nkeynes@691: /**
nkeynes@691:  * $Id$
nkeynes@691:  *
nkeynes@691:  * GD-Rom list manager - maintains the list of recently accessed images and
nkeynes@691:  * available devices for the UI + config. 
nkeynes@691:  *
nkeynes@691:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@691:  *
nkeynes@691:  * This program is free software; you can redistribute it and/or modify
nkeynes@691:  * it under the terms of the GNU General Public License as published by
nkeynes@691:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@691:  * (at your option) any later version.
nkeynes@691:  *
nkeynes@691:  * This program is distributed in the hope that it will be useful,
nkeynes@691:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@691:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@691:  * GNU General Public License for more details.
nkeynes@691:  */
nkeynes@691: 
nkeynes@691: #include <string.h>
nkeynes@691: #include <stdlib.h>
nkeynes@691: #include <glib/gstrfuncs.h>
nkeynes@691: #include <glib/gi18n.h>
nkeynes@691: #include <libgen.h>
nkeynes@691: #include "gdrom/gdrom.h"
nkeynes@691: #include "gdlist.h"
nkeynes@691: #include "lxdream.h"
nkeynes@691: #include "config.h"
nkeynes@691: 
nkeynes@691: #define MAX_RECENT_ITEMS 5
nkeynes@691: 
nkeynes@691: #define FIRST_RECENT_INDEX (gdrom_device_count+2)
nkeynes@691: 
nkeynes@691: DEFINE_HOOK(gdrom_list_change_hook, gdrom_list_change_hook_t);
nkeynes@691: 
nkeynes@691: static GList *gdrom_device_list = NULL;
nkeynes@691: static GList *gdrom_recent_list = NULL;
nkeynes@691: static unsigned int gdrom_device_count = 0, gdrom_recent_count = 0;
nkeynes@691: 
nkeynes@691: gint gdrom_list_find( const gchar *name )
nkeynes@691: {
nkeynes@691:     gint posn = 0;
nkeynes@691:     GList *ptr;
nkeynes@691: 
nkeynes@691:     for( ptr = gdrom_device_list; ptr != NULL; ptr = g_list_next(ptr) ) {
nkeynes@691:         gchar *device = (gchar *)ptr->data;
nkeynes@691:         posn++;
nkeynes@691:         if( strcmp(device, name) == 0 ) {
nkeynes@691:             return posn;
nkeynes@691:         }
nkeynes@691:     }
nkeynes@691:     posn++;
nkeynes@691:     for( ptr = gdrom_recent_list; ptr != NULL; ptr = g_list_next(ptr) ) {
nkeynes@691:         gchar *file = (gchar *)ptr->data;
nkeynes@691:         posn++;
nkeynes@691:         if( strcmp(file, name) == 0 ) {
nkeynes@691:             return posn;
nkeynes@691:         }
nkeynes@691:     }
nkeynes@691:     return -1;
nkeynes@691: }
nkeynes@691: 
nkeynes@691: /**
nkeynes@691:  * Update the recent list in the lxdream config (but does not save)  
nkeynes@691:  */
nkeynes@691: void gdrom_list_update_config()
nkeynes@691: {
nkeynes@691:     GList *ptr;
nkeynes@691:     int size = 0;
nkeynes@691:     for( ptr = gdrom_recent_list; ptr != NULL; ptr = g_list_next(ptr) ) {
nkeynes@691:         size += strlen( (gchar *)ptr->data ) + 1;
nkeynes@691:     }
nkeynes@691:     char buf[size];
nkeynes@691:     strcpy( buf, (gchar *)gdrom_recent_list->data );
nkeynes@691:     for( ptr = g_list_next(gdrom_recent_list); ptr != NULL; ptr = g_list_next(ptr) ) {
nkeynes@691:         strcat( buf, ":" );
nkeynes@691:         strcat( buf, (gchar *)ptr->data );
nkeynes@691:     }
nkeynes@691:     lxdream_set_global_config_value( CONFIG_RECENT, buf );
nkeynes@691: }
nkeynes@691: 
nkeynes@691: 
nkeynes@691: void gdrom_list_add_recent_item( const gchar *name )
nkeynes@691: {
nkeynes@691:     gdrom_recent_list = g_list_prepend( gdrom_recent_list, g_strdup(name) );
nkeynes@691:     if( g_list_length(gdrom_recent_list) > MAX_RECENT_ITEMS ) {
nkeynes@691:         GList *ptr = g_list_nth( gdrom_recent_list, MAX_RECENT_ITEMS );
nkeynes@691:         g_free( ptr->data );
nkeynes@691:         gdrom_recent_list = g_list_remove( gdrom_recent_list, ptr->data );
nkeynes@691:     } else {
nkeynes@691:         gdrom_recent_count ++;
nkeynes@691:     }
nkeynes@691:     gdrom_list_update_config();
nkeynes@691: }
nkeynes@691: 
nkeynes@691: void gdrom_list_move_to_front( const gchar *name )
nkeynes@691: {
nkeynes@691:     GList *ptr;
nkeynes@691:     for( ptr = gdrom_recent_list; ptr != NULL; ptr = g_list_next(ptr) ) {
nkeynes@691:         gchar *file = (gchar *)ptr->data;
nkeynes@691:         if( strcmp(file, name) == 0 ) {
nkeynes@691:             gdrom_recent_list = g_list_delete_link( gdrom_recent_list, ptr );
nkeynes@691:             gdrom_recent_list = g_list_prepend( gdrom_recent_list, file );
nkeynes@691:             gdrom_list_update_config();
nkeynes@691:             return;
nkeynes@691:         }
nkeynes@691:     }
nkeynes@691: }
nkeynes@691: 
nkeynes@691: /**
nkeynes@691:  * Disc-changed callback from the GD-Rom driver. Updates the list accordingly.
nkeynes@691:  */
nkeynes@691: gboolean gdrom_list_disc_changed( gdrom_disc_t disc, const gchar *disc_name, void *user_data )
nkeynes@691: {
nkeynes@691:     gboolean list_changed = FALSE;
nkeynes@691:     int posn = 0;
nkeynes@691:     if( disc != NULL ) {
nkeynes@691:         posn = gdrom_list_find( disc_name );
nkeynes@691:         if( posn == -1 ) {
nkeynes@691:             gdrom_list_add_recent_item( disc_name );
nkeynes@691:             posn = FIRST_RECENT_INDEX;
nkeynes@691:             list_changed = TRUE;
nkeynes@691:         } else if( posn > FIRST_RECENT_INDEX ) {
nkeynes@691:             gdrom_list_move_to_front( disc_name );
nkeynes@691:             posn = FIRST_RECENT_INDEX;
nkeynes@691:             list_changed = TRUE;
nkeynes@691:         }
nkeynes@691:     }
nkeynes@691:     
nkeynes@691:     lxdream_set_global_config_value( CONFIG_GDROM, disc_name );
nkeynes@691:     lxdream_save_config();   
nkeynes@691: 
nkeynes@691:     CALL_HOOKS( gdrom_list_change_hook, list_changed, posn );
nkeynes@691:     return TRUE;
nkeynes@691: }
nkeynes@691: 
nkeynes@691: /**
nkeynes@691:  * Drives-changed callback from the