Issue #1751 -- Remove cocoa and uikit widget support code

1 files changed, 0 insertions, 666 deletions

diff --git a/widget/cocoa/nsChildView.h b/widget/cocoa/nsChildView.h
deleted file mode 100644
index 2817c8d415..0000000000
--- a/widget/cocoa/nsChildView.h
+++ /dev/null
@@ -1,666 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef nsChildView_h_
-#define nsChildView_h_
-
-// formal protocols
-#include "mozView.h"
-#ifdef ACCESSIBILITY
-#include "mozilla/a11y/Accessible.h"
-#include "mozAccessibleProtocol.h"
-#endif
-
-#include "nsISupports.h"
-#include "nsBaseWidget.h"
-#include "nsWeakPtr.h"
-#include "TextInputHandler.h"
-#include "nsCocoaUtils.h"
-#include "gfxQuartzSurface.h"
-#include "GLContextTypes.h"
-#include "mozilla/Mutex.h"
-#include "nsRegion.h"
-#include "mozilla/MouseEvents.h"
-#include "mozilla/UniquePtr.h"
-
-#include "nsString.h"
-#include "nsIDragService.h"
-#include "ViewRegion.h"
-
-#import <Carbon/Carbon.h>
-#import <Cocoa/Cocoa.h>
-#import <AppKit/NSOpenGL.h>
-
-class nsChildView;
-class nsCocoaWindow;
-
-namespace {
-class GLPresenter;
-} // namespace
-
-namespace mozilla {
-class InputData;
-class PanGestureInput;
-class SwipeTracker;
-struct SwipeEventQueue;
-class VibrancyManager;
-namespace layers {
-class GLManager;
-class IAPZCTreeManager;
-} // namespace layers
-namespace widget {
-class RectTextureImage;
-class WidgetRenderingContext;
-} // namespace widget
-} // namespace mozilla
-
-@class PixelHostingView;
-
-@interface NSEvent (Undocumented)
-
-// Return Cocoa event's corresponding Carbon event.  Not initialized (on
-// synthetic events) until the OS actually "sends" the event.  This method
-// has been present in the same form since at least OS X 10.2.8.
-- (EventRef)_eventRef;
-
-@end
-
-@interface NSView (Undocumented)
-
-// Draws the title string of a window.
-// Present on NSThemeFrame since at least 10.6.
-// _drawTitleBar is somewhat complex, and has changed over the years
-// since OS X 10.6.  But in that time it's never done anything that
-// would break when called outside of -[NSView drawRect:] (which we
-// sometimes do), or whose output can't be redirected to a
-// CGContextRef object (which we also sometimes do).  This is likely
-// to remain true for the indefinite future.  However we should
-// check _drawTitleBar in each new major version of OS X.  For more
-// information see bug 877767.
-- (void)_drawTitleBar:(NSRect)aRect;
-
-// Returns an NSRect that is the bounding box for all an NSView's dirty
-// rectangles (ones that need to be redrawn).  The full list of dirty
-// rectangles can be obtained by calling -[NSView _dirtyRegion] and then
-// calling -[NSRegion getRects:count:] on what it returns.  Both these
-// methods have been present in the same form since at least OS X 10.5.
-// Unlike -[NSView getRectsBeingDrawn:count:], these methods can be called
-// outside a call to -[NSView drawRect:].
-- (NSRect)_dirtyRect;
-
-// Undocumented method of one or more of NSFrameView's subclasses.  Called
-// when one or more of the titlebar buttons needs to be repositioned, to
-// disappear, or to reappear (say if the window's style changes).  If
-// 'redisplay' is true, the entire titlebar (the window's top 22 pixels) is
-// marked as needing redisplay.  This method has been present in the same
-// format since at least OS X 10.5.
-- (void)_tileTitlebarAndRedisplay:(BOOL)redisplay;
-
-// The following undocumented methods are used to work around bug 1069658,
-// which is an Apple bug or design flaw that effects Yosemite.  None of them
-// were present prior to Yosemite (OS X 10.10).
-- (NSView *)titlebarView; // Method of NSThemeFrame
-- (NSView *)titlebarContainerView; // Method of NSThemeFrame
-- (BOOL)transparent; // Method of NSTitlebarView and NSTitlebarContainerView
-- (void)setTransparent:(BOOL)transparent; // Method of NSTitlebarView and
-                                          // NSTitlebarContainerView
-
-@end
-
-@interface ChildView : NSView<
-#ifdef ACCESSIBILITY
-                              mozAccessible,
-#endif
-                              mozView, NSTextInputClient>
-{
-@private
-  // the nsChildView that created the view. It retains this NSView, so
-  // the link back to it must be weak.
