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/*********************************************************************

    uiswlist.c

    Internal MAME user interface for software list.

    Copyright Nicola Salmoria and the MAME Team.
    Visit http://mamedev.org for licensing and usage restrictions.

 *********************************************************************/

#include "emu.h"
#include "ui.h"
#include "uiswlist.h"


/***************************************************************************
    CONSTANTS
***************************************************************************/

/* time (in seconds) to display errors */
#define ERROR_MESSAGE_TIME		5


/***************************************************************************
    TYPE DEFINITIONS
***************************************************************************/

ui_menu_software_parts::ui_menu_software_parts(running_machine &machine, render_container *container, const software_info *_info, const char *_interface, const software_part **part, bool _opt_fmgr, int *_result) : ui_menu(machine, container)
{
	info = _info;
	interface = _interface;
	selected_part = part;
	opt_fmgr = _opt_fmgr;
	result = _result;
}

void ui_menu_software_parts::populate()
{
	for (const software_part *swpart = software_find_part(info, NULL, NULL); swpart != NULL; swpart = software_part_next(swpart))
	{
		if (softlist_contain_interface(interface, swpart->interface_))
		{
			software_part_menu_entry *entry = (software_part_menu_entry *) m_pool_alloc(sizeof(*entry));
			// check if the available parts have specific part_id to be displayed (e.g. "Map Disc", "Bonus Disc", etc.)
			// if not, we simply display "part_name"; if yes we display "part_name (part_id)"
			astring menu_part_name(swpart->name);
			if (software_part_get_feature(swpart, "part_id") != NULL)
			{
				menu_part_name.cat(" (");
				menu_part_name.cat(software_part_get_feature(swpart, "part_id"));
				menu_part_name.cat(")");
			}
			entry->type = T_ENTRY;
			entry->part = swpart;
			item_append(info->shortname, menu_part_name.cstr(), 0, entry);
		}
	}
	if(opt_fmgr) {
		software_part_menu_entry *entry = (software_part_menu_entry *) m_pool_alloc(sizeof(*entry));
		entry->type = T_FMGR;
		entry->part = 0;
		item_append("[file manager]", 0, 0, entry);
	}
}

ui_menu_software_parts::~ui_menu_software_parts()
{
}

void ui_menu_software_parts::handle()
{
	/* process the menu */
	const ui_menu_event *event = process(0);

	if (event != NULL && event->iptkey == IPT_UI_SELECT && event->itemref != NULL)
	{
		software_part_menu_entry *entry = (software_part_menu_entry *) event->itemref;
		*result = entry->type;
		*selected_part = entry->part;
		ui_menu::stack_pop(machine());
	}
}

int ui_menu_software_list::compare_entries(const entry_info *e1, const entry_info *e2, bool shortname)
{
	int result;
	const char *e1_basename;
	const char *e2_basename;

	if (shortname)
	{
		e1_basename = (e1->short_name != NULL) ? e1->short_name : "";
		e2_basename = (e2->short_name != NULL) ? e2->short_name : "";
	}
	else
	{
		e1_basename = (e1->long_name != NULL) ? e1->long_name : "";
		e2_basename = (e2->long_name != NULL) ? e2->long_name : "";
	}

	result = mame_stricmp(e1_basename, e2_basename);
	if (result == 0)
	{
		result = strcmp(e1_basename, e2_basename);
		if (result == 0)
		{
			if (e1 < e2)
				result = -1;
			else if (e1 > e2)
				result = 1;
		}
	}

	return result;
}

/* populate a specific list */

ui_menu_software_list::entry_info *ui_menu_software_list::append_software_entry(const software_info *swinfo)
{
	entry_info *entry = NULL;
	entry_info **entryptr;
	bool entry_updated = FALSE;

	// check if at least one of the parts has the correct interface and add a menu entry only in this case
	for (const software_part *swpart = software_find_part(swinfo, NULL, NULL); swpart != NULL; swpart = software_part_next(swpart))
	{
		if ((softlist_contain_interface(interface, swpart->interface_)) && is_software_compatible(swpart, swlist))
		{
			entry_updated = TRUE;
			// allocate a new entry
			entry = (entry_info *) m_pool_alloc(sizeof(*entry));
			memset(entry, 0, sizeof(*entry));

			entry->short_name = pool_strdup(swinfo->shortname);
			entry->long_name = pool_strdup(swinfo->longname);
			break;
		}
	}

