Adjust initial activation/focus Task Manager/Views TableView.

ui/views/controls/table/table_view_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/table/table_view.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 1005 matching lines @@
   ui::ListSelectionModel new_selection;
   new_selection.AddIndexToSelection(0);
   new_selection.AddIndexToSelection(1);
   new_selection.set_active(0);
   new_selection.set_anchor(0);
   helper_->SetSelectionModel(new_selection);
   model_->RemoveRow(0);
   helper_->OnFocus();
 }
 
+// Tests that focusing the table will activate the first row, but only if
+// there's no active row.
+TEST_F(TableViewTest, InitialFocusActivatesFirstRow) {
+  EXPECT_EQ(-1, table_->selection_model().active());
+  helper_->OnFocus();
+  EXPECT_EQ(0, table_->selection_model().active());
+
+  ui::ListSelectionModel new_selection;
+  new_selection.set_active(1);
+  helper_->SetSelectionModel(new_selection);
+  EXPECT_EQ(1, table_->selection_model().active());
+  helper_->OnFocus();
+  EXPECT_EQ(1, table_->selection_model().active());
+
+  // Remove all rows; focusing should not activate a non existent first row.
+  while (model_->RowCount())
+    model_->RemoveRow(0);
+
+  new_selection.set_active(-1);
+  helper_->SetSelectionModel(new_selection);
+  helper_->OnFocus();
+  EXPECT_EQ(-1, table_->selection_model().active());
+}
+
 }  // namespace views