content/browser/renderer_host/render_widget_host_view_aura.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
#define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_

#include <stddef.h>
#include <stdint.h>

#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>

#include "base/callback.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string_piece.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "cc/layers/deadline_policy.h"
#include "components/viz/common/frame_sinks/begin_frame_args.h"
#include "components/viz/common/frame_sinks/begin_frame_source.h"
#include "content/browser/accessibility/browser_accessibility_manager.h"
#include "content/browser/compositor/image_transport_factory.h"
#include "content/browser/renderer_host/render_widget_host_view_base.h"
#include "content/browser/renderer_host/render_widget_host_view_event_handler.h"
#include "content/browser/renderer_host/text_input_manager.h"
#include "content/common/content_export.h"
#include "content/common/cursors/webcursor.h"
#include "content/public/browser/context_menu_params.h"
#include "content/public/browser/visibility.h"
#include "third_party/blink/public/mojom/input/input_handler.mojom-forward.h"
#include "third_party/blink/public/mojom/widget/record_content_to_visible_time_request.mojom-forward.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "ui/aura/client/cursor_client_observer.h"
#include "ui/aura/client/focus_change_observer.h"
#include "ui/aura/client/window_types.h"
#include "ui/aura/window_delegate.h"
#include "ui/aura/window_tree_host_observer.h"
#include "ui/base/ime/text_input_client.h"
#include "ui/display/display_observer.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/selection_bound.h"
#include "ui/wm/public/activation_delegate.h"

#if BUILDFLAG(IS_WIN)
#include "content/browser/renderer_host/virtual_keyboard_controller_win.h"
#endif

namespace aura_extra {
class WindowPositionInRootMonitor;
}

namespace wm {
class ScopedTooltipDisabler;
}

namespace gfx {
class Display;
class Point;
class Rect;
}

namespace ui {
enum class DomCode;
class InputMethod;
class LocatedEvent;
}

namespace content {
#if BUILDFLAG(IS_WIN)
class LegacyRenderWidgetHostHWND;
class DirectManipulationBrowserTestBase;
#endif

class CursorManager;
class DelegatedFrameHost;
class DelegatedFrameHostClient;
class MouseWheelPhaseHandler;
class RenderFrameHostImpl;
class RenderWidgetHostView;
class TouchSelectionControllerClientAura;

// RenderWidgetHostView class hierarchy described in render_widget_host_view.h.
class CONTENT_EXPORT RenderWidgetHostViewAura
    : public RenderWidgetHostViewBase,
      public RenderWidgetHostViewEventHandler::Delegate,
      public RenderFrameMetadataProvider::Observer,
      public TextInputManager::Observer,
      public ui::TextInputClient,
      public display::DisplayObserver,
      public aura::WindowTreeHostObserver,
      public aura::WindowDelegate,
      public wm::ActivationDelegate,
      public aura::client::FocusChangeObserver,
      public aura::client::CursorClientObserver {
 public:
  explicit RenderWidgetHostViewAura(RenderWidgetHost* host);
  RenderWidgetHostViewAura(const RenderWidgetHostViewAura&) = delete;
  RenderWidgetHostViewAura& operator=(const RenderWidgetHostViewAura&) = delete;

  // RenderWidgetHostView implementation.
  void InitAsChild(gfx::NativeView parent_view) override;
  void SetSize(const gfx::Size& size) override;
  void SetBounds(const gfx::Rect& rect) override;
  gfx::NativeView GetNativeView() override;
  gfx::NativeViewAccessible GetNativeViewAccessible() override;
  ui::TextInputClient* GetTextInputClient() override;
  bool HasFocus() override;
  void Hide() override;
  bool IsShowing() override;
  void WasUnOccluded() override;
  void WasOccluded() override;
  gfx::Rect GetViewBounds() override;
  bool IsMouseLocked() override;
  gfx::Size GetVisibleViewportSize() override;
  void SetInsets(const gfx::Insets& insets) override;
  TouchSelectionControllerClientManager*
  GetTouchSelectionControllerClientManager() override;
  bool ShouldVirtualKeyboardOverlayContent() override;
  void NotifyVirtualKeyboardOverlayRect(
      const gfx::Rect& keyboard_rect) override;
  bool IsHTMLFormPopup() const override;

