Send mouse exited event after mouse release outside view.

ui/views/widget/widget_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 <algorithm>
 #include <memory>
 #include <set>
 
 #include "base/bind.h"
 #include "base/macros.h"
@@ skipping 3609 matching lines @@
   EXPECT_FALSE(removals_observer.DidRemoveView(child));
 
   // Moving the child to a different widget should call the removals observer.
   WidgetAutoclosePtr widget2(CreateTopLevelPlatformWidget());
   widget2->client_view()->AddChildView(child);
   EXPECT_TRUE(removals_observer.DidRemoveView(child));
 
   widget->RemoveRemovalsObserver(&removals_observer);
 }
 
+// Tests that we don't get Exited notification when we're handling the dragging
+// operation. When we stop the drag outside of Widget's bounds we should get the
+// Exited notification when the mouse capture will be released.
+TEST_F(WidgetTest, MouseExitOnMouseReleaseOutsideView) {
+  Widget* widget = CreateTopLevelNativeWidget();
+  widget->SetBounds(gfx::Rect(0, 0, 300, 300));
+  EventCountView* mock_view = new EventCountView();
+  widget->GetContentsView()->AddChildView(mock_view);
+  mock_view->SetBounds(0, 0, 300, 300);
+  widget->Show();
+
+  // Use an event generator to ask views code to set the cursor. However, note
+  // that this does not cause Cocoa to generate tracking rectangle updates.
+  ui::test::EventGenerator event_generator(GetContext(),
+                                           widget->GetNativeWindow());
+
+  event_generator.MoveMouseTo(gfx::Point(50, 50));
+  EXPECT_EQ(1, mock_view->GetEventCount(ui::ET_MOUSE_ENTERED));
+  EXPECT_EQ(1, mock_view->GetEventCount(ui::ET_MOUSE_MOVED));
+  mock_view->ResetCounts();
+
+
+  mock_view->set_handle_mode(EventCountView::CONSUME_EVENTS);
+  event_generator.PressLeftButton();
+  EXPECT_EQ(1, mock_view->GetEventCount(ui::ET_MOUSE_PRESSED));
+  mock_view->set_handle_mode(EventCountView::PROPAGATE_EVENTS);
+  mock_view->ResetCounts();
+
+  EXPECT_TRUE(widget->HasCapture());
+
+  mock_view->set_handle_mode(EventCountView::CONSUME_EVENTS);
+  event_generator.MoveMouseTo(gfx::Point(-50, -50));
+  // The mouse exited event should not be received, if we have capture.
+  EXPECT_EQ(0, mock_view->GetEventCount(ui::ET_MOUSE_EXITED));
+  EXPECT_EQ(1, mock_view->GetEventCount(ui::ET_MOUSE_DRAGGED));
+  mock_view->set_handle_mode(EventCountView::PROPAGATE_EVENTS);
+  mock_view->ResetCounts();
+
+  event_generator.ReleaseLeftButton();
+  EXPECT_EQ(1, mock_view->GetEventCount(ui::ET_MOUSE_RELEASED));
+  // The mouse exited event should be received, after mouse released
+  // outside view bounds.
+  EXPECT_EQ(1, mock_view->GetEventCount(ui::ET_MOUSE_EXITED));
+  mock_view->ResetCounts();
+
+  EXPECT_FALSE(widget->HasCapture());
+
+  widget->CloseNow();
+}
+
 #if defined(OS_WIN)
 
 namespace {
 
 // Provides functionality to create a window modal dialog.
 class ModalDialogDelegate : public DialogDelegateView {
 public:
   explicit ModalDialogDelegate(ui::ModalType type) : type_(type) {}
   ~ModalDialogDelegate() override {}
 
@@ skipping 187 matching lines @@
     Transparency_DesktopWidgetTranslucent
 #endif
 TEST_F(CompositingWidgetTest, MAYBE_Transparency_DesktopWidgetTranslucent) {
   CheckAllWidgetsForOpacity(Widget::InitParams::TRANSLUCENT_WINDOW);
 }
 
 #endif  // !defined(OS_CHROMEOS)
 
 }  // namespace test
 }  // namespace views