Add window-level progress indicator for Run Tweaks and Undo (#4830)

* feat(tweaks): add window-level progress indicator for Run Tweaks and Undo

* Hide completed tweaks progress on next action

---------

Co-authored-by: Chris Titus <contact@christitus.com>

pester/tweaks.Tests.ps1

@@ -34,6 +34,9 @@ BeforeAll {
     function Set-WinUtilProgressBar {
         param($Label, $Percent)
     }
+    function Set-WinUtilTweaksProgressIndicator {
+        param($Visible, $Label, $Percent)
+    }
     function Write-WinUtilLog {
         param($Message, $Level, $Component)
     }

pester/ui-state.Tests.ps1

@@ -44,8 +44,17 @@ namespace System.Windows.Controls
     . (Join-Path $script:repoRoot "functions\private\Update-WinUtilSelections.ps1")
     . (Join-Path $script:repoRoot "functions\private\Reset-WPFCheckBoxes.ps1")
     . (Join-Path $script:repoRoot "functions\public\Invoke-WPFSelectedCheckboxesUpdate.ps1")
+    . (Join-Path $script:repoRoot "functions\public\Invoke-WPFButton.ps1")
     . (Join-Path $script:repoRoot "functions\public\Invoke-WPFToggleAllCategories.ps1")
 
+    function Set-WinUtilProgressBar {
+        param($Label, $Percent)
+    }
+
+    function Set-WinUtilTweaksProgressIndicator {
+        param($Visible, $Label, $Percent)
+    }
+
     function script:New-WinUtilFakeCheckBox {
         param([bool]$IsChecked = $false)
 
@@ -272,3 +281,38 @@ Describe "Invoke-WPFToggleAllCategories" {
         }
     }
 }
+
+Describe "Invoke-WPFButton progress cleanup" {
+    BeforeEach {
+        New-WinUtilUiStateTestContext
+        Mock Set-WinUtilProgressBar { }
+        Mock Set-WinUtilTweaksProgressIndicator { }
+    }
+
+    AfterEach {
+        Remove-Variable -Name sync -Scope Script -ErrorAction SilentlyContinue
+        Remove-Variable -Name sync -Scope Global -ErrorAction SilentlyContinue
+    }
+
+    It "clears completed progress on the next idle button click" {
+        $script:sync.ProcessRunning = $false
+
+        Invoke-WPFButton -Button "WPFNoOp"
+
+        Should -Invoke Set-WinUtilProgressBar -Times 1 -Exactly -ParameterFilter {
+            $Label -eq "" -and $Percent -eq 0
+        }
+        Should -Invoke Set-WinUtilTweaksProgressIndicator -Times 1 -Exactly -ParameterFilter {
+            $Visible -eq $false
+        }
+    }
+
+    It "leaves progress visible while a process is running" {
+        $script:sync.ProcessRunning = $true
+
+        Invoke-WPFButton -Button "WPFNoOp"
+
+        Should -Not -Invoke Set-WinUtilProgressBar
+        Should -Not -Invoke Set-WinUtilTweaksProgressIndicator
+    }
+}