Add tooltips to the Suggestions Control

src/cascadia/TerminalApp/SuggestionsControl.cpp

@@ -8,6 +8,7 @@
 #include <LibraryResources.h>
 
 #include "SuggestionsControl.g.cpp"
+#include "../../types/inc/utils.hpp"
 
 using namespace winrt;
 using namespace winrt::TerminalApp;
@@ -19,6 +20,8 @@ using namespace winrt::Windows::Foundation;
 using namespace winrt::Windows::Foundation::Collections;
 using namespace winrt::Microsoft::Terminal::Settings::Model;
 
+using namespace std::chrono_literals;
+
 namespace winrt::TerminalApp::implementation
 {
     SuggestionsControl::SuggestionsControl()
@@ -262,8 +265,8 @@ namespace winrt::TerminalApp::implementation
     // - <unused>
     // Return Value:
     // - <none>
-    void SuggestionsControl::_selectedCommandChanged(const IInspectable& /*sender*/,
-                                                     const Windows::UI::Xaml::RoutedEventArgs& /*args*/)
+    winrt::fire_and_forget SuggestionsControl::_selectedCommandChanged(const IInspectable& /*sender*/,
+                                                                       const Windows::UI::Xaml::RoutedEventArgs& /*args*/)
     {
         const auto selectedCommand = _filteredActionsView().SelectedItem();
         const auto filteredCommand{ selectedCommand.try_as<winrt::TerminalApp::FilteredCommand>() };
@@ -281,9 +284,75 @@ namespace winrt::TerminalApp::implementation
         {
             if (const auto actionPaletteItem{ filteredCommand.Item().try_as<winrt::TerminalApp::ActionPaletteItem>() })
             {
-                PreviewAction.raise(*this, actionPaletteItem.Command());
+                const auto& cmd = actionPaletteItem.Command();
+                PreviewAction.raise(*this, cmd);
+
+                const auto description{ cmd.Description() };
+                if (!description.empty())
+                {
+                    // If it's already open, then just re-target it and update the content immediately.
+                    if (DescriptionTip().IsOpen())
+                    {
+                        _openTooltip(cmd);
+                    }
+                    else
+                    {
+                        // Otherwise, wait a bit before opening it.
+                        co_await winrt::resume_after(200ms);
+                        co_await wil::resume_foreground(Dispatcher());
+                        _openTooltip(cmd);
+                        DescriptionTip().IsOpen(true);
+                    }
+                }
+                else
+                {
+                    // If there's no description, then just close the tooltip.
+                    DescriptionTip().IsOpen(false);
+                }
+            }
+        }
+    }
+
+    winrt::fire_and_forget SuggestionsControl::_openTooltip(Command cmd)
+    {
+        const auto description{ cmd.Description() };
+
+        if (!cmd.Description().empty())
+        {
+            DescriptionTip().Target(SelectedItem());
+            DescriptionTip().Title(cmd.Name());
+
+            // If you try to put a newline in the Subtitle, it'll _immediately
+            // close the tooltip_. Instead, we'll need to build up the text as a
+            // series of runs, and put them in the content.
+
+            _toolTipContent().Inlines().Clear();
+
+            // First, replace all "\r\n" with "\n"
+            std::wstring filtered = description.c_str();
+
+            // replace all "\r\n" with "\n" in `filtered`
+            std::wstring::size_type pos = 0;
+            while ((pos = filtered.find(L"\r\n", pos)) != std::wstring::npos)
+            {
+                filtered.erase(pos, 1);
+            }
+
+            // Split the filtered description on '\n`
+            const auto lines = ::Microsoft::Console::Utils::SplitString(filtered.c_str(), L'\n');
+            // For each line, build a Run + LineBreak, and add them to the text
+            // block
+            for (const auto& line : lines)
+            {
+                if (line.empty())
+                    continue;
+                Documents::Run textRun;
+                textRun.Text(winrt::hstring{ line });
+                _toolTipContent().Inlines().Append(textRun);
+                _toolTipContent().Inlines().Append(Documents::LineBreak{});
             }
         }
+        co_return;
     }
 
     void SuggestionsControl::_previewKeyDownHandler(const IInspectable& /*sender*/,
@@ -946,6 +1015,7 @@ namespace winrt::TerminalApp::implementation
     void SuggestionsControl::_close()
     {
         Visibility(Visibility::Collapsed);
+        DescriptionTip().IsOpen(false);
 
         // Clear the text box each time we close the dialog. This is consistent with VsCode.
         _searchBox().Text(L"");

src/cascadia/TerminalApp/SuggestionsControl.h

@@ -109,7 +109,11 @@ namespace winrt::TerminalApp::implementation
 
         void _listItemClicked(const Windows::Foundation::IInspectable& sender, const Windows::UI::Xaml::Controls::ItemClickEventArgs& e);
         void _listItemSelectionChanged(const Windows::Foundation::IInspectable& sender, const Windows::UI::Xaml::Controls::SelectionChangedEventArgs& e);
-        void _selectedCommandChanged(const Windows::Foundation::IInspectable& sender, const Windows::UI::Xaml::RoutedEventArgs& args);
+
+        winrt::fire_and_forget _selectedCommandChanged(const Windows::Foundation::IInspectable& sender,
+                                                       const Windows::UI::Xaml::RoutedEventArgs& args);
+
+        winrt::fire_and_forget _openTooltip(Microsoft::Terminal::Settings::Model::Command cmd);
 