-  nsChildView* mGeckoChild;
-
-  // Text input handler for mGeckoChild and us.  Note that this is a weak
-  // reference.  Ideally, this should be a strong reference but a ChildView
-  // object can live longer than the mGeckoChild that owns it.  And if
-  // mTextInputHandler were a strong reference, this would make it difficult
-  // for Gecko's leak detector to detect leaked TextInputHandler objects.
-  // This is initialized by [mozView installTextInputHandler:aHandler] and
-  // cleared by [mozView uninstallTextInputHandler].
-  mozilla::widget::TextInputHandler* mTextInputHandler;  // [WEAK]
-
-  // when mouseDown: is called, we store its event here (strong)
-  NSEvent* mLastMouseDownEvent;
-
-  // Needed for IME support in e10s mode.  Strong.
-  NSEvent* mLastKeyDownEvent;
-
-  // Whether the last mouse down event was blocked from Gecko.
-  BOOL mBlockedLastMouseDown;
-
-  // when acceptsFirstMouse: is called, we store the event here (strong)
-  NSEvent* mClickThroughMouseDownEvent;
-
-  // WheelStart/Stop events should always come in pairs. This BOOL records the
-  // last received event so that, when we receive one of the events, we make sure
-  // to send its pair event first, in case we didn't yet for any reason.
-  BOOL mExpectingWheelStop;
-
-  // Set to YES when our GL surface has been updated and we need to call
-  // updateGLContext before we composite.
-  BOOL mNeedsGLUpdate;
-
-  // Holds our drag service across multiple drag calls. The reference to the
-  // service is obtained when the mouse enters the view and is released when
-  // the mouse exits or there is a drop. This prevents us from having to
-  // re-establish the connection to the service manager many times per second
-  // when handling |draggingUpdated:| messages.
-  nsIDragService* mDragService;
-
-  NSOpenGLContext *mGLContext;
-
-  // Simple gestures support
-  //
-  // mGestureState is used to detect when Cocoa has called both
-  // magnifyWithEvent and rotateWithEvent within the same
-  // beginGestureWithEvent and endGestureWithEvent sequence. We
-  // discard the spurious gesture event so as not to confuse Gecko.
-  //
-  // mCumulativeMagnification keeps track of the total amount of
-  // magnification peformed during a magnify gesture so that we can
-  // send that value with the final MozMagnifyGesture event.
-  //
-  // mCumulativeRotation keeps track of the total amount of rotation
-  // performed during a rotate gesture so we can send that value with
-  // the final MozRotateGesture event.
-  enum {
-    eGestureState_None,
-    eGestureState_StartGesture,
-    eGestureState_MagnifyGesture,
-    eGestureState_RotateGesture
-  } mGestureState;
-  float mCumulativeMagnification;
-  float mCumulativeRotation;
-
-#ifdef __LP64__
-  // Support for fluid swipe tracking.
-  BOOL* mCancelSwipeAnimation;
-#endif
-
-  // Whether this uses off-main-thread compositing.
-  BOOL mUsingOMTCompositor;
-
-  // The mask image that's used when painting into the titlebar using basic
-  // CGContext painting (i.e. non-accelerated).
-  CGImageRef mTopLeftCornerMask;
-
-  // Subviews of self, which act as container views for vibrancy views and
-  // non-draggable views.
-  NSView* mVibrancyViewsContainer;      // [STRONG]
-  NSView* mNonDraggableViewsContainer;  // [STRONG]
-
-  // The view that does our drawing. This is a subview of self so that it can
-  // be ordered on top of mVibrancyViewsContainer.
