Support remapping keybindings

src/cascadia/TerminalApp/App.cpp

@@ -405,7 +405,7 @@ namespace winrt::TerminalApp::implementation
     // - <none>
     void App::_ReloadSettings()
     {
-        _settings = CascadiaSettings::LoadAll();
+        _settings = CascadiaSettings::LoadAll(false);
         // Re-wire the keybindings to their handlers, as we'll have created a
         // new AppKeyBindings object.
         _HookupKeyBindings(_settings->GetKeybindings());

src/cascadia/TerminalApp/AppKeyBindings.h

@@ -32,6 +32,9 @@ namespace winrt::TerminalApp::implementation
     {
         AppKeyBindings() = default;
 
+        static TerminalApp::AppKeyBindings FromJson(Windows::Data::Json::JsonArray const& json);
+        Windows::Data::Json::JsonArray ToJson();
+
         bool TryKeyChord(winrt::Microsoft::Terminal::Settings::KeyChord const& kc);
         void SetKeyBinding(TerminalApp::ShortcutAction const& action, winrt::Microsoft::Terminal::Settings::KeyChord const& chord);
 

src/cascadia/TerminalApp/AppKeyBindings.idl

@@ -65,6 +65,9 @@ namespace TerminalApp
     {
         AppKeyBindings();
 
+        Windows.Data.Json.JsonArray ToJson();
+        static AppKeyBindings FromJson(Windows.Data.Json.JsonArray json);
+
         void SetKeyBinding(ShortcutAction action, Microsoft.Terminal.Settings.KeyChord chord);
 
         event CopyTextEventArgs CopyText;

src/cascadia/TerminalApp/CascadiaSettingsSerialization.cpp

@@ -137,6 +137,9 @@ JsonObject CascadiaSettings::ToJson() const
     jsonObject.Insert(PROFILES_KEY, profilesArray);
     jsonObject.Insert(SCHEMES_KEY, schemesArray);
 
+    jsonObject.Insert(KEYBINDINGS_KEY,
+                      _globals.GetKeybindings().ToJson());
+
     return jsonObject;
 }
 
@@ -190,9 +193,18 @@ std::unique_ptr<CascadiaSettings> CascadiaSettings::FromJson(JsonObject json)
         }
     }
 
-    // TODO:MSFT:20700157
     // Load the keybindings from the file as well
-    resultPtr->_CreateDefaultKeybindings();
+    if (json.HasKey(KEYBINDINGS_KEY))
+    {
+        const auto keybindingsObj = json.GetNamedArray(KEYBINDINGS_KEY);
+        auto loadedBindings = AppKeyBindings::FromJson(keybindingsObj);
+        resultPtr->_globals.SetKeybindings(loadedBindings);
+    }
+    else
+    {
+        // Create the default keybindings if we couldn't find any keybindings.
+        resultPtr->_CreateDefaultKeybindings();
+    }
 
     return resultPtr;
 }

src/cascadia/TerminalApp/GlobalAppSettings.cpp

@@ -71,6 +71,11 @@ AppKeyBindings GlobalAppSettings::GetKeybindings() const noexcept
     return _keybindings;
 }
 
+void GlobalAppSettings::SetKeybindings(winrt::TerminalApp::AppKeyBindings newBindings) noexcept
+{
+    _keybindings = newBindings;
+}
+
 bool GlobalAppSettings::GetAlwaysShowTabs() const noexcept
 {
     return _alwaysShowTabs;
@@ -153,6 +158,9 @@ JsonObject GlobalAppSettings::ToJson() const
                           JsonValue::CreateStringValue(_SerializeTheme(_requestedTheme)));
     }
 
