| // 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. |
| |
| #include "ui/views/event_monitor.h" |
| |
| #include <utility> |
| |
| #include "base/macros.h" |
| #include "ui/events/event_observer.h" |
| #include "ui/events/test/event_generator.h" |
| #include "ui/views/test/widget_test.h" |
| #include "ui/views/widget/widget_utils.h" |
| |
| #if defined(USE_AURA) |
| #include "ui/aura/window.h" |
| #endif |
| |
| namespace views { |
| namespace test { |
| |
| // A simple event observer that records the number of events. |
| class TestEventObserver : public ui::EventObserver { |
| public: |
| TestEventObserver() = default; |
| ~TestEventObserver() override = default; |
| |
| // ui::EventObserver: |
| void OnEvent(const ui::Event& event) override { ++observed_event_count_; } |
| |
| size_t observed_event_count() const { return observed_event_count_; } |
| |
| private: |
| size_t observed_event_count_ = 0; |
| |
| DISALLOW_COPY_AND_ASSIGN(TestEventObserver); |
| }; |
| |
| class EventMonitorTest : public WidgetTest { |
| public: |
| EventMonitorTest() = default; |
| |
| // testing::Test: |
| void SetUp() override { |
| WidgetTest::SetUp(); |
| widget_ = CreateTopLevelNativeWidget(); |
| widget_->SetSize(gfx::Size(100, 100)); |
| widget_->Show(); |
| generator_ = std::make_unique<ui::test::EventGenerator>( |
| GetContext(), widget_->GetNativeWindow()); |
| generator_->set_target(ui::test::EventGenerator::Target::APPLICATION); |
| } |
| void TearDown() override { |
| widget_->CloseNow(); |
| WidgetTest::TearDown(); |
| } |
| |
| protected: |
| Widget* widget_ = nullptr; |
| std::unique_ptr<ui::test::EventGenerator> generator_; |
| TestEventObserver observer_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(EventMonitorTest); |
| }; |
| |
| TEST_F(EventMonitorTest, ShouldReceiveAppEventsWhileInstalled) { |
| std::unique_ptr<EventMonitor> monitor(EventMonitor::CreateApplicationMonitor( |
| &observer_, widget_->GetNativeWindow(), |
| {ui::ET_MOUSE_PRESSED, ui::ET_MOUSE_RELEASED})); |
| |
| generator_->ClickLeftButton(); |
| EXPECT_EQ(2u, observer_.observed_event_count()); |
| |
| monitor.reset(); |
| generator_->ClickLeftButton(); |
| EXPECT_EQ(2u, observer_.observed_event_count()); |
| } |
| |
| TEST_F(EventMonitorTest, ShouldReceiveWindowEventsWhileInstalled) { |
| std::unique_ptr<EventMonitor> monitor(EventMonitor::CreateWindowMonitor( |
| &observer_, widget_->GetNativeWindow(), |
| {ui::ET_MOUSE_PRESSED, ui::ET_MOUSE_RELEASED})); |
| |
| generator_->ClickLeftButton(); |
| EXPECT_EQ(2u, observer_.observed_event_count()); |
| |
| monitor.reset(); |
| generator_->ClickLeftButton(); |
| EXPECT_EQ(2u, observer_.observed_event_count()); |
| } |
| |
| TEST_F(EventMonitorTest, ShouldNotReceiveEventsFromOtherWindow) { |
| Widget* widget2 = CreateTopLevelNativeWidget(); |
| std::unique_ptr<EventMonitor> monitor(EventMonitor::CreateWindowMonitor( |
| &observer_, widget2->GetNativeWindow(), |
| {ui::ET_MOUSE_PRESSED, ui::ET_MOUSE_RELEASED})); |
| |
| generator_->ClickLeftButton(); |
| EXPECT_EQ(0u, observer_.observed_event_count()); |
| |
| monitor.reset(); |
| widget2->CloseNow(); |
| } |
| |
| TEST_F(EventMonitorTest, ShouldOnlyReceiveRequestedEventTypes) { |
| // This event monitor only listens to mouse press, not release. |
| std::unique_ptr<EventMonitor> monitor(EventMonitor::CreateWindowMonitor( |
| &observer_, widget_->GetNativeWindow(), {ui::ET_MOUSE_PRESSED})); |
| |
| generator_->ClickLeftButton(); |
| EXPECT_EQ(1u, observer_.observed_event_count()); |
| |
| monitor.reset(); |
| } |
| |
| TEST_F(EventMonitorTest, WindowMonitorTornDownOnWindowClose) { |
| Widget* widget2 = CreateTopLevelNativeWidget(); |
| widget2->Show(); |
| |
| std::unique_ptr<EventMonitor> monitor(EventMonitor::CreateWindowMonitor( |
| &observer_, widget2->GetNativeWindow(), {ui::ET_MOUSE_PRESSED})); |
| |
| // Closing the widget before destroying the monitor should not crash. |
| widget2->CloseNow(); |
| monitor.reset(); |
| } |
| |
| namespace { |
| class DeleteOtherOnEventObserver : public ui::EventObserver { |
| public: |
| explicit DeleteOtherOnEventObserver(gfx::NativeWindow context) { |
| monitor_ = EventMonitor::CreateApplicationMonitor( |
| this, context, {ui::ET_MOUSE_PRESSED, ui::ET_MOUSE_RELEASED}); |
| } |
| |
| bool DidDelete() const { return !observer_to_delete_; } |
| |
| void set_monitor_to_delete( |
| std::unique_ptr<DeleteOtherOnEventObserver> observer_to_delete) { |
| observer_to_delete_ = std::move(observer_to_delete); |
| } |
| |
| // ui::EventObserver: |
| void OnEvent(const ui::Event& event) override { |
| observer_to_delete_ = nullptr; |
| } |
| |
| private: |
| std::unique_ptr<EventMonitor> monitor_; |
| std::unique_ptr<DeleteOtherOnEventObserver> observer_to_delete_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeleteOtherOnEventObserver); |
| }; |
| } // namespace |
| |
| // Ensure correct behavior when an event monitor is removed while iterating |
| // over the OS-controlled observer list. |
| TEST_F(EventMonitorTest, TwoMonitors) { |
| gfx::NativeWindow window = widget_->GetNativeWindow(); |
| auto deleter = std::make_unique<DeleteOtherOnEventObserver>(window); |
| auto deletee = std::make_unique<DeleteOtherOnEventObserver>(window); |
| deleter->set_monitor_to_delete(std::move(deletee)); |
| |
| EXPECT_FALSE(deleter->DidDelete()); |
| generator_->PressLeftButton(); |
| EXPECT_TRUE(deleter->DidDelete()); |
| |
| // Now try setting up observers in the alternate order. |
| deletee = std::make_unique<DeleteOtherOnEventObserver>(window); |
| deleter = std::make_unique<DeleteOtherOnEventObserver>(window); |
| deleter->set_monitor_to_delete(std::move(deletee)); |
| |
| EXPECT_FALSE(deleter->DidDelete()); |
| generator_->ReleaseLeftButton(); |
| EXPECT_TRUE(deleter->DidDelete()); |
| } |
| |
| } // namespace test |
| } // namespace views |