Add support for tmux control mode (#3656)

Author: joexue

src/cascadia/TerminalApp/Pane.cpp

@@ -1304,10 +1304,10 @@ void Pane::UpdateSettings(const CascadiaSettings& settings)
 // - splitType: How the pane should be attached
 // Return Value:
 // - the new reference to the child created from the current pane.
-std::shared_ptr<Pane> Pane::AttachPane(std::shared_ptr<Pane> pane, SplitDirection splitType)
+std::shared_ptr<Pane> Pane::AttachPane(std::shared_ptr<Pane> pane, SplitDirection splitType, const float splitSize)
 {
     // Splice the new pane into the tree
-    const auto [first, _] = _Split(splitType, .5, pane);
+    const auto [first, _] = _Split(splitType, splitSize, pane);
 
     // If the new pane has a child that was the focus, re-focus it
     // to steal focus from the currently focused pane.

src/cascadia/TerminalApp/Pane.h

@@ -131,7 +131,8 @@ class Pane : public std::enable_shared_from_this<Pane>
     void Close();
 
     std::shared_ptr<Pane> AttachPane(std::shared_ptr<Pane> pane,
-                                     winrt::Microsoft::Terminal::Settings::Model::SplitDirection splitType);
+                                     winrt::Microsoft::Terminal::Settings::Model::SplitDirection splitType,
+                                     const float splitSize = .5);
     std::shared_ptr<Pane> DetachPane(std::shared_ptr<Pane> pane);
 
     int GetLeafPaneCount() const noexcept;

src/cascadia/TerminalApp/TabRowControl.xaml

@@ -132,6 +132,38 @@
                         </ResourceDictionary>
                     </mux:SplitButton.Resources>
                 </mux:SplitButton>
+                <mux:SplitButton x:Name="NewTmuxTabButton"
+                                 x:Uid="NewTmuxTabSplitButton"
+                                 Height="24"
+                                 Margin="0,4"
+                                 Padding="0"
+                                 HorizontalAlignment="Left"
+                                 VerticalAlignment="Stretch"
+                                 AllowDrop="False"
+                                 AutomationProperties.AccessibilityView="Control"
+                                 BorderThickness="0"
+                                 Content="&#xE710;"
+                                 FontFamily="{ThemeResource SymbolThemeFontFamily}"
+                                 FontSize="12"
+                                 Visibility="Collapsed">
+                    <mux:SplitButton.Flyout>
+                        <MenuFlyout x:Name="SplitMenu" Placement="BottomEdgeAlignedLeft">
+                            <MenuFlyoutItem Text="Horizontal Split">
+                                <MenuFlyoutItem.Icon>
+                                    <FontIcon Glyph="&#xE784;">
+                                    </FontIcon>
+                                </MenuFlyoutItem.Icon>
+                            </MenuFlyoutItem>
+                            <MenuFlyoutItem Text="Vertical Split">
+                                <MenuFlyoutItem.Icon>
+                                    <FontIcon Glyph="&#xE76F;">
+                                    </FontIcon>
+                                </MenuFlyoutItem.Icon>
+                            </MenuFlyoutItem>
+                        </MenuFlyout>
+                    </mux:SplitButton.Flyout>
+
+                </mux:SplitButton>
             </Grid>
         </mux:TabView.TabStripFooter>
 

src/cascadia/TerminalApp/TerminalAppLib.vcxproj

@@ -178,6 +178,9 @@
     <ClInclude Include="SettingsPaneContent.h">
       <DependentUpon>TerminalPaneContent.idl</DependentUpon>
     </ClInclude>
+    <ClInclude Include="TmuxControl.h">
+      <DependentUpon>TerminalPage.idl</DependentUpon>
+    </ClInclude>
     <ClInclude Include="Toast.h" />
     <ClInclude Include="TerminalSettingsCache.h">
       <DependentUpon>TerminalSettingsCache.idl</DependentUpon>
@@ -302,6 +305,9 @@
     <ClCompile Include="SettingsPaneContent.cpp">
       <DependentUpon>TerminalPaneContent.idl</DependentUpon>
     </ClCompile>
+    <ClCompile Include="TmuxControl.cpp">
+      <DependentUpon>TerminalPage.xaml</DependentUpon>
+    </ClCompile>
     <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
     <ClCompile Include="Toast.cpp" />
     <ClCompile Include="TerminalSettingsCache.cpp">

src/cascadia/TerminalApp/TerminalPage.cpp

@@ -18,6 +18,7 @@
 #include "ScratchpadContent.h"
 #include "SnippetsPaneContent.h"
 #include "MarkdownPaneContent.h"
+#include "TmuxControl.h"
 #include "TabRowControl.h"
 #include "Remoting.h"
 
@@ -104,6 +105,8 @@ namespace winrt::TerminalApp::implementation
             }
         }
         _hostingHwnd = hwnd;
+
+        _tmuxControl = std::make_unique<TmuxControl>(*this);
         return S_OK;
     }
 
@@ -3354,6 +3357,9 @@ namespace winrt::TerminalApp::implementation
             resultPane->ClearActive();
             original->SetActive();
         }
+        control.SetTmuxControlHandlerProducer([this, control](auto print) {
+            return _tmuxControl->TmuxControlHandlerProducer(control, print);
+        });
 
         return resultPane;
     }

src/cascadia/TerminalApp/TerminalPage.h

@@ -10,6 +10,7 @@
 #include "RenameWindowRequestedArgs.g.h"
 #include "RequestMoveContentArgs.g.h"
 #include "LaunchPositionRequest.g.h"
+#include "TmuxControl.h"
 #include "Toast.h"
 
 #include "WindowsPackageManagerFactory.h"
@@ -245,6 +246,7 @@ namespace winrt::TerminalApp::implementation
         std::vector<std::vector<Microsoft::Terminal::Settings::Model::ActionAndArgs>> _previouslyClosedPanesAndTabs{};
 
         uint32_t _systemRowsToScroll{ DefaultRowsToScroll };
+        std::unique_ptr<TmuxControl> _tmuxControl{ nullptr };
 
         // use a weak reference to prevent circular dependency with AppLogic
         winrt::weak_ref<winrt::TerminalApp::IDialogPresenter> _dialogPresenter;
@@ -565,6 +567,7 @@ namespace winrt::TerminalApp::implementation
 
         friend class TerminalAppLocalTests::TabTests;
         friend class TerminalAppLocalTests::SettingsTests;
+        friend class TmuxControl;
     };
 }