forked from mirrors/gecko-dev
		
	I don't think all this complexity is worth it for having a marginally-more-realistic testing story. Using the pref just works and we should do that, I think. Differential Revision: https://phabricator.services.mozilla.com/D59980
		
			
				
	
	
		
			396 lines
		
	
	
	
		
			13 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			396 lines
		
	
	
	
		
			13 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/* -*- Mode: c++; c-basic-offset: 2; tab-width: 20; indent-tabs-mode: nil; -*-
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 * vim: set sw=2 ts=4 expandtab:
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 * This Source Code Form is subject to the terms of the Mozilla Public
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef NSWINDOW_H_
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#define NSWINDOW_H_
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#include "nsBaseWidget.h"
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#include "gfxPoint.h"
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#include "nsIIdleServiceInternal.h"
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#include "nsTArray.h"
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#include "EventDispatcher.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/java/GeckoBundleWrappers.h"
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#include "mozilla/MozPromise.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/StaticPtr.h"
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#include "mozilla/TextRange.h"
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#include "mozilla/UniquePtr.h"
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struct ANPEvent;
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namespace mozilla {
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class WidgetTouchEvent;
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namespace layers {
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class CompositorBridgeChild;
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class LayerManager;
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class APZCTreeManager;
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class UiCompositorControllerChild;
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}  // namespace layers
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namespace widget {
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class GeckoEditableSupport;
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}  // namespace widget
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namespace ipc {
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class Shmem;
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}  // namespace ipc
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namespace a11y {
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class SessionAccessibility;
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}
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}  // namespace mozilla
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class nsWindow final : public nsBaseWidget {
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 private:
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  virtual ~nsWindow();
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 public:
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  using nsBaseWidget::GetLayerManager;
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  nsWindow();
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  NS_INLINE_DECL_REFCOUNTING_INHERITED(nsWindow, nsBaseWidget)
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  static void InitNatives();
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  void SetScreenId(uint32_t aScreenId) { mScreenId = aScreenId; }
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  void OnGeckoViewReady();
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  RefPtr<mozilla::MozPromise<bool, bool, false>> OnLoadRequest(
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      nsIURI* aUri, int32_t aWindowType, int32_t aFlags,
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      nsIPrincipal* aTriggeringPrincipal, bool aHasUserGesture,
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      bool aIsTopLevel);
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 private:
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  uint32_t mScreenId;
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  // An Event subclass that guards against stale events.
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  template <typename Lambda, bool IsStatic = Lambda::isStatic,
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            typename InstanceType = typename Lambda::ThisArgType,
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            class Impl = typename Lambda::TargetClass>
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  class WindowEvent;
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 public:
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  // Smart pointer for holding a pointer back to the nsWindow inside a native
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  // object class. The nsWindow pointer is automatically cleared when the
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  // nsWindow is destroyed, and a WindowPtr<Impl>::Locked class is provided
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  // for thread-safe access to the nsWindow pointer off of the Gecko thread.
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  template <class Impl>
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  class WindowPtr;
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  // Smart pointer for holding a pointer to a native object class. The
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  // pointer is automatically cleared when the object is destroyed.
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  template <class Impl>
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  class NativePtr final {
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    friend WindowPtr<Impl>;
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    friend nsWindow;
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    static const char sName[];
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    WindowPtr<Impl>* mPtr;
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    Impl* mImpl;
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    mozilla::Mutex mImplLock;
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    NativePtr() : mPtr(nullptr), mImpl(nullptr), mImplLock(sName) {}
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    ~NativePtr() { MOZ_ASSERT(!mPtr); }
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   public:
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    class Locked;
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    operator Impl*() const {
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      MOZ_ASSERT(NS_IsMainThread());
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      return mImpl;
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    }
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    Impl* operator->() const { return operator Impl*(); }
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    template <class Cls, typename... Args>
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    void Attach(const mozilla::jni::LocalRef<Cls>& aInstance, nsWindow* aWindow,
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                Args&&... aArgs);
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    template <class Cls, typename T>
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    void Detach(const mozilla::jni::Ref<Cls, T>& aInstance);
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  };
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  template <class Impl>
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  class WindowPtr final {
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    friend NativePtr<Impl>;
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    NativePtr<Impl>* mPtr;
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    nsWindow* mWindow;
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    mozilla::Mutex mWindowLock;
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   public:
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    class Locked final : private mozilla::MutexAutoLock {
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      nsWindow* const mWindow;
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     public:
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      explicit Locked(WindowPtr<Impl>& aPtr)
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          : mozilla::MutexAutoLock(aPtr.mWindowLock), mWindow(aPtr.mWindow) {}
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      operator nsWindow*() const { return mWindow; }
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      nsWindow* operator->() const { return mWindow; }
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    };
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    WindowPtr(NativePtr<Impl>* aPtr, nsWindow* aWindow);
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    ~WindowPtr() {
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      MOZ_ASSERT(NS_IsMainThread());
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      if (!mPtr) {
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        return;
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      }
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      mPtr->mPtr = nullptr;
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      mPtr->mImpl = nullptr;
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    }
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    operator nsWindow*() const {
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      MOZ_ASSERT(NS_IsMainThread());
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      return mWindow;
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    }
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    nsWindow* operator->() const { return operator nsWindow*(); }
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  };
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 private:
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  class AndroidView final : public nsIAndroidView {
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    virtual ~AndroidView() {}
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   public:
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    const RefPtr<mozilla::widget::EventDispatcher> mEventDispatcher{
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        new mozilla::widget::EventDispatcher()};
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    AndroidView() {}
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    NS_DECL_ISUPPORTS
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    NS_DECL_NSIANDROIDVIEW
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    NS_FORWARD_NSIANDROIDEVENTDISPATCHER(mEventDispatcher->)
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    mozilla::java::GeckoBundle::GlobalRef mInitData;
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  };
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  RefPtr<AndroidView> mAndroidView;
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  class LayerViewSupport;
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  // Object that implements native LayerView calls.
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  // Owned by the Java LayerView instance.
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  NativePtr<LayerViewSupport> mLayerViewSupport;
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  class NPZCSupport;
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  // Object that implements native NativePanZoomController calls.
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  // Owned by the Java NativePanZoomController instance.
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  NativePtr<NPZCSupport> mNPZCSupport;
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  // Object that implements native GeckoEditable calls.
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  // Strong referenced by the Java instance.
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  NativePtr<mozilla::widget::GeckoEditableSupport> mEditableSupport;
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  mozilla::jni::Object::GlobalRef mEditableParent;
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  // Object that implements native SessionAccessibility calls.
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  // Strong referenced by the Java instance.
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  NativePtr<mozilla::a11y::SessionAccessibility> mSessionAccessibility;
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  class GeckoViewSupport;
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  // Object that implements native GeckoView calls and associated states.
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  // nullptr for nsWindows that were not opened from GeckoView.
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  // Because other objects get destroyed in the mGeckOViewSupport destructor,
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  // keep it last in the list, so its destructor is called first.
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  mozilla::UniquePtr<GeckoViewSupport> mGeckoViewSupport;
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  mozilla::Atomic<bool, mozilla::ReleaseAcquire> mContentDocumentDisplayed;
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 public:
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  static already_AddRefed<nsWindow> From(nsPIDOMWindowOuter* aDOMWindow);
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  static already_AddRefed<nsWindow> From(nsIWidget* aWidget);
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  static nsWindow* TopWindow();
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  static mozilla::Modifiers GetModifiers(int32_t aMetaState);
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  static mozilla::TimeStamp GetEventTimeStamp(int64_t aEventTime);
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  void OnSizeChanged(const mozilla::gfx::IntSize& aSize);
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  void InitEvent(mozilla::WidgetGUIEvent& event,
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                 LayoutDeviceIntPoint* aPoint = 0);
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  void UpdateOverscrollVelocity(const float aX, const float aY);
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  void UpdateOverscrollOffset(const float aX, const float aY);
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  mozilla::widget::EventDispatcher* GetEventDispatcher() const {
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    if (mAndroidView) {
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      return mAndroidView->mEventDispatcher;
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    }
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    return nullptr;
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  }
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  void NotifyDisablingWebRender();
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  //
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  // nsIWidget
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  //
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  using nsBaseWidget::Create;  // for Create signature not overridden here
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  [[nodiscard]] virtual nsresult Create(nsIWidget* aParent,
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                                        nsNativeWidget aNativeParent,
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                                        const LayoutDeviceIntRect& aRect,
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                                        nsWidgetInitData* aInitData) override;
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  virtual void Destroy() override;
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  virtual nsresult ConfigureChildren(
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      const nsTArray<nsIWidget::Configuration>&) override;
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  virtual void SetParent(nsIWidget* aNewParent) override;
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  virtual nsIWidget* GetParent(void) override;
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  virtual float GetDPI() override;
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  virtual double GetDefaultScaleInternal() override;
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  virtual void Show(bool aState) override;
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  virtual bool IsVisible() const override;
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  virtual void ConstrainPosition(bool aAllowSlop, int32_t* aX,
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                                 int32_t* aY) override;
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  virtual void Move(double aX, double aY) override;
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  virtual void Resize(double aWidth, double aHeight, bool aRepaint) override;
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  virtual void Resize(double aX, double aY, double aWidth, double aHeight,
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                      bool aRepaint) override;
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  void SetZIndex(int32_t aZIndex) override;
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  virtual void SetSizeMode(nsSizeMode aMode) override;
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  virtual void Enable(bool aState) override;
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  virtual bool IsEnabled() const override;
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  virtual void Invalidate(const LayoutDeviceIntRect& aRect) override;
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  virtual void SetFocus(Raise, mozilla::dom::CallerType aCallerType) override;
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  virtual LayoutDeviceIntRect GetScreenBounds() override;
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  virtual LayoutDeviceIntPoint WidgetToScreenOffset() override;
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  virtual nsresult DispatchEvent(mozilla::WidgetGUIEvent* aEvent,
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                                 nsEventStatus& aStatus) override;
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  nsEventStatus DispatchEvent(mozilla::WidgetGUIEvent* aEvent);
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  virtual already_AddRefed<nsIScreen> GetWidgetScreen() override;
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  virtual nsresult MakeFullScreen(bool aFullScreen,
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                                  nsIScreen* aTargetScreen = nullptr) override;
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  void SetCursor(nsCursor aDefaultCursor, imgIContainer* aImageCursor,
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                 uint32_t aHotspotX, uint32_t aHotspotY) override {}
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  void* GetNativeData(uint32_t aDataType) override;
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  void SetNativeData(uint32_t aDataType, uintptr_t aVal) override;
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  virtual nsresult SetTitle(const nsAString& aTitle) override { return NS_OK; }
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  [[nodiscard]] virtual nsresult GetAttention(int32_t aCycleCount) override {
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    return NS_ERROR_NOT_IMPLEMENTED;
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  }
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  TextEventDispatcherListener* GetNativeTextEventDispatcherListener() override;
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  virtual void SetInputContext(const InputContext& aContext,
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                               const InputContextAction& aAction) override;
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  virtual InputContext GetInputContext() override;
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  LayerManager* GetLayerManager(
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      PLayerTransactionChild* aShadowManager = nullptr,
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      LayersBackend aBackendHint = mozilla::layers::LayersBackend::LAYERS_NONE,
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      LayerManagerPersistence aPersistence = LAYER_MANAGER_CURRENT) override;
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  virtual bool NeedsPaint() override;
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  virtual bool WidgetPaintsBackground() override;
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  virtual uint32_t GetMaxTouchPoints() const override;
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  void UpdateZoomConstraints(
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      const uint32_t& aPresShellId, const ScrollableLayerGuid::ViewID& aViewId,
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      const mozilla::Maybe<ZoomConstraints>& aConstraints) override;
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  nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
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                                      TouchPointerState aPointerState,
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                                      LayoutDeviceIntPoint aPoint,
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                                      double aPointerPressure,
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                                      uint32_t aPointerOrientation,
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                                      nsIObserver* aObserver) override;
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  nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint,
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                                      uint32_t aNativeMessage,
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                                      uint32_t aModifierFlags,
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                                      nsIObserver* aObserver) override;
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  nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint,
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                                     nsIObserver* aObserver) override;
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  mozilla::layers::CompositorBridgeChild* GetCompositorBridgeChild() const;
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  void SetContentDocumentDisplayed(bool aDisplayed);
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  bool IsContentDocumentDisplayed();
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  // Call this function when the users activity is the direct cause of an
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  // event (like a keypress or mouse click).
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  void UserActivity();
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  mozilla::jni::Object::Ref& GetEditableParent() { return mEditableParent; }
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  mozilla::a11y::SessionAccessibility* GetSessionAccessibility() {
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    return mSessionAccessibility;
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  }
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  void RecvToolbarAnimatorMessageFromCompositor(int32_t aMessage) override;
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  void UpdateRootFrameMetrics(const ScreenPoint& aScrollOffset,
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                              const CSSToScreenScale& aZoom) override;
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  void RecvScreenPixels(mozilla::ipc::Shmem&& aMem,
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                        const ScreenIntSize& aSize) override;
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  void UpdateDynamicToolbarMaxHeight(mozilla::ScreenIntCoord aHeight) override;
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  mozilla::ScreenIntCoord GetDynamicToolbarMaxHeight() const override {
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    return mDynamicToolbarMaxHeight;
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  }
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  void UpdateDynamicToolbarOffset(mozilla::ScreenIntCoord aOffset);
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  virtual mozilla::ScreenIntMargin GetSafeAreaInsets() const override;
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  void UpdateSafeAreaInsets(const mozilla::ScreenIntMargin& aSafeAreaInsets);
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 protected:
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  void BringToFront();
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  nsWindow* FindTopLevel();
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  bool IsTopLevel();
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  void ConfigureAPZControllerThread() override;
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  void DispatchHitTest(const mozilla::WidgetTouchEvent& aEvent);
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  already_AddRefed<GeckoContentController> CreateRootContentController()
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      override;
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  bool mIsVisible;
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  nsTArray<nsWindow*> mChildren;
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  nsWindow* mParent;
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  nsCOMPtr<nsIIdleServiceInternal> mIdleService;
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  mozilla::ScreenIntCoord mDynamicToolbarMaxHeight;
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  mozilla::ScreenIntMargin mSafeAreaInsets;
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  bool mIsFullScreen;
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  bool mIsDisablingWebRender;
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  bool UseExternalCompositingSurface() const override { return true; }
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  static void DumpWindows();
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  static void DumpWindows(const nsTArray<nsWindow*>& wins, int indent = 0);
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  static void LogWindow(nsWindow* win, int index, int indent);
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 private:
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  void CreateLayerManager();
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  void RedrawAll();
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  mozilla::layers::LayersId GetRootLayerId() const;
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  RefPtr<mozilla::layers::UiCompositorControllerChild>
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  GetUiCompositorControllerChild();
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};
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// Explicit template declarations to make clang be quiet.
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template <>
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const char nsWindow::NativePtr<nsWindow::LayerViewSupport>::sName[];
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template <>
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const char nsWindow::NativePtr<mozilla::widget::GeckoEditableSupport>::sName[];
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template <>
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const char nsWindow::NativePtr<mozilla::a11y::SessionAccessibility>::sName[];
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template <>
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const char nsWindow::NativePtr<nsWindow::NPZCSupport>::sName[];
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template <class Impl>
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nsWindow::WindowPtr<Impl>::WindowPtr(NativePtr<Impl>* aPtr, nsWindow* aWindow)
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    : mPtr(aPtr), mWindow(aWindow), mWindowLock(NativePtr<Impl>::sName) {
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  MOZ_ASSERT(NS_IsMainThread());
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  if (mPtr) {
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    mPtr->mPtr = this;
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  }
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}
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#endif /* NSWINDOW_H_ */
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