ToastRootHUDWidget.h

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// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Table/Toast/DT_ToastMessageTable.h"
#include "TimerManager.h"
#include "Interface/Level/StageEventListenerInterface.h"
#include "UI/StageEventListenableUserWidget.h"
#include "UI/UserWidgetBase.h"
#include "ToastRootHUDWidget.generated.h"
 
class UStackBox;
class UDataTable;
class UToastWidgetBase;
 
USTRUCT()
struct FActiveToastWidgetEntry
{
    GENERATED_BODY()
 
public:
    UPROPERTY()
    TObjectPtr<UToastWidgetBase> ToastWidget;
 
public:
    int32 GroupID = 0;
    FTimerHandle DurationTimerHandle;
};
 
USTRUCT()
struct FPendingToastWidgetEntry
{
    GENERATED_BODY()
 
public:
    UPROPERTY()
    FDT_ToastMessageTable ToastData;
};
 
UCLASS(BlueprintType, Blueprintable)
class CK_UE_API UToastRootHUDWidget : public UStageEventListenableUserWidget
{
    GENERATED_BODY()
 
public:
    UFUNCTION(BlueprintCallable, Category = "UI|Toast")
    bool ShowToastByID(const int32 ToastID, const bool bApplyImmediately = false);
 
    UFUNCTION(BlueprintCallable, Category = "UI|Toast")
    bool ShowToastByRowName(const FName ToastRowName, const bool bApplyImmediately = false);
 
    UFUNCTION(BlueprintCallable, Category = "UI|Toast")
    void ShowToast(const FDT_ToastMessageTable& InToastData, const bool bApplyImmediately = false);
 
    UFUNCTION(BlueprintCallable, Category = "UI|Toast")
    void SetToastDataTable(UDataTable* InToastDataTable);
 
    UFUNCTION(BlueprintPure, Category = "UI|Toast")
    UDataTable* GetToastDataTable() const;
 
protected:
    virtual void NativeDestruct() override;
 
protected:
    bool CanAddToastWidget() const;
    void EnqueueToast(const FDT_ToastMessageTable& InToastData);
    void ProcessPendingToastQueue();
    void ShowToastInternal(const FDT_ToastMessageTable& InToastData);
    void AddToastWidget(UToastWidgetBase* ToastWidget, const FDT_ToastMessageTable& InToastData);
    bool TryUpdateActiveToastByGroup(const FDT_ToastMessageTable& InToastData);
    void RequestOldestToastExit();
    void StartToastDurationTimer(UToastWidgetBase* ToastWidget, const float ToastDuration);
    void RequestToastExit(UToastWidgetBase* ToastWidget);
    void RemoveToastWidget(UToastWidgetBase* ToastWidget);
    bool TryShowNextToastInGroup(UToastWidgetBase* ToastWidget);
    const FDT_ToastMessageTable* FindNextToastRowInGroup(const FDT_ToastMessageTable& CurrentToastData);
 
    UToastWidgetBase* CreateToastWidget(const FDT_ToastMessageTable& InToastData);
    int32 FindActiveToastIndex(const UToastWidgetBase* ToastWidget) const;
    int32 FindActiveToastIndexByGroupID(const int32 GroupID) const;
    UDataTable* ResolveToastDataTable();
 
protected:
    UFUNCTION(BlueprintImplementableEvent, Category = "UI|Toast")
    void OnToastRequested(const FDT_ToastMessageTable& InToastData);
 
protected:
    UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "UI|Toast")
    TSubclassOf<UToastWidgetBase> ToastWidgetClass;
 
    UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "UI|Toast", meta = (ClampMin = "1"))
    int32 MaxStackCount = 3;
 
    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "UI|Toast")
    TObjectPtr<UDataTable> CachedToastDataTable;
 
    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "UI|Toast", meta = (BindWidget))
    TObjectPtr<UStackBox> ToastMessageStack;
 
    UPROPERTY()
    TArray<FActiveToastWidgetEntry> ActiveToastWidgets;
 
    UPROPERTY()
    TArray<FPendingToastWidgetEntry> PendingToastWidgets;
 
protected:
    int32 ExitingToastCount = 0;
};