MovieSceneConstrainedSection.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/NameTypes.h"
#include "UObject/Interface.h"
#include "MovieSceneSection.h"
#include "ConstraintsManager.h"
#include "ConstraintChannel.h"
#include "MovieSceneConstrainedSection.generated.h"
 
struct FGuid;
 
UINTERFACE(MinimalAPI)
class UMovieSceneConstrainedSection : public UInterface
{
public:
    GENERATED_BODY()
};
 
class IMovieSceneConstrainedSection
{
public:
 
    GENERATED_BODY()
    MOVIESCENETRACKS_API IMovieSceneConstrainedSection();
 
    DECLARE_MULTICAST_DELEGATE_TwoParams(FConstraintChannelAddedEvent, IMovieSceneConstrainedSection*, FMovieSceneConstraintChannel*);
 
 
    /*
    * If it has that constraint with that Name
    */
    virtual bool HasConstraintChannel(const FGuid& InGuid) const = 0;
 
    /*
    * Get constraint with that name
    */
    virtual FConstraintAndActiveChannel* GetConstraintChannel(const FGuid& InConstraintGuid) = 0;
 
    /*
    *  Add Constraint channel
    */
    virtual void AddConstraintChannel(UTickableConstraint* InConstraint) = 0;
    
    /*
    *  Remove Constraint channel
    */
    virtual void RemoveConstraintChannel(const UTickableConstraint* InConstraint) = 0;
 
    /*
    *  Get The channels
    */
    virtual TArray<FConstraintAndActiveChannel>& GetConstraintsChannels() = 0;
 
    /*
    *  Replace the constraint with the specified name with the new one
    */
    virtual void ReplaceConstraint(const FName InConstraintName, UTickableConstraint* InConstraint) = 0;
 
    /*
    * Added Delegate
    */
     FConstraintChannelAddedEvent& ConstraintChannelAdded() { return OnConstraintChannelAdded; }
 
     /*
     *  What to do if the constraint object has been changed, for example by an undo or redo. By default nothing to be overriden if needed.
     */
     virtual void OnConstraintsChanged() {};
 
    /*
    *  SetToNotRemoveChannel when we are told a constraint is removed, we need this sometimes sincet his will be destructive
    */
     MOVIESCENETRACKS_API void SetDoNoRemoveChannel(bool bInDoNotRemoveChannel);
 
    /*
    *  Removed delegate that get's added by the track editor
    */
    FDelegateHandle OnConstraintRemovedHandle;
 
 
protected:
 
    FConstraintChannelAddedEvent OnConstraintChannelAdded;
    bool bDoNotRemoveChannel = false;
 
};