GameMenuItem.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "Containers/Array.h"
#include "CoreMinimal.h"
#include "Delegates/Delegate.h"
#include "HAL/Platform.h"
#include "Internationalization/Text.h"
#include "Templates/SharedPointer.h"
 
class SGameMenuItemWidget;
 
namespace EGameMenuItemType
{
    enum Type
    {
        Root,
        Standard,
        MultiChoice,
        CustomWidget,
    };
};
 
class FGameMenuItem : public TSharedFromThis<FGameMenuItem>
{
public:
    DECLARE_DELEGATE(FOnConfirmMenuItem);
 
    DECLARE_DELEGATE_TwoParams(FOnOptionChanged, TSharedPtr<FGameMenuItem>, int32);
 
    FOnConfirmMenuItem OnConfirmMenuItem;
 
    FOnOptionChanged OnOptionChanged;
 
    EGameMenuItemType::Type MenuItemType;
 
    FText Text;
 
    TSharedPtr<class FGameMenuPage> SubMenu;
 
    TSharedPtr<SGameMenuItemWidget> Widget;
 
    TSharedPtr<SGameMenuItemWidget> CustomWidget;
 
    TArray<FText> MultiChoice;
 
    int32 MinMultiChoiceIndex;
 
    int32 MaxMultiChoiceIndex;
 
    int32 SelectedMultiChoice;
 
    bool bInactive;
 
    FGameMenuItem(FText _text)
    {
        Text = _text;
        MenuItemType = EGameMenuItemType::Standard;
        MinMultiChoiceIndex = MaxMultiChoiceIndex = SelectedMultiChoice = 0;
        bInactive = false;
    }
 
    FGameMenuItem(TSharedPtr<SGameMenuItemWidget> InWidget)
    {
        MenuItemType = EGameMenuItemType::CustomWidget;
        CustomWidget = InWidget;
        MinMultiChoiceIndex = MaxMultiChoiceIndex = SelectedMultiChoice = 0;
        bInactive = false;
    }
 
    FGameMenuItem(FText InText, TArray<FText> InOptions, int32 InDefaultIndex=0)
    {
        Text = InText;
        MenuItemType = EGameMenuItemType::MultiChoice;
        MultiChoice = InOptions;
        MinMultiChoiceIndex = MaxMultiChoiceIndex = -1;
        SelectedMultiChoice = InDefaultIndex;
        bInactive = false;
    }
 
    bool ConfirmPressed()
    {
        bool bHandled = false;
        if ( (bInactive == false ) && (OnConfirmMenuItem.IsBound() == true ) )
        {
            OnConfirmMenuItem.Execute();            
            bHandled = true;
        }
        return bHandled;
    }
    
    static TSharedRef<FGameMenuItem> CreateRoot()
    {
        return MakeShareable(new FGameMenuItem());
    }
    
private:
    FGameMenuItem()
    {
        MenuItemType = EGameMenuItemType::Root;
    }
};