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Do not update WindowTitle at all in prompt func if setting is $null #597
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d828fe4
Do not update WindowTitle at all in prompt func if setting is $null
rkeithhill e585ac1
Extract WindowTitle functions
dahlbyk f02abfa
Lazily Test-WindowTitleIsWriteable
dahlbyk 98782f4
Avoid global variable for OriginalWindowTitle
dahlbyk 8c1c74a
Add better WindowTitle debug messages
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| $HostSupportsSettingWindowTitle = $null | ||
| $OriginalWindowTitle = $null | ||
|
|
||
| function Test-WindowTitleIsWriteable { | ||
| if ($null -eq $HostSupportsSettingWindowTitle) { | ||
| # Probe $Host.UI.RawUI.WindowTitle to see if it can be set without errors | ||
| try { | ||
| $script:OriginalWindowTitle = $Host.UI.RawUI.WindowTitle | ||
| $newTitle = "${OriginalWindowTitle} " | ||
| $Host.UI.RawUI.WindowTitle = $newTitle | ||
| $script:HostSupportsSettingWindowTitle = ($Host.UI.RawUI.WindowTitle -eq $newTitle) | ||
| $Host.UI.RawUI.WindowTitle = $OriginalWindowTitle | ||
| Write-Debug "HostSupportsSettingWindowTitle: $HostSupportsSettingWindowTitle" | ||
| Write-Debug "OriginalWindowTitle: $OriginalWindowTitle" | ||
| } | ||
| catch { | ||
| $script:OriginalWindowTitle = $null | ||
| $script:HostSupportsSettingWindowTitle = $false | ||
| Write-Debug "HostSupportsSettingWindowTitle error: $_" | ||
| } | ||
| } | ||
| return $HostSupportsSettingWindowTitle | ||
| } | ||
|
|
||
| function Reset-WindowTitle { | ||
| [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseShouldProcessForStateChangingFunctions", "")] | ||
| param() | ||
| $settings = $global:GitPromptSettings | ||
|
|
||
| # Revert to original WindowTitle, but only if posh-git is currently configured to set it | ||
| if ($HostSupportsSettingWindowTitle -and $OriginalWindowTitle -and $settings.WindowTitle) { | ||
| Write-Debug "Resetting WindowTitle: '$OriginalWindowTitle'" | ||
| $Host.UI.RawUI.WindowTitle = $OriginalWindowTitle | ||
| } | ||
| } | ||
|
|
||
| function Set-WindowTitle { | ||
| [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseShouldProcessForStateChangingFunctions", "")] | ||
| param($GitStatus, $IsAdmin) | ||
| $settings = $global:GitPromptSettings | ||
|
|
||
| # Update the host's WindowTitle if host supports it and user has not disabled $GitPromptSettings.WindowTitle | ||
| if ($settings.WindowTitle -and (Test-WindowTitleIsWriteable)) { | ||
| try { | ||
| if ($settings.WindowTitle -is [scriptblock]) { | ||
| # ensure results returned by scriptblock are flattened into a string | ||
| $windowTitleText = "$(& $settings.WindowTitle $GitStatus $IsAdmin)" | ||
| } | ||
| else { | ||
| $windowTitleText = $ExecutionContext.SessionState.InvokeCommand.ExpandString("$($settings.WindowTitle)") | ||
| } | ||
|
|
||
| Write-Debug "Setting WindowTitle: $windowTitleText" | ||
| $Host.UI.RawUI.WindowTitle = "$windowTitleText" | ||
| } | ||
| catch { | ||
| Write-Debug "Error occurred during evaluation of `$GitPromptSettings.WindowTitle: $_" | ||
| } | ||
| } | ||
| } | ||
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