Indicate filtering in trust file count (#839)

Trust file list count indicator will now display `X / total` when `0 > X < total`.

Closes #803

fapolicy_analyzer/tests/test_trust_file_list.py

@@ -119,3 +119,52 @@ def test_epoch_to_string():
 
     # Verify a NULL string input outputs "Missing"
     assert epoch_to_string(None) == "Missing"
+
+
+def test_tree_count_full(widget, mocker):
+    mocker.patch(
+        "fapolicy_analyzer.ui.trust_file_list.ThreadPoolExecutor",
+        return_value=MagicMock(submit=lambda x: x()),
+    )
+    mocker.patch(
+        "fapolicy_analyzer.ui.trust_file_list.GLib.idle_add",
+        side_effect=lambda x, args: x(args),
+    )
+    widget.init_list(2)
+    widget.append_trust(_trust)
+    refresh_gui(delay=0.5)
+    assert widget.treeCount.get_text() == "2  files"
+
+
+def test_tree_count_empty(widget, mocker):
+    mocker.patch(
+        "fapolicy_analyzer.ui.trust_file_list.ThreadPoolExecutor",
+        return_value=MagicMock(submit=lambda x: x()),
+    )
+    mocker.patch(
+        "fapolicy_analyzer.ui.trust_file_list.GLib.idle_add",
+        side_effect=lambda x, args: x(args),
+    )
+    widget.init_list(0)
+    widget.append_trust([])
+    refresh_gui(delay=0.5)
+    assert widget.treeCount.get_text() == "0  files"
+
+
+def test_tree_count_partial(widget, mocker):
+    mocker.patch(
+        "fapolicy_analyzer.ui.trust_file_list.ThreadPoolExecutor",
+        return_value=MagicMock(submit=lambda x: x()),
+    )
+    mocker.patch(
+        "fapolicy_analyzer.ui.trust_file_list.GLib.idle_add",
+        side_effect=lambda x, args: x(args),
+    )
+    widget.init_list(2)
+    widget.append_trust(_trust)
+    refresh_gui(delay=0.5)
+    viewFilter = widget.get_object("search")
+    viewFilter.set_text("foo")
+    widget.on_search_activate()
+    refresh_gui(delay=0.3)
+    assert widget.treeCount.get_text() == "1 / 2 files"

fapolicy_analyzer/ui/trust_file_list.py

@@ -75,6 +75,7 @@ def __init__(self, trust_func, markup_func=None, *args):
         self.refresh()
         self.selection_changed += self.__handle_selection_changed
         self.get_ref().connect("destroy", self.on_destroy)
+        self.total = 0
 
     def __handle_selection_changed(self, data):
         trust = [datum[3] for datum in data] if data else None
@@ -117,8 +118,9 @@ def txt_color_func(col, renderer, model, iter, *args):
         return [trustColumn, mtimeColumn, fileColumn]
 
     def _update_list_status(self, count):
-        label = FILE_LABEL if count == 1 else FILES_LABEL
-        super()._update_list_status(" ".join([str(count), label]))
+        label = FILE_LABEL if self.total == 1 else FILES_LABEL
+        denom_str = "" if count == 0 or count == self.total else " ".join(["/", str(self.total)])
+        super()._update_list_status(" ".join([str(count), denom_str, label]))
 
     def _update_loading_status(self, status):
         super()._update_list_status(status)
@@ -178,6 +180,7 @@ def process_rows(queue, total):
         self.search.set_sensitive(False)
         self.search.set_tooltip_text(FILTERING_DISABLED_DURING_LOADING_MESSAGE)
         self.__queue = Queue()
+        self.total = count_of_trust_entries
         GLib.timeout_add(200, process_rows, self.__queue, count_of_trust_entries)
 
     def append_trust(self, trust):