ContinuousAutomation Part II PowerShell GUIs

readme.md

Content for this blog post, also available here : https://github.com/1RedOne/BlogPosts/tree/master/ContinuousAutomation/Post2

FoxDeploy_NewGUI.ps1

[void][System.Reflection.Assembly]::LoadWithPartialName('presentationframework')

$xamlPath = "$($PSScriptRoot)\$((split-path $PSCommandPath -Leaf ).Split(".")[0]).xaml"
if (-not(Test-Path $xamlPath)){
    throw "Ensure that $xamlPath is present within $PSScriptRoot"
}
$inputXML = Get-Content $xamlPath
$inputXML = $inputXML -replace 'mc:Ignorable="d"','' -replace "x:N",'N' -replace '^<Win.*', '<Window'
[xml]$XAML = $inputXML
  
$reader=(New-Object System.Xml.XmlNodeReader $xaml) 
  try{
    $Form=[Windows.Markup.XamlReader]::Load( $reader )
    }
catch [System.Management.Automation.MethodInvocationException] {
    Write-Warning "We ran into a problem with the XAML code.  Check the syntax for this control..."
    write-host $error[0].Exception.Message -ForegroundColor Red
    if ($error[0].Exception.Message -like "*button*"){
        write-warning "Ensure your &lt;button in the `$inputXML does NOT have a Click=ButtonClick property.  PS can't handle this`n`n`n`n"}
}
catch{
    Write-Host "Unable to load Windows.Markup.XamlReader. Double-check syntax and ensure .net is installed."
}
  
#===========================================================================
# Store Form Objects In PowerShell
#===========================================================================
  
$xaml.SelectNodes("//*[@Name]") | %{Set-Variable -Name "WPF$($_.Name)" -Value $Form.FindName($_.Name)}
  
Function Get-FormVariables{
if ($global:ReadmeDisplay -ne $true){Write-host "If you need to reference this display again, run Get-FormVariables" -ForegroundColor Yellow;$global:ReadmeDisplay=$true}
write-host "Found the following interactable elements from our form" -ForegroundColor Cyan
get-variable WPF*
}
  
Get-FormVariables

function loadListView(){
    $global:deviceList = new-object -TypeName System.Collections.ArrayList    
    $devices = import-csv "$PSScriptRoot\devices.csv" | Sort-Object Processed
    ForEach($device in $devices){        
        $global:deviceList.Add($device)
    }
    $WPFdevice_listView.ItemsSource = $global:deviceList
}

function cancelButton(){
    $WPFok.IsEnabled = $false
    $wpfdeviceTextbox.Text = $null 
    $wpflabelCounter.Text="Reset"
    }

$wpfdeviceTextbox.Add_TextChanged({
    if ($wpfdeviceTextbox.Text.Length -le 5){
        return 
    }
    $WPFok.IsEnabled = $true 
    $deviceTextbox = $wpfdeviceTextbox.Text.Split(',').Split([System.Environment]::NewLine).Where({$_.Length -ge 3})
    $count = $deviceTextbox.Count
    $wpflabelCounter.Text=$count
})

$WPFCancel.Add_Click({
    cancelButton    
})


$WPFok.Add_Click({
    $deviceTextbox = $wpfdeviceTextbox.Text.Split(',').Split([System.Environment]::NewLine).Where({$_.Length -ge 3})    
    ForEach($item in $deviceTextbox){
        $global:deviceList.Add([pscustomObject]@{HostName=$item})
    }    
    set-content "$PSScriptRoot\devices.csv" -Value $($deviceList | ConvertTo-csv -NoTypeInformation)
    cancelButton
    loadListView
})

loadListView
$Form.ShowDialog() | out-null

FoxDeploy_NewGUI.xaml

<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp2"
        mc:Ignorable="d"
        Title="MainWindow" Height="1000" Width="800">
    <Grid Background="#FF0B4A80">
        <Grid.RowDefinitions>
            <RowDefinition Height="1*"/>
            <RowDefinition Height="6*"/>
            <RowDefinition Height="10*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="3*"/>
            <ColumnDefinition Width="1*"/>
        </Grid.ColumnDefinitions>
        <StackPanel Grid.Row="0" Grid.ColumnSpan="2">
            <TextBlock FontSize="22" Foreground="#FFFFF7F7" Grid.ColumnSpan="2">FoxDeploy Device Scheduler</TextBlock>
            <Separator />
        </StackPanel>
        <StackPanel Grid.Row="1" Grid.Column="0">
            <TextBlock FontSize="14" Foreground="#FFFFF7F7">Paste a list of devices into the textbox below to add them to the database to be processed!</TextBlock>
            <TextBox x:Name="deviceTextbox" Width="450" Height="240" HorizontalAlignment="Left"  TextWrapping="Wrap"  AcceptsReturn="True"></TextBox>
            <TextBlock FontSize="18" Foreground="#FFFFF7F7">New Device Count <TextBlock x:Name="labelCounter" Foreground="Yellow" FontSize="22" HorizontalAlignment="Center" VerticalAlignment="Bottom">Waiting...</TextBlock></TextBlock>
            
        </StackPanel>
        <StackPanel Grid.Row="1" Grid.Column="1">
            <Button x:Name="ok" Content="OK" Width="100" IsEnabled="False"/>
            <Button x:Name="Cancel" Content="Cancel" Width="100"/>
        </StackPanel>
        <StackPanel Grid.Row="2">
            <TextBlock FontSize="20" Foreground="#FFFFF7F7">Scheduled Devices</TextBlock>
            <Separator />
            <TextBlock FontSize="14" Foreground="#FFFFF7F7">The devices below have already been scheduled!</TextBlock>
            <ListView x:Name="device_listView" MaxWidth="800" HorizontalAlignment="Left">
                <ListView.View>
                    <GridView>
                        <GridViewColumn Header="HostName"  DisplayMemberBinding ="{Binding 'HostName'}" Width="120"/>
                        <GridViewColumn Header="Processed" DisplayMemberBinding ="{Binding 'Processed'}" Width="80"/>
                        <GridViewColumn Header="Processed Date" DisplayMemberBinding ="{Binding 'ProcessedDate'}" Width="180"/>
                    </GridView>
                </ListView.View>
            </ListView>
        </StackPanel>
    </Grid>
</Window>