+    // We'll add the keybindings later in CascadiaSettings, because if we do it
+    // here, they'll appear before the profiles.
+
     return jsonObject;
 }
 

src/cascadia/TerminalApp/GlobalAppSettings.h

@@ -35,6 +35,7 @@ class TerminalApp::GlobalAppSettings final
     GUID GetDefaultProfile() const noexcept;
 
     winrt::TerminalApp::AppKeyBindings GetKeybindings() const noexcept;
+    void SetKeybindings(winrt::TerminalApp::AppKeyBindings newBindings) noexcept;
 
     bool GetAlwaysShowTabs() const noexcept;
     void SetAlwaysShowTabs(const bool showTabs) noexcept;

src/cascadia/TerminalApp/KeyChordSerialization.cpp

@@ -0,0 +1,249 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+#include "pch.h"
+#include "KeyChordSerialization.h"
+
+using namespace winrt::Microsoft::Terminal::Settings;
+
+static constexpr std::wstring_view CTRL_KEY{ L"ctrl" };
+static constexpr std::wstring_view SHIFT_KEY{ L"shift" };
+static constexpr std::wstring_view ALT_KEY{ L"alt" };
+
+static constexpr int MAX_CHORD_PARTS = 4;
+
+static const std::unordered_map<int32_t, std::wstring_view> vkeyNamePairs {
+    { VK_BACK       , L"backspace"},
+    { VK_TAB        , L"tab"},
+    { VK_RETURN     , L"enter" },
+    { VK_ESCAPE     , L"esc" },
+    { VK_SPACE      , L"space" },
+    { VK_PRIOR      , L"pgup" },
+    { VK_NEXT       , L"pgdn" },
+    { VK_END        , L"end" },
+    { VK_HOME       , L"home" },
+    { VK_LEFT       , L"left" },
+    { VK_UP         , L"up" },
+    { VK_RIGHT      , L"right" },
+    { VK_DOWN       , L"down" },
+    { VK_INSERT     , L"insert" },
+    { VK_DELETE     , L"delete" },
+    { VK_NUMPAD0    , L"numpad_0" },
+    { VK_NUMPAD1    , L"numpad_1" },
+    { VK_NUMPAD2    , L"numpad_2" },
+    { VK_NUMPAD3    , L"numpad_3" },
+    { VK_NUMPAD4    , L"numpad_4" },
+    { VK_NUMPAD5    , L"numpad_5" },
+    { VK_NUMPAD6    , L"numpad_6" },
+    { VK_NUMPAD7    , L"numpad_7" },
+    { VK_NUMPAD8    , L"numpad_8" },
+    { VK_NUMPAD9    , L"numpad_9" },
+    { VK_MULTIPLY   , L"numpad_multiply" },
+    { VK_ADD        , L"numpad_plus" },
+    { VK_SUBTRACT   , L"numpad_minus" },
+    { VK_DECIMAL    , L"numpad_period" },
+    { VK_DIVIDE     , L"numpad_divide" },
+    { VK_F1         , L"f1" },
+    { VK_F2         , L"f2" },
+    { VK_F3         , L"f3" },
+    { VK_F4         , L"f4" },
+    { VK_F5         , L"f5" },
+    { VK_F6         , L"f6" },
+    { VK_F7         , L"f7" },
+    { VK_F8         , L"f8" },
+    { VK_F9         , L"f9" },
+    { VK_F10        , L"f10" },
+    { VK_F11        , L"f11" },
+    { VK_F12        , L"f12" },
+    { VK_F13        , L"f13" },
+    { VK_F14        , L"f14" },
+    { VK_F15        , L"f15" },
+    { VK_F16        , L"f16" },
+    { VK_F17        , L"f17" },
+    { VK_F18        , L"f18" },
+    { VK_F19        , L"f19" },
+    { VK_F20        , L"f20" },
+    { VK_F21        , L"f21" },
+    { VK_F22        , L"f22" },
+    { VK_F23        , L"f23" },
+    { VK_F24        , L"f24" },
+    { VK_OEM_PLUS   , L"plus" },
+    { VK_OEM_COMMA  , L"," },
+    { VK_OEM_MINUS  , L"-" },
+    { VK_OEM_PERIOD , L"." }
+// TODO:
+// These all look like they'd be good keybindings, but change based on keyboard
+// layout. How do we deal with that?
+// #define VK_OEM_NEC_EQUAL  0x92   // '=' key on numpad
+// #define VK_OEM_1          0xBA   // ';:' for US
+// #define VK_OEM_2          0xBF   // '/?' for US
+// #define VK_OEM_3          0xC0   // '`~' for US
+// #define VK_OEM_4          0xDB  //  '[{' for US
+// #define VK_OEM_5          0xDC  //  '\|' for US
+// #define VK_OEM_6          0xDD  //  ']}' for US
+// #define VK_OEM_7          0xDE  //  ''"' for US
+};
+
+// Function Description:
+// - Deserializes the given string into a new KeyChord instance. If this
+//   fails to translate the string into a keychord, it will throw a
+//   hresult_invalid_argument exception.
+// - The string should fit the format "[ctrl+][alt+][shift+]<keyName>",
+//   where each modifier is optional, and keyName is either one of the
+//   names listed in the vkeyNamePairs vector above, or is one of 0-9a-zA-Z.
+// Arguments:
+// - hstr: the string to parse into a keychord.
+// Return Value:
+// - a newly constructed KeyChord
+winrt::Microsoft::Terminal::Settings::KeyChord KeyChordSerialization::FromString(const winrt::hstring& hstr)
+{
+    std::wstring wstr{ hstr };
+
+    // Split the string on '+'
+    std::wstring temp;
+    std::vector<std::wstring> parts;
