lms chat - Add shortcuts

src/subcommands/chat/react/ChatInput.tsx

@@ -5,13 +5,24 @@ import { InputPlaceholder } from "./InputPlaceholder.js";
 import {
   deleteAfterCursor,
   deleteBeforeCursor,
+  deleteToLineEnd,
+  deleteToLineStart,
+  deleteWordBackward,
+  deleteWordForward,
   insertTextAtCursor,
   moveCursorLeft,
   moveCursorRight,
+  moveCursorToLineEnd,
+  moveCursorToLineStart,
+  moveCursorWordLeft,
+  moveCursorWordRight,
 } from "./inputReducer.js";
 import { renderInputWithCursor } from "./inputRenderer.js";
 import { type ChatUserInputState } from "./types.js";
 
+const isWindows = process.platform === "win32";
+const isMac = process.platform === "darwin";
+
 interface ChatInputProps {
   inputState: ChatUserInputState;
   isPredicting: boolean;
@@ -90,10 +101,123 @@ export const ChatInput = ({
       return;
     }
 
+    if (key.ctrl === true && inputCharacter === "d") {
+      const isInputEmpty = inputState.segments.every(segment => segment.content.length === 0);
+      if (isInputEmpty) {
+        onExit();
+        return;
+      }
+    }
+
     if (disableUserInput) {
       return;
     }
 
+    if (key.ctrl === true) {
+      // Also works as Ctrl+Backspace
+      if (inputCharacter === "w") {
+        setUserInputState(previousState => deleteWordBackward(previousState));
+        return;
+      }
+
+      // Unix/Emacs-style shortcuts (not supported on Windows)
+      if (isWindows === false) {
+        // Also works as Cmd+LeftArrow on macOS
+        if (inputCharacter === "a") {
+          setUserInputState(previousState => moveCursorToLineStart(previousState));
+          return;
+        }
+
+        // Also works as Cmd+RightArrow on macOS
+        if (inputCharacter === "e") {
+          setUserInputState(previousState => moveCursorToLineEnd(previousState));
+          return;
+        }
+
+        if (inputCharacter === "f") {
+          setUserInputState(previousState => moveCursorRight(previousState));
+          return;
+        }
+
+        if (inputCharacter === "b") {
+          setUserInputState(previousState => moveCursorLeft(previousState));
+          return;
+        }
+
+        if (inputCharacter === "d") {
+          setUserInputState(previousState => deleteAfterCursor(previousState));
+          return;
+        }
+
+        // This is usually Ctrl+Backspace or cmd+Backspace in mac
+        if (inputCharacter === "u") {
+          setUserInputState(previousState => deleteToLineStart(previousState));
+          return;
+        }
+
+        // This is usually Ctrl+Delete or cmd+Delete in mac
+        if (inputCharacter === "k") {
+          setUserInputState(previousState => deleteToLineEnd(previousState));
+          return;
+        }
+      }
+
+      if (isMac === false) {
+        if (key.leftArrow === true) {
+          setUserInputState(previousState => moveCursorWordLeft(previousState));
+          return;
+        }
+        if (key.rightArrow === true) {
+          setUserInputState(previousState => moveCursorWordRight(previousState));
+          return;
+        }
+      }
+    }
+
+    if (key.meta === true) {
+      // Also works as Option+RightArrow on macOS
+      if (inputCharacter === "f") {
+        setUserInputState(previousState => moveCursorWordRight(previousState));
+        return;
+      }
+
+      // Also works as Option+LeftArrow on macOS
+      if (inputCharacter === "b") {
+        setUserInputState(previousState => moveCursorWordLeft(previousState));
+        return;
+      }
+
+      if (isMac === false && isWindows === false) {
+        // For linux, we need to specifically check for Alt+Arrows so we have these here
+        if (key.leftArrow === true) {
+          setUserInputState(previousState => moveCursorWordLeft(previousState));
+          return;
+        }
+        if (key.rightArrow === true) {
+          setUserInputState(previousState => moveCursorWordRight(previousState));
+          return;
+        }
+      }
+      // When we press option+fn+delete on macOS, it sends meta+d
+      // and for linux, alt+d is the alternative to alt+delete for word delete forward
+      if (inputCharacter === "d") {
+        setUserInputState(previousState => deleteWordForward(previousState));
+        return;
+      }
+
+      if (key.backspace === true) {
+        setUserInputState(previousState => deleteWordBackward(previousState));
+        return;
+      }
+
+      if (isWindows) {
+        if (key.delete === true) {
+          setUserInputState(previousState => deleteWordForward(previousState));
+          return;
+        }
+      }
+    }
+
     if (areSuggestionsVisible) {
       if (key.upArrow === true) {
         onSuggestionsUp();
@@ -116,7 +240,6 @@ export const ChatInput = ({
         return;
       }
     }
-
     if (key.delete === true) {
       setUserInputState(previousState => deleteAfterCursor(previousState));
       return;