/* $Id$ */
/*
   Copyright (C) 2003 - 2009 by David White <dave@whitevine.net>
   Part of the Battle for Wesnoth Project http://www.wesnoth.org/

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2
   or at your option any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
*/
#ifndef DIALOGS_H_INCLUDED
#define DIALOGS_H_INCLUDED

class attack_type;
class config;
class display;
class game_display;
class unit;
class unit_map;
class unit_type;

#include "map_location.hpp"
#include "construct_dialog.hpp"
#include "events.hpp"
#include "network.hpp"

#include "widgets/button.hpp"

namespace dialogs {

/**
 * Function to handle an advancing unit. If there is only one choice to advance
 * to, the unit will be automatically advanced. If there is a choice, and
 * 'random_choice' is true, then a unit will be selected at random. Otherwise,
 * a dialog will be displayed asking the user what to advance to.
 *
 * Note that 'loc' is not a reference, because deleting an item from the units
 * map (when replacing the unit that is being advanced) will possibly
 * invalidate the reference.
 *
 * The game only expects an advancement to be triggered by a fight, if the
 * cause for advancement is different (eg unstore_unit) the add_replay_event
 * should be set.
 */
void advance_unit(const map_location &loc, bool random_choice = false, bool add_replay_event = false);

bool animate_unit_advancement(const map_location &loc, size_t choice);

void show_objectives(const config &level, const std::string &objectives);

/**
 * Allow user to select the game they want to load. Returns the name of the
 * save they want to load. Stores whether the user wants to show a replay of
 * the game in show_replay. If show_replay is NULL, then the user will not be
 * asked if they want to show a replay.
 */
std::string load_game_dialog(display& disp, const config& terrain_config, bool* show_replay, bool* cancel_orders);

/** Show unit-stats in a side-pane to unit-list, recall-list, etc. */
class unit_preview_pane : public gui::preview_pane
{
public:
	enum TYPE { SHOW_ALL, SHOW_BASIC };
	struct details {
		details();

		surface image;
	  	std::string name, type_name, race;
		int level;
		std::string alignment, traits;
		std::vector<t_string> abilities;
		int hitpoints, max_hitpoints;
		int experience, max_experience;
		std::string hp_color, xp_color;
		int movement_left, total_movement;
		std::vector<attack_type> attacks;
	};

	unit_preview_pane(const gui::filter_textbox *filter = NULL,
			TYPE type = SHOW_ALL, bool left_side = true);

	bool show_above() const;
	bool left_side() const;
	void set_selection(int index);

	handler_vector handler_members();

protected:
	int index_;
	gui::button details_button_;

private:
	virtual size_t size() const = 0;
	virtual const details get_details() const = 0;
	virtual void process_event() = 0;

	void draw_contents();

	const gui::filter_textbox* filter_;
	bool weapons_;
	bool left_;
};

class units_list_preview_pane : public dialogs::unit_preview_pane
{
public:
	units_list_preview_pane(const unit &u, TYPE type = SHOW_ALL, bool left_side = true);
	units_list_preview_pane(
			std::vector<unit>& units, const gui::filter_textbox* filter=NULL,
			TYPE type=SHOW_ALL, bool left_side=true);

private:
	size_t size() const;
	const details get_details() const;
	void process_event();

	std::vector<unit>* units_;
	std::vector<unit> unit_store_;
};


class unit_types_preview_pane : public dialogs::unit_preview_pane
{
public:
	unit_types_preview_pane(
			std::vector<const unit_type*>& unit_types, const gui::filter_textbox* filterbox=NULL,
			int side = 1, TYPE type=SHOW_ALL, bool left_side=true);

private:
	size_t size() const;
	const details get_details() const;
	void process_event();

	std::vector<const unit_type*>* unit_types_;
	int side_;
};


void show_unit_description(const unit_type &t);
void show_unit_description(const unit &u);

network::connection network_send_dialog(display& disp, const std::string& msg, config& cfg, network::connection connection_num=0);
network::connection network_receive_dialog(display& disp, const std::string& msg, config& cfg, network::connection connection_num=0);
network::connection network_connect_dialog(display& disp, const std::string& msg, const std::string& hostname, int port);

} //end namespace dialogs

#endif