-  PixelHostingView* mPixelHostingView;
-}
-
-// class initialization
-+ (void)initialize;
-
-+ (void)registerViewForDraggedTypes:(NSView*)aView;
-
-// these are sent to the first responder when the window key status changes
-- (void)viewsWindowDidBecomeKey;
-- (void)viewsWindowDidResignKey;
-
-// Stop NSView hierarchy being changed during [ChildView drawRect:]
-- (void)delayedTearDown;
-
-- (void)sendFocusEvent:(mozilla::EventMessage)eventMessage;
-
-- (void)handleMouseMoved:(NSEvent*)aEvent;
-
-- (void)sendMouseEnterOrExitEvent:(NSEvent*)aEvent
-                            enter:(BOOL)aEnter
-                         exitFrom:(mozilla::WidgetMouseEvent::ExitFrom)aExitFrom;
-
-- (void)updateGLContext;
-- (void)_surfaceNeedsUpdate:(NSNotification*)notification;
-
-- (bool)preRender:(NSOpenGLContext *)aGLContext;
-- (void)postRender:(NSOpenGLContext *)aGLContext;
-
-- (NSView*)vibrancyViewsContainer;
-- (NSView*)nonDraggableViewsContainer;
-- (NSView*)pixelHostingView;
-
-- (BOOL)isCoveringTitlebar;
-
-- (void)viewWillStartLiveResize;
-- (void)viewDidEndLiveResize;
-
-- (NSColor*)vibrancyFillColorForThemeGeometryType:(nsITheme::ThemeGeometryType)aThemeGeometryType;
-- (NSColor*)vibrancyFontSmoothingBackgroundColorForThemeGeometryType:(nsITheme::ThemeGeometryType)aThemeGeometryType;
-
-// Simple gestures support
-//
-// XXX - The swipeWithEvent, beginGestureWithEvent, magnifyWithEvent,
-// rotateWithEvent, and endGestureWithEvent methods are part of a
-// PRIVATE interface exported by nsResponder and reverse-engineering
-// was necessary to obtain the methods' prototypes. Thus, Apple may
-// change the interface in the future without notice.
-//
-// The prototypes were obtained from the following link:
-// http://cocoadex.com/2008/02/nsevent-modifications-swipe-ro.html
-- (void)swipeWithEvent:(NSEvent *)anEvent;
-- (void)beginGestureWithEvent:(NSEvent *)anEvent;
-- (void)magnifyWithEvent:(NSEvent *)anEvent;
-- (void)smartMagnifyWithEvent:(NSEvent *)anEvent;
-- (void)rotateWithEvent:(NSEvent *)anEvent;
-- (void)endGestureWithEvent:(NSEvent *)anEvent;
-
-- (void)scrollWheel:(NSEvent *)anEvent;
-
-- (void)setUsingOMTCompositor:(BOOL)aUseOMTC;
-
-- (NSEvent*)lastKeyDownEvent;
-@end
-
-class ChildViewMouseTracker {
-
-public:
-
-  static void MouseMoved(NSEvent* aEvent);
-  static void MouseScrolled(NSEvent* aEvent);
-  static void OnDestroyView(ChildView* aView);
-  static void OnDestroyWindow(NSWindow* aWindow);
-  static BOOL WindowAcceptsEvent(NSWindow* aWindow, NSEvent* aEvent,
-                                 ChildView* aView, BOOL isClickThrough = NO);
-  static void MouseExitedWindow(NSEvent* aEvent);
-  static void MouseEnteredWindow(NSEvent* aEvent);
-  static void ReEvaluateMouseEnterState(NSEvent* aEvent = nil, ChildView* aOldView = nil);
-  static void ResendLastMouseMoveEvent();
-  static ChildView* ViewForEvent(NSEvent* aEvent);
-
-  static ChildView* sLastMouseEventView;
-  static NSEvent* sLastMouseMoveEvent;
-  static NSWindow* sWindowUnderMouse;
-  static NSPoint sLastScrollEventScreenLocation;
-};
-
-//-------------------------------------------------------------------------
-//
-// nsChildView
-//
-//-------------------------------------------------------------------------
-
-class nsChildView : public nsBaseWidget
-{
-private:
-  typedef nsBaseWidget Inherited;
-  typedef mozilla::layers::IAPZCTreeManager IAPZCTreeManager;
-
-public:
-  nsChildView();
-
-  // nsIWidget interface
-  virtual MOZ_MUST_USE nsresult Create(nsIWidget* aParent,
-                                       nsNativeWidget aNativeParent,
-                                       const LayoutDeviceIntRect& aRect,
-                                       nsWidgetInitData* aInitData = nullptr)
-                                       override;
-
-  virtual void            Destroy() override;
-
-  NS_IMETHOD              Show(bool aState) override;
-  virtual bool            IsVisible() const override;
-
-  NS_IMETHOD              SetParent(nsIWidget* aNewParent) override;
-  virtual nsIWidget*      GetParent(void) override;
-  virtual float           GetDPI() override;
-
-  NS_IMETHOD              Move(double aX, double aY) override;
-  NS_IMETHOD              Resize(double aWidth, double aHeight, bool aRepaint) override;
-  NS_IMETHOD              Resize(double aX, double aY,
-                                 double aWidth, double aHeight, bool aRepaint) override;
-
-  NS_IMETHOD              Enable(bool aState) override;
-  virtual bool            IsEnabled() const override;
-  NS_IMETHOD              SetFocus(bool aRaise) override;
-  virtual LayoutDeviceIntRect GetBounds() override;
-  virtual LayoutDeviceIntRect GetClientBounds() override;
-  virtual LayoutDeviceIntRect GetScreenBounds() override;
-
-  // Returns the "backing scale factor" of the view's window, which is the
-  // ratio of pixels in the window's backing store to Cocoa points. Prior to
-  // HiDPI support in OS X 10.7, this was always 1.0, but in HiDPI mode it
-  // will be 2.0 (and might potentially other values as screen resolutions
-  // evolve). This gives the relationship between what Gecko calls "device
-  // pixels" and the Cocoa "points" coordinate system.
