Update app.py

app.py

@@ -163,7 +163,29 @@ def switch_content(choice):
         return HF_REFERENCE_HTML
 
 
-with gr.Blocks() as demo:
+with gr.Blocks(
+    head="""
+<script>
+document.addEventListener("mouseup", function () {
+    const selection = window.getSelection().toString().trim();
+    if (selection.length > 0) {
+        const textboxContainer = document.querySelector('[aria-label="Selected text"]');
+        if (textboxContainer) {
+            const textarea = textboxContainer.querySelector("textarea");
+            if (textarea) {
+                const nativeSetter = Object.getOwnPropertyDescriptor(
+                    window.HTMLTextAreaElement.prototype,
+                    "value"
+                ).set;
+                nativeSetter.call(textarea, selection);
+                textarea.dispatchEvent(new Event("input", { bubbles: true }));
+            }
+        }
+    }
+});
+</script>
+"""
+) as demo:
     gr.Markdown("### 📘 Highlight text and ask GPT for help")
     
     view_toggle = gr.Radio(