  // Overridden from RenderWidgetHostViewBase:
  void InitAsPopup(RenderWidgetHostView* parent_host_view,
                   const gfx::Rect& pos,
                   const gfx::Rect& anchor_rect) override;
  void Focus() override;
  void UpdateCursor(const WebCursor& cursor) override;
  void DisplayCursor(const WebCursor& cursor) override;
  CursorManager* GetCursorManager() override;
  void SetIsLoading(bool is_loading) override;
  void RenderProcessGone() override;
  void ShowWithVisibility(PageVisibilityState page_visibility) final;
  void Destroy() override;
  void UpdateTooltipUnderCursor(const std::u16string& tooltip_text) override;
  void UpdateTooltip(const std::u16string& tooltip_text) override;
  void UpdateTooltipFromKeyboard(const std::u16string& tooltip_text,
                                 const gfx::Rect& bounds) override;
  void ClearKeyboardTriggeredTooltip() override;
  uint32_t GetCaptureSequenceNumber() const override;
  bool IsSurfaceAvailableForCopy() override;
  void CopyFromSurface(
      const gfx::Rect& src_rect,
      const gfx::Size& output_size,
      base::OnceCallback<void(const SkBitmap&)> callback) override;
  void EnsureSurfaceSynchronizedForWebTest() override;
  void TransformPointToRootSurface(gfx::PointF* point) override;
  gfx::Rect GetBoundsInRootWindow() override;
  void WheelEventAck(const blink::WebMouseWheelEvent& event,
                     blink::mojom::InputEventResultState ack_result) override;
  void GestureEventAck(
      const blink::WebGestureEvent& event,
      blink::mojom::InputEventResultState ack_result,
      blink::mojom::ScrollResultDataPtr scroll_result_data) override;
  void DidOverscroll(const ui::DidOverscrollParams& params) override;
  void ProcessAckedTouchEvent(
      const TouchEventWithLatencyInfo& touch,
      blink::mojom::InputEventResultState ack_result) override;
  std::unique_ptr<SyntheticGestureTarget> CreateSyntheticGestureTarget()
      override;
  blink::mojom::InputEventResultState FilterInputEvent(
      const blink::WebInputEvent& input_event) override;
  gfx::AcceleratedWidget AccessibilityGetAcceleratedWidget() override;
  gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible() override;
  void SetMainFrameAXTreeID(ui::AXTreeID id) override;
  blink::mojom::PointerLockResult LockMouse(
      bool request_unadjusted_movement) override;
  blink::mojom::PointerLockResult ChangeMouseLock(
      bool request_unadjusted_movement) override;
  void UnlockMouse() override;
  bool GetIsMouseLockedUnadjustedMovementForTesting() override;
  bool LockKeyboard(absl::optional<base::flat_set<ui::DomCode>> codes) override;
  void UnlockKeyboard() override;
  bool IsKeyboardLocked() override;
  base::flat_map<std::string, std::string> GetKeyboardLayoutMap() override;
  void ClearFallbackSurfaceForCommitPending() override;
  void ResetFallbackToFirstNavigationSurface() override;
  bool RequestRepaintForTesting() override;
  void DidStopFlinging() override;
  void OnDidNavigateMainFrameToNewPage() override;
  const viz::FrameSinkId& GetFrameSinkId() const override;
  const viz::LocalSurfaceId& GetLocalSurfaceId() const override;
  bool TransformPointToCoordSpaceForView(
      const gfx::PointF& point,
      RenderWidgetHostViewBase* target_view,
      gfx::PointF* transformed_point) override;
  viz::FrameSinkId GetRootFrameSinkId() override;
  viz::SurfaceId GetCurrentSurfaceId() const override;
  void FocusedNodeChanged(bool is_editable_node,
                          const gfx::Rect& node_bounds_in_screen) override;
  void OnSynchronizedDisplayPropertiesChanged(bool rotation = false) override;
  viz::ScopedSurfaceIdAllocator DidUpdateVisualProperties(
      const cc::RenderFrameMetadata& metadata) override;
  void DidNavigate() override;
  void TakeFallbackContentFrom(RenderWidgetHostView* view) override;
  bool CanSynchronizeVisualProperties() override;
  std::vector<std::unique_ptr<ui::TouchEvent>> ExtractAndCancelActiveTouches()
      override;
  void TransferTouches(
      const std::vector<std::unique_ptr<ui::TouchEvent>>& touches) override;
  // TODO(lanwei): Use TestApi interface to write functions that are used in
  // tests and remove FRIEND_TEST_ALL_PREFIXES.
  void SetLastPointerType(ui::EventPointerType last_pointer_type) override;