-  CGFloat                 BackingScaleFactor() const;
-
-  mozilla::DesktopToLayoutDeviceScale GetDesktopToDeviceScale() final {
-    return mozilla::DesktopToLayoutDeviceScale(BackingScaleFactor());
-  }
-
-  // Call if the window's backing scale factor changes - i.e., it is moved
-  // between HiDPI and non-HiDPI screens
-  void                    BackingScaleFactorChanged();
-
-  virtual double          GetDefaultScaleInternal() override;
-
-  virtual int32_t         RoundsWidgetCoordinatesTo() override;
-
-  NS_IMETHOD              Invalidate(const LayoutDeviceIntRect &aRect) override;
-
-  virtual void*           GetNativeData(uint32_t aDataType) override;
-  virtual nsresult        ConfigureChildren(const nsTArray<Configuration>& aConfigurations) override;
-  virtual LayoutDeviceIntPoint WidgetToScreenOffset() override;
-  virtual bool            ShowsResizeIndicator(LayoutDeviceIntRect* aResizerRect) override;
-
-  static  bool            ConvertStatus(nsEventStatus aStatus)
-                          { return aStatus == nsEventStatus_eConsumeNoDefault; }
-  NS_IMETHOD              DispatchEvent(mozilla::WidgetGUIEvent* aEvent,
-                                        nsEventStatus& aStatus) override;
-
-  virtual bool            WidgetTypeSupportsAcceleration() override;
-  virtual bool            ShouldUseOffMainThreadCompositing() override;
-
-  NS_IMETHOD        SetCursor(nsCursor aCursor) override;
-  NS_IMETHOD        SetCursor(imgIContainer* aCursor, uint32_t aHotspotX, uint32_t aHotspotY) override;
-
-  NS_IMETHOD        SetTitle(const nsAString& title) override;
-
-  NS_IMETHOD        GetAttention(int32_t aCycleCount) override;
-
-  virtual bool HasPendingInputEvent() override;
-
-  NS_IMETHOD        ActivateNativeMenuItemAt(const nsAString& indexString) override;
-  NS_IMETHOD        ForceUpdateNativeMenuAt(const nsAString& indexString) override;
-  NS_IMETHOD        GetSelectionAsPlaintext(nsAString& aResult) override;
-
-  NS_IMETHOD_(void) SetInputContext(const InputContext& aContext,
-                                    const InputContextAction& aAction) override;
-  NS_IMETHOD_(InputContext) GetInputContext() override;
-  NS_IMETHOD_(TextEventDispatcherListener*)
-    GetNativeTextEventDispatcherListener() override;
-  NS_IMETHOD        AttachNativeKeyEvent(mozilla::WidgetKeyboardEvent& aEvent) override;
-  NS_IMETHOD_(bool) ExecuteNativeKeyBinding(
-                      NativeKeyBindingsType aType,
-                      const mozilla::WidgetKeyboardEvent& aEvent,
-                      DoCommandCallback aCallback,
-                      void* aCallbackData) override;
-  bool ExecuteNativeKeyBindingRemapped(
-                      NativeKeyBindingsType aType,
-                      const mozilla::WidgetKeyboardEvent& aEvent,
-                      DoCommandCallback aCallback,
-                      void* aCallbackData,
-                      uint32_t aGeckoKeyCode,
-                      uint32_t aCocoaKeyCode);
-  virtual nsIMEUpdatePreference GetIMEUpdatePreference() override;
-
-  virtual nsTransparencyMode GetTransparencyMode() override;
-  virtual void                SetTransparencyMode(nsTransparencyMode aMode) override;
-
-  virtual nsresult SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout,
-                                            int32_t aNativeKeyCode,
-                                            uint32_t aModifierFlags,
-                                            const nsAString& aCharacters,
