// Copyright (c) 2012 - 2026 kio@little-bat.de
// BSD-2-Clause license
// https://opensource.org/licenses/BSD-2-Clause

#pragma once
#include "Inspector.h"
#include "SimpleTerminal.h"
#include "Z80/Z80.h"
#include <QScrollBar>

class QWidget;
class QBoxLayout;
class QRadioButton;
class QTextEdit;
class QComboBox;

namespace zxsp
{

class MyLineEdit;

extern const QColor paper_color_reg; // gelb
extern const QColor paper_color_sp;	 // grün
extern const QColor paper_color_hl;	 // cyan
extern const QColor paper_color_pc;	 // rot
extern const QColor color_white;
extern const QColor color_black;
extern const QColor color_light_grey;


// ==============================================================


/*	Memory Page Descriptor:
 */
struct Page
{
	int32 baseaddress; //
	int32 baseoffset;  // inside mem[]
	int32 size;		   //
	Page(int32 a, int32 o, int32 sz) : baseaddress(a), baseoffset(o), size(sz) {}
	Page() : baseaddress(0), baseoffset(0), size(0) {}
};


// ==============================================================


/*	Eine eigene Klasse für die ScrollBar
	damit wir wheelEvent(e) von außen aufrufen können:
*/
class MyScrollBar : public QScrollBar
{
public:
	MyScrollBar(Qt::Orientation orientation, QWidget* parent) : QScrollBar(orientation, parent) {}
	void wheelEvent(QWheelEvent* e) override { QScrollBar::wheelEvent(e); }
	void mouseDoubleClickEvent(QMouseEvent* e) override { mousePressEvent(e); }
};


// ==============================================================

enum MIDisplayMode { Bytes, Disass, MemGraph, MemAccess }; // displaymode


class MemoryInspector : public Inspector
{
protected:
	enum { AsSeenByCpu, AllRom, RomPages, AllRam, RamPages }; // combobox_datasource
	enum { regPC, regSP, regBC, regDE, regHL, regIX, regIY }; // combobox_register
	enum {
		LEFT_MARGIN			  = 1,
		RIGHT_MARGIN		  = 0,
		HOR_SPACING			  = 4,
		TOP_MARGIN			  = 0,
		BOT_MARGIN			  = 1,
		VERT_MARGINS		  = TOP_MARGIN + BOT_MARGIN,
		HOR_MARGINS			  = LEFT_MARGIN + RIGHT_MARGIN,
		TOOLBAR_WIDGET_HEIGHT = 26,
		TOOLBAR_BUTTON_HEIGHT = 32
	};

protected:
	QComboBox*	 combobox_datasource;
	QComboBox*	 combobox_memorypage;
	QAction*	 action_memorypage; // for visibility of combobox
	QComboBox*	 combobox_register;
	MyLineEdit*	 lineedit_baseaddress;
	MyScrollBar* scrollbar;

	int	 old_baseaddress; // for lineedit_baseaddress update
	int	 scrollbar_width; // for convenience
	bool needs_aligned_addresses;
	int	 memory_change_cnt;

	// data source:
	MIDisplayMode display_mode;	 // Bytes, Words, Disass, MemGraph, MemAccess
	int			  data_source;	 // AsSeenByCpu, AllRom, RomPages, AllRam, RamPages
	Page		  data;			 // base address, offset inside mem[] and page size
	int			  ram_page_idx;	 // combobox_memorypage idx if data_source = RamPages
	int			  rom_page_idx;	 // combobox_memorypage idx if data_source = RomPages
	int			  bytes_per_row; // displayed data
	int			  rows;			 // displayed data
	int32		  scroll_offset; // offset to data[base_offset] of first displayed byte
	bool		  update_all;

protected:
	MemoryInspector(QWidget*, MachineController*, volatile IsaObject*, MIDisplayMode);
	~MemoryInspector() override;

	void resizeEvent(QResizeEvent*) override;
	// void paintEvent(QPaintEvent*) override;
	void wheelEvent(QWheelEvent*) override;
	// void mousePressEvent(QMouseEvent*) override;
	// bool event(QEvent*) override;
	// void keyPressEvent(QKeyEvent*) override;
	// void keyReleaseEvent(QKeyEvent*) override;

	void saveSettings() override;
	void updateWidgets() override; // timer


	QComboBox* newComboboxRegister();

	virtual void setScrollOffset(int32);
	virtual void updateScrollbar();
	int32		 pageOffsetForCpuAddress(uint16 addr);

	virtual void slotSetDataSource(int);		  // combobox_datasource
	virtual void slotSetMemoryPage(int);		  // combobox_memorypage
	virtual void slotSetScrollPosition(int32);	  // scrollbar
	virtual void slotSetAddressFromRegister(int); // combobox_register, follow_pc in MemoryDisassInspector
	virtual void slotMemoryConfigChanged();

	FourBytes* dataReadPtrForOffset(int32 offset);
	// uint8	peek(uint32 addr)				{ return rdPtr(addr)->data; }
	// uint16  	peek2(uint32 addr)				{ return rdPtr(addr)->data + rdPtr(addr+1)->data * 256; }
	// void		poke(uint32 addr, uint8 byte)	{ rdPtr(addr)->data = byte; }
	// void		poke2(uint32 addr, uint16 word)	{ rdPtr(addr)->data = word; rdPtr(addr+1)->data = word>>8; }

	Page ramPage(int);
	Page romPage(int);
	int	 ramPageIndexForCpuAddress(uint16);
	int	 romPageIndexForCpuAddress(uint16);

	void updateAll() { update_all = true; }

private:
	void init_combobox_memorypage();
	void save_settings();
	void set_address_from_textedit(); // textedit_baseaddress
};

} // namespace zxsp