Private/Show-FluenceWindowCore.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 Show-FluenceWindowCore { <# .SYNOPSIS Ensures the WPF Application, builds and populates the window, shows it modally, and returns the stashed result. .DESCRIPTION Seeds the three theme slots and accent through Initialize-FluenceApplication, builds the window and its content via Set-FluenceWindowContent (rethrowing any user-block error), optionally watches OS theme changes for the window's lifetime, and shows the window with ShowDialog. The value stashed on the window's Tag (for example by Close-FluenceWindow) is returned wrapped in a hashtable so the caller's collection-unwrap is unambiguous. .PARAMETER Spec The normalized window specification hashtable from Show-FluenceWindow. .OUTPUTS System.Collections.Hashtable .NOTES Must run on a UI (STA) thread; call it through Invoke-OnFluenceUi. Blocks until the window closes. #> [CmdletBinding()] [OutputType([hashtable])] param ( [Parameter(Mandatory = $true)] [hashtable]$Spec ) Initialize-FluenceApplication -Theme $Spec.Theme -Backdrop $Spec.Backdrop -Accent $Spec.Accent $state = @{ Error = $null } $window = Set-FluenceWindowContent -Spec $Spec -State $state try { if ($null -ne $state.Error) { throw $state.Error } if ($Spec.WatchSystemTheme) { [Fluence.Wpf.SystemThemeWatcher]::Watch($window) $unwatch = { [Fluence.Wpf.SystemThemeWatcher]::UnWatch($window) }.GetNewClosure() $window.add_Closed($unwatch) } $null = $window.ShowDialog() if ($null -ne $state.Error) { throw $state.Error } # Wrap in a hashtable so the caller's IList-unwrap is unambiguous even when the user's stashed # result is itself an array. return @{ Result = $window.Tag } } finally { # A callback can fail before ShowDialog; WPF still registers the constructed window. $window.Close() } } |