Private/Resolve-FluenceUserBlock.ps1
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<# Copyright (c) 2026, Dan Cunningham. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #> function Resolve-FluenceUserBlock { <# .SYNOPSIS Selects the live user scriptblock when the UI thread shares the caller's runspace, otherwise recreates it from text so it binds to the UI runspace's module session state. .DESCRIPTION On an inline-STA or runspace-sharing foreign host the live block is returned with closures and caller scope intact. On an MTA host the UI thread is a separate module-owned runspace, so the block is recreated from its text (closures and caller-scope references are not available there). .PARAMETER LiveBlock The original scriptblock as transported (a live object; valid only on the caller's runspace). .PARAMETER BlockText The .ToString() text of the block, captured at the caller. .PARAMETER CallerRunspaceId The InstanceId of the runspace that called Show-FluenceWindow. .NOTES Runs on the UI thread inside Set-FluenceWindowContent. #> [CmdletBinding()] [OutputType([scriptblock])] param ( [Parameter()] [scriptblock]$LiveBlock, [Parameter()] [string]$BlockText, [Parameter(Mandatory = $true)] [guid]$CallerRunspaceId ) $current = [System.Management.Automation.Runspaces.Runspace]::DefaultRunspace if ($null -ne $current -and $current.InstanceId -eq $CallerRunspaceId -and $null -ne $LiveBlock) { return $LiveBlock } if ([string]::IsNullOrWhiteSpace($BlockText)) { return $null } return [scriptblock]::Create($BlockText) } |