  // Overridden from ui::TextInputClient:
  void SetCompositionText(const ui::CompositionText& composition) override;
  size_t ConfirmCompositionText(bool keep_selection) override;
  void ClearCompositionText() override;
  void InsertText(const std::u16string& text,
                  InsertTextCursorBehavior cursor_behavior) override;
  void InsertChar(const ui::KeyEvent& event) override;
  ui::TextInputType GetTextInputType() const override;
  ui::TextInputMode GetTextInputMode() const override;
  base::i18n::TextDirection GetTextDirection() const override;
  int GetTextInputFlags() const override;
  bool CanComposeInline() const override;
  gfx::Rect GetCaretBounds() const override;
  gfx::Rect GetSelectionBoundingBox() const override;
  bool GetCompositionCharacterBounds(size_t index,
                                     gfx::Rect* rect) const override;
  bool HasCompositionText() const override;
  ui::TextInputClient::FocusReason GetFocusReason() const override;
  bool GetTextRange(gfx::Range* range) const override;
  bool GetCompositionTextRange(gfx::Range* range) const override;
  bool GetEditableSelectionRange(gfx::Range* range) const override;
  bool SetEditableSelectionRange(const gfx::Range& range) override;
  bool GetTextFromRange(const gfx::Range& range,
                        std::u16string* text) const override;
  void OnInputMethodChanged() override;
  bool ChangeTextDirectionAndLayoutAlignment(
      base::i18n::TextDirection direction) override;
  void ExtendSelectionAndDelete(size_t before, size_t after) override;
  void EnsureCaretNotInRect(const gfx::Rect& rect) override;
  bool IsTextEditCommandEnabled(ui::TextEditCommand command) const override;
  void SetTextEditCommandForNextKeyEvent(ui::TextEditCommand command) override;
  ukm::SourceId GetClientSourceForMetrics() const override;
  bool ShouldDoLearning() override;

#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
  bool SetCompositionFromExistingText(
      const gfx::Range& range,
      const std::vector<ui::ImeTextSpan>& ui_ime_text_spans) override;
#endif

#if BUILDFLAG(IS_CHROMEOS)
  gfx::Range GetAutocorrectRange() const override;
  gfx::Rect GetAutocorrectCharacterBounds() const override;
  bool SetAutocorrectRange(const gfx::Range& range) override;
  absl::optional<ui::GrammarFragment> GetGrammarFragmentAtCursor()
      const override;
  bool ClearGrammarFragments(const gfx::Range& range) override;
  bool AddGrammarFragments(
      const std::vector<ui::GrammarFragment>& fragments) override;
#endif

#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_CHROMEOS)
  // Returns the control and selection bounds of the EditContext or control
  // bounds of the active editable element. This is used to report the layout
  // bounds of the text input control to TSF on Windows.
  void GetActiveTextInputControlLayoutBounds(
      absl::optional<gfx::Rect>* control_bounds,
      absl::optional<gfx::Rect>* selection_bounds) override;
#endif

