Refactor and move ash independent nested accelerator code to ui/wm/core

ui/wm/core/nested_accelerator_controller_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 "ui/wm/core/nested_accelerator_controller.h"
+
+#include "base/bind.h"
+#include "base/event_types.h"
+#include "base/message_loop/message_loop.h"
+#include "ui/aura/test/aura_test_base.h"
+#include "ui/aura/test/test_windows.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_event_dispatcher.h"
+#include "ui/base/accelerators/accelerator.h"
+#include "ui/base/accelerators/accelerator.h"
+#include "ui/base/accelerators/accelerator_manager.h"
+#include "ui/events/event_constants.h"
+#include "ui/events/event_utils.h"
+#include "ui/events/platform/platform_event_dispatcher.h"
+#include "ui/events/platform/platform_event_source.h"
+#include "ui/events/platform/scoped_event_dispatcher.h"
+#include "ui/wm/core/nested_accelerator_delegate.h"
+#include "ui/wm/public/dispatcher_client.h"
+
+#if defined(USE_X11)
+#include <X11/Xlib.h>
+#include "ui/events/test/events_test_utils_x11.h"
+#endif  // USE_X11
+
+namespace wm {
+namespace test {
+
+namespace {
+
+class MockDispatcher : public ui::PlatformEventDispatcher {
+ public:
+  MockDispatcher() : num_key_events_dispatched_(0) {}
+
+  int num_key_events_dispatched() { return num_key_events_dispatched_; }
+
+ private:
+  // ui::PlatformEventDispatcher:
+  virtual bool CanDispatchEvent(const ui::PlatformEvent& event) OVERRIDE {
+    return true;
+  }
+  virtual uint32_t DispatchEvent(const ui::PlatformEvent& event) OVERRIDE {
+    if (ui::EventTypeFromNative(event) == ui::ET_KEY_RELEASED)
+      num_key_events_dispatched_++;
+    return ui::POST_DISPATCH_NONE;
+  }
+
+  int num_key_events_dispatched_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockDispatcher);
+};
+
+class TestTarget : public ui::AcceleratorTarget {
+ public:
+  TestTarget() : accelerator_pressed_count_(0) {}
+  virtual ~TestTarget() {}
+
+  int accelerator_pressed_count() const { return accelerator_pressed_count_; }
+
+  // Overridden from ui::AcceleratorTarget:
+  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE {
+    accelerator_pressed_count_++;
+    return true;
+  }
+  virtual bool CanHandleAccelerators() const OVERRIDE { return true; }
+
+ private:
+  int accelerator_pressed_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestTarget);
+};
+
+void DispatchKeyReleaseA(aura::Window* root_window) {
+// Sending both keydown and keyup is necessary here because the accelerator
+// manager only checks a keyup event following a keydown event. See
+// ShouldHandle() in ui/base/accelerators/accelerator_manager.cc for details.
+#if defined(OS_WIN)
+  MSG native_event_down = {NULL, WM_KEYDOWN, ui::VKEY_A, 0};
+  aura::WindowTreeHost* host = root_window->GetHost();
+  host->PostNativeEvent(native_event_down);
+  MSG native_event_up = {NULL, WM_KEYUP, ui::VKEY_A, 0};
+  host->PostNativeEvent(native_event_up);
+#elif defined(USE_X11)
+  ui::ScopedXI2Event native_event;
+  native_event.InitKeyEvent(ui::ET_KEY_PRESSED, ui::VKEY_A, 0);
+  aura::WindowTreeHost* host = root_window->GetHost();
+  host->PostNativeEvent(native_event);
+  native_event.InitKeyEvent(ui::ET_KEY_RELEASED, ui::VKEY_A, 0);
+  host->PostNativeEvent(native_event);
+#endif
+  // Make sure the inner message-loop terminates after dispatching the events.
