wip: Second crack at implementing the touch exploration mode.

chrome/browser/chromeos/accessibility/touch_exploration_controller_browsertest.cc

+// Copyright (c) 2014 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/chromeos/touch_exploration_controller.h"
+
+#include "ash/accessibility_delegate.h"
+#include "ash/shell.h"
+#include "ash/test/ash_test_base.h"
+#include "base/time/time.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "ui/aura/test/event_generator.h"
+#include "ui/events/event.h"
+#include "ui/events/event_utils.h"
+#include "ui/events/test/test_event_handler.h"
+#include "ui/gfx/geometry/point.h"
+
+namespace ui {
+
+class TouchExplorationTest : public InProcessBrowserTest {
+ public:
+  TouchExplorationTest() {}
+  virtual ~TouchExplorationTest() {}
+
+ protected:
+  void SwitchTouchExplorationMode(bool on) {
+    ash::AccessibilityDelegate* ad =
+        ash::Shell::GetInstance()->accessibility_delegate();
+    if (on != ad->IsSpokenFeedbackEnabled())
+      ad->ToggleSpokenFeedback(ash::A11Y_NOTIFICATION_NONE);
+  }
+
+private:
+  DISALLOW_COPY_AND_ASSIGN(TouchExplorationTest);
+};
+
+// This test turns the touch exploration mode on/off and confirms that events
+// get rewritten when the touch exploration mode is on, and aren't affected
+// after the touch exploration mode is turned off.
+IN_PROC_BROWSER_TEST_F(TouchExplorationTest, ToggleOnOff) {
+  ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
+      browser(),
+      GURL("http://www.google.com/"),
+      1);
+  scoped_ptr<ui::test::TestEventHandler>
+      event_handler(new ui::test::TestEventHandler());
+  aura::Window* root_window = ash::Shell::GetInstance()->GetPrimaryRootWindow();
+  root_window->AddPreTargetHandler(event_handler.get());
+  SwitchTouchExplorationMode(true);
+  aura::test::EventGenerator generator(root_window);
+  aura::client::CursorClient* cursor_client =
+      aura::client::GetCursorClient(root_window);
+
+  generator.PressTouchId(1);
+  // Number of mouse events may be greater than 1 because of ET_MOUSE_ENTERED.
+  EXPECT_GT(event_handler->num_mouse_events(), 0);
+  EXPECT_EQ(event_handler->num_touch_events(), 0);
+  EXPECT_FALSE(cursor_client->IsCursorVisible());
+  event_handler->Reset();
+
+  SwitchTouchExplorationMode(false);
+  generator.MoveTouchId(gfx::Point(11, 12), 1);
+  EXPECT_EQ(event_handler->num_mouse_events(), 0);
+  EXPECT_EQ(event_handler->num_touch_events(), 1);
+  event_handler->Reset();
+
+  SwitchTouchExplorationMode(true);
+  generator.PressTouchId(2);
+  EXPECT_GT(event_handler->num_mouse_events(), 0);
+  EXPECT_EQ(event_handler->num_touch_events(), 0);
+
+  SwitchTouchExplorationMode(false);
+  root_window->RemovePreTargetHandler(event_handler.get());
+}
+
+}  // namespace ui