-                                            const nsAString& aUnmodifiedCharacters,
-                                            nsIObserver* aObserver) override;
-
-  virtual nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint,
-                                              uint32_t aNativeMessage,
-                                              uint32_t aModifierFlags,
-                                              nsIObserver* aObserver) override;
-
-  virtual nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint,
-                                             nsIObserver* aObserver) override
-  { return SynthesizeNativeMouseEvent(aPoint, NSMouseMoved, 0, aObserver); }
-  virtual nsresult SynthesizeNativeMouseScrollEvent(LayoutDeviceIntPoint aPoint,
-                                                    uint32_t aNativeMessage,
-                                                    double aDeltaX,
-                                                    double aDeltaY,
-                                                    double aDeltaZ,
-                                                    uint32_t aModifierFlags,
-                                                    uint32_t aAdditionalFlags,
-                                                    nsIObserver* aObserver) override;
-  virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
-                                              TouchPointerState aPointerState,
-                                              LayoutDeviceIntPoint aPoint,
-                                              double aPointerPressure,
-                                              uint32_t aPointerOrientation,
-                                              nsIObserver* aObserver) override;
-
-  // Mac specific methods
-
-  virtual bool      DispatchWindowEvent(mozilla::WidgetGUIEvent& event);
-
-  void WillPaintWindow();
-  bool PaintWindow(LayoutDeviceIntRegion aRegion);
-  bool PaintWindowInContext(CGContextRef aContext, const LayoutDeviceIntRegion& aRegion,
-                            mozilla::gfx::IntSize aSurfaceSize);
-
-#ifdef ACCESSIBILITY
-  already_AddRefed<mozilla::a11y::Accessible> GetDocumentAccessible();
-#endif
-
-  virtual void CreateCompositor() override;
-  virtual void PrepareWindowEffects() override;
-  virtual void CleanupWindowEffects() override;
-  virtual bool PreRender(mozilla::widget::WidgetRenderingContext* aContext) override;
-  virtual void PostRender(mozilla::widget::WidgetRenderingContext* aContext) override;
-  virtual void DrawWindowOverlay(mozilla::widget::WidgetRenderingContext* aManager,
-                                 LayoutDeviceIntRect aRect) override;
-
-  virtual void UpdateThemeGeometries(const nsTArray<ThemeGeometry>& aThemeGeometries) override;
-
-  virtual void UpdateWindowDraggingRegion(const LayoutDeviceIntRegion& aRegion) override;
-  LayoutDeviceIntRegion GetNonDraggableRegion() { return mNonDraggableRegion.Region(); }
-
-  virtual void ReportSwipeStarted(uint64_t aInputBlockId, bool aStartSwipe) override;
-
-  virtual void LookUpDictionary(
-                 const nsAString& aText,
-                 const nsTArray<mozilla::FontRange>& aFontRangeArray,
-                 const bool aIsVertical,
-                 const LayoutDeviceIntPoint& aPoint) override;
-
-  void              ResetParent();
-
-  static bool DoHasPendingInputEvent();
-  static uint32_t GetCurrentInputEventCount();
-  static void UpdateCurrentInputEventCount();
