Gui-Form-Test

Add-Type -AssemblyName System.Windows.Forms

# Inspired by https://pastebin.com/UsftjYPK this is the outline for a status bar window for more complex powershell scripts.

# Create a custom PowerShell object for the form
$formObject = [PSCustomObject]@{
    Form = $null
    Label = $null
    ProgressBar = $null
    UpdateProgress = {
        param($progress)
        if ($this.ProgressBar -ne $null) {
            $this.ProgressBar.Value = $progress
        }
    }
    UpdateLabel = {
        param($text)
        if ($this.Label -ne $null) {
            $this.Label.Text = $text
        }
    }
}

# Method to initialize the form
function Initialize-Form {
    $formObject.Form = New-Object System.Windows.Forms.Form
    $formObject.Form.Text = 'Progress Window'
    $formObject.Form.Size = New-Object System.Drawing.Size(300,200)
    $formObject.Form.StartPosition = [System.Windows.Forms.FormStartPosition]::CenterScreen
    $formObject.Form.TopMost = $true

    $formObject.Label = New-Object System.Windows.Forms.Label
    $formObject.Label.Text = 'Starting...'
    $formObject.Label.AutoSize = $true
    $formObject.Label.Location = New-Object System.Drawing.Point(10,20)
    $formObject.Form.Controls.Add($formObject.Label)

    $formObject.ProgressBar = New-Object System.Windows.Forms.ProgressBar
    $formObject.ProgressBar.Style = "Continuous"
    $formObject.ProgressBar.Minimum = 0
    $formObject.ProgressBar.Maximum = 100
    $formObject.ProgressBar.Location = New-Object System.Drawing.Point(10,50)
    $formObject.ProgressBar.Size = New-Object System.Drawing.Size(260,23)
    $formObject.Form.Controls.Add($formObject.ProgressBar)

    $formObject.Form.Show()
}

# Method to dispose of the form
function Dispose-Form {
    if ($formObject.Form -ne $null) {
        $formObject.Form.Close()
        $formObject.Form.Dispose()
    }
}

# Initialize the form
Initialize-Form

# Example usage: Simulate some work and update the UI
for ($i = 0; $i -le 100; $i += 10) {
    Start-Sleep -Seconds 1
    # Instead of using Invoke, define helper functions for better scope handling
    $updateLabel = { param($text) $formObject.Label.Text = $text }
    $updateProgress = { param($progress) $formObject.ProgressBar.Value = $progress }

    & $updateLabel -text "Processing: $i%"
    & $updateProgress -progress $i
    [System.Windows.Forms.Application]::DoEvents()
}

# Cleanup
Dispose-Form