void FComponentMaterialCategory::Create( IDetailLayoutBuilder& DetailBuilder )
{
	NotifyHook = DetailBuilder.GetPropertyUtilities()->GetNotifyHook();

	FMaterialListDelegates MaterialListDelegates;
	MaterialListDelegates.OnGetMaterials.BindSP( this, &FComponentMaterialCategory::OnGetMaterialsForView );
	MaterialListDelegates.OnMaterialChanged.BindSP( this, &FComponentMaterialCategory::OnMaterialChanged );

	TSharedRef<FMaterialList> MaterialList = MakeShareable( new FMaterialList( DetailBuilder, MaterialListDelegates ) );

	bool bAnyMaterialsToDisplay = false;

	for( FMaterialIterator It( SelectedComponents ); It; ++It )
	{	
		UActorComponent* CurrentComponent = It.GetComponent();

		if( !bAnyMaterialsToDisplay )
		{
			bAnyMaterialsToDisplay = true;
			break;
		}
	}


	// only show the category if there are materials to display
	if( bAnyMaterialsToDisplay )
	{
		// Make a category for the materials.
		IDetailCategoryBuilder& MaterialCategory = DetailBuilder.EditCategory("Materials", FText::GetEmpty(), ECategoryPriority::TypeSpecific );

		MaterialCategory.AddCustomBuilder( MaterialList );
	}
}
BEGIN_SLATE_FUNCTION_BUILD_OPTIMIZATION
void FBehaviorDecoratorDetails::CustomizeDetails( IDetailLayoutBuilder& DetailLayout )
{
	FText AbortModeDesc = LOCTEXT("ObserverTitle","Observer aborts");
	PropUtils = &(DetailLayout.GetPropertyUtilities().Get());

	TArray<TWeakObjectPtr<UObject> > EditedObjects;
	DetailLayout.GetObjectsBeingCustomized(EditedObjects);
	
	for (int32 i = 0; i < EditedObjects.Num(); i++)
	{
		UBTDecorator* MyDecorator = Cast<UBTDecorator>(EditedObjects[i].Get());
		if (MyDecorator)
		{
			MyNode = MyDecorator;
			break;
		}
	}
	
	UpdateAllowedAbortModes();
	ModeProperty = DetailLayout.GetProperty(GET_MEMBER_NAME_CHECKED(UBTDecorator, FlowAbortMode));

	// dynamic FlowAbortMode combo
	IDetailCategoryBuilder& FlowCategory = DetailLayout.EditCategory( "FlowControl" );
	IDetailPropertyRow& AbortModeRow = FlowCategory.AddProperty(ModeProperty);
	AbortModeRow.IsEnabled(TAttribute<bool>(this, &FBehaviorDecoratorDetails::GetAbortModeEnabled));
	AbortModeRow.Visibility(TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FBehaviorDecoratorDetails::GetModeVisibility)));
	AbortModeRow.CustomWidget()
		.NameContent()
		[
			ModeProperty->CreatePropertyNameWidget(AbortModeDesc)
		]
		.ValueContent()
		[
			SNew(SComboButton)
			.OnGetMenuContent(this, &FBehaviorDecoratorDetails::OnGetAbortModeContent)
 			.ContentPadding(FMargin( 2.0f, 2.0f ))
			.ButtonContent()
			[
				SNew(STextBlock) 
				.Text(this, &FBehaviorDecoratorDetails::GetCurrentAbortModeDesc)
				.Font(IDetailLayoutBuilder::GetDetailFont())
			]
		];
	InitPropertyValues();

}
void FPaperTileMapDetailsCustomization::CustomizeDetails(IDetailLayoutBuilder& DetailLayout)
{
    const TArray< TWeakObjectPtr<UObject> >& SelectedObjects = DetailLayout.GetDetailsView().GetSelectedObjects();
    MyDetailLayout = &DetailLayout;

    FNotifyHook* NotifyHook = DetailLayout.GetPropertyUtilities()->GetNotifyHook();

    bool bEditingActor = false;

    UPaperTileMap* TileMap = nullptr;
    UPaperTileMapComponent* TileComponent = nullptr;
    for (int32 ObjectIndex = 0; ObjectIndex < SelectedObjects.Num(); ++ObjectIndex)
    {
        UObject* TestObject = SelectedObjects[ObjectIndex].Get();
        if (AActor* CurrentActor = Cast<AActor>(TestObject))
        {
            if (UPaperTileMapComponent* CurrentComponent = CurrentActor->FindComponentByClass<UPaperTileMapComponent>())
            {
                bEditingActor = true;
                TileComponent = CurrentComponent;
                TileMap = CurrentComponent->TileMap;
                break;
            }
        }
        else if (UPaperTileMapComponent* TestComponent = Cast<UPaperTileMapComponent>(TestObject))
        {
            TileComponent = TestComponent;
            TileMap = TestComponent->TileMap;
            break;
        }
        else if (UPaperTileMap* TestTileMap = Cast<UPaperTileMap>(TestObject))
        {
            TileMap = TestTileMap;
            break;
        }
    }
    TileMapPtr = TileMap;
    TileMapComponentPtr = TileComponent;