	// skip this if no new entry has been allocated (e.g. if the software has no matching interface for this image device)
	if (entry_updated)
	{
		// find the end of the list
		entryptr = &entrylist;
		while ((*entryptr != NULL) && (compare_entries(entry, *entryptr, ordered_by_shortname) >= 0))
			entryptr = &(*entryptr)->next;

		// insert the entry
		entry->next = *entryptr;
		*entryptr = entry;
	}

	return entry;
}

ui_menu_software_list::ui_menu_software_list(running_machine &machine, render_container *container, const software_list_device *_swlist, const char *_interface, astring &_result) : ui_menu(machine, container), result(_result)
{
	swlist = _swlist;
	interface = _interface;
	entrylist = NULL;
	ordered_by_shortname = true;
}

ui_menu_software_list::~ui_menu_software_list()
{
}

void ui_menu_software_list::populate()
{
	const software_list *list = software_list_open(machine().options(), swlist->list_name(), false, NULL);

	// build up the list of entries for the menu
	if (list)
	{
		for (const software_info *swinfo = software_list_find(list, "*", NULL); swinfo != NULL; swinfo = software_list_find(list, "*", swinfo))
			append_software_entry(swinfo);

		software_list_close(list);
	}

	// add an entry to change ordering
	item_append("Switch Item Ordering", NULL, 0, (void *)1);

	// append all of the menu entries
	for (entry_info *entry = entrylist; entry != NULL; entry = entry->next)
		item_append(entry->short_name, entry->long_name, 0, entry);
}

void ui_menu_software_list::handle()
{
	const entry_info *entry;
	const entry_info *selected_entry = NULL;
	int bestmatch = 0;

	/* process the menu */
	const ui_menu_event *event = process(0);

	if (event != NULL && event->itemref != NULL)
	{
		if ((FPTR)event->itemref == 1 && event->iptkey == IPT_UI_SELECT)
		{
			ordered_by_shortname = !ordered_by_shortname;
			entrylist = NULL;
			// reset the char buffer if we change ordering criterion
			memset(filename_buffer, '\0', ARRAY_LENGTH(filename_buffer));

			// reload the menu with the new order
			reset(UI_MENU_RESET_REMEMBER_REF);
			popmessage("Switched Order: entries now ordered by %s", ordered_by_shortname ? "shortname" : "description");
		}
		/* handle selections */
		else if (event->iptkey == IPT_UI_SELECT)
		{
			entry_info *entry = (entry_info *) event->itemref;
			result = entry->short_name;
			ui_menu::stack_pop(machine());
		}
		else if (event->iptkey == IPT_SPECIAL)
		{
			int buflen = strlen(filename_buffer);
			bool update_selected = false;

			/* if it's a backspace and we can handle it, do so */
			if ((event->unichar == 8 || event->unichar == 0x7f) && buflen > 0)
			{
				*(char *)utf8_previous_char(&filename_buffer[buflen]) = 0;
				update_selected = true;

				if (ARRAY_LENGTH(filename_buffer) > 0)
					ui_popup_time(ERROR_MESSAGE_TIME, "%s", filename_buffer);
			}
			/* if it's any other key and we're not maxed out, update */
			else if (event->unichar >= ' ' && event->unichar < 0x7f)
			{
				buflen += utf8_from_uchar(&filename_buffer[buflen], ARRAY_LENGTH(filename_buffer) - buflen, event->unichar);
				filename_buffer[buflen] = 0;
				update_selected = true;

				if (ARRAY_LENGTH(filename_buffer) > 0)
					ui_popup_time(ERROR_MESSAGE_TIME, "%s", filename_buffer);
			}

			if (update_selected)
			{
				const entry_info *cur_selected;

				// if the current selection is a software entry, start search from here
				if ((FPTR)event->itemref != 1)
					cur_selected= (const entry_info *)get_selection();
				// else (if we are on the 'Switch Order' entry) start from the beginning
				else
					cur_selected= entrylist;

