widget_unittest.cc - Android社区 - https://www.androidos.net.cn/

// 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 <set>

#include "base/basictypes.h"
#include "base/bind.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/base/hit_test.h"
#include "ui/compositor/layer_animation_observer.h"
#include "ui/compositor/scoped_animation_duration_scale_mode.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/events/event_processor.h"
#include "ui/events/event_utils.h"
#include "ui/events/test/event_generator.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/point.h"
#include "ui/views/bubble/bubble_delegate.h"
#include "ui/views/controls/textfield/textfield.h"
#include "ui/views/test/test_views_delegate.h"
#include "ui/views/test/widget_test.h"
#include "ui/views/views_delegate.h"
#include "ui/views/widget/native_widget_delegate.h"
#include "ui/views/widget/root_view.h"
#include "ui/views/widget/widget_deletion_observer.h"
#include "ui/views/window/dialog_delegate.h"
#include "ui/views/window/native_frame_view.h"

#if defined(OS_WIN)
#include "ui/views/win/hwnd_util.h"
#endif

namespace views {
namespace test {

namespace {

// TODO(tdanderson): This utility function is used in different unittest
//                   files. Move to a common location to avoid
//                   repeated code.
gfx::Point ConvertPointFromWidgetToView(View* view, const gfx::Point& p) {
  gfx::Point tmp(p);
  View::ConvertPointToTarget(view->GetWidget()->GetRootView(), view, &tmp);
  return tmp;
}

}  // namespace

// A view that keeps track of the events it receives, optionally consuming them.
class EventCountView : public View {
 public:
  // Whether to call SetHandled() on events as they are received. For some event
  // types, this will allow EventCountView to receives future events in the
  // event sequence, such as a drag.
  enum HandleMode {
    PROPAGATE_EVENTS,
    CONSUME_EVENTS
  };

EventCountView()
      : last_flags_(0),
        handle_mode_(PROPAGATE_EVENTS) {}

virtual ~EventCountView() {}

int GetEventCount(ui::EventType type) {
    return event_count_[type];
  }

void ResetCounts() {
    event_count_.clear();
  }

int last_flags() const {
    return last_flags_;
  }

void set_handle_mode(HandleMode handle_mode) {
    handle_mode_ = handle_mode;
  }

protected:
  // Overridden from View:
  virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE {
    // MouseMove events are not re-dispatched from the RootView.
    ++event_count_[ui::ET_MOUSE_MOVED];
    last_flags_ = 0;
  }

// Overridden from ui::EventHandler:
  virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
    RecordEvent(event);
  }
  virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
    RecordEvent(event);
  }
  virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE {
    RecordEvent(event);
  }
  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
    RecordEvent(event);
  }

private:
  void RecordEvent(ui::Event* event) {
    ++event_count_[event->type()];
    last_flags_ = event->flags();
    if (handle_mode_ == CONSUME_EVENTS)
      event->SetHandled();
  }

std::map<ui::EventType, int> event_count_;
  int last_flags_;
  HandleMode handle_mode_;

DISALLOW_COPY_AND_ASSIGN(EventCountView);
};

// A view that keeps track of the events it receives, and consumes all scroll
// gesture events and ui::ET_SCROLL events.
class ScrollableEventCountView : public EventCountView {
 public:
  ScrollableEventCountView() {}
  virtual ~ScrollableEventCountView() {}

private:
  // Overridden from ui::EventHandler:
  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
    EventCountView::OnGestureEvent(event);
    switch (event->type()) {
      case ui::ET_GESTURE_SCROLL_BEGIN:
      case ui::ET_GESTURE_SCROLL_UPDATE:
      case ui::ET_GESTURE_SCROLL_END:
      case ui::ET_SCROLL_FLING_START:
        event->SetHandled();
        break;
      default:
        break;
    }
  }

virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE {
    EventCountView::OnScrollEvent(event);
    if (event->type() == ui::ET_SCROLL)
      event->SetHandled();
  }

DISALLOW_COPY_AND_ASSIGN(ScrollableEventCountView);
};

// A view that implements GetMinimumSize.
class MinimumSizeFrameView : public NativeFrameView {
 public:
  explicit MinimumSizeFrameView(Widget* frame): NativeFrameView(frame) {}
  virtual ~MinimumSizeFrameView() {}

private:
  // Overridden from View:
  virtual gfx::Size GetMinimumSize() const OVERRIDE {
    return gfx::Size(300, 400);
  }

DISALLOW_COPY_AND_ASSIGN(MinimumSizeFrameView);
};

