Combine progress states in the tab, taskbar

[zadjii-msft]

Summary of the Pull Request

This PR causes the Terminal to combine taskbar states at the tab and window level, according to the MSDN docs for SetProgressState.

This allows the Terminal's taskbar icon to continue showing progress information, even if you're in a pane/tab that doesn't have progress state. This is helpful for cases where the user may be running a build in one tab, and working on something else in another.

References

• SetProgressState
• Progress mega: [Scenario] Progress Bar Follow-ups #6700

PR Checklist

• Closes Combine pane taskbar states in the taskbar #10090
• I work here
• Tests added/passed
• [n/a] Requires documentation to be updated

Detailed Description of the Pull Request / Additional comments

This also fixes a related bug where transitioning from the "error" or "warning" state directly to the "indeterminate" state would cause the taskbar icon to get stuck in a bad state.

Validation Steps Performed

progress.cmd

@echo off
setlocal enabledelayedexpansion

set _type=3
if (%1) == () (
    set _type=3
) else (
    set _type=%1
)



if (%_type%) == (0) (
    <NUL set /p =�]9;4�
    echo Cleared progress
)
if (%_type%) == (1) (
    <NUL set /p =�]9;4;1;25�
    echo Started progress (normal, 25^)
)
if (%_type%) == (2) (
    <NUL set /p =�]9;4;2;50�
    echo Started progress (error, 50^)
)
if (%_type%) == (3) (
    @rem start indeterminate progress in the taskbar
    @rem this `<NUL set /p =` magic will output the text _without a newline_

    <NUL set /p =�]9;4;3�
    echo Started progress (indeterminate, {omitted})
)
if (%_type%) == (4) (
    <NUL set /p =�]9;4;4;75�
    echo Started progress (warning, 75^)
)

[PankajBhojwani]

Looks great!

[ghost]

Hello @zadjii-msft!

Because this pull request has the AutoMerge label, I will be glad to assist with helping to merge this pull request once all check-in policies pass.

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[DHowett]

gentle nit: we could compute the "max state" one time and store it, here, because this is the listener for all progress state changes (right?). That would make the call in TerminalPage free (it wouldn't need to min_element the group of winrt objects)

[ghost]

🎉Windows Terminal Preview v1.11.2421.0 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes
• Store Download