Adding widget RemoteFileSelector

examples/reference/widgets/RemoteFileSelector.ipynb

@@ -0,0 +1,39 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import panel as pn\n",
+    "pn.extension()"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "The ``RemoteFileSelector`` widget allows browsing a distant filesystem and selecting one or more files in a directory.\n",
+    "\n",
+    "A ``RemoteFileSelector`` always relies on a ``RemoteFileProvider``, that is responsible for fetching data from the distant filesystem, handling the connection. The ``RemoteFileSelector`` is responsible for showing the distant filesystem and allow for a selection of files. Its behavior is similar to ``FileSelector``\n",
+    "\n",
+    "\n",
+    "#### Parameters:\n",
+    "\n",
+    "// TODO\n",
+    "\n",
+    "\n",
+    "___"
+   ]
+  }
+ ],
+ "metadata": {
+  "language_info": {
+   "name": "python",
+   "pygments_lexer": "ipython3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}

panel/tests/widgets/test_remote_file_selector.py

@@ -0,0 +1,20 @@
+# to fake delays in DummyRemoteFileProvider
+import time
+
+from pathlib import PurePosixPath
+
+from panel.widgets import RemoteFileProvider
+
+
+class DummyRemoteFileProvider(RemoteFileProvider):
+
+    def __init__(self):
+        super().__init__()
+
+    async def ls(self, path:PurePosixPath):
+        time.sleep(1)
+        if str(path) == '/':
+            return [f'dir_{l}' for l in 'ABCDEF' ], [f'file_{n}' for n in '123456' ]
+        else:
+            last_letter = path.parts[-1].replace("dir_", "")
+            return [f'dir_{last_letter}{l}' for l in 'ABCDEF' ], [f'file_{last_letter + n}' for n in '123456' ]

panel/widgets/__init__.py

@@ -51,6 +51,9 @@
 )
 from .misc import FileDownload, JSONEditor, VideoStream  # noqa
 from .player import DiscretePlayer, Player  # noqa
+from .remote_file_selector import (  # noqa
+    RemoteFileProvider, RemoteFileSelector, S3RemoteFileProvider,
+)
 from .select import (  # noqa
     AutocompleteInput, CheckBoxGroup, CheckButtonGroup, ColorMap,
     CrossSelector, MultiChoice, MultiSelect, NestedSelect, RadioBoxGroup,
@@ -127,6 +130,7 @@
     "RadioBoxGroup",
     "RadioButtonGroup",
     "RangeSlider",
+    "RemoteFileSelector",
     "Select",
     "SpeechToText",
     "Spinner",