// An event handler that simply keeps a count of the different types of events
// it receives.
class EventCountHandler : public ui::EventHandler {
 public:
  EventCountHandler() {}
  virtual ~EventCountHandler() {}

int GetEventCount(ui::EventType type) {
    return event_count_[type];
  }

void ResetCounts() {
    event_count_.clear();
  }

protected:
  // Overridden from ui::EventHandler:
  virtual void OnEvent(ui::Event* event) OVERRIDE {
    RecordEvent(*event);
    ui::EventHandler::OnEvent(event);
  }

private:
  void RecordEvent(const ui::Event& event) {
    ++event_count_[event.type()];
  }

std::map<ui::EventType, int> event_count_;

DISALLOW_COPY_AND_ASSIGN(EventCountHandler);
};

// Class that closes the widget (which ends up deleting it immediately) when the
// appropriate event is received.
class CloseWidgetView : public View {
 public:
  explicit CloseWidgetView(ui::EventType event_type)
      : event_type_(event_type) {
  }

// ui::EventHandler override:
  virtual void OnEvent(ui::Event* event) OVERRIDE {
    if (event->type() == event_type_) {
      // Go through NativeWidgetPrivate to simulate what happens if the OS
      // deletes the NativeWindow out from under us.
      GetWidget()->native_widget_private()->CloseNow();
    } else {
      View::OnEvent(event);
      if (!event->IsTouchEvent())
        event->SetHandled();
    }
  }

private:
  const ui::EventType event_type_;

DISALLOW_COPY_AND_ASSIGN(CloseWidgetView);
};

ui::WindowShowState GetWidgetShowState(const Widget* widget) {
  // Use IsMaximized/IsMinimized/IsFullScreen instead of GetWindowPlacement
  // because the former is implemented on all platforms but the latter is not.
  return widget->IsFullscreen() ? ui::SHOW_STATE_FULLSCREEN :
      widget->IsMaximized() ? ui::SHOW_STATE_MAXIMIZED :
      widget->IsMinimized() ? ui::SHOW_STATE_MINIMIZED :
      widget->IsActive() ? ui::SHOW_STATE_NORMAL :
                           ui::SHOW_STATE_INACTIVE;
}

TEST_F(WidgetTest, WidgetInitParams) {
  // Widgets are not transparent by default.
  Widget::InitParams init1;
  EXPECT_EQ(Widget::InitParams::INFER_OPACITY, init1.opacity);
}

////////////////////////////////////////////////////////////////////////////////
// Widget::GetTopLevelWidget tests.

TEST_F(WidgetTest, GetTopLevelWidget_Native) {
  // Create a hierarchy of native widgets.
  Widget* toplevel = CreateTopLevelPlatformWidget();
  gfx::NativeView parent = toplevel->GetNativeView();
  Widget* child = CreateChildPlatformWidget(parent);

EXPECT_EQ(toplevel, toplevel->GetTopLevelWidget());
  EXPECT_EQ(toplevel, child->GetTopLevelWidget());

toplevel->CloseNow();
  // |child| should be automatically destroyed with |toplevel|.
}

// Test if a focus manager and an inputmethod work without CHECK failure
// when window activation changes.
TEST_F(WidgetTest, ChangeActivation) {
  Widget* top1 = CreateTopLevelPlatformWidget();
  // CreateInputMethod before activated
  top1->GetInputMethod();
  top1->Show();
  RunPendingMessages();

Widget* top2 = CreateTopLevelPlatformWidget();
  top2->Show();
  RunPendingMessages();

top1->Activate();
  RunPendingMessages();

// Create InputMethod after deactivated.
  top2->GetInputMethod();
  top2->Activate();
  RunPendingMessages();

top1->Activate();
  RunPendingMessages();

top1->CloseNow();
  top2->CloseNow();
}

// Tests visibility of child widgets.
TEST_F(WidgetTest, Visibility) {
  Widget* toplevel = CreateTopLevelPlatformWidget();
  gfx::NativeView parent = toplevel->GetNativeView();
  Widget* child = CreateChildPlatformWidget(parent);

EXPECT_FALSE(toplevel->IsVisible());
  EXPECT_FALSE(child->IsVisible());

child->Show();

EXPECT_FALSE(toplevel->IsVisible());
  EXPECT_FALSE(child->IsVisible());

toplevel->Show();

EXPECT_TRUE(toplevel->IsVisible());
  EXPECT_TRUE(child->IsVisible());

toplevel->CloseNow();
  // |child| should be automatically destroyed with |toplevel|.
}

////////////////////////////////////////////////////////////////////////////////
// Widget ownership tests.
//
// Tests various permutations of Widget ownership specified in the
// InitParams::Ownership param.