+    std::wstringstream wss(wstr);
+
+    while(std::getline(wss, temp, L'+'))
+    {
+        parts.push_back(temp);
+
+        // If we have > 4, something's wrong.
+        if (parts.size() > MAX_CHORD_PARTS)
+        {
+            throw winrt::hresult_invalid_argument();
+        }
+    }
+
+    KeyModifiers modifiers = KeyModifiers::None;
+    int32_t vkey = 0;
+
+    // Look for ctrl, shift, alt. Anything else might be a key
+    for (const auto& part : parts)
+    {
+        std::wstring lowercase = part;
+        std::transform(lowercase.begin(), lowercase.end(), lowercase.begin(), std::towlower);
+        if (lowercase == CTRL_KEY)
+        {
+            modifiers |= KeyModifiers::Ctrl;
+        }
+        else if (lowercase == ALT_KEY)
+        {
+            modifiers |= KeyModifiers::Alt;
+        }
+        else if (lowercase == SHIFT_KEY)
+        {
+            modifiers |= KeyModifiers::Shift;
+        }
+        else
+        {
+            bool foundKey = false;
+            // For potential keys, look through the pairs of strings and vkeys
+            if (part.size() == 1)
+            {
+                const wchar_t wch = part[0];
+                // Quick lookup: ranges of vkeys that correlate directly to a key.
+                if (wch >= L'0' && wch <= L'9')
+                {
+                    vkey = static_cast<int32_t>(wch);
+                    foundKey = true;
+                }
+                else if (wch >= L'a' && wch <= L'z')
+                {
+                    // subtract 0x20 to shift to uppercase
+                    vkey = static_cast<int32_t>(wch - 0x20);
+                    foundKey = true;
+                }
+                else if (wch >= L'A' && wch <= L'Z')
+                {
+                    vkey = static_cast<int32_t>(wch);
+                    foundKey = true;
+                }
+            }
+
+            // If we didn't find the key with a quick lookup, search the
+            // table to see if we have a matching name.
+            if (!foundKey)
+            {
+                for (const auto& pair : vkeyNamePairs)
+                {
+                    if (pair.second == part)
+                    {
+                        vkey = pair.first;
+                        foundKey = true;
+                        break;
+                    }
+                }
+            }
+
+            // If we weren't able to find a match, throw an exception.
+            if (!foundKey)
+            {
+                throw winrt::hresult_invalid_argument();
+            }
+        }
+    }
+
+    return winrt::Microsoft::Terminal::Settings::KeyChord{ modifiers, vkey };
+}
+
+// Function Description:
+// - Serialize this keychord into a string represenation.
+// - The string will fit the format "[ctrl+][alt+][shift+]<keyName>",
+//   where each modifier is optional, and keyName is either one of the
+//   names listed in the vkeyNamePairs vector above, or is one of 0-9a-z.
+// Return Value:
+// - a string which is an equivalent serialization of this object.
+winrt::hstring KeyChordSerialization::ToString(const KeyChord& chord)
+{
+    bool serializedSuccessfully = false;
+    const auto modifiers = chord.Modifiers();
+    const auto vkey = chord.Vkey();
+
+    std::wstring buffer{ L"" };
+
+    // Add modifiers
+    if (WI_IsFlagSet(modifiers, KeyModifiers::Ctrl))
+    {
+        buffer += CTRL_KEY;
+        buffer += L"+";
+    }
+    if (WI_IsFlagSet(modifiers, KeyModifiers::Alt))
+    {
+        buffer += ALT_KEY;
+        buffer += L"+";
+    }
+    if (WI_IsFlagSet(modifiers, KeyModifiers::Shift))
+    {
+        buffer += SHIFT_KEY;
+        buffer += L"+";
+    }
+
+    // Quick lookup: ranges of vkeys that correlate directly to a key.
+    if (vkey >= L'0' && vkey <= L'9')
+    {
+        buffer += std::wstring(1, static_cast<wchar_t>(vkey));
+        serializedSuccessfully = true;
+    }
+    else if (vkey >= L'A' && vkey <= L'Z')
+    {
+        // add 0x20 to shift to lowercase
+        buffer += std::wstring(1, static_cast<wchar_t>(vkey + 0x20));
+        serializedSuccessfully = true;
+    }
+    else
+    {
+        if (vkeyNamePairs.find(vkey) != vkeyNamePairs.end())
+        {
+            buffer += vkeyNamePairs.at(vkey);
+            serializedSuccessfully = true;
+        }
+    }
+
+    if (!serializedSuccessfully)
+    {
+        buffer = L"";
+    }
+
+    return winrt::hstring{ buffer };
+}

