## Summary of the Pull Request
This adds a new action, `clearBuffer`. It accepts 3 values for the `clear` type:
* `"clear": "screen"`: Clear the terminal viewport content. Leaves the scrollback untouched. Moves the cursor row to the top of the viewport (unmodified).
* `"clear": "scrollback"`: Clear the scrollback. Leaves the viewport untouched.
* `"clear": "all"`: (**default**) Clear the scrollback and the visible viewport. Moves the cursor row to the top of the viewport (unmodified).
"Clear Buffer" has also been added to `defaults.json`.
## References
* From microsoft/vscode#75141 originally
## PR Checklist
* [x] Closes#1193
* [x] Closes#1882
* [x] I work here
* [x] Tests added/passed
* [ ] Requires documentation to be updated
## Detailed Description of the Pull Request / Additional comments
This is a bit tricky, because we need to plumb it all the way through conpty to clear the buffer. If we don't, then conpty will immediately just redraw the screen. So this sends a signal to the attached conpty, and then waits for conpty to draw the updated, cleared, screen back to us.
## Validation Steps Performed
* works for each of the three clear types as expected
* tests pass.
* works even with `ping -t 8.8.8.8` as you'd hope.
#### ⚠️ targets #10051
## Summary of the Pull Request
This PR does one big, primary thing. It removes all the constructors from any TerminalConnections, and changes them to use an `Initialize` method that accepts a `ValueSet` of properties.
Why?
For the upcoming window/content process work, we'll need the content process to be able to initialize the connection _in the content process_. However, the window process will be the one that knows what type of connection to make. Enter `ConnectionInformation`. This class will let us specify the class name of the type we want to create, and a set of settings to use when initializing that connection.
**IMPORTANT**: As a part of this, the constructor for a connection must have 0 arguments. `RoActivateInstance` lets you just conjure a WinRT type just by class name, but that class must have a 0 arg ctor. Hence the need for `Initialize`, to actually pass the settings.
We're using a `ValueSet` here because it's basically a json blob, with more steps. In the future, when extension authors want to have custom connections, we can always deserialize the json into a `ValueSet`, pass it to their connection's `Initialize`, and let then get what they need out of it.
## References
* Tear-out: #1256
* Megathread: #5000
* Project: https://github.com/microsoft/terminal/projects/5
## PR Checklist
* [x] Closes https://github.com/microsoft/terminal/projects/5#card-50760298
* [x] I work here
* [n/a] Tests added/passed
* [n/a] Requires documentation to be updated
## Detailed Description of the Pull Request / Additional comments
`ConnectionInformation` was included as a part of this PR, to demonstrate how this will eventually be used. `ConnectionInformation` is not _currently_ used.
## Validation Steps Performed
It still builds and runs.
- Implements the default application behavior and handoff mechanisms
between console and terminal. The inbox portion is done already. This
adds the ability for our OpenConsole.exe to accept the incoming server
connection from the Windows OS, stand up a PTY session, start the
Windows Terminal as a listener for an incoming connection, and then
send it the incoming PTY connection for it to launch a tab.
- The tab is launched with default settings at the moment.
- You must configure the default application using the `conhost.exe`
propsheet or with the registry keys. Finishing the setting inside
Windows Terminal will be a todo after this is complete. The OS
Settings panel work to surface this setting is a dependency delivered
by another team and you will not see it here.
## Validation Steps Performed
- [x] Manual adjust of registry keys to the delegation conhost/terminal
behavior
- [x] Adjustment of the delegation options with the propsheet
- [x] Launching things from the run box manually and watching them show
in Terminal
- [x] Launching things from shortcuts and watching them show in the
Terminal
Documentation on how it works will be a TODO post completion in #9462
References #7414 - Default Terminal spec
Closes#492
This commit adds a `WT_PROFILE_ID` environment variable, which contains
the guid of the active profile.
It also teaches ConptyConnection to take an environment map on creation.
We had to do a little manual jiggery with the WSLENV environment
variable as passed by the creator.
* [x] CLA signed
* [ ] Tests added/passed
* [ ] Requires documentation to be updated
* [x] I've discussed this with core contributors already.
Ran terminal, validated vars and translated paths under windows and WSL.
References #4566 (this PR originally introduced WT_SETTINGS/DEFAULTS)
Closes#3589
This commit deletes ConhostConnection and replaces it with
ConptyConnection. The ConptyConnection uses CreatePseudoConsole and
depends on winconpty to override the one from kernel32.
* winconpty must be packageable, so I've added GetPackagingOutputs.
* To validate this, I added conpty.dll to the MSIX regression script.
* I moved the code from conpty-universal that deals with environment
strings into the types library.
This puts us in a way better place to implement #2563, as we can now
separately detect a failure to launch a pseudoconsole, a failure to
CreateProcess, and an unexpected termination of the launched process.
Fixes#1131.