         void _moveBackButtonClicked(const Windows::Foundation::IInspectable& sender, const Windows::UI::Xaml::RoutedEventArgs&);
         void _updateCurrentNestedCommands(const winrt::Microsoft::Terminal::Settings::Model::Command& parentCommand);

src/cascadia/TerminalApp/SuggestionsControl.xaml

@@ -206,6 +206,17 @@
                       ItemsSource="{x:Bind FilteredActions}"
                       SelectionChanged="_listItemSelectionChanged"
                       SelectionMode="Single" />
+            <mux:TeachingTip x:Name="DescriptionTip"
+                             Title=""
+                             IsOpen="False"
+                             PreferredPlacement="Right"
+                             ShouldConstrainToRootBounds="False"
+                             Subtitle="">
+                <ScrollViewer HorizontalScrollBarVisibility="Hidden"
+                              HorizontalScrollMode="Enabled">
+                    <TextBlock x:Name="_toolTipContent" />
+                </ScrollViewer>
+            </mux:TeachingTip>
 
         </Grid>
 

src/cascadia/TerminalSettingsModel/Command.cpp

@@ -27,6 +27,7 @@ static constexpr std::string_view ArgsKey{ "args" };
 static constexpr std::string_view IterateOnKey{ "iterateOn" };
 static constexpr std::string_view CommandsKey{ "commands" };
 static constexpr std::string_view KeysKey{ "keys" };
+static constexpr std::string_view DescriptionKey{ "description" };
 
 static constexpr std::string_view ProfileNameToken{ "${profile.name}" };
 static constexpr std::string_view ProfileIconToken{ "${profile.icon}" };
@@ -40,6 +41,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
     {
         auto command{ winrt::make_self<Command>() };
         command->_name = _name;
+        command->_Description = _Description;
         command->_ActionAndArgs = *get_self<implementation::ActionAndArgs>(_ActionAndArgs)->Copy();
         command->_keyMappings = _keyMappings;
         command->_iconPath = _iconPath;
@@ -254,7 +256,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
 
         auto nested = false;
         JsonUtils::GetValueForKey(json, IterateOnKey, result->_IterateOn);
-
+        JsonUtils::GetValueForKey(json, DescriptionKey, result->_Description);
         // For iterable commands, we'll make another pass at parsing them once
         // the json is patched. So ignore parsing sub-commands for now. Commands
         // will only be marked iterable on the first pass.
@@ -406,7 +408,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
             Json::Value cmdJson{ Json::ValueType::objectValue };
             JsonUtils::SetValueForKey(cmdJson, IconKey, _iconPath);
             JsonUtils::SetValueForKey(cmdJson, NameKey, _name);
-
+            JsonUtils::SetValueForKey(cmdJson, DescriptionKey, _Description);
             if (_ActionAndArgs)
             {
                 cmdJson[JsonKey(ActionKey)] = ActionAndArgs::ToJson(_ActionAndArgs);
@@ -426,6 +428,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
                     // First iteration also writes icon and name
                     JsonUtils::SetValueForKey(cmdJson, IconKey, _iconPath);
                     JsonUtils::SetValueForKey(cmdJson, NameKey, _name);
+                    JsonUtils::SetValueForKey(cmdJson, DescriptionKey, _Description);
                 }
 
                 if (_ActionAndArgs)
@@ -654,8 +657,10 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
         const auto parseElement = [&](const auto& element) {
             winrt::hstring completionText;
             winrt::hstring listText;
+            winrt::hstring tooltipText;
             JsonUtils::GetValueForKey(element, "CompletionText", completionText);
             JsonUtils::GetValueForKey(element, "ListItemText", listText);
+            JsonUtils::GetValueForKey(element, "ToolTip", tooltipText);
 
             auto args = winrt::make_self<SendInputArgs>(
                 winrt::hstring{ fmt::format(FMT_COMPILE(L"{:\x7f^{}}{}"),
@@ -668,6 +673,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
             auto c = winrt::make_self<Command>();
             c->_name = listText;
             c->_ActionAndArgs = actionAndArgs;
+            c->_Description = tooltipText;
 
             // Try to assign a sensible icon based on the result type. These are
             // roughly chosen to align with the icons in

src/cascadia/TerminalSettingsModel/Command.h

@@ -70,6 +70,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
 
         WINRT_PROPERTY(ExpandCommandType, IterateOn, ExpandCommandType::None);
         WINRT_PROPERTY(Model::ActionAndArgs, ActionAndArgs);
+        WINRT_PROPERTY(winrt::hstring, Description, L"");
 
     private:
         Json::Value _originalJson;

src/cascadia/TerminalSettingsModel/Command.idl

@@ -36,6 +36,8 @@ namespace Microsoft.Terminal.Settings.Model
         Command();
 
         String Name { get; };
+        String Description { get; };
+
         ActionAndArgs ActionAndArgs { get; };
         Microsoft.Terminal.Control.KeyChord Keys { get; };
         void RegisterKey(Microsoft.Terminal.Control.KeyChord keys);