#pragma once

#ifndef T_THUMBNAILVIEWE_INCLUDED
#define T_THUMBNAILVIEWE_INCLUDED

#include "tw/scrollview.h"

//forward declaration
class Thumbnail;
class TTextField;
class TFilePath;

class ThumbnailViewer : public TScrollView
{

	vector<Thumbnail *> m_items;
	int m_selectedItemIndex;

	const TDimension m_itemSize;
	const TDimension m_itemSpace;
	const TDimension m_margins;

	const TRect m_playButtonBox;
	const TRect m_iconBox;
	const TRect m_textBox;

	TPoint m_oldPos;
	bool m_dragDropArmed;

	bool m_flag;

	bool m_playing, m_loading;
	bool m_timerActive;

	class NameField;
	NameField *m_nameField;

public:
	ThumbnailViewer(TWidget *parent, string name = "thumbnailViewer");
	~ThumbnailViewer();

	void addItem(Thumbnail *item);

	//! removes the item from the ThumbnailViewer. It doesn't destroy the item
	void removeItem(Thumbnail *item);

	TDimension getIconSize() const { return m_iconBox.getSize(); }

	int getItemCount() const;
	Thumbnail *getItem(int index) const;

	//! find the max number of thumbnails which fit the current widget width
	int getColumnCount() const;

	//! find the bottom-left corner coordinate of the index-th thumbnail (icon+controls)
	TPoint getItemPos(int index);

	// ! find the region covered by the index-th thumbnail (icon+controls)
	TRect getItemBounds(int index);

	// ! coordinate --> thumbnail index; returns -1 if not found
	int findItem(const TPoint &pos);

	void configureNotify(const TDimension &d);

	//! draw the index-th thumbnail current frame
	void drawFrame(int index);

	//! draw the index-th thumbnail
	void drawItem(int index);

	//! draw the empty space around and between thumbnails
	void drawBackground();

	void repaint();

	void leftButtonDown(const TMouseEvent &e);
	void leftButtonDrag(const TMouseEvent &e);
	void leftButtonUp(const TMouseEvent &e);

	void leftButtonDoubleClick(const TMouseEvent &e);

	void onTimer(int);
	void startPlaying();
	void stopPlaying();

	void select(int);
	int getSelectedItemIndex() { return m_selectedItemIndex; }

	void clearItems();
	void loadDirectory(const TFilePath &dirPath, const vector<string> &fileTypes);

	void updateContentSize();

	void middleButtonDown(const TMouseEvent &e) {}
	void middleButtonDrag(const TMouseEvent &e) {}
	void middleButtonUp(const TMouseEvent &e) {}

	void scrollPage(int y);

	virtual void onDoubleClick(int index) {}
	virtual void onSelect(int index) {}
};

#endif