86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "StructViewerFilter.h"
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#include "StructViewerModule.h"
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#include "Widgets/SCompoundWidget.h"
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#define UE_API STRUCTUTILSEDITOR_API
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class IPropertyHandle;
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class IPropertyUtilities;
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class IAssetReferenceFilter;
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class SComboButton;
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/**
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* Filter used by the instanced struct struct picker.
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*/
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class FInstancedStructFilter : public IStructViewerFilter
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{
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public:
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/** The base struct for the property that classes must be a child-of. */
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TWeakObjectPtr<const UScriptStruct> BaseStruct = nullptr;
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/** The array of allowed structs */
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TArray<TSoftObjectPtr<const UScriptStruct>> AllowedStructs;
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/** The array of disallowed structs */
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TArray<TSoftObjectPtr<const UScriptStruct>> DisallowedStructs;
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// A flag controlling whether we allow UserDefinedStructs
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bool bAllowUserDefinedStructs = false;
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// A flag controlling whether we allow to select the BaseStruct
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bool bAllowBaseStruct = true;
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UE_API virtual bool IsStructAllowed(const FStructViewerInitializationOptions& InInitOptions, const UScriptStruct* InStruct, TSharedRef<FStructViewerFilterFuncs> InFilterFuncs) override;
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UE_API virtual bool IsUnloadedStructAllowed(const FStructViewerInitializationOptions& InInitOptions, const FSoftObjectPath& InStructPath, TSharedRef<FStructViewerFilterFuncs> InFilterFuncs) override;
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// Optional filter to prevent selection of some structs e.g. ones in a plugin that is inaccessible from the object being edited
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TSharedPtr<IAssetReferenceFilter> AssetReferenceFilter;
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};
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class SInstancedStructPicker : public SCompoundWidget
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{
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public:
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SLATE_BEGIN_ARGS(SInstancedStructPicker) { }
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SLATE_EVENT(FOnStructPicked, OnStructPicked)
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SLATE_ARGUMENT(TArray<TSoftObjectPtr<const UScriptStruct>>, AllowedStructs)
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SLATE_ARGUMENT(TArray<TSoftObjectPtr<const UScriptStruct>>, DisallowedStructs)
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SLATE_END_ARGS()
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UE_API void Construct(const FArguments& InArgs, TSharedPtr<IPropertyHandle> InStructProperty, TSharedPtr<IPropertyUtilities> InPropertyUtils);
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const UScriptStruct* GetBaseScriptStruct() const;
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bool CanChangeStructType() const
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{
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return bCanChangeStructType;
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}
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FOnStructPicked OnStructPicked;
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private:
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TSharedPtr<SComboButton> ComboButton;
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TSharedPtr<IPropertyHandle> StructProperty;
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TSharedPtr<IPropertyUtilities> PropUtils;
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/** Can we change the struct type at all? (controlled by the "StructTypeConst" meta-data) */
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bool bCanChangeStructType = true;
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/** The array of allowed structs (additionally to the meta-data) */
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TArray<TSoftObjectPtr<const UScriptStruct>> AllowedStructs;
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/** The array of disallowed structs (additionally to the meta-data) */
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TArray<TSoftObjectPtr<const UScriptStruct>> DisallowedStructs;
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UE_API FText GetDisplayValueString() const;
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UE_API FText GetTooltipText() const;
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UE_API const FSlateBrush* GetDisplayValueIcon() const;
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UE_API TSharedRef<SWidget> GenerateStructPicker();
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UE_API void StructPicked(const UScriptStruct* InStruct);
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};
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#undef UE_API
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