Add an openAbout action. (#15990)

Just as it says on the label.
Closes #15986

doc/cascadia/profiles.schema.json

@@ -378,8 +378,12 @@
     },
     "ShortcutActionName": {
       "enum": [
+        "addMark",
         "adjustFontSize",
+        "adjustOpacity",
+        "clearAllMarks",
         "clearBuffer",
+        "clearMark",
         "closeOtherPanes",
         "closeOtherTabs",
         "closePane",
@@ -390,6 +394,7 @@
         "copy",
         "duplicateTab",
         "expandSelectionToWord",
+        "experimental.colorSelection",
         "exportBuffer",
         "find",
         "findMatch",
@@ -397,64 +402,60 @@
         "globalSummon",
         "identifyWindow",
         "identifyWindows",
+        "markMode",
         "moveFocus",
         "movePane",
-        "swapPane",
-        "markMode",
         "moveTab",
         "multipleActions",
         "newTab",
         "newWindow",
         "nextTab",
+        "openAbout",
         "openNewTabDropdown",
         "openSettings",
+        "openSystemMenu",
         "openTabColorPicker",
+        "openTabRenamer",
         "openWindowRenamer",
         "paste",
         "prevTab",
-        "renameTab",
-        "openSystemMenu",
-        "openTabRenamer",
         "quakeMode",
+        "quit",
+        "renameTab",
+        "renameWindow",
         "resetFontSize",
         "resizePane",
-        "renameWindow",
+        "restoreLastClosed",
         "scrollDown",
         "scrollDownPage",
+        "scrollToBottom",
+        "scrollToMark",
+        "scrollToTop",
         "scrollUp",
         "scrollUpPage",
-        "scrollToBottom",
-        "scrollToTop",
+        "searchWeb",
+        "selectAll",
         "sendInput",
         "setColorScheme",
+        "setFocusMode",
+        "setFullScreen",
+        "setMaximized",
         "setTabColor",
         "showSuggestions",
         "splitPane",
+        "swapPane",
+        "switchSelectionEndpoint",
         "switchToTab",
         "tabSearch",
         "toggleAlwaysOnTop",
         "toggleBlockSelection",
         "toggleFocusMode",
-        "selectAll",
-        "setFocusMode",
-        "switchSelectionEndpoint",
         "toggleFullscreen",
-        "setFullScreen",
-        "setMaximized",
         "togglePaneZoom",
-        "toggleSplitOrientation",
         "toggleReadOnlyMode",
         "toggleShaderEffects",
+        "toggleSplitOrientation",
         "wt",
-        "quit",
-        "adjustOpacity",
-        "restoreLastClosed",
-        "addMark",
-        "scrollToMark",
-        "clearMark",
-        "clearAllMarks",
-        "searchWeb",
-        "experimental.colorSelection",
         "unbound"
       ],
       "type": "string"

src/cascadia/TerminalApp/AppActionHandlers.cpp

@@ -1419,4 +1419,10 @@ namespace winrt::TerminalApp::implementation
         }
         args.Handled(true);
     }
+    void TerminalPage::_HandleOpenAbout(const IInspectable& /*sender*/,
+                                        const ActionEventArgs& args)
+    {
+        _ShowAboutDialog();
+        args.Handled(true);
+    }
 }

src/cascadia/TerminalSettingsModel/ActionAndArgs.cpp

@@ -96,6 +96,7 @@ static constexpr std::string_view ShowContextMenuKey{ "showContextMenu" };
 static constexpr std::string_view ExpandSelectionToWordKey{ "expandSelectionToWord" };
 static constexpr std::string_view RestartConnectionKey{ "restartConnection" };
 static constexpr std::string_view ToggleBroadcastInputKey{ "toggleBroadcastInput" };
+static constexpr std::string_view OpenAboutKey{ "openAbout" };
 
 static constexpr std::string_view ActionKey{ "action" };
 
@@ -430,6 +431,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
                 { ShortcutAction::ExpandSelectionToWord, RS_(L"ExpandSelectionToWordCommandKey") },
                 { ShortcutAction::RestartConnection, RS_(L"RestartConnectionKey") },
                 { ShortcutAction::ToggleBroadcastInput, RS_(L"ToggleBroadcastInputCommandKey") },
+                { ShortcutAction::OpenAbout, RS_(L"OpenAboutCommandKey") },
             };
         }();
 

src/cascadia/TerminalSettingsModel/AllShortcutActions.h

@@ -109,7 +109,8 @@
     ON_ALL_ACTIONS(ExpandSelectionToWord)   \
     ON_ALL_ACTIONS(CloseOtherPanes)         \
     ON_ALL_ACTIONS(RestartConnection)       \
-    ON_ALL_ACTIONS(ToggleBroadcastInput)
+    ON_ALL_ACTIONS(ToggleBroadcastInput)    \
+    ON_ALL_ACTIONS(OpenAbout)
 
 #define ALL_SHORTCUT_ACTIONS_WITH_ARGS             \
     ON_ALL_ACTIONS_WITH_ARGS(AdjustFontSize)       \

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

@@ -720,4 +720,8 @@
     <value>Search the web for selected text</value>
     <comment>This will open a web browser to search for some user-selected text</comment>
   </data>
-</root>
+  <data name="OpenAboutCommandKey" xml:space="preserve">
+    <value>Open about dialog</value>
+    <comment>This will open the "about" dialog, to display version info and other documentation</comment>
+  </data>
+</root>

src/cascadia/TerminalSettingsModel/defaults.json

@@ -373,7 +373,8 @@
         { "command": "quakeMode", "keys":"win+sc(41)" },
         { "command": "openSystemMenu", "keys": "alt+space" },
         { "command": "quit" },
-        { "command": "restoreLastClosed"},
+        { "command": "restoreLastClosed" },
+        { "command": "openAbout" },
 
         // Tab Management
         // "command": "closeTab" is unbound by default.