-
-  NSView<mozView>* GetEditorView();
-
-  nsCocoaWindow*    GetXULWindowWidget();
-
-  virtual void      ReparentNativeWidget(nsIWidget* aNewParent) override;
-
-  mozilla::widget::TextInputHandler* GetTextInputHandler()
-  {
-    return mTextInputHandler;
-  }
-
-  void              ClearVibrantAreas();
-  NSColor*          VibrancyFillColorForThemeGeometryType(nsITheme::ThemeGeometryType aThemeGeometryType);
-  NSColor*          VibrancyFontSmoothingBackgroundColorForThemeGeometryType(nsITheme::ThemeGeometryType aThemeGeometryType);
-
-  // unit conversion convenience functions
-  int32_t           CocoaPointsToDevPixels(CGFloat aPts) const {
-    return nsCocoaUtils::CocoaPointsToDevPixels(aPts, BackingScaleFactor());
-  }
-  LayoutDeviceIntPoint CocoaPointsToDevPixels(const NSPoint& aPt) const {
-    return nsCocoaUtils::CocoaPointsToDevPixels(aPt, BackingScaleFactor());
-  }
-  LayoutDeviceIntPoint CocoaPointsToDevPixelsRoundDown(const NSPoint& aPt) const {
-    return nsCocoaUtils::CocoaPointsToDevPixelsRoundDown(aPt, BackingScaleFactor());
-  }
-  LayoutDeviceIntRect CocoaPointsToDevPixels(const NSRect& aRect) const {
-    return nsCocoaUtils::CocoaPointsToDevPixels(aRect, BackingScaleFactor());
-  }
-  CGFloat           DevPixelsToCocoaPoints(int32_t aPixels) const {
-    return nsCocoaUtils::DevPixelsToCocoaPoints(aPixels, BackingScaleFactor());
-  }
-  NSRect            DevPixelsToCocoaPoints(const LayoutDeviceIntRect& aRect) const {
-    return nsCocoaUtils::DevPixelsToCocoaPoints(aRect, BackingScaleFactor());
-  }
-
-  already_AddRefed<mozilla::gfx::DrawTarget>
-    StartRemoteDrawingInRegion(LayoutDeviceIntRegion& aInvalidRegion,
-                               mozilla::layers::BufferMode* aBufferMode) override;
-  void EndRemoteDrawing() override;
-  void CleanupRemoteDrawing() override;
-  bool InitCompositor(mozilla::layers::Compositor* aCompositor) override;
-
-  NS_IMETHOD StartPluginIME(const mozilla::WidgetKeyboardEvent& aKeyboardEvent,
-                            int32_t aPanelX, int32_t aPanelY,
-                            nsString& aCommitted) override;
-
-  virtual void SetPluginFocused(bool& aFocused) override;
-
-  bool IsPluginFocused() { return mPluginFocused; }
-
-  virtual LayoutDeviceIntPoint GetClientOffset() override;
-
-  void DispatchAPZWheelInputEvent(mozilla::InputData& aEvent, bool aCanTriggerSwipe);
-
-  void SwipeFinished();
-
-protected:
-  virtual ~nsChildView();
-
-  void              ReportMoveEvent();
-  void              ReportSizeEvent();
-
-  void              TearDownView();
-
-  virtual already_AddRefed<nsIWidget>
-  AllocateChildPopupWidget() override
-  {
-    static NS_DEFINE_IID(kCPopUpCID, NS_POPUP_CID);
-    nsCOMPtr<nsIWidget> widget = do_CreateInstance(kCPopUpCID);
-    return widget.forget();
-  }
-
-  void ConfigureAPZCTreeManager() override;
-  void ConfigureAPZControllerThread() override;
-
-  void DoRemoteComposition(const LayoutDeviceIntRect& aRenderRect);
-
-  // Overlay drawing functions for OpenGL drawing
-  void DrawWindowOverlay(mozilla::layers::GLManager* aManager, LayoutDeviceIntRect aRect);
-  void MaybeDrawResizeIndicator(mozilla::layers::GLManager* aManager);
-  void MaybeDrawRoundedCorners(mozilla::layers::GLManager* aManager, const LayoutDeviceIntRect& aRect);
-  void MaybeDrawTitlebar(mozilla::layers::GLManager* aManager);
-
-  // Redraw the contents of mTitlebarCGContext on the main thread, as
-  // determined by mDirtyTitlebarRegion.
