Initial project bootstrap

client/src/components/ui/textarea.tsx

@@ -0,0 +1,67 @@
+import { useDialogComposition } from "@/components/ui/dialog";
+import { useComposition } from "@/hooks/useComposition";
+import { cn } from "@/lib/utils";
+import * as React from "react";
+
+function Textarea({
+  className,
+  onKeyDown,
+  onCompositionStart,
+  onCompositionEnd,
+  ...props
+}: React.ComponentProps<"textarea">) {
+  // Get dialog composition context if available (will be no-op if not inside Dialog)
+  const dialogComposition = useDialogComposition();
+
+  // Add composition event handlers to support input method editor (IME) for CJK languages.
+  const {
+    onCompositionStart: handleCompositionStart,
+    onCompositionEnd: handleCompositionEnd,
+    onKeyDown: handleKeyDown,
+  } = useComposition<HTMLTextAreaElement>({
+    onKeyDown: (e) => {
+      // Check if this is an Enter key that should be blocked
+      const isComposing = (e.nativeEvent as any).isComposing || dialogComposition.justEndedComposing();
+
+      // If Enter key is pressed while composing or just after composition ended,
+      // don't call the user's onKeyDown (this blocks the business logic)
+      // Note: For textarea, Shift+Enter should still work for newlines
+      if (e.key === "Enter" && !e.shiftKey && isComposing) {
+        return;
+      }
+
+      // Otherwise, call the user's onKeyDown
+      onKeyDown?.(e);
+    },
+    onCompositionStart: e => {
+      dialogComposition.setComposing(true);
+      onCompositionStart?.(e);
+    },
+    onCompositionEnd: e => {
+      // Mark that composition just ended - this helps handle the Enter key that confirms input
+      dialogComposition.markCompositionEnd();
+      // Delay setting composing to false to handle Safari's event order
+      // In Safari, compositionEnd fires before the ESC keydown event
+      setTimeout(() => {
+        dialogComposition.setComposing(false);
+      }, 100);
+      onCompositionEnd?.(e);
+    },
+  });
+
+  return (
+    <textarea
+      data-slot="textarea"
+      className={cn(
+        "border-input placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive dark:bg-input/30 flex field-sizing-content min-h-16 w-full rounded-md border bg-transparent px-3 py-2 text-base shadow-xs transition-[color,box-shadow] outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        className
+      )}
+      onCompositionStart={handleCompositionStart}
+      onCompositionEnd={handleCompositionEnd}
+      onKeyDown={handleKeyDown}
+      {...props}
+    />
+  );
+}
+
+export { Textarea };