Support Batch Delete of sources: Provide pyqtSignal and Slot for tool…

…bar to request and receive updated list of selected sources from sourcelist. Change list selection method of SourceList to allow for multi-select.

Add support for multi-source selection. Add multi-source view pane in the conversationview.
Add styled icon, adjust button and sourcelist selector color to match EmptyConversationView color.

Use a QStackedLayout for the Conversation Pane views instead of hiding, showing, and deleting child widgets.
Update functional and integration tests to reflect new MainView QStackedLayout.
Improve delete sources explanation text and extract strings.

client/securedrop_client/gui/actions.py

@@ -93,7 +93,7 @@ def __init__(
         # but when triggered from this menu, only applies to one source
         self._confirmation_dialog = confirmation_dialog(set([self.source]))
         self._confirmation_dialog.accepted.connect(
-            lambda: self.controller.delete_source(self.source)
+            lambda: self.controller.delete_sources(set([self.source]))
         )
         self.triggered.connect(self.trigger)
 

client/securedrop_client/gui/main.py

@@ -29,7 +29,7 @@
 from securedrop_client.db import Source, User
 from securedrop_client.gui.auth import LoginDialog
 from securedrop_client.gui.shortcuts import Shortcuts
-from securedrop_client.gui.widgets import BottomPane, InnerTopPane, LeftPane, MainView
+from securedrop_client.gui.widgets import BottomPane, LeftPane, MainView
 from securedrop_client.logic import Controller
 from securedrop_client.resources import load_all_fonts, load_css, load_icon
 
@@ -63,11 +63,6 @@ def __init__(
         self.setWindowTitle(_("SecureDrop Client {}").format(__version__))
         self.setWindowIcon(load_icon(self.icon))
 
-        # Top Pane to hold batch actions, eventually will also hold
-        # search bar for keyword filtering. The Top Pane is not a top-level
-        # layout element, but instead is nested inside the central widget view.
-        self.top_pane = InnerTopPane()
-
         # Bottom Pane to display activity and error messages
         self.bottom_pane = BottomPane()
 
@@ -80,6 +75,7 @@ def __init__(
         self.main_pane.setLayout(layout)
         self.left_pane = LeftPane()
         self.main_view = MainView(self.main_pane, app_state)
+
         layout.addWidget(self.left_pane)
         layout.addWidget(self.main_view)
 
@@ -109,10 +105,15 @@ def setup(self, controller: Controller) -> None:
         views used in the UI.
         """
         self.controller = controller
-        self.top_pane.setup(self.controller)
         self.bottom_pane.setup(self.controller)
         self.left_pane.setup(self, self.controller)
         self.main_view.setup(self.controller)
+
+        # Listen for changes to the selected sources in sourcelist
+        self.main_view.source_list.selected_sources.connect(
+            self.controller.on_receive_selected_sources
+        )
+
         self.show_login()
 
     def show_main_window(self, db_user: User | None = None) -> None:
@@ -190,13 +191,15 @@ def set_logged_in_as(self, db_user: User) -> None:
         """
         self.left_pane.set_logged_in_as(db_user)
         self.bottom_pane.set_logged_in()
+        self.main_view.set_logged_in()
 
     def logout(self) -> None:
         """
         Update the UI to show the user is logged out.
         """
         self.left_pane.set_logged_out()
         self.bottom_pane.set_logged_out()
+        self.main_view.set_logged_out()
 
     def update_sync_status(self, message: str, duration: int = 0) -> None:
         """