/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef KYRA_GUI_LOK_H
#define KYRA_GUI_LOK_H

#include "kyra/gui/gui_v1.h"
#include "kyra/graphics/screen_lok.h"

namespace Kyra {

#define GUI_V1_BUTTON(button, a, b, c, d, e, f, g, h, i, j, k) \
	do { \
		button.nextButton = 0; \
		button.index = a; \
		button.keyCode = button.keyCode2 = 0; \
		button.data0Val1 = b; \
		button.data1Val1 = c; \
		button.data2Val1 = d; \
		button.data0ShapePtr = button.data1ShapePtr = button.data2ShapePtr = 0; \
		button.flags = e; \
		button.dimTableIndex = f; \
		button.x = g; \
		button.y = h; \
		button.width = i; \
		button.height = j; \
		button.flags2 = k; \
		button.mouseWheel = 0; \
		button.arg = 0; \
	} while (0)

#define GUI_V1_MENU(menu, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q) \
	do { \
		menu.x = a; \
		menu.y = b; \
		menu.width = c; \
		menu.height = d; \
		menu.bkgdColor = e; \
		menu.color1 = f; \
		menu.color2 = g; \
		menu.menuNameString = h; \
		menu.textColor = i; \
		menu.titleX = j; \
		menu.titleY = k; \
		menu.highlightedItem = l; \
		menu.numberOfItems = m; \
		menu.scrollUpButtonX = n; \
		menu.scrollUpButtonY = o; \
		menu.scrollDownButtonX = p; \
		menu.scrollDownButtonY = q; \
	} while (0)

#define GUI_V1_MENU_ITEM(item, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v) \
	do { \
		item.enabled = a; \
		item.itemString = ""; \
		item.x = e; \
		item.y = g; \
		item.width = h; \
		item.height = i; \
		item.textColor = j; \
		item.highlightColor = k; \
		item.titleX = l; \
		item.bkgdColor = n; \
		item.color1 = o; \
		item.color2 = p; \
		item.saveSlot = q; \
		item.labelString = r; \
		item.labelX = s; \
		item.labelY = t; \
		item.keyCode = v; \
	} while (0)

class KyraEngine_LoK;

class GUI_LoK : public GUI_v1 {
	friend class KyraEngine_LoK;
public:
	GUI_LoK(KyraEngine_LoK *vm, Screen_LoK *screen);
	~GUI_LoK() override;

	void processButton(Button *button) override;
	int processButtonList(Button *buttonList, uint16 inputFlags, int8 mouseWheel) override;

	int buttonMenuCallback(Button *caller);

	void createScreenThumbnail(Graphics::Surface &dst) override;
private:
	void initStaticResource();

	Button _menuButtonData[6];
	Button _scrollUpButton;
	Button _scrollDownButton;
	Button *getButtonListData() override { return _menuButtonData; }
	Button *getScrollUpButton() override { return &_scrollUpButton; }
	Button *getScrollDownButton() override { return &_scrollDownButton; }

	Menu *_menu;

	bool _pressFlag;

	void setGUILabels();

	void setupSavegames(Menu &menu, int num);

	int resumeGame(Button *button);
	int loadGameMenu(Button *button);
	int saveGameMenu(Button *button);
	int gameControlsMenu(Button *button);
	int quitPlaying(Button *button);
	int quitConfirmYes(Button *button);
	int quitConfirmNo(Button *button);
	int loadGame(Button *button);
	int saveGame(Button *button);
	int savegameConfirm(Button *button);
	int cancelSubMenu(Button *button);
	int scrollUp(Button *button);
	int scrollDown(Button *button);
	int controlsChangeMusic(Button *button);
	int controlsChangeSounds(Button *button);
	int controlsChangeWalk(Button *button);
	int controlsChangeText(Button *button);
	int controlsChangeVoice(Button *button);
	int controlsApply(Button *button);

	bool quitConfirm(const char *str);
	void getInput();
	void updateSavegameString();
	void redrawTextfield();
	void fadePalette();
	void restorePalette();
	void setupControls(Menu &menu);

	uint8 defaultColor1() const override { return 12; }
	uint8 defaultColor2() const override { return 248; }
	uint8 menuItemLabelColor() const override { return 253; }

	Common::String getMenuTitle(const Menu &menu) override { return menu.menuNameString; }
	Common::String getMenuItemTitle(const MenuItem &menuItem) override { return menuItem.itemString; }
	Common::String getMenuItemLabel(const MenuItem &menuItem) override { return menuItem.labelString; }

	KyraEngine_LoK *_vm;
	Screen_LoK *_screen;

	bool _menuRestoreScreen;
	uint8 _toplevelMenu;
	int _savegameOffset;
	char _savegameName[35 * 4]; // allow extra space, since the string can be UTF-8, temporarily
	char _savegameNames[5][35 * 4];
	const char *_specialSavegameString;
	bool _resetHanInput;

	int _inputType;
	// The purpose of these variables is improved handling of backspace character deletion for
	// Hangul input. The original allows "deconstruction" of the last glyph, so why shouldn't we...
	uint8 _inputState;
	uint16 _backupChars[4];

	int _saveLoadNumSlots;

	Button::Callback _scrollUpFunctor;
	Button::Callback _scrollDownFunctor;
	Button::Callback getScrollUpButtonHandler() const override { return _scrollUpFunctor; }
	Button::Callback getScrollDownButtonHandler() const override { return _scrollDownFunctor; }

	const char *_voiceTextString;
	const char *_textSpeedString;
	const char *_onString;
	const char *_offString;
	const char *_confMusicMenuStrings[3];
	uint8 _confMusicMenuMod;
};

} // End of namespace Kyra

#endif