WindowsUIAManager.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#if WITH_ACCESSIBILITY && UE_WINDOWS_USING_UIA
 
#include "Templates/SharedPointer.h"
#include "GenericPlatform/Accessibility/GenericAccessibleInterfaces.h"
 
class FWindowsApplication;
class FWindowsWindow;
class FWindowsUIAControlProvider;
class FWindowsUIAWidgetProvider;
class FWindowsUIAWindowProvider;
class IAccessibleWidget;
class FVariant;
 
class FWindowsUIAManager
{
    friend class FWindowsUIABaseProvider;
public:
    FWindowsUIAManager(const FWindowsApplication& InApplication);
    ~FWindowsUIAManager();
 
    FWindowsUIAWidgetProvider& GetWidgetProvider(TSharedRef<IAccessibleWidget> InWidget);
 
    FWindowsUIAWindowProvider& GetWindowProvider(TSharedRef<FWindowsWindow> InWindow);
 
    void OnWidgetProviderRemoved(TSharedRef<IAccessibleWidget> InWidget);
 
    void OnAccessibleMessageHandlerChanged();
 
    uint32 GetCachedCurrentLocaleLCID() const { return CachedCurrentLocaleLCID; }
 
    void RunInGameThreadBlocking(const TFunction<void()>& Function) const;
 
    static TMap<EAccessibleWidgetType, ULONG> WidgetTypeToWindowsTypeMap;
    static TMap<EAccessibleWidgetType, FText> WidgetTypeToTextMap;
 
#if !UE_BUILD_SHIPPING
    void DumpAccessibilityStats() const;
#endif
 
private:
    void OnEventRaised(const FAccessibleEventArgs& Args);
 
    void OnAccessibilityEnabled(); 
 
    void OnAccessibilityDisabled();
 
    void UpdateCachedCurrentLocaleLCID();
 
    TMap<TSharedRef<IAccessibleWidget>, FWindowsUIAWidgetProvider*> CachedWidgetProviders;
    TSet<FWindowsUIABaseProvider*> ProviderList;
    const FWindowsApplication& WindowsApplication;
 
    FDelegateHandle OnCultureChangedHandle; 
    
    uint32 CachedCurrentLocaleLCID;
};
 
#endif