+  base::MessageLoop::current()->PostTask(
+      FROM_HERE, base::MessageLoop::current()->QuitClosure());
+}
+
+class MockNestedAcceleratorDelegate : public NestedAcceleratorDelegate {
+ public:
+  MockNestedAcceleratorDelegate()
+      : accelerator_manager_(new ui::AcceleratorManager) {}
+  virtual ~MockNestedAcceleratorDelegate() {}
+
+  // NestedAcceleratorDelegate:
+  virtual bool ShouldProcessEventNow(const ui::KeyEvent& key_event) OVERRIDE {
+    return true;
+  }
+  virtual bool ProcessEvent(const ui::KeyEvent& key_event) OVERRIDE {
+    const int kModifierMask =
+        (ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN);
+    ui::Accelerator accelerator(key_event.key_code(),
+                                key_event.flags() & kModifierMask);
+    if (key_event.type() == ui::ET_KEY_RELEASED)
+      accelerator.set_type(ui::ET_KEY_RELEASED);
+    return accelerator_manager_->Process(accelerator);
+  }
+
+  void Register(const ui::Accelerator& accelerator,
+                ui::AcceleratorTarget* target) {
+    accelerator_manager_->Register(
+        accelerator, ui::AcceleratorManager::kNormalPriority, target);
+  }
+
+ private:
+  scoped_ptr<ui::AcceleratorManager> accelerator_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockNestedAcceleratorDelegate);
+};
+
+class NestedAcceleratorTest : public aura::test::AuraTestBase {
+ public:
+  NestedAcceleratorTest() {}
+  virtual ~NestedAcceleratorTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    AuraTestBase::SetUp();
+    delegate_ = new MockNestedAcceleratorDelegate();
+    nested_accelerator_controller_.reset(
+        new NestedAcceleratorController(delegate_));
+    aura::client::SetDispatcherClient(root_window(),
+                                      nested_accelerator_controller_.get());
+  }
+
+  virtual void TearDown() OVERRIDE {
+    aura::client::SetDispatcherClient(root_window(), NULL);
+    AuraTestBase::TearDown();
+    delegate_ = NULL;
+    nested_accelerator_controller_.reset();
+  }
+
+  MockNestedAcceleratorDelegate* delegate() { return delegate_; }
+
+ private:
+  scoped_ptr<NestedAcceleratorController> nested_accelerator_controller_;
+  MockNestedAcceleratorDelegate* delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(NestedAcceleratorTest);
+};
+
+}  // namespace
+
+// Aura window above lock screen in z order.
+TEST_F(NestedAcceleratorTest, AssociatedWindowAboveLockScreen) {
+  // TODO(oshima|sadrul): remove when Win implements PES.
+  if (!ui::PlatformEventSource::GetInstance())
+    return;
+  MockDispatcher inner_dispatcher;
+  scoped_ptr<aura::Window> mock_lock_container(
+      CreateNormalWindow(0, root_window(), NULL));
+  aura::test::CreateTestWindowWithId(1, mock_lock_container.get());
+
+  scoped_ptr<aura::Window> associated_window(
+      CreateNormalWindow(2, root_window(), NULL));
+  EXPECT_TRUE(aura::test::WindowIsAbove(associated_window.get(),
+                                        mock_lock_container.get()));
+
+  DispatchKeyReleaseA(root_window());
+  scoped_ptr<ui::ScopedEventDispatcher> override_dispatcher =
+      ui::PlatformEventSource::GetInstance()->OverrideDispatcher(
+          &inner_dispatcher);
+  aura::client::GetDispatcherClient(root_window())->RunWithDispatcher(NULL);
+  EXPECT_EQ(1, inner_dispatcher.num_key_events_dispatched());
+}
+
+// Test that the nested dispatcher handles accelerators.
+TEST_F(NestedAcceleratorTest, AcceleratorsHandled) {
+  // TODO(oshima|sadrul): remove when Win implements PES.
+  if (!ui::PlatformEventSource::GetInstance())
+    return;
+  MockDispatcher inner_dispatcher;
+  ui::Accelerator accelerator(ui::VKEY_A, ui::EF_NONE);
+  accelerator.set_type(ui::ET_KEY_RELEASED);
+  TestTarget target;
+  delegate()->Register(accelerator, &target);
+
+  DispatchKeyReleaseA(root_window());
+  scoped_ptr<ui::ScopedEventDispatcher> override_dispatcher =
+      ui::PlatformEventSource::GetInstance()->OverrideDispatcher(
+          &inner_dispatcher);
+  aura::client::GetDispatcherClient(root_window())->RunWithDispatcher(NULL);
+  EXPECT_EQ(0, inner_dispatcher.num_key_events_dispatched());
+  EXPECT_EQ(1, target.accelerator_pressed_count());
+}
+
+}  //  namespace test
+}  //  namespace wm