    IDetailCategoryBuilder& TileMapCategory = DetailLayout.EditCategory("Tile Map");

    TAttribute<EVisibility> InternalInstanceVis = TAttribute<EVisibility>::Create(TAttribute<EVisibility>::FGetter::CreateSP(this, &FPaperTileMapDetailsCustomization::GetVisibilityForInstancedOnlyProperties));

    if (TileComponent != nullptr)
    {
        TileMapCategory
        .AddCustomRow(LOCTEXT( "TileMapInstancingControlsSearchText", "Edit New Promote Asset"))
        [
            SNew(SVerticalBox)
            + SVerticalBox::Slot()
            .Padding(0.0f, 2.0f, 0.0f, 0.0f)
            .FillHeight(1.0f)
            .VAlign(VAlign_Center)
            [
                SNew(SHorizontalBox)

                // Edit button
                +SHorizontalBox::Slot()
                .AutoWidth()
                .Padding( 2.0f, 0.0f )
                .VAlign(VAlign_Center)
                .HAlign(HAlign_Left)
                [
                    SNew(SButton)
                    .VAlign(VAlign_Center)
                    .OnClicked(this, &FPaperTileMapDetailsCustomization::EnterTileMapEditingMode)
                    .Visibility(this, &FPaperTileMapDetailsCustomization::GetNonEditModeVisibility)
                    .Text( LOCTEXT("EditAsset", "Edit") )
                    .ToolTipText( LOCTEXT("EditAssetToolTip", "Edit this tile map") )
                ]

                // Create new tile map button
                +SHorizontalBox::Slot()
                .AutoWidth()
                .Padding( 2.0f, 0.0f )
                .VAlign(VAlign_Center)
                .HAlign(HAlign_Left)
                [
                    SNew(SButton)
                    .VAlign(VAlign_Center)
                    .OnClicked(this, &FPaperTileMapDetailsCustomization::OnNewButtonClicked)
                    .Visibility(this, &FPaperTileMapDetailsCustomization::GetNewButtonVisiblity)
                    .Text(LOCTEXT("CreateNewInstancedMap", "New"))
                    .ToolTipText( LOCTEXT("CreateNewInstancedMapToolTip", "Create a new tile map") )
                ]

                // Promote to asset button
                +SHorizontalBox::Slot()
                .AutoWidth()
                .Padding( 2.0f, 0.0f )
                .VAlign(VAlign_Center)
                .HAlign(HAlign_Left)
                [
                    SNew(SButton)
                    .VAlign(VAlign_Center)
                    .OnClicked(this, &FPaperTileMapDetailsCustomization::OnPromoteButtonClicked)
                    .Visibility(this, &FPaperTileMapDetailsCustomization::GetVisibilityForInstancedOnlyProperties)
                    .Text(LOCTEXT("PromoteToAsset", "Promote to asset"))
                    .ToolTipText(LOCTEXT("PromoteToAssetToolTip", "Save this tile map as a reusable asset"))
                ]
            ]
        ];

        TileMapCategory.AddProperty(GET_MEMBER_NAME_CHECKED(UPaperTileMapComponent, TileMap));
    }

    // Add the layer browser
    if (TileMap != nullptr)
    {
        TAttribute<EVisibility> LayerBrowserVis;
        LayerBrowserVis.Set(EVisibility::Visible);
        if (TileComponent != nullptr)
        {
            LayerBrowserVis = InternalInstanceVis;
        }

        FText TileLayerListText = LOCTEXT("TileLayerList", "Tile layer list");
        TileMapCategory.AddCustomRow(TileLayerListText)
        .Visibility(LayerBrowserVis)
        [
            SNew(SVerticalBox)
            +SVerticalBox::Slot()
            .AutoHeight()
            [
                SNew(STextBlock)
                .Font(DetailLayout.GetDetailFont())
                .Text(TileLayerListText)
            ]
            +SVerticalBox::Slot()
            [
                SNew(STileLayerList, TileMap, NotifyHook)
            ]
        ];
    }

    // Add all of the properties from the inline tilemap
    if ((TileComponent != nullptr) && (TileComponent->OwnsTileMap()))
    {
        TArray<UObject*> ListOfTileMaps;
        ListOfTileMaps.Add(TileMap);

        for (TFieldIterator<UProperty> PropIt(UPaperTileMap::StaticClass()); PropIt; ++PropIt)
        {
            UProperty* TestProperty = *PropIt;

            if (TestProperty->HasAnyPropertyFlags(CPF_Edit))
            {
                FName CategoryName(*TestProperty->GetMetaData(TEXT("Category")));
                IDetailCategoryBuilder& Category = DetailLayout.EditCategory(CategoryName);

                if (IDetailPropertyRow* ExternalRow = Category.AddExternalProperty(ListOfTileMaps, TestProperty->GetFName()))
                {
                    ExternalRow->Visibility(InternalInstanceVis);
                }
            }
        }
    }

    // Make sure the setup category is near the top
    DetailLayout.EditCategory("Setup");
}