79 lines
2.0 KiB
C++
79 lines
2.0 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 "MVVM/ViewModelTypeID.h"
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#include "MVVM/Extensions/HierarchicalCacheExtension.h"
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#define UE_API SEQUENCER_API
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class UMovieSceneCondition;
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namespace UE
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{
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namespace Sequencer
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{
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enum class EConditionableConditionState
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{
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None,
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HasConditionEvaluatingFalse,
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HasConditionEvaluatingTrue,
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HasConditionEditorForceTrue,
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};
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/**
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* An extension for models that can have conditions
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*/
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class IConditionableExtension
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{
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public:
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UE_SEQUENCER_DECLARE_VIEW_MODEL_TYPE_ID_API(UE_API, IConditionableExtension)
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virtual ~IConditionableExtension() {}
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/* Returns the condition in question for this model if applicable. */
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virtual const UMovieSceneCondition* GetCondition() const = 0;
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/** Returns condition state for this item */
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virtual EConditionableConditionState GetConditionState() const = 0;
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/** Set this item's condition to evaluate true for editor preview purposes */
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virtual void SetConditionEditorForceTrue(bool bEditorForceTrue) = 0;
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};
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enum class ECachedConditionState
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{
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None = 0,
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HasCondition = 1 << 0,
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ConditionEvaluatingTrue = 1 << 1,
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EditorForceTrue = 1 << 2,
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ChildHasCondition = 1 << 3,
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SectionHasCondition = 1 << 4,
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ParentHasCondition = 1 << 5,
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ParentHasConditionEvaluatingTrue = 1 << 6,
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InheritedFromChildren = ChildHasCondition,
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};
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ENUM_CLASS_FLAGS(ECachedConditionState)
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class FConditionStateCacheExtension
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: public TFlagStateCacheExtension<ECachedConditionState>
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{
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public:
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UE_SEQUENCER_DECLARE_VIEW_MODEL_TYPE_ID_API(UE_API, FConditionStateCacheExtension);
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private:
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UE_API ECachedConditionState ComputeFlagsForModel(const FViewModelPtr& ViewModel) override;
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UE_API void PostComputeChildrenFlags(const FViewModelPtr& ViewModel, ECachedConditionState& OutThisModelFlags, ECachedConditionState& OutPropagateToParentFlags) override;
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};
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} // namespace Sequencer
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} // namespace UE
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#undef UE_API
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