MacViews: Add WidgetEventGenerator to abstract platform-specific event generation for tests.

ui/views/test/widget_event_generator_mac.h

+// Copyright 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.
+
+#ifndef UI_VIEWS_TEST_WIDGET_EVENT_GENERATOR_MAC_H_
+#define UI_VIEWS_TEST_WIDGET_EVENT_GENERATOR_MAC_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "ui/base/test/event_generator_base.h"
+#include "ui/gfx/geometry/point.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace base {
+class TimeDelta;
+}
+
+namespace views {
+namespace test {
+
+// Encapsulates event generation for an NSWindow. Implements the parts of the
+// interface provided by aura::test::EventGenerator that are used for cross-
+// platform toolkit-views tests. Only a single window is supported.
+class WidgetEventGeneratorMac : public ui::test::EventGeneratorBase {
+ public:
+  explicit WidgetEventGeneratorMac(gfx::NativeWindow ns_window);
+  virtual ~WidgetEventGeneratorMac();
+
+  void GestureTapAt(const gfx::Point& point);
+  void GestureScrollSequence(const gfx::Point& start,
+                             const gfx::Point& end,
+                             const base::TimeDelta& duration,
+                             int steps);
+  void GestureMultiFingerScroll(int count,
+                                const gfx::Point start[],
+                                int event_separation_time_ms,
+                                int steps,
+                                int move_x,
+                                int move_y);
+
+ protected:
+  // Overridden from EventGeneratorBase:
+  virtual gfx::Point GetLocationInCurrentRoot() const OVERRIDE;
+  virtual void DoMoveMouseTo(const gfx::Point& point_in_screen,
+                             int count) OVERRIDE;
+  virtual void DispatchMouseEvent(ui::EventType type,
+                                  const gfx::Point& location_in_root,
+                                  int flags,
+                                  int changed_button_flags) OVERRIDE;
+
+ private:
+  class Impl;
+
+  // Platform specific things, so that this file can be included in .cc files.
+  scoped_ptr<Impl> impl_;
+
+  gfx::NativeWindow ns_window_;
+
+  DISALLOW_COPY_AND_ASSIGN(WidgetEventGeneratorMac);
+};
+
+}  // namespace test
+}  // namespace views
+
+#endif  // UI_VIEWS_TEST_WIDGET_EVENT_GENERATOR_MAC_H_