43 lines
1.4 KiB
C++
43 lines
1.4 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 "Layout/Visibility.h"
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#include "Input/Reply.h"
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#include "Widgets/SWidget.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/SCompoundWidget.h"
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#include "Widgets/Views/STreeView.h"
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#include "AssetRegistry/AssetData.h"
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#include "IWorldTreeItem.h"
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class FLevelModel;
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class FLevelCollectionModel;
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class SWorldHierarchyImpl;
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class SLevelsTreeWidget : public STreeView<WorldHierarchy::FWorldTreeItemPtr>
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{
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public:
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void Construct(const FArguments& InArgs, const TSharedPtr<FLevelCollectionModel>& InWorldModel, const TSharedPtr<SWorldHierarchyImpl>& InHierachy);
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virtual FReply OnDragOver(const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent) override;
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virtual void OnDragLeave(const FDragDropEvent& DragDropEvent) override;
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virtual FReply OnDrop(const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent) override;
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private:
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/** Finds any world assets that are contained in the drag drop event and returns them in the supplied array. Returns true if a world asset was found */
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bool GetWorldAssetsFromDrag(const FDragDropEvent& DragDropEvent, TArray<FAssetData>& OutWorldAssetList);
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/** Checks to see if all selected items can be moved. */
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bool CanAttachAllItemsToRoot(const TArray<WorldHierarchy::FWorldTreeItemPtr>& Items) const;
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private:
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TSharedPtr<FLevelCollectionModel> WorldModel;
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TWeakPtr<SWorldHierarchyImpl> Hierarchy;
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}; |