winutil/functions/public/Invoke-WPFToggleAllCategories.ps1

function Invoke-WPFToggleAllCategories {
    <#
        .SYNOPSIS
            Expands or collapses all categories in the Install tab

        .PARAMETER Action
            The action to perform: "Expand" or "Collapse"

        .DESCRIPTION
            This function iterates through all category containers in the Install tab
            and expands or collapses their WrapPanels while updating the toggle button labels
    #>

    param(
        [Parameter(Mandatory=$true)]
        [ValidateSet("Expand", "Collapse")]
        [string]$Action
    )

    try {
        if ($null -eq $sync.ItemsControl) {
            Write-Warning "ItemsControl not initialized"
            return
        }

        $targetVisibility = if ($Action -eq "Expand") { [Windows.Visibility]::Visible } else { [Windows.Visibility]::Collapsed }
        $targetPrefix = if ($Action -eq "Expand") { "-" } else { "+" }
        $sourcePrefix = if ($Action -eq "Expand") { "+" } else { "-" }

        # Iterate through all items in the ItemsControl
        $sync.ItemsControl.Items | ForEach-Object {
            $categoryContainer = $_

            # Check if this is a category container (StackPanel with children)
            if ($categoryContainer -is [System.Windows.Controls.StackPanel] -and $categoryContainer.Children.Count -ge 2) {
                # Get the WrapPanel (second child)
                $wrapPanel = $categoryContainer.Children[1]
                $wrapPanel.Visibility = $targetVisibility

                # Update the label to show the correct state
                $categoryLabel = $categoryContainer.Children[0]
                if ($categoryLabel.Content -like "$sourcePrefix*") {
                    $categoryLabel.Content = $categoryLabel.Content -replace "^$sourcePrefix ", "$targetPrefix "
                }
            }
        }
    }
    catch {
        Write-Error "Error toggling categories: $_"
    }
}