added file explorer

infer-web.py

@@ -1,6 +1,7 @@
 import os
 import sys
 from dotenv import load_dotenv
+from pathlib import Path
 
 now_dir = os.getcwd()
 sys.path.append(now_dir)
@@ -1595,6 +1596,18 @@ with gr.Blocks(title="RVC WebUI") as app:
                 export_onnx, [ckpt_dir, onnx_dir], infoOnnx, api_name="export_onnx"
             )
 
+        with gr.TabItem("File Explorer"):
+            gr.Markdown('### `FileExplorer` to `FileExplorer` -- `file_count="single"`')
+            submit_btn = gr.Button("Select")
+            with gr.Row():
+                def file_changing(x):
+                    name = Path(x).name
+                    return gr.DownloadButton(label=f"Download {name}", value=name, visible=True)
+                file = gr.FileExplorer(file_count='single')
+                download_button = gr.DownloadButton(label=f"Download", visible=False)
+                file.change(file_changing, file, download_button)
+
+
         tab_faq = i18n("常见问题解答")
         with gr.TabItem(tab_faq):
             try: