winutil/functions/private/Reset-WPFCheckBoxes.ps1

function Reset-WPFCheckBoxes {
    <#

    .SYNOPSIS
        Set winutil checkboxs to match $sync.selected values.
        Should only need to be run if $sync.selected updated outside of UI (i.e. presets or import)

    .PARAMETER doToggles
        Whether or not to set UI toggles. WARNING: they will trigger if altered

    .PARAMETER checkboxfilterpattern
        The Pattern to use when filtering through CheckBoxes, defaults to "**"
        Used to make reset blazingly fast.
    #>

    param (
        [Parameter(position=0)]
        [bool]$doToggles = $false,

        [Parameter(position=1)]
        [string]$checkboxfilterpattern = "**"
    )

    $CheckBoxesToCheck = $sync.selectedApps + $sync.selectedTweaks + $sync.selectedFeatures
    $CheckBoxes = ($sync.GetEnumerator()).where{ $_.Value -is [System.Windows.Controls.CheckBox] -and $_.Name -notlike "WPFToggle*" -and $_.Name -like "$checkboxfilterpattern"}
    Write-Debug "Getting checkboxes to set, number of checkboxes: $($CheckBoxes.Count)"

    if ($CheckBoxesToCheck -ne "") {
        $debugMsg = "CheckBoxes to Check are: "
        $CheckBoxesToCheck | ForEach-Object { $debugMsg += "$_, " }
        $debugMsg = $debugMsg -replace (',\s*$', '')
        Write-Debug "$debugMsg"
    }

    foreach ($CheckBox in $CheckBoxes) {
        $checkboxName = $CheckBox.Key
        if (-not $CheckBoxesToCheck) {
            $sync.$checkBoxName.IsChecked = $false
            continue
        }

        # Check if the checkbox name exists in the flattened JSON hashtable
        if ($CheckBoxesToCheck -contains $checkboxName) {
            # If it exists, set IsChecked to true
            $sync.$checkboxName.IsChecked = $true
            Write-Debug "$checkboxName is checked"
        } else {
            # If it doesn't exist, set IsChecked to false
            $sync.$checkboxName.IsChecked = $false
            Write-Debug "$checkboxName is not checked"
        }
    }

    # Update Installs tab UI values
    $count = $sync.SelectedApps.Count
    $sync.WPFselectedAppsButton.Content = "Selected Apps: $count"
    # On every change, remove all entries inside the Popup Menu. This is done, so we can keep the alphabetical order even if elements are selected in a random way
    $sync.selectedAppsstackPanel.Children.Clear()
    $sync.selectedApps | Foreach-Object { Add-SelectedAppsMenuItem -name $($sync.configs.applicationsHashtable.$_.Content) -key $_ }

    if($doToggles) {
        # Restore toggle switch states from imported config.
        # Only act on toggles that are explicitly listed in the import — toggles absent
        # from the export file were not part of the saved config and should keep whatever
        # state the live system already has (set during UI initialisation via Get-WinUtilToggleStatus).
        $importedToggles = $sync.selectedToggles
        $allToggles = $sync.GetEnumerator() | Where-Object { $_.Key -like "WPFToggle*" -and $_.Value -is [System.Windows.Controls.CheckBox] }
        foreach ($toggle in $allToggles) {
            if ($importedToggles -contains $toggle.Key) {
                $sync[$toggle.Key].IsChecked = $true
                Write-Debug "Restoring toggle: $($toggle.Key) = checked"
            }
            # Toggles not present in the import are intentionally left untouched;
            # their current UI state already reflects the real system state.
        }
    }
}