update

app.py

@@ -291,7 +291,7 @@ with gr.Blocks() as demo:
 	
 	# +========================================================================================+
 	# |                                Stage1: channel mapping                                 |
-	# +========================================================================================+
+	# +========================================================================================+	
 	def reset_all(in_loc):
 		# establish a new folder for the current session
 		rootpath = os.path.dirname(str(in_loc))
@@ -437,8 +437,8 @@ with gr.Blocks() as demo:
 						tpl_img : gr.Image(visible=False),
 						mapped_img : gr.Image(visible=False),
 						next_btn : gr.Button(visible=False),
-						out_json_file : gr.File(filename, visible=True),
-						run_btn : gr.Button(interactive=True)}
+						out_json_file : gr.File(filename, visible=True)}
+						#run_btn : gr.Button(interactive=True)}
 			
 			# step1 to step2
 			# matched_num < 30, and there're still some unmatched in_channels
@@ -538,8 +538,8 @@ with gr.Blocks() as demo:
 						radio_group : gr.Radio(visible=False),
 						out_json_file : gr.File(filename, visible=True),
 						clear_btn : gr.Button(visible=False),
-						next_btn : gr.Button(visible=False),
-						run_btn : gr.Button(interactive=True)}
+						next_btn : gr.Button(visible=False)}
+						#run_btn : gr.Button(interactive=True)}
 			# step2 to step3-1
 			else:
 				md = """
@@ -579,8 +579,8 @@ with gr.Blocks() as demo:
 						desc_md : gr.Markdown(md),
 						in_fillmode : gr.Dropdown(visible=False),
 						fillmode_btn : gr.Button(visible=False),
-						out_json_file : gr.File(filename, visible=True),
-						run_btn : gr.Button(interactive=True)}
+						out_json_file : gr.File(filename, visible=True)}
+						#run_btn : gr.Button(interactive=True)}
 			# step3-1 to step3-2
 			elif fillmode == "mean":
 				md = """
@@ -653,14 +653,14 @@ with gr.Blocks() as demo:
 					desc_md : gr.Markdown(md),
 					chkbox_group : gr.CheckboxGroup(visible=False),
 					next_btn : gr.Button(visible=False),
-					out_json_file : gr.File(filename, visible=True),
-					run_btn : gr.Button(interactive=True)}
+					out_json_file : gr.File(filename, visible=True)}
+					#run_btn : gr.Button(interactive=True)}
 	
 	next_btn.click(
 		fn = init_next_step,
 		inputs = [app_info_json, channel_info_json, in_fillmode, radio_group, chkbox_group],
 		outputs = [app_info_json, channel_info_json, desc_md, tpl_img, mapped_img, radio_group, clear_btn, step2_btn,
-		            in_fillmode, fillmode_btn, chkbox_group, step3_btn, out_json_file, next_btn, run_btn]
+		            in_fillmode, fillmode_btn, chkbox_group, step3_btn, out_json_file, next_btn]
 	).success(
 	    fn = None,
 	    js = init_js,
@@ -796,7 +796,7 @@ with gr.Blocks() as demo:
 	    fn = init_next_step,
 		inputs = [app_info_json, channel_info_json, in_fillmode, radio_group, chkbox_group],
 		outputs = [app_info_json, channel_info_json, desc_md, in_fillmode, fillmode_btn, chkbox_group, step3_btn,
-					out_json_file, next_btn, run_btn]
+					out_json_file, next_btn]
 	).success(
 	    fn = None,
 	    js = init_js,
@@ -819,6 +819,14 @@ with gr.Blocks() as demo:
 	# +========================================================================================+
 	# |                                  Stage2: decode data                                   |
 	# +========================================================================================+
+	@gr.on(triggers = [in_data_file.upload, in_data_file.clear, in_samplerate.change, out_json_file.change],
+			inputs = [app_info_json, in_data_file, in_samplerate], outputs = run_btn)
+	def check_input2(app_info, in_data, samplerate):
+		if app_info["stage1"]["state"]=="finished" and in_data!=None and samplerate!="":
+			return gr.Button(interactive=True)
+		else:
+			return gr.Button(interactive=False)
+	
 	def reset_run(app_info, in_data, samplerate, modelname):
 		stage1_info = app_info["stage1"]
 		stage2_info = app_info["stage2"]