#if BUILDFLAG(IS_WIN)
  // API to notify accessibility whether there is an active composition
  // from TSF or not.
  // It notifies the composition range, composition text and whether the
  // composition has been committed or not.
  void SetActiveCompositionForAccessibility(
      const gfx::Range& range,
      const std::u16string& active_composition_text,
      bool is_composition_committed) override;

  // Returns the editing context of the active web content.
  // This is currently used by TSF to  to fetch the URL of the active web
  // content.
  // https://docs.microsoft.com/en-us/windows/win32/tsf/predefined-properties
  ui::TextInputClient::EditingContext GetTextEditingContext() override;
#endif

  // Overridden from display::DisplayObserver:
  void OnDisplayMetricsChanged(const display::Display& display,
                               uint32_t metrics) override;

  // Overridden from aura::WindowDelegate:
  gfx::Size GetMinimumSize() const override;
  gfx::Size GetMaximumSize() const override;
  void OnBoundsChanged(const gfx::Rect& old_bounds,
                       const gfx::Rect& new_bounds) override;
  gfx::NativeCursor GetCursor(const gfx::Point& point) override;
  int GetNonClientComponent(const gfx::Point& point) const override;
  bool ShouldDescendIntoChildForEventHandling(
      aura::Window* child,
      const gfx::Point& location) override;
  bool CanFocus() override;
  void OnCaptureLost() override;
  void OnPaint(const ui::PaintContext& context) override;
  void OnDeviceScaleFactorChanged(float old_device_scale_factor,
                                  float new_device_scale_factor) override;
  void OnWindowDestroying(aura::Window* window) override;
  void OnWindowDestroyed(aura::Window* window) override;
  void OnWindowTargetVisibilityChanged(bool visible) override;
  bool HasHitTestMask() const override;
  void GetHitTestMask(SkPath* mask) const override;
  bool RequiresDoubleTapGestureEvents() const override;

  // Overridden from ui::EventHandler:
  void OnKeyEvent(ui::KeyEvent* event) override;
  void OnMouseEvent(ui::MouseEvent* event) override;
  void OnScrollEvent(ui::ScrollEvent* event) override;
  void OnTouchEvent(ui::TouchEvent* event) override;
  void OnGestureEvent(ui::GestureEvent* event) override;
  base::StringPiece GetLogContext() const override;

  // Overridden from wm::ActivationDelegate:
  bool ShouldActivate() const override;

  // Overridden from aura::client::CursorClientObserver:
  void OnCursorVisibilityChanged(bool is_visible) override;

  // Overridden from aura::client::CursorClientObserver:
  void OnSystemCursorSizeChanged(const gfx::Size& cursor_size) override;

  // Overridden from aura::client::FocusChangeObserver:
  void OnWindowFocused(aura::Window* gained_focus,
                       aura::Window* lost_focus) override;

  // Overridden from aura::WindowTreeHostObserver:
  void OnHostMovedInPixels(aura::WindowTreeHost* host) override;

  // RenderFrameMetadataProvider::Observer implementation.
  void OnRenderFrameMetadataChangedBeforeActivation(
      const cc::RenderFrameMetadata& metadata) override {}
  void OnRenderFrameMetadataChangedAfterActivation(
      base::TimeTicks activation_time) override;
  void OnRenderFrameSubmission() override {}
  void OnLocalSurfaceIdChanged(
      const cc::RenderFrameMetadata& metadata) override {}

#if BUILDFLAG(IS_WIN)
  // Gets the HWND of the host window.
  HWND GetHostWindowHWND() const;

  // Updates the cursor clip region. Used for mouse locking.
  void UpdateMouseLockRegion();

  // Notification that the LegacyRenderWidgetHostHWND was destroyed.
  void OnLegacyWindowDestroyed();
#endif

  gfx::NativeViewAccessible GetParentNativeViewAccessible();

  // Method to indicate if this instance is shutting down or closing.
  // TODO(shrikant): Discuss around to see if it makes sense to add this method
  // as part of RenderWidgetHostView.
  bool IsClosing() const { return in_shutdown_; }

  // Sets whether the overscroll controller should be enabled for this page.
  void SetOverscrollControllerEnabled(bool enabled);

  void SnapToPhysicalPixelBoundary();

