34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "DragAndDrop/DecoratedDragDropOp.h"
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#include "IDetailDragDropHandler.h"
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#include "Input/DragAndDrop.h"
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class IPropertyHandle;
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class UWidget;
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class UWidgetBlueprint;
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/** Handler for customizing the drag-and-drop behavior for function entry/result pins, allowing parameters to be reordered */
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class FWidgetPropertyDragDropHandler : public IDetailDragDropHandler
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{
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public:
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FWidgetPropertyDragDropHandler(UWidget* InWidget, TSharedPtr<IPropertyHandle> InPropertyHandle, UWidgetBlueprint* InWidgetBP);
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virtual TSharedPtr<FDragDropOperation> CreateDragDropOperation() const override;
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static int32 ComputeNewIndex(int32 OriginalIndex, int32 DropOntoIndex, EItemDropZone DropZone);
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virtual bool AcceptDrop(const FDragDropEvent& DragDropEvent, EItemDropZone DropZone) const override;
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virtual TOptional<EItemDropZone> CanAcceptDrop(const FDragDropEvent& DragDropEvent, EItemDropZone DropZone) const override;
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private:
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TSharedPtr<IPropertyHandle> PropertyHandle;
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TWeakObjectPtr<UWidget> OwnerWidget;
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TWeakObjectPtr<UWidgetBlueprint> WidgetBP;
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};
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