src/cascadia/TerminalApp/KeyChordSerialization.h

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+#pragma once
+#include <winrt/Microsoft.Terminal.Settings.h>
+
+class KeyChordSerialization final
+{
+public:
+    static winrt::Microsoft::Terminal::Settings::KeyChord FromString(const winrt::hstring& str);
+    static winrt::hstring ToString(const winrt::Microsoft::Terminal::Settings::KeyChord& chord);
+};

src/cascadia/TerminalApp/TerminalApp.vcxproj

@@ -41,6 +41,7 @@
     <ClInclude Include="GlobalAppSettings.h" />
     <ClInclude Include="Profile.h" />
     <ClInclude Include="CascadiaSettings.h" />
+    <ClInclude Include="KeyChordSerialization.h" />
     <ClInclude Include="pch.h" />
     <ClInclude Include="AppKeyBindings.h">
       <DependentUpon>AppKeyBindings.idl</DependentUpon>
@@ -58,6 +59,7 @@
     <ClCompile Include="Profile.cpp" />
     <ClCompile Include="CascadiaSettings.cpp" />
     <ClCompile Include="CascadiaSettingsSerialization.cpp" />
+    <ClCompile Include="KeyChordSerialization.cpp" />
     <ClCompile Include="pch.cpp">
       <PrecompiledHeader>Create</PrecompiledHeader>
     </ClCompile>
@@ -128,4 +130,4 @@
     </PropertyGroup>
     <Error Condition="!Exists('..\..\..\packages\Microsoft.UI.Xaml.2.1.190405001-prerelease\build\native\Microsoft.UI.Xaml.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.UI.Xaml.2.1.190405001-prerelease\build\native\Microsoft.UI.Xaml.targets'))" />
   </Target>
-</Project>
+</Project>