  // Used in tests to set a mock client for touch selection controller. It will
  // create a new touch selection controller for the new client.
  void SetSelectionControllerClientForTest(
      std::unique_ptr<TouchSelectionControllerClientAura> client);

  // RenderWidgetHostViewEventHandler::Delegate:
  gfx::Rect ConvertRectToScreen(const gfx::Rect& rect) const override;
  void ForwardKeyboardEventWithLatencyInfo(const NativeWebKeyboardEvent& event,
                                           const ui::LatencyInfo& latency,
                                           bool* update_event) override;
  RenderFrameHostImpl* GetFocusedFrame() const;
  bool NeedsMouseCapture() override;
  void SetTooltipsEnabled(bool enable) override;
  void Shutdown() override;

  bool FocusedFrameHasStickyActivation() const;

  RenderWidgetHostViewEventHandler* event_handler() {
    return event_handler_.get();
  }

  void ScrollFocusedEditableNodeIntoView();

  ui::EventPointerType GetLastPointerType() const { return last_pointer_type_; }

  MouseWheelPhaseHandler* GetMouseWheelPhaseHandler() override;

  ui::Compositor* GetCompositor() override;

 protected:
  ~RenderWidgetHostViewAura() override;

  // Exposed for tests.
  aura::Window* window() { return window_; }

  DelegatedFrameHost* GetDelegatedFrameHost() const {
    return delegated_frame_host_.get();
  }

  // RenderWidgetHostViewBase:
  void UpdateBackgroundColor() override;
  bool HasFallbackSurface() const override;
  absl::optional<DisplayFeature> GetDisplayFeature() override;
  void SetDisplayFeatureForTesting(
      const DisplayFeature* display_feature) override;
  void NotifyHostAndDelegateOnWasShown(
      blink::mojom::RecordContentToVisibleTimeRequestPtr visible_time_request)
      final;
  void RequestPresentationTimeFromHostOrDelegate(
      blink::mojom::RecordContentToVisibleTimeRequestPtr visible_time_request)
      final;
  void CancelPresentationTimeRequestForHostAndDelegate() final;

  // May be overridden in tests.
  virtual bool ShouldSkipCursorUpdate() const;

 private:
  friend class DelegatedFrameHostClientAura;
  friend class FakeRenderWidgetHostViewAura;
  friend class InputMethodAuraTestBase;
  friend class RenderWidgetHostViewAuraTest;
  friend class RenderWidgetHostViewAuraBrowserTest;
  friend class RenderWidgetHostViewAuraDevtoolsBrowserTest;
  friend class RenderWidgetHostViewAuraCopyRequestTest;
  friend class TestInputMethodObserver;
#if BUILDFLAG(IS_WIN)
  friend class AccessibilityObjectLifetimeWinBrowserTest;
  friend class AccessibilityTreeLinkageWinBrowserTest;
  friend class DirectManipulationBrowserTestBase;
#endif
  FRIEND_TEST_ALL_PREFIXES(InputMethodResultAuraTest,
                           FinishImeCompositionSession);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           PopupRetainsCaptureAfterMouseRelease);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, SetCompositionText);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, FocusedNodeChanged);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, TouchEventState);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           TouchEventPositionsArentRounded);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, TouchEventSyncAsync);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, Resize);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, SwapNotifiesWindow);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, MirrorLayers);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           SkippedDelegatedFrames);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           ResizeAfterReceivingFrame);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           ChildGeneratedResizeRoutesLocalSurfaceId);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, MissingFramesDontLock);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, OutputSurfaceIdChange);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DiscardDelegatedFrames);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DiscardDelegatedFramesWithLocking);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, SoftwareDPIChange);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           UpdateCursorIfOverSelf);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           VisibleViewportTest);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           OverscrollResetsOnBlur);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           FinishCompositionByMouse);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           ForwardsBeginFrameAcks);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           VirtualKeyboardFocusEnsureCaretInRect);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DiscardDelegatedFramesWithMemoryPressure);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraInputMethodTest,
                           OnCaretBoundsChanged);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraInputMethodTest,
                           OnCaretBoundsChangedInputModeNone);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraInputMethodFocusTest,
                           OnFocusLost);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraKeyboardTest,
                           KeyboardObserverDestroyed);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraKeyboardTest,
                           NoKeyboardObserverForMouseInput);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraKeyboardTest,
                           KeyboardObserverForOnlyTouchInput);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraKeyboardTest,
                           KeyboardObserverForFocusedNodeChanged);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraKeyboardTest,
                           KeyboardObserverForPenInput);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraKeyboardTest,
                           KeyboardObserverDetachDuringWindowDestroy);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DropFallbackWhenHidden);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           CompositorFrameSinkChange);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, SurfaceChanges);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DeviceScaleFactorChanges);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, HideThenShow);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DropFallbackIfResizedWhileHidden);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DontDropFallbackIfNotResizedWhileHidden);
  FRIEND_TEST_ALL_PREFIXES(SitePerProcessHitTestBrowserTest, PopupMenuTest);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           NewContentRenderingTimeout);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           AllocateLocalSurfaceIdOnEviction);
  FRIEND_TEST_ALL_PREFIXES(WebContentsViewAuraTest,
                           WebContentsViewReparent);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, TakeFallbackContent);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           TakeFallbackContentForPrerender);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           DiscardDelegatedFrames);
  FRIEND_TEST_ALL_PREFIXES(SitePerProcessHitTestBrowserTest,
                           ScrollOOPIFEditableElement);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, OcclusionHidesTooltip);
  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                           UpdateInsetsWithVirtualKeyboardEnabled);