-  void UpdateTitlebarCGContext();
-
-  LayoutDeviceIntRect RectContainingTitlebarControls();
-  void UpdateVibrancy(const nsTArray<ThemeGeometry>& aThemeGeometries);
-  mozilla::VibrancyManager& EnsureVibrancyManager();
-
-  nsIWidget* GetWidgetForListenerEvents();
-
-  struct SwipeInfo {
-    bool wantsSwipe;
-    uint32_t allowedDirections;
-  };
-
-  SwipeInfo SendMayStartSwipe(const mozilla::PanGestureInput& aSwipeStartEvent);
-  void TrackScrollEventAsSwipe(const mozilla::PanGestureInput& aSwipeStartEvent,
-                               uint32_t aAllowedDirections);
-
-protected:
-
-  ChildView<mozView>* mView;  // my parallel cocoa view, [STRONG]
-  RefPtr<mozilla::widget::TextInputHandler> mTextInputHandler;
-  InputContext          mInputContext;
-
-  NSView<mozView>*      mParentView;
-  nsIWidget*            mParentWidget;
-
-#ifdef ACCESSIBILITY
-  // weak ref to this childview's associated mozAccessible for speed reasons
-  // (we get queried for it *a lot* but don't want to own it)
-  nsWeakPtr             mAccessible;
-#endif
-
-  // Protects the view from being teared down while a composition is in
-  // progress on the compositor thread.
-  mozilla::Mutex mViewTearDownLock;
-
-  mozilla::Mutex mEffectsLock;
-
-  // May be accessed from any thread, protected
-  // by mEffectsLock.
-  bool mShowsResizeIndicator;
-  LayoutDeviceIntRect mResizeIndicatorRect;
-  bool mHasRoundedBottomCorners;
-  int mDevPixelCornerRadius;
-  bool mIsCoveringTitlebar;
-  bool mIsFullscreen;
-  bool mIsOpaque;
-  LayoutDeviceIntRect mTitlebarRect;
-
-  // The area of mTitlebarCGContext that needs to be redrawn during the next
-  // transaction. Accessed from any thread, protected by mEffectsLock.
-  LayoutDeviceIntRegion mUpdatedTitlebarRegion;
-  CGContextRef mTitlebarCGContext;
-
-  // Compositor thread only
-  mozilla::UniquePtr<mozilla::widget::RectTextureImage> mResizerImage;
-  mozilla::UniquePtr<mozilla::widget::RectTextureImage> mCornerMaskImage;
-  mozilla::UniquePtr<mozilla::widget::RectTextureImage> mTitlebarImage;
-  mozilla::UniquePtr<mozilla::widget::RectTextureImage> mBasicCompositorImage;
-
-  // The area of mTitlebarCGContext that has changed and needs to be
-  // uploaded to to mTitlebarImage. Main thread only.
-  nsIntRegion           mDirtyTitlebarRegion;
-
-  mozilla::ViewRegion   mNonDraggableRegion;
-
-  // Cached value of [mView backingScaleFactor], to avoid sending two obj-c
-  // messages (respondsToSelector, backingScaleFactor) every time we need to
-  // use it.
-  // ** We'll need to reinitialize this if the backing resolution changes. **
-  mutable CGFloat       mBackingScaleFactor;
-
-  bool                  mVisible;
-  bool                  mDrawing;
-  bool                  mIsDispatchPaint; // Is a paint event being dispatched
-
-  bool mPluginFocused;
-
-  // Used in OMTC BasicLayers mode. Presents the BasicCompositor result
-  // surface to the screen using an OpenGL context.
-  mozilla::UniquePtr<GLPresenter> mGLPresenter;
-
-  mozilla::UniquePtr<mozilla::VibrancyManager> mVibrancyManager;
-  RefPtr<mozilla::SwipeTracker> mSwipeTracker;
-  mozilla::UniquePtr<mozilla::SwipeEventQueue> mSwipeEventQueue;
-
-  // Only used for drawRect-based painting in popups.
-  RefPtr<mozilla::gfx::DrawTarget> mBackingSurface;
-
-  // This flag is only used when APZ is off. It indicates that the current pan
-  // gesture was processed as a swipe. Sometimes the swipe animation can finish
-  // before momentum events of the pan gesture have stopped firing, so this
-  // flag tells us that we shouldn't allow the remaining events to cause
-  // scrolling. It is reset to false once a new gesture starts (as indicated by
-  // a PANGESTURE_(MAY)START event).
-  bool mCurrentPanGestureBelongsToSwipe;
-
-  static uint32_t sLastInputEventCount;
-
-  void ReleaseTitlebarCGContext();
-
-  // This is used by SynthesizeNativeTouchPoint to maintain state between
-  // multiple synthesized points
-  mozilla::UniquePtr<mozilla::MultiTouchInput> mSynthesizedTouchInput;
-};
-
-#endif // nsChildView_h_