SlateAsyncTaskNotificationImpl.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Misc/CoreAsyncTaskNotificationImpl.h"
#include "Containers/Ticker.h"
#include "Layout/Visibility.h"
#include "Widgets/Notifications/SNotificationList.h"
 
class SSlateAsyncTaskNotificationWidget;
 
class FSlateAsyncTaskNotificationImpl : public TSharedFromThis<FSlateAsyncTaskNotificationImpl, ESPMode::ThreadSafe>,  public FCoreAsyncTaskNotificationImpl
{
public:
    //~ IAsyncTaskNotificationImpl
    virtual void Initialize(const FAsyncTaskNotificationConfig& InConfig) override;
    virtual void SetCanCancel(const TAttribute<bool>& InCanCancel) override;
    virtual void SetKeepOpenOnSuccess(const TAttribute<bool>& InKeepOpenOnSuccess) override;
    virtual void SetKeepOpenOnFailure(const TAttribute<bool>& InKeepOpenOnFailure) override;
    virtual EAsyncTaskNotificationPromptAction GetPromptAction() const override;
 
    FSlateAsyncTaskNotificationImpl();
    virtual ~FSlateAsyncTaskNotificationImpl() override;
    
private:
    //~ FCoreAsyncTaskNotificationImpl
    virtual void UpdateNotification() override;
 
    bool TickNotification(float InDeltaTime);
 
    void SyncAttributes();
 
    void SetPendingNotificationState(const EAsyncTaskNotificationState InPendingCompletionState);
 
    bool IsCancelButtonEnabled(SNotificationItem::ECompletionState InState) const;
    EVisibility GetCancelButtonVisibility(SNotificationItem::ECompletionState InState) const;
    void OnCancelButtonClicked();
 
    bool IsPromptButtonEnabled(SNotificationItem::ECompletionState InState) const;
    EVisibility GetPromptButtonVisibility(SNotificationItem::ECompletionState InState) const;
    void OnPromptButtonClicked();
    FText GetPromptButtonText() const;
 
    EVisibility GetCloseButtonVisibility(SNotificationItem::ECompletionState InState) const;
    void OnCloseButtonClicked();
 
    /* Create the notification, if not already created */
    void CreateNotification();
 
    /* Cleanly destroy the current notification, if any */
    void DestroyNotification();
 
    /* Static function to update the notification from the main thread */
    static bool UpdateNotificationDeferred(float InDeltaTime, TWeakPtr<FSlateAsyncTaskNotificationImpl> WeakThis, TSharedPtr<SNotificationItem> OwningNotification, FText TitleText, FText ProgressText, FText PromptText, FSimpleDelegate Hyperlink, FText HyperlinkText);
 
private:
 
    FAsyncTaskNotificationConfig NotificationConfig;
 
    FTSTicker::FDelegateHandle TickerHandle;
 
    TAtomic<EAsyncTaskNotificationPromptAction> PromptAction;
 
    FText PromptButtonText;
 
    TAttribute<bool> bCanCancelAttr = false;
    bool bCanCancel = false;
 
    TAttribute<bool> bKeepOpenOnSuccessAttr = false;
    bool bKeepOpenOnSuccess = false;
 
    TAttribute<bool> bKeepOpenOnFailureAttr = false;
    bool bKeepOpenOnFailure = false;
 
    bool bInitializedNotification = false;
 
    EAsyncTaskNotificationState CurrentNotificationState = EAsyncTaskNotificationState::None;
 
    TOptional<EAsyncTaskNotificationState> PendingNotificationState;
 
    TSharedPtr<SNotificationItem> OwningNotification;
 
    FCriticalSection AttributesCS;
 
    FCriticalSection CompletionCS;
};