TableUI.psm1
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[System.ConsoleColor]$DefaultBackgroundColor = $Host.UI.RawUI.BackgroundColor # Example of a custom script block $DummyScriptBlock = { param($currentSelections, $selectedIndex) Clear-Host Write-Output "The currenntly selected index is: $selectedIndex" Write-Output "`n[Press ENTER to return.]" [Console]::CursorVisible = $false $cursorPos = $host.UI.RawUI.CursorPosition while ($host.ui.RawUI.ReadKey().VirtualKeyCode -ne [ConsoleKey]::Enter) { $host.UI.RawUI.CursorPosition = $cursorPos [Console]::CursorVisible = $false } } <# .DESCRIPTION Shows a user-interface based on an array of objects. This interface allows a user to select zero or more items from this selection. The provided reference is updated with an array of booleans indicating which items in the array were selected. #> function Show-TableUI { [CmdletBinding()] param ( # The array of objects that will be presented in the table UI. [Parameter(Mandatory)] [PSCustomObject[]]$Table, # An array of booleans indicating which items were selected. # IMPORTANT: This array will be set to $null if the user aborts the selection. [Parameter(Mandatory)] [ref]$Selections, # The title of the table, indicating what action will be performed after making the selections. [Parameter()] [string]$Title = 'Make Selections', # This is the member that will be displayed in the selection list. If not specified, the first NoteProperty member will be used. [Parameter()] [string]$DefaultMemberToShow, # These are the members to show when an item is currenlty selected. Order determines arrangement in UI. [Parameter()] [string[]]$SelectedItemMembersToShow = @("Name","Id","Version","Available"), # The decription of what the ENTER key does. Should be filled to 60-characters. [Parameter()] [string]$EnterKeyDescription = "Press ENTER to show selection details. ", # The script to execute whenn the ENNTER key is pressed. After completion, the screen will be redrawn by the TableUI. [Parameter()] [scriptblock]$EnterKeyScript = $DummyScriptBlock ) <# .DESCRIPTION Restore the UI's background color to the state it was in when the script was called. #> function Restore-BackgroundColor { $Host.UI.RawUI.BackgroundColor = $script:DefaultBackgroundColor } <# .DESCRIPTION Set the UI background color. #> function Set-BackgroundColor { param ( # The background color to apply. [System.ConsoleColor]$BackgroundColor ) $Host.UI.RawUI.BackgroundColor = $BackgroundColor } <# .DESCRIPTION Write to standard output with the specified foreground color. #> function Write-ColorOutput { param ( # The foreground color to apply. [System.ConsoleColor]$ForegroundColor ) # Save the current color $fc = $host.UI.RawUI.ForegroundColor # Set the new color $host.UI.RawUI.ForegroundColor = $ForegroundColor if ($args) { Write-Output $args } else { $input | Write-Output } # Restore the original color $host.UI.RawUI.ForegroundColor = $fc } <# .DESCRIPTION Write to standard output with DarkGray background color. #> function Write-Highlighted { param ( # The message to display. [string]$Message ) Set-BackgroundColor Blue Write-ColorOutput White $Message Restore-BackgroundColor } <# .DESCRIPTION Show the selectable items. #> function Show-SelectionMenu { param ( [string]$Title, [string[]]$SelectionItems, [int]$SelectionIndex, [bool[]]$Selections ) Clear-Host Write-Output "▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬" Write-Output "$Title" Write-Output "▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬" for ($i = 0; $i -lt $SelectionItems.Count; $i++) { $selectedChar = " " if ($Selections[$i]) { $selectedChar = "*" } $lineContent = "[$selectedChar]: $($SelectionItems[$i])" if ($i -eq $SelectionIndex) { Write-Highlighted $lineContent } else { Write-Output $lineContent } } } <# .DESCRIPTION Show the currently selected item. #> function Show-SelectedItem { param ( [PSCustomObject[]]$SelectionItems, [int]$SelectionIndex, [string[]]$MembersToShow ) Write-Output "▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬" Write-Output "Current Selection ($($selectionIndex+1) of $($SelectionItems.Count))" Write-Output "▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬" if ($null -eq $MembersToShow) { $MembersToShow = $SelectionItems[$SelectionIndex] | Get-Member -MemberType NoteProperty | ForEach-Object { $_.