mus: Add watcher for all touch events.

ui/views/mus/window_manager_connection_unittest.cc

 // Copyright 2016 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/mus/window_manager_connection.h"
 
 #include <memory>
 
 #include "base/message_loop/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/events/event.h"
 #include "ui/views/pointer_watcher.h"
 #include "ui/views/test/scoped_views_test_helper.h"
+#include "ui/views/touch_event_watcher.h"
 
 namespace views {
 namespace {
 
 class TestPointerWatcher : public PointerWatcher {
  public:
   TestPointerWatcher() {}
   ~TestPointerWatcher() override {}
 
   bool mouse_pressed() const { return mouse_pressed_; }
@@ skipping 18 matching lines @@
 
  private:
   bool mouse_pressed_ = false;
   bool touch_pressed_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(TestPointerWatcher);
 };
 
 }  // namespace
 
+namespace {
+
+class TestTouchEventWatcher : public TouchEventWatcher {
+ public:
+  TestTouchEventWatcher() {}
+  ~TestTouchEventWatcher() override {}
+
+  bool touch_observed() const { return touch_observed_; }
+
+  void Reset() { touch_observed_ = false; }
+
+  // TouchEventWatcher:
+  void OnTouchEventObserved(const ui::LocatedEvent& event,
+                            Widget* target) override {
+    touch_observed_ = true;
+  }
+
+ private:
+  bool touch_observed_ = false;
+
+  DISALLOW_COPY_AND_ASSIGN(TestTouchEventWatcher);
+};
+
+}  // namespace
+
 class WindowManagerConnectionTest : public testing::Test {
  public:
   WindowManagerConnectionTest() {}
   ~WindowManagerConnectionTest() override {}
 
   void OnEventObserved(const ui::Event& event) {
     WindowManagerConnection::Get()->OnEventObserved(event, nullptr);
   }
 
  private:
@@ skipping 46 matching lines @@
   watcher1.Reset();
   watcher2.Reset();
 
   // Removing the last PointerWatcher stops sending events to it.
   connection->RemovePointerWatcher(&watcher2);
   OnEventObserved(mouse_pressed);
   EXPECT_FALSE(watcher1.mouse_pressed());
   EXPECT_FALSE(watcher1.touch_pressed());
 }
 
+TEST_F(WindowManagerConnectionTest, TouchEventWatcher) {
+  base::MessageLoop message_loop(base::MessageLoop::TYPE_UI);
+  ScopedViewsTestHelper helper;
+  WindowManagerConnection* connection = WindowManagerConnection::Get();
+  ASSERT_TRUE(connection);
+
+  const ui::EventType kMouseType[] = {
+      ui::ET_MOUSE_PRESSED, ui::ET_MOUSE_DRAGGED, ui::ET_MOUSE_MOVED,
+      ui::ET_MOUSE_ENTERED, ui::ET_MOUSE_EXITED,  ui::ET_MOUSE_RELEASED};
+  const ui::EventType kTouchType[] = {ui::ET_TOUCH_PRESSED, ui::ET_TOUCH_MOVED,
+                                      ui::ET_TOUCH_RELEASED,
+                                      ui::ET_TOUCH_CANCELLED};
+
+  TestTouchEventWatcher watcher1;
+  connection->AddTouchEventWatcher(&watcher1);
+
+  // TouchEventWatchers do not trigger for mouse events.
+  for (size_t i = 0; i < arraysize(kMouseType); i++) {
+    ui::MouseEvent mouse_event(kMouseType[i], gfx::Point(0, 0),

[msw, 2016/07/12 22:23:11]

nit: use default gfx::Point ctor here and elsewhere.

[riajiang, 2016/07/13 15:40:21]

Done.

+                               gfx::Point(0, 0), base::TimeTicks(), 0, 0);
+    ui::PointerEvent mouse_pointer_event(mouse_event);
+    EXPECT_TRUE(mouse_pointer_event.IsMousePointerEvent());
+    OnEventObserved(mouse_pointer_event);
+    EXPECT_FALSE(watcher1.touch_observed());
+    watcher1.Reset();
+  }
+
+  // TouchEventWatchers receive both TouchEvent and TouchPointerEvent.
+  for (size_t i = 0; i < arraysize(kTouchType); i++) {
+    ui::TouchEvent touch_event(kTouchType[i], gfx::Point(0, 0), 0,
+                               base::TimeTicks());
+    EXPECT_TRUE(touch_event.IsTouchEvent());
+    OnEventObserved(touch_event);
+    EXPECT_TRUE(watcher1.touch_observed());
+    watcher1.Reset();
+
+    ui::PointerEvent touch_pointer_event(touch_event);
+    EXPECT_TRUE(touch_pointer_event.IsTouchPointerEvent());
+    OnEventObserved(touch_pointer_event);
+    EXPECT_TRUE(watcher1.touch_observed());
+    watcher1.Reset();
+  }
+
+  // Two TouchEventWatchers can both receive a single observed event.
+  TestTouchEventWatcher watcher2;
+  connection->AddTouchEventWatcher(&watcher2);
+  ui::TouchEvent touch_event(ui::ET_TOUCH_PRESSED, gfx::Point(0, 0), 0,
+                             base::TimeTicks());
+  ui::PointerEvent touch_pointer_event(touch_event);
+  OnEventObserved(touch_pointer_event);
+  EXPECT_TRUE(watcher1.touch_observed());
+  EXPECT_TRUE(watcher2.touch_observed());
+  watcher1.Reset();
+  watcher2.Reset();
+
+  // Removing the first TouchEventWatcher stops sending events to it.
+  connection->RemoveTouchEventWatcher(&watcher1);
+  OnEventObserved(touch_pointer_event);
+  EXPECT_FALSE(watcher1.touch_observed());
+  EXPECT_TRUE(watcher2.touch_observed());
+  watcher1.Reset();
+  watcher2.Reset();
+
+  // Removing the last TouchEventWatcher stops sending events to it.
+  connection->RemoveTouchEventWatcher(&watcher2);
+  OnEventObserved(touch_pointer_event);
+  EXPECT_FALSE(watcher1.touch_observed());
+  EXPECT_FALSE(watcher2.touch_observed());
+}
+
 }  // namespace views