// A WidgetTest that supplies a toplevel widget for NativeWidget to parent to.
class WidgetOwnershipTest : public WidgetTest {
 public:
  WidgetOwnershipTest() {}
  virtual ~WidgetOwnershipTest() {}

virtual void SetUp() {
    WidgetTest::SetUp();
    desktop_widget_ = CreateTopLevelPlatformWidget();
  }

virtual void TearDown() {
    desktop_widget_->CloseNow();
    WidgetTest::TearDown();
  }

private:
  Widget* desktop_widget_;

DISALLOW_COPY_AND_ASSIGN(WidgetOwnershipTest);
};

// A bag of state to monitor destructions.
struct OwnershipTestState {
  OwnershipTestState() : widget_deleted(false), native_widget_deleted(false) {}

bool widget_deleted;
  bool native_widget_deleted;
};

// A platform NativeWidget subclass that updates a bag of state when it is
// destroyed.
class OwnershipTestNativeWidget : public PlatformNativeWidget {
 public:
  OwnershipTestNativeWidget(internal::NativeWidgetDelegate* delegate,
                            OwnershipTestState* state)
      : PlatformNativeWidget(delegate),
        state_(state) {
  }
  virtual ~OwnershipTestNativeWidget() {
    state_->native_widget_deleted = true;
  }

private:
  OwnershipTestState* state_;

DISALLOW_COPY_AND_ASSIGN(OwnershipTestNativeWidget);
};

// A views NativeWidget subclass that updates a bag of state when it is
// destroyed.
class OwnershipTestNativeWidgetAura : public NativeWidgetCapture {
 public:
  OwnershipTestNativeWidgetAura(internal::NativeWidgetDelegate* delegate,
                                OwnershipTestState* state)
      : NativeWidgetCapture(delegate),
        state_(state) {
  }
  virtual ~OwnershipTestNativeWidgetAura() {
    state_->native_widget_deleted = true;
  }

private:
  OwnershipTestState* state_;

DISALLOW_COPY_AND_ASSIGN(OwnershipTestNativeWidgetAura);
};

// A Widget subclass that updates a bag of state when it is destroyed.
class OwnershipTestWidget : public Widget {
 public:
  explicit OwnershipTestWidget(OwnershipTestState* state) : state_(state) {}
  virtual ~OwnershipTestWidget() {
    state_->widget_deleted = true;
  }

private:
  OwnershipTestState* state_;

DISALLOW_COPY_AND_ASSIGN(OwnershipTestWidget);
};

// Widget owns its NativeWidget, part 1: NativeWidget is a platform-native
// widget.
TEST_F(WidgetOwnershipTest, Ownership_WidgetOwnsPlatformNativeWidget) {
  OwnershipTestState state;

scoped_ptr<Widget> widget(new OwnershipTestWidget(&state));
  Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
  params.native_widget =
      new OwnershipTestNativeWidgetAura(widget.get(), &state);
  params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
  widget->Init(params);

// Now delete the Widget, which should delete the NativeWidget.
  widget.reset();

EXPECT_TRUE(state.widget_deleted);
  EXPECT_TRUE(state.native_widget_deleted);

// TODO(beng): write test for this ownership scenario and the NativeWidget
  //             being deleted out from under the Widget.
}

// Widget owns its NativeWidget, part 2: NativeWidget is a NativeWidget.
TEST_F(WidgetOwnershipTest, Ownership_WidgetOwnsViewsNativeWidget) {
  OwnershipTestState state;

// Now delete the Widget, which should delete the NativeWidget.
  widget.reset();

EXPECT_TRUE(state.widget_deleted);
  EXPECT_TRUE(state.native_widget_deleted);

// TODO(beng): write test for this ownership scenario and the NativeWidget
  //             being deleted out from under the Widget.
}

// Widget owns its NativeWidget, part 3: NativeWidget is a NativeWidget,
// destroy the parent view.
TEST_F(WidgetOwnershipTest,
       Ownership_WidgetOwnsViewsNativeWidget_DestroyParentView) {
  OwnershipTestState state;

Widget* toplevel = CreateTopLevelPlatformWidget();

scoped_ptr<Widget> widget(new OwnershipTestWidget(&state));
  Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
  params.native_widget =
      new OwnershipTestNativeWidgetAura(widget.get(), &state);
  params.parent = toplevel->GetNativeView();
  params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
  widget->Init(params);

// Now close the toplevel, which deletes the view hierarchy.
  toplevel->CloseNow();

RunPendingMessages();

// This shouldn't delete the widget because it shouldn't be deleted
  // from the native side.
  EXPECT_FALSE(state.widget_deleted);
  EXPECT_FALSE(state.native_widget_deleted);

// Now delete it explicitly.
  widget.reset();