Collapse remote backend tabs into a single Transfer tab

The six remote backend tabs (HTTP, Google Drive, S3, Azure Blob,
Dropbox, SFTP) now live behind a shared sidebar inside a new
Transfer tab. The outer tab bar shrinks from nine entries to four
— Local, Transfer, JSON actions, Servers — while the existing
per-backend widgets are reused unchanged so feature parity holds.

Author: JE-Chen

automation_file/ui/main_window.py

@@ -8,15 +8,10 @@
 from automation_file.logging_config import file_automation_logger
 from automation_file.ui.log_widget import LogPanel
 from automation_file.ui.tabs import (
-    AzureBlobTab,
-    DropboxTab,
-    GoogleDriveTab,
-    HTTPDownloadTab,
     JSONEditorTab,
     LocalOpsTab,
-    S3Tab,
     ServerTab,
-    SFTPTab,
+    TransferTab,
 )
 
 _WINDOW_TITLE = "automation_file"
@@ -36,12 +31,7 @@ def __init__(self) -> None:
 
         tabs = QTabWidget()
         tabs.addTab(LocalOpsTab(self._log, self._pool), "Local")
-        tabs.addTab(HTTPDownloadTab(self._log, self._pool), "HTTP")
-        tabs.addTab(GoogleDriveTab(self._log, self._pool), "Google Drive")
-        tabs.addTab(S3Tab(self._log, self._pool), "S3")
-        tabs.addTab(AzureBlobTab(self._log, self._pool), "Azure Blob")
-        tabs.addTab(DropboxTab(self._log, self._pool), "Dropbox")
-        tabs.addTab(SFTPTab(self._log, self._pool), "SFTP")
+        tabs.addTab(TransferTab(self._log, self._pool), "Transfer")
         tabs.addTab(JSONEditorTab(self._log, self._pool), "JSON actions")
         self._server_tab = ServerTab(self._log, self._pool)
         tabs.addTab(self._server_tab, "Servers")

automation_file/ui/tabs/__init__.py

@@ -11,6 +11,7 @@
 from automation_file.ui.tabs.s3_tab import S3Tab
 from automation_file.ui.tabs.server_tab import ServerTab
 from automation_file.ui.tabs.sftp_tab import SFTPTab
+from automation_file.ui.tabs.transfer_tab import TransferTab
 
 __all__ = [
     "AzureBlobTab",
@@ -22,4 +23,5 @@
     "S3Tab",
     "SFTPTab",
     "ServerTab",
+    "TransferTab",
 ]

automation_file/ui/tabs/transfer_tab.py

@@ -0,0 +1,81 @@
+"""Unified transfer tab — sidebar of remote backends over one stack.
+
+Collapses the six remote-backend tabs (HTTP, Google Drive, S3, Azure
+Blob, Dropbox, SFTP) into a single tab with a sidebar picker. The
+existing per-backend widgets are reused verbatim as the stack pages
+so feature parity is preserved.
+"""
+
+from __future__ import annotations
+
+from typing import NamedTuple
+
+from PySide6.QtCore import QThreadPool
+from PySide6.QtWidgets import (
+    QHBoxLayout,
+    QListWidget,
+    QListWidgetItem,
+    QStackedWidget,
+    QWidget,
+)
+
+from automation_file.ui.log_widget import LogPanel
+from automation_file.ui.tabs.azure_tab import AzureBlobTab
+from automation_file.ui.tabs.base import BaseTab
+from automation_file.ui.tabs.drive_tab import GoogleDriveTab
+from automation_file.ui.tabs.dropbox_tab import DropboxTab
+from automation_file.ui.tabs.http_tab import HTTPDownloadTab
+from automation_file.ui.tabs.s3_tab import S3Tab
+from automation_file.ui.tabs.sftp_tab import SFTPTab
+
+
+class _BackendEntry(NamedTuple):
+    label: str
+    factory: type[BaseTab]
+
+
+_BACKENDS: tuple[_BackendEntry, ...] = (
+    _BackendEntry("HTTP download", HTTPDownloadTab),
+    _BackendEntry("Google Drive", GoogleDriveTab),
+    _BackendEntry("Amazon S3", S3Tab),
+    _BackendEntry("Azure Blob", AzureBlobTab),
+    _BackendEntry("Dropbox", DropboxTab),
+    _BackendEntry("SFTP", SFTPTab),
+)
+
+
+class TransferTab(BaseTab):
+    """Sidebar-selectable container for every remote backend."""
+
+    def __init__(self, log: LogPanel, pool: QThreadPool) -> None:
+        super().__init__(log, pool)
+        self._sidebar = QListWidget()
+        self._sidebar.setFixedWidth(180)
+        self._stack = QStackedWidget()
+        for entry in _BACKENDS:
+            self._sidebar.addItem(QListWidgetItem(entry.label))
+            self._stack.addWidget(entry.factory(log, pool))
+        self._sidebar.currentRowChanged.connect(self._stack.setCurrentIndex)
+        self._sidebar.setCurrentRow(0)
+
+        root = QHBoxLayout(self)
+        root.setContentsMargins(0, 0, 0, 0)
+        root.addWidget(self._sidebar)
+        root.addWidget(self._stack, 1)
+
+    def current_backend(self) -> str:
+        row = self._sidebar.currentRow()
+        return _BACKENDS[row].label if 0 <= row < len(_BACKENDS) else ""
+
+    def select_backend(self, label: str) -> bool:
+        for index, entry in enumerate(_BACKENDS):
+            if entry.label == label:
+                self._sidebar.setCurrentRow(index)
+                return True
+        return False
+
+    def inner_widget(self, label: str) -> QWidget | None:
+        for index, entry in enumerate(_BACKENDS):
+            if entry.label == label:
+                return self._stack.widget(index)
+        return None

docs/source/api/ui.rst

@@ -59,6 +59,9 @@ Tabs
 .. automodule:: automation_file.ui.tabs.sftp_tab
    :members:
 
+.. automodule:: automation_file.ui.tabs.transfer_tab
+   :members:
+
 .. automodule:: automation_file.ui.tabs.json_editor_tab
    :members:
 

tests/test_ui_smoke.py

@@ -53,6 +53,7 @@ def test_main_window_constructs(qt_app) -> None:
         "SFTPTab",
         "JSONEditorTab",
         "ServerTab",
+        "TransferTab",
     ],
 )
 def test_each_tab_constructs(qt_app, tab_name: str) -> None: