when the topic is locked and the user clicks a message to reply in this topic the compose box just doesn't appear

• when user uses 'c' shortcut and specify a locked topic he gets the following error:
  

[tommyip]

I think we need multiple indications:

• Stream list: The lock icon is used for invite-only streams already. Perhaps we could grey out the topic name and/or append a (locked) text next to it?

• Message view

a message automatically sent to the topic like this (note that the message looks like it's sent by the admin - I think creating a bot just for this purpose is too much):

I think a message in the divider would do the job

• Compose box: When the user attempt to open the compose box we should show a popup or warning (the one for UI error message). Just not appearing without any response isn't very good UX.

[zulipbot]

Hello @graszka22, you claimed this issue to work on it, but this issue and any referenced pull requests haven't been updated for 10 days. Are you still working on this issue?

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[graszka22]

@zulipbot bump

[zulipbot]

Hello @graszka22, you have been unassigned from this issue because you have not updated this issue or any referenced pull requests for over 14 days.

You can reclaim this issue or claim any other issue by commenting @zulipbot claim on that issue.

Thanks for your contributions, and hope to see you again soon!

[vanclute]

As a community admin/mod, I would very much like the ability to lock topics. I would also love to be able to selectively assign the power to lock/unlock to moderator roles. Don't always want all mods to have it, but the more senior/trusted ones, yes.

[andreasoc]

i agree with this features!