Add text mode (#321)

* Pretty good spot

* Working draft

* Fix other mode

* Add js to git

* Working

* Add code

* fix

* Fix

* Add code

* Fix submit race condition

* demo

* fix

* Fix

* Fix

backend/fastrtc/webrtc_connection_mixin.py

@@ -42,6 +42,7 @@ from fastrtc.utils import (
     AdditionalOutputs,
     Context,
     RTCConfigurationCallable,
+    WebRTCData,
     create_message,
     webrtc_error_handler,
 )
@@ -151,6 +152,20 @@ class WebRTCConnectionMixin:
             for conn in self.connections[webrtc_id]:
                 conn.set_args(list(args))
 
+    def set_input_gradio(self, webrtc_data: WebRTCData | str, *args):
+        webrtc_id = webrtc_data
+        if isinstance(webrtc_data, WebRTCData):
+            webrtc_id = webrtc_data.webrtc_id
+        self.set_input(cast(str, webrtc_id), webrtc_data, *args)
+
+    def set_input_on_submit(self, webrtc_data: WebRTCData | str, *args):
+        webrtc_id = webrtc_data
+        if isinstance(webrtc_data, WebRTCData):
+            webrtc_id = webrtc_data.webrtc_id
+        self.set_input(cast(str, webrtc_id), webrtc_data, *args)
+        if hasattr(self.handlers[cast(str, webrtc_id)], "trigger_response"):
+            self.handlers[cast(str, webrtc_id)].trigger_response()  # type: ignore
+
     async def output_stream(
         self, webrtc_id: str
     ) -> AsyncGenerator[AdditionalOutputs, None]:
@@ -182,6 +197,19 @@ class WebRTCConnectionMixin:
         else:
             return cast(dict[str, Any], self.rtc_configuration) or {}
 
+    async def _trigger_response(self, webrtc_id: str, args: list[Any] | None = None):
+        from fastrtc import ReplyOnPause
+
+        if webrtc_id in self.connections and isinstance(
+            self.handlers[webrtc_id], ReplyOnPause
+        ):
+            if args:
+                cast(ReplyOnPause, self.handlers[webrtc_id]).set_args(args)
+            cast(ReplyOnPause, self.handlers[webrtc_id]).trigger_response()
+            return {"status": "success"}
+        else:
+            return {"status": "failed", "meta": {"error": "not_a_reply_on_pause"}}
+
     async def handle_offer(self, body, set_outputs):
         logger.debug("Starting to handle offer")
         logger.debug("Offer body %s", body)