  class WindowObserver;
  friend class WindowObserver;

  friend void VerifyStaleContentOnFrameEviction(
      RenderWidgetHostView* render_widget_host_view);

  void CreateAuraWindow(aura::client::WindowType type);

  // Returns true if a stale frame content needs to be set for the current RWHV.
  // This is primarily useful during various CrOS animations to prevent showing
  // a white screen and instead showing a snapshot of the frame content that
  // was most recently evicted.
  bool ShouldShowStaleContentOnEviction();

  void CreateDelegatedFrameHostClient();

  void UpdateCursorIfOverSelf();

  bool SynchronizeVisualProperties(
      const cc::DeadlinePolicy& deadline_policy,
      const absl::optional<viz::LocalSurfaceId>& child_local_surface_id);

  void OnDidUpdateVisualPropertiesComplete(
      const cc::RenderFrameMetadata& metadata);

  // Set the bounds of the window and handle size changes.  Assumes the caller
  // has already adjusted the origin of |rect| to conform to whatever coordinate
  // space is required by the aura::Window.
  void InternalSetBounds(const gfx::Rect& rect);

  // Update the insets for bounds change when the virtual keyboard is shown.
  void UpdateInsetsWithVirtualKeyboardEnabled();

#if BUILDFLAG(IS_WIN)
  // Creates and/or updates the legacy dummy window which corresponds to
  // the bounds of the webcontents. It is needed for accessibility and
  // for scrolling to work in legacy drivers for trackpoints/trackpads, etc.
  void UpdateLegacyWin();

  bool UsesNativeWindowFrame() const;
#endif

  ui::InputMethod* GetInputMethod() const;

  // Get the focused view that should be used for retrieving the text selection.
  RenderWidgetHostViewBase* GetFocusedViewForTextSelection() const;

  // Returns whether the widget needs an input grab to work properly.
  bool NeedsInputGrab();

  // Sends an IPC to the renderer process to communicate whether or not
  // the mouse cursor is visible anywhere on the screen.
  void NotifyRendererOfCursorVisibilityState(bool is_visible);

  // Called after |window_| is parented to a WindowEventDispatcher.
  void AddedToRootWindow();

  // Called prior to removing |window_| from a WindowEventDispatcher.
  void RemovingFromRootWindow();