$DefaultMemberToShow } } $SelectionItems[$SelectionIndex] | Format-List -Property $MembersToShow } <# .DESCRIPTION Show the UI control information. #> function Show-SelectionMenuControls { param ( # Decription should be filled to 60-characters. [string]$EnterKeyDescription = "Press ENTER to show selection details. " ) Write-Output "▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬" Set-BackgroundColor DarkGray Write-ColorOutput White "Press (PAGE) UP or (PAGE) DOWN to navigate selection. " Write-ColorOutput White "Press SPACE to toggle selection. " Write-ColorOutput White "Press 'A' to select all. " Write-ColorOutput White "Press 'N' to select none. " Write-ColorOutput White $EnterKeyDescription Write-ColorOutput White "Press 'C' to finish selections and continue operation. " Write-ColorOutput White "Press ESC or 'Q' to quit now and cancel operation. " Restore-BackgroundColor } if ([string]::IsNullOrWhiteSpace($DefaultMemberToShow)) { $DefaultMemberToShow = ($Table[0] | Get-Member -MemberType NoteProperty)[0].Name } [char]$currentKey = [char]0 [char]$selectAll ='a' [char]$selectNone ='n' [char]$continue = 'c' [char]$quitKey = 'q' $Selections.Value = @($Table) | ForEach-Object { $false } [int]$selectionIndex = 0 [int]$windowStartIndex = 0 while ($currentKey -ne $continue) { [int]$numStandardMenuLines = 22 # Count is based on 'Show-' calls below [int]$windowedSpan = $Host.UI.RawUI.WindowSize.Height - $numStandardMenuLines if ($windowedSpan -le 0) { $windowedSpan = 1 } $windowedSelectionItems = @($Table.$DefaultMemberToShow)[$windowStartIndex..($windowStartIndex+$windowedSpan-1)] $windowedSelectionIndex = $selectionIndex - $windowStartIndex $windowedSelections = @($Selections.Value)[$windowStartIndex..($windowStartIndex+$windowedSpan-1)] $numItemsToUpgrade = 0 $Selections.Value | ForEach-Object { if ($_ -eq $true) { $numItemsToUpgrade++ } } $selectionMenuTitle = "$Title (Selected $($numItemsToUpgrade) of $($Table.Count))" [Console]::CursorVisible = $false Show-SelectionMenu -Title $selectionMenuTitle -SelectionItems $windowedSelectionItems -SelectionIndex $windowedSelectionIndex -Selections $windowedSelections Show-SelectionMenuControls -EnterKeyDescription $EnterKeyDescription Show-SelectedItem -SelectionItems $Table -SelectionIndex $selectionIndex -MembersToShow $SelectedItemMembersToShow $key = $host.ui.RawUI.ReadKey() if ($key.ControlKeyState.HasFlag([System.Management.Automation.Host.ControlKeyStates]::LeftCtrlPressed) -or $key.ControlKeyState.HasFlag([System.Management.Automation.Host.ControlKeyStates]::RightCtrlPressed)) { continue } $currentKey = [char]$key.VirtualKeyCode switch ($currentKey) { # Navigate up { $_ -eq [ConsoleKey]::UpArrow } { if ($selectionIndex -gt 0) { $selectionIndex-- } } # Navigate down { $_ -eq [ConsoleKey]::DownArrow } { if ($selectionIndex -lt $Table.Count - 1) { $selectionIndex++ } } # Navigate up by one page { $_ -eq [ConsoleKey]::PageUp } { if ($selectionIndex - $windowedSpan -ge 0) { $selectionIndex -= $windowedSpan } else { $selectionIndex = 0 } } # Navigate down by one page { $_ -eq [ConsoleKey]::PageDown } { if ($selectionIndex + $windowedSpan -le $Table.Count - 1) { $selectionIndex += $windowedSpan } else { $selectionIndex = $Table.Count - 1 } } # Toggle selected item { $_ -eq [ConsoleKey]::Spacebar } { if ($Selections.Value.Count -gt 1) { $Selections.Value[$selectionIndex] = -not $Selections.Value[$selectionIndex] } else { $Selections.Value = -not $Selections.Value } } # Select all items $selectAll { $Selections.Value = $Selections.Value | ForEach-Object { $true } } # Deselect all items $selectNone { $Selections.Value = $Selections.Value | ForEach-Object { $false } } # Execute the ENTER script block for the selected item { $_ -eq [ConsoleKey]::Enter } { Invoke-Command -ScriptBlock $EnterKeyScript -ArgumentList @(@($Selections.Value), $selectionIndex) } # Abort operation { ($_ -eq [ConsoleKey]::Escape) -or ($_ -eq $quitKey) } { Write-Output "`nAborted." $currentKey = $continue $Selections.Value = $null } } if ($selectionIndex -lt $windowStartIndex) { $windowStartIndex = $selectionIndex } elseif ($selectionIndex - $windowStartIndex -ge $windowedSpan) { $windowStartIndex = $selectionIndex - $windowedSpan + 1 } } } |