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94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "UObject/WeakObjectPtr.h"
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#include "EditorUndoClient.h"
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#include "Layers/ILayers.h"
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class AActor;
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class UEditorEngine;
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class ULayer;
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/**
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* The non-UI solution specific presentation logic for a single Layer
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*/
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class FActorLayerViewModel : public TSharedFromThis< FActorLayerViewModel >, public FEditorUndoClient
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{
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public:
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/** FActorLayerViewModel destructor */
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virtual ~FActorLayerViewModel();
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/**
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* Factory method which creates a new FActorLayerViewModel object
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*
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* @param InLayer The layer wrap
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* @param InWorldLayers The layer management logic object
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* @param InEditor The UEditorEngine to use
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*/
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static TSharedRef< FActorLayerViewModel > Create( const TWeakObjectPtr< ULayer >& InLayer, const TArray< TWeakObjectPtr< AActor > >& InActors, const TSharedRef< ILayers >& InWorldLayers, const TWeakObjectPtr< UEditorEngine >& InEditor )
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{
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const TSharedRef< FActorLayerViewModel > NewLayer( new FActorLayerViewModel( InLayer, InActors, InWorldLayers, InEditor ) );
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NewLayer->Initialize();
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return NewLayer;
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}
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public:
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/** @return The Layer's display name as a FName */
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FName GetFName() const;
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/** @return The Layer's display name as a FString */
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FText GetName() const;
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/** @return Whether the Layer is visible */
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bool IsVisible() const;
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/********************************************************************
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* EVENTS
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********************************************************************/
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/** Broadcasts whenever the layer changes */
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FSimpleMulticastDelegate Changed;
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private:
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/**
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* FActorLayerViewModel Constructor
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*
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* @param InLayer The Layer to represent
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* @param InWorldLayers The layer management logic object
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* @param InEditor The UEditorEngine to use
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*/
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FActorLayerViewModel( const TWeakObjectPtr< ULayer >& InLayer, const TArray< TWeakObjectPtr< AActor > >& InActors, const TSharedRef< ILayers >& InWorldLayers, const TWeakObjectPtr< UEditorEngine >& InEditor );
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/** Initializes the FActorLayerViewModel for use */
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void Initialize();
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/** Called when a change occurs regarding Layers */
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void OnLayersChanged( const ELayersAction::Type Action, const TWeakObjectPtr< ULayer >& ChangedLayer, const FName& ChangedProperty );
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/** Refreshes any cached information in the FActorLayerViewModel */
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void Refresh();
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private:
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/** The layer management logic object */
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const TSharedRef< ILayers > WorldLayers;
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/** The UEditorEngine to use */
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const TWeakObjectPtr< UEditorEngine > Editor;
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/** The Layer this object represents */
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const TWeakObjectPtr< ULayer > Layer;
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/** The Actors this object represents */
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TArray< TWeakObjectPtr< AActor > > Actors;
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};
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