Display connection state in tab & add tab context menu entry for restarting connection

[xyang-zh]

Environment

CPU AMD Ryzen 7 3700X 8-Core Processor 3.60 GHz
Memory 32.0 GB
OS 64-bit

Description of the new feature/enhancement

1、Add a status indicator to the tab indicates connection status
2、Add connect and disconnect buttons to the tab's Pop-up list(or somewhere)

Describe

The two functions above are closely linked and I have written them together
1、I want to disconnect the terminal from the background program without closing the terminal page (I need to see the contents,)，and reconnect if necessary，more often than not, I prefer to reopen the current terminal page rather than closing it and creating another

Add connect/disconnect buttons to above list(or somewhere)

2、Let's use an elegant dynamic icon to indicate the current connection status. Every time the connection is accidentally disconnected, the error report on the first line is of little use to me except for the last line which tells me to enter to reconnect (it's a strange feeling that the connection is now disconnected and the content is printed in the terminal...”)
like this:

Proposed technical implementation details (optional)

It would be great to have both functions(connect/disconnect button) in one button

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maintainer edit space:

### Tasks
* [ ] When a connection is `Closed`, set an indicator in the tab itself. This could be like the zoom one we have currently. 
* [ ] When the active pane in a tab's connection state is `Closed`, we could add a "Restart connection" action to the tab context menu (ala #14549)

[carlos-zamora]

Hi @Window-YANG. We're having a bit of trouble understanding how detach works and how it impacts the tab hosting that application. Could you please elaborate on that a bit?

As for the "restarting" aspect of this request, does #14060 sound like what you're looking for?

[xyang-zh]

Hi @Window-YANG. We're having a bit of trouble understanding how detach works and how it impacts the tab hosting that application. Could you please elaborate on that a bit?

As for the "restarting" aspect of this request, does #14060 sound like what you're looking for?
Problem 1: restart。Refer to secureCRT.

Restart is 1409, but there are some shortcomings, 1409 confuses me: I can't find any place to actively disconnect (unless I close the terminal or enter a command in the terminal to exit the background program), so it's better to design a button ，no matter what the background program is, I can easily disconnect and reconnect with one click in the terminal

Proble 2: status
As for technical details like how to disconnect, I can't give much advice (one possible way: close the background program and recreate a new one?)

[zadjii-msft]

Okay, I think I can see the cross-tabs here. There's a couple things we can do here:

• When a connection is Closed, set an indicator in the tab itself. This could be like the zoom one we have currently.
• When the active pane in a tab's connection state is Closed, we could add a "Restart connection" action to the tab context menu (ala Add an action for immediately restarting a connection #14549) I MEAN, Add an action for immediately restarting a connection #15241

I'll xlink with #6700 which has some similar thoughts in it.

Thanks for the suggestion!