Add firstWindowPreference value for layout only

src/cascadia/TerminalSettingsEditor/Resources/en-US/Resources.resw

@@ -452,6 +452,14 @@
     <value>Open windows from a previous session</value>
     <comment>An option to choose from for the "First window preference" setting. Reopen the layouts from the last session.</comment>
   </data>
+  <data name="Globals_FirstWindowPreferencePersistedLayoutAndContent.Content" xml:space="preserve">
+    <value>Open windows from a previous session (layout and content)</value>
+    <comment>An option to choose from for the "First window preference" setting. Reopen the layouts from the last session and preserve the content.</comment>
+  </data>
+  <data name="Globals_FirstWindowPreferencePersistedLayout.Content" xml:space="preserve">
+    <value>Open windows from a previous session (layout only)</value>
+    <comment>An option to choose from for the "First window preference" setting. Reopen the layouts from the last session, but don't preserve the content.</comment>
+  </data>
   <data name="Globals_LaunchMode.Header" xml:space="preserve">
     <value>Launch mode</value>
     <comment>Header for a control to select what mode to launch the terminal in.</comment>

src/cascadia/TerminalSettingsModel/EnumMappings.cpp

@@ -34,7 +34,6 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
     DEFINE_ENUM_MAP(Model::NewTabPosition, NewTabPosition);
     DEFINE_ENUM_MAP(winrt::Microsoft::UI::Xaml::Controls::TabViewWidthMode, TabViewWidthMode);
     DEFINE_ENUM_MAP(Microsoft::Terminal::Control::DefaultInputScope, DefaultInputScope);
-    DEFINE_ENUM_MAP(Model::FirstWindowPreference, FirstWindowPreference);
     DEFINE_ENUM_MAP(Model::LaunchMode, LaunchMode);
     DEFINE_ENUM_MAP(Model::TabSwitcherMode, TabSwitcherMode);
     DEFINE_ENUM_MAP(Microsoft::Terminal::Control::CopyFormat, CopyFormat);
@@ -84,4 +83,21 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
         }();
         return enumMap;
     }
+
+    winrt::Windows::Foundation::Collections::IMap<winrt::hstring, Model::FirstWindowPreference> EnumMappings::FirstWindowPreference()
+    {
+        static auto enumMap = []() {
+            auto map = single_threaded_map<winrt::hstring, Model::FirstWindowPreference>();
+            for (auto [enumStr, enumVal] : JsonUtils::ConversionTrait<Model::FirstWindowPreference>::mappings)
+            {
+                // exclude legacy value from enum map
+                if (enumStr != "persistedWindowLayout")
+                {
+                    map.Insert(winrt::to_hstring(enumStr), enumVal);
+                }
+            }
+            return map;
+        }();
+        return enumMap;
+    }
 }

src/cascadia/TerminalSettingsModel/GlobalAppSettings.cpp

@@ -23,13 +23,15 @@ static constexpr std::string_view KeybindingsKey{ "keybindings" };
 static constexpr std::string_view ActionsKey{ "actions" };
 static constexpr std::string_view ThemeKey{ "theme" };
 static constexpr std::string_view DefaultProfileKey{ "defaultProfile" };
+static constexpr std::string_view FirstWindowPreferenceKey{ "firstWindowPreference" };
 static constexpr std::string_view LegacyUseTabSwitcherModeKey{ "useTabSwitcher" };
 static constexpr std::string_view LegacyReloadEnvironmentVariablesKey{ "compatibility.reloadEnvironmentVariables" };
 static constexpr std::string_view LegacyForceVTInputKey{ "experimental.input.forceVT" };
 static constexpr std::string_view LegacyInputServiceWarningKey{ "inputServiceWarning" };
 static constexpr std::string_view LegacyWarnAboutLargePasteKey{ "largePasteWarning" };
 static constexpr std::string_view LegacyWarnAboutMultiLinePasteKey{ "multiLinePasteWarning" };
 static constexpr std::string_view LegacyConfirmCloseAllTabsKey{ "confirmCloseAllTabs" };
+static constexpr std::string_view LegacyPersistedWindowLayout{ "persistedWindowLayout" };
 
 // Method Description:
 // - Copies any extraneous data from the parent before completing a CreateChild call
@@ -196,6 +198,13 @@ void GlobalAppSettings::LayerJson(const Json::Value& json, const OriginTag origi
         _logSettingSet(LegacyForceVTInputKey);
     }
 
+    // GLOBAL_SETTINGS_LAYER_JSON above should have already loaded this value properly.
+    // We just need to detect if the legacy value was used and mark it for fixup, if so.
+    if (const auto firstWindowPreferenceValue = json[FirstWindowPreferenceKey.data()])
+    {
+        _fixupsAppliedDuringLoad = _fixupsAppliedDuringLoad || firstWindowPreferenceValue == LegacyPersistedWindowLayout.data();
+    }
+
     // Remove settings included in userDefaults
     static constexpr std::array<std::pair<std::string_view, std::string_view>, 2> userDefaultSettings{ { { "copyOnSelect", "false" },
                                                                                                          { "copyFormatting", "false" } } };
@@ -377,7 +386,7 @@ void GlobalAppSettings::ExpandCommands(const winrt::Windows::Foundation::Collect
 
 bool GlobalAppSettings::ShouldUsePersistedLayout() const
 {
-    return FirstWindowPreference() == FirstWindowPreference::PersistedWindowLayout;
+    return FirstWindowPreference() != FirstWindowPreference::DefaultProfile;
 }
 
 void GlobalAppSettings::ResolveMediaResources(const Model::MediaResourceResolver& resolver)

src/cascadia/TerminalSettingsModel/GlobalAppSettings.idl

@@ -40,7 +40,8 @@ namespace Microsoft.Terminal.Settings.Model
     enum FirstWindowPreference
     {
         DefaultProfile,
-        PersistedWindowLayout,
+        PersistedLayout,
+        PersistedLayoutAndContent,
     };
 
     enum NewTabPosition

src/cascadia/TerminalSettingsModel/TerminalSettingsSerializationHelpers.h

@@ -260,9 +260,13 @@ JSON_ENUM_MAPPER(::winrt::Microsoft::Terminal::Settings::Model::NewTabPosition)
 
 JSON_ENUM_MAPPER(::winrt::Microsoft::Terminal::Settings::Model::FirstWindowPreference)
 {
-    JSON_MAPPINGS(2) = {
+    JSON_MAPPINGS(4) = {
         pair_type{ "defaultProfile", ValueType::DefaultProfile },
-        pair_type{ "persistedWindowLayout", ValueType::PersistedWindowLayout },
+        pair_type{ "persistedLayoutAndContent", ValueType::PersistedLayoutAndContent },
+        pair_type{ "persistedLayout", ValueType::PersistedLayout },
+
+        // Keep deprecated keys last, so when they get serialized again they aren't written out
+        pair_type{ "persistedWindowLayout", ValueType::PersistedLayoutAndContent },
     };
 };
 

src/cascadia/WindowsTerminal/WindowEmperor.cpp

@@ -1053,7 +1053,7 @@ void WindowEmperor::_finalizeSessionPersistence() const
 
     const auto state = ApplicationState::SharedInstance();
 
-    _persistState(state, true);
+    _persistState(state, _app.Logic().Settings().GlobalSettings().FirstWindowPreference() == FirstWindowPreference::PersistedLayoutAndContent);
 
     if (_needsPersistenceCleanup)
     {