#pragma once
#include "SPatternInstance.h"
#include "PeakFile/PeakFile.h"
#include "UI/Widget/WaveformViewer.h"

class SSamplePatternInstance;

class FSamplePatternInstanceWaveformHandle : public IWaveformHandle
{
public:
	FSamplePatternInstanceWaveformHandle(TSharedRef<SSamplePatternInstance> InPatternInstance);
	virtual ~FSamplePatternInstanceWaveformHandle() override { delete RenderData; }
	TWeakPtr<SSamplePatternInstance> PatternInstanceWidget;
	virtual TArrayView<const FSamplePeak> GetWaveform(int32 SizeX) override;
	virtual bool NeedUpdate() const override;

	TRange<AudioFrame> GetRenderRange() const;
	FWaveform* RenderData = nullptr;
	TRange<AudioFrame> LastRenderRange;
};

class ARONA_API SSamplePatternInstance : public SPatternInstance
{
public:
	SSamplePatternInstance();
	virtual void Construct(const FArguments& InArgs) override;
	virtual TSharedRef<SWidget> GetViewWidget() override;
	virtual void RequestUpdate() override;
protected:
	virtual FReply OpenPatternMenu() override;
	TSharedPtr<FSamplePatternInstanceWaveformHandle> WaveformHandle;
	TSharedPtr<SWaveformViewer> WaveformViewer;
};