/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file gui.h GUI functions that shouldn't be here. */

#ifndef GUI_H
#define GUI_H

#include "vehicle_type.h"
#include "gfx_type.h"
#include "economy_type.h"
#include "tile_type.h"
#include "strings_type.h"
#include "transport_type.h"

struct Window;

/* main_gui.cpp */
void HandleOnEditText(const char *str);
void InitializeGUI();

/* settings_gui.cpp */
void ShowGameOptions();
void ShowGameDifficulty();
void ShowGameSettings();
void DrawArrowButtons(int x, int y, Colours button_colour, byte state, bool clickable_left, bool clickable_right);

/* train_gui.cpp */
void ShowOrdersWindow(const Vehicle *v);

/* dock_gui.cpp */
Window *ShowBuildDocksToolbar();
Window *ShowBuildDocksScenToolbar();

/* airport_gui.cpp */
Window *ShowBuildAirToolbar();

/* tgp_gui.cpp */
void ShowGenerateLandscape();
void ShowHeightmapLoad();

/* misc_gui.cpp */
void ShowLandInfo(TileIndex tile);
void ShowAboutWindow();
void ShowBuildTreesToolbar();
void ShowTownDirectory();
void ShowIndustryDirectory();
void ShowSubsidiesList();

void ShowEstimatedCostOrIncome(Money cost, int x, int y);

/** Message severity/type */
enum WarningLevel {
	WL_INFO,     ///< Used for DoCommand-like (and some nonfatal AI GUI) errors/information
	WL_WARNING,  ///< Other information
	WL_ERROR,    ///< Errors (eg. saving/loading failed)
	WL_CRITICAL, ///< Critical errors, the MessageBox is shown in all cases
};

void ShowErrorMessage(StringID summary_msg, StringID detailed_msg, WarningLevel wl, int x = 0, int y = 0);

void ShowExtraViewPortWindow(TileIndex tile = INVALID_TILE);
void ShowExtraViewPortWindowForTileUnderCursor();

/* bridge_gui.cpp */
void ShowBuildBridgeWindow(TileIndex start, TileIndex end, TransportType transport_type, byte bridge_type);

void ShowBuildIndustryWindow();
void ShowFoundTownWindow();
void ShowMusicWindow();

#endif /* GUI_H */