				// check for entries which matches our filename_buffer:
				// from current entry to the end
				for (entry = cur_selected; entry != NULL; entry = entry->next)
				{
					const char *compare_name = ordered_by_shortname ? entry->short_name : entry->long_name;

					if (compare_name != NULL && filename_buffer != NULL)
					{
						int match = 0;
						for (int i = 0; i < ARRAY_LENGTH(filename_buffer); i++)
						{
							if (mame_strnicmp(compare_name, filename_buffer, i) == 0)
								match = i;
						}

						if (match > bestmatch)
						{
							bestmatch = match;
							selected_entry = entry;
						}
					}
				}
				// and from the first entry to current one
				for (entry = entrylist; entry != cur_selected; entry = entry->next)
				{
					const char *compare_name = ordered_by_shortname ? entry->short_name : entry->long_name;

					if (compare_name != NULL && filename_buffer != NULL)
					{
						int match = 0;
						for (int i = 0; i < ARRAY_LENGTH(filename_buffer); i++)
						{
							if (mame_strnicmp(compare_name, filename_buffer, i) == 0)
								match = i;
						}

						if (match > bestmatch)
						{
							bestmatch = match;
							selected_entry = entry;
						}
					}
				}

				if (selected_entry != NULL && selected_entry != cur_selected)
					set_selection((void *) selected_entry);
			}
		}
		else if (event->iptkey == IPT_UI_CANCEL)
		{
			// reset the char buffer also in this case
			if (filename_buffer[0] != '\0')
				memset(filename_buffer, '\0', ARRAY_LENGTH(filename_buffer));
			result = filename_buffer;
			ui_menu::stack_pop(machine());
		}
	}
}

/* list of available software lists - i.e. cartridges, floppies */
ui_menu_software::ui_menu_software(running_machine &machine, render_container *container, const char *_interface, const software_list_device **_result) : ui_menu(machine, container)
{
	interface = _interface;
	result = _result;
}

void ui_menu_software::populate()
{
	bool haveCompatible = false;

	// Add original software lists for this system
	software_list_device_iterator iter(machine().config().root_device());
	for (const software_list_device *swlist = iter.first(); swlist != NULL; swlist = iter.next())
	{
		if (swlist->list_type() == SOFTWARE_LIST_ORIGINAL_SYSTEM)
		{
			const software_list *list = software_list_open(machine().options(), swlist->list_name(), false, NULL);

			if (list && interface)
			{
				bool found = false;
				for (const software_info *swinfo = software_list_find(list, "*", NULL); swinfo != NULL; swinfo = software_list_find(list, "*", swinfo))
				{
					const software_part *part = software_find_part(swinfo, NULL, NULL);
					if (softlist_contain_interface(interface,part->interface_)) {
						found = true;
					}
				}
				if (found) {
					item_append(list->description, NULL, 0, (void *)swlist);
				}

				software_list_close(list);
			}
		}
	}

	// Add compatible software lists for this system
	for (const software_list_device *swlist = iter.first(); swlist != NULL; swlist = iter.next())
	{
		if (swlist->list_type() == SOFTWARE_LIST_COMPATIBLE_SYSTEM)
		{
			const software_list *list = software_list_open(machine().options(), swlist->list_name(), false, NULL);

			if (list && interface)
			{
				bool found = false;
				for (const software_info *swinfo = software_list_find(list, "*", NULL); swinfo != NULL; swinfo = software_list_find(list, "*", swinfo))
				{
					const software_part *part = software_find_part(swinfo, NULL, NULL);
					if (softlist_contain_interface(interface,part->interface_)) {
						found = true;
					}
				}
				if (found) {
					if (!haveCompatible) {
						item_append("[compatible lists]", NULL, MENU_FLAG_DISABLE, NULL);
					}
					item_append(list->description, NULL, 0, (void *)swlist);
				}

				haveCompatible = true;
				software_list_close(list);
			}
		}
	}

}

ui_menu_software::~ui_menu_software()
{
}

void ui_menu_software::handle()
{
	/* process the menu */
	const ui_menu_event *event = process(0);

	if (event != NULL && event->iptkey == IPT_UI_SELECT) {
		//      ui_menu::stack_push(auto_alloc_clear(machine(), ui_menu_software_list(machine(), container, (software_list_config *)event->itemref, image)));
		*result = (software_list_device *)event->itemref;
		ui_menu::stack_pop(machine());
	}
}