  // TextInputManager::Observer implementation.
  void OnUpdateTextInputStateCalled(TextInputManager* text_input_manager,
                                    RenderWidgetHostViewBase* updated_view,
                                    bool did_update_state) override;
  void OnImeCancelComposition(TextInputManager* text_input_manager,
                              RenderWidgetHostViewBase* updated_view) override;
  void OnSelectionBoundsChanged(
      TextInputManager* text_input_manager,
      RenderWidgetHostViewBase* updated_view) override;
  void OnTextSelectionChanged(TextInputManager* text_input_mangager,
                              RenderWidgetHostViewBase* updated_view) override;

  // Detaches |this| from the input method object.
  // is_removed flag is true if this is called while the window is
  // getting removed/destroyed, false, otherwise.
  void DetachFromInputMethod(bool is_removed);

  // Dismisses a Web Popup on a mouse or touch press outside the popup and its
  // parent.
  void ApplyEventObserverForPopupExit(const ui::LocatedEvent& event);

  // Converts |rect| from screen coordinate to window coordinate.
  gfx::Rect ConvertRectFromScreen(const gfx::Rect& rect) const;

  // Called when the bounds of `window_` relative to the root change.
  void HandleBoundsInRootChanged();

  // Called when the parent window hierarchy for our window changes.
  void ParentHierarchyChanged();

  // Helper function to create a selection controller.
  void CreateSelectionController();

  // Used to set the |popup_child_host_view_| on the |popup_parent_host_view_|
  // and to notify the |event_handler_|.
  void SetPopupChild(RenderWidgetHostViewAura* popup_child_host_view);

  // Called when the window title is changed.
  void WindowTitleChanged();

  void InvalidateLocalSurfaceIdOnEviction();

  // Called to process a display metrics change.
  void ProcessDisplayMetricsChanged();

  void CancelActiveTouches();

  // Common part of UnOccluded() and Show().
  void ShowImpl(PageVisibilityState page_visibility);

  // Common part of Occluded() and Hide().
  void HideImpl();

  blink::mojom::FrameWidgetInputHandler*
  GetFrameWidgetInputHandlerForFocusedWidget();

  void SetTooltipText(const std::u16string& tooltip_text);

  // TODO(crbug.com/1298696): content_browsertests breaks with MTECheckedPtr
  // enabled. Triage.
  raw_ptr<aura::Window, DegradeToNoOpWhenMTE> window_;

  std::unique_ptr<DelegatedFrameHostClient> delegated_frame_host_client_;
  // NOTE: this may be null during destruction.
  std::unique_ptr<DelegatedFrameHost> delegated_frame_host_;

  std::unique_ptr<WindowObserver> window_observer_;

  // Tracks the ancestors of the RWHVA window for window location changes.
  std::unique_ptr<aura_extra::WindowPositionInRootMonitor>
      position_in_root_observer_;

  // Are we in the process of closing?  Tracked so we don't try to shutdown
  // again while inside shutdown, causing a double-free.
  bool in_shutdown_;

  // True if in the process of handling a window bounds changed notification.
  bool in_bounds_changed_;

  // Our parent host view, if this is a popup.  NULL otherwise.
  raw_ptr<RenderWidgetHostViewAura, DanglingUntriaged> popup_parent_host_view_;

  // Our child popup host. NULL if we do not have a child popup.
  raw_ptr<RenderWidgetHostViewAura, DanglingUntriaged> popup_child_host_view_;

  class EventObserverForPopupExit;
  std::unique_ptr<EventObserverForPopupExit> event_observer_for_popup_exit_;

  // True when content is being loaded. Used to show an hourglass cursor.
  bool is_loading_;

  // The cursor for the page. This is passed up from the renderer.
  WebCursor current_cursor_;

  // Indicates if there is onging composition text.
  bool has_composition_text_;

  // Current tooltip text.
  std::u16string tooltip_;

  // Whether or not a frame observer has been added.
  bool added_frame_observer_;

  // Used to track the last cursor visibility update that was sent to the
  // renderer via NotifyRendererOfCursorVisibilityState().
  enum CursorVisibilityState {
    UNKNOWN,
    VISIBLE,
    NOT_VISIBLE,
  };
  CursorVisibilityState cursor_visibility_state_in_renderer_;

#if BUILDFLAG(IS_WIN)
  // The LegacyRenderWidgetHostHWND class provides a dummy HWND which is used
  // for accessibility, as the container for windowless plugins like
  // Flash/Silverlight, etc and for legacy drivers for trackpoints/trackpads,
  // etc.
  // The LegacyRenderWidgetHostHWND instance is created during the first call
  // to RenderWidgetHostViewAura::InternalSetBounds. The instance is destroyed
  // when the LegacyRenderWidgetHostHWND hwnd is destroyed.
  raw_ptr<content::LegacyRenderWidgetHostHWND> legacy_render_widget_host_HWND_;

  // Set to true if the legacy_render_widget_host_HWND_ instance was destroyed
  // by Windows. This could happen if the browser window was destroyed by
  // DestroyWindow for e.g. This flag helps ensure that we don't try to create
  // the LegacyRenderWidgetHostHWND instance again as that would be a futile
  // exercise.
  bool legacy_window_destroyed_;

  // Contains a copy of the last context menu request parameters. Only set when
  // we receive a request to show the context menu on a long press.
  std::unique_ptr<ContextMenuParams> last_context_menu_params_;

  // Handles the showing/hiding of the VK on Windows.
  friend class VirtualKeyboardControllerWin;
  std::unique_ptr<VirtualKeyboardControllerWin>
      virtual_keyboard_controller_win_;

  gfx::Point last_mouse_move_location_;
#endif

  // The last selection bounds reported to the view.
  gfx::SelectionBound selection_start_;
  gfx::SelectionBound selection_end_;

  // The insets for the window bounds (not for screen) when the window is
  // partially occluded.
  gfx::Insets insets_;

  // Cache the occluded bounds in screen coordinate of the virtual keyboard.
  gfx::Rect keyboard_occluded_bounds_;

  std::unique_ptr<wm::ScopedTooltipDisabler> tooltip_disabler_;

  float device_scale_factor_;

  // While this is a ui::EventHandler for targetting, |event_handler_| actually
  // provides an implementation, and directs events to |host_|.
  std::unique_ptr<RenderWidgetHostViewEventHandler> event_handler_;

  // If this object is the main view of a RenderWidgetHostImpl, this value
  // equals to the FrameSinkId of that widget.
  const viz::FrameSinkId frame_sink_id_;

  std::unique_ptr<CursorManager> cursor_manager_;

  // Latest capture sequence number which is incremented when the caller
  // requests surfaces be synchronized via
  // EnsureSurfaceSynchronizedForWebTest().
  uint32_t latest_capture_sequence_number_ = 0u;

  // The pointer type of the most recent gesture/mouse/touch event.
  ui::EventPointerType last_pointer_type_ = ui::EventPointerType::kUnknown;
  // The pointer type that caused the most recent focus. This value will be
  // incorrect if the focus was not triggered by a user gesture.
  ui::EventPointerType last_pointer_type_before_focus_ =
      ui::EventPointerType::kUnknown;

  bool is_first_navigation_ = true;
  viz::LocalSurfaceId inset_surface_id_;

  // See OnDisplayMetricsChanged() for details.
  bool needs_to_update_display_metrics_ = false;

  // Saved value of WebPreferences' |double_tap_to_zoom_enabled|.
  bool double_tap_to_zoom_enabled_ = false;

  // Current visibility state. Initialized based on
  // RenderWidgetHostImpl::is_hidden().
  Visibility visibility_;

  // Represents a feature of the physical display whose offset and mask_length
  // are expressed in DIPs relative to the view. See display_feature.h for more
  // details.
  absl::optional<DisplayFeature> display_feature_;

  absl::optional<display::ScopedDisplayObserver> display_observer_;

  base::WeakPtrFactory<RenderWidgetHostViewAura> weak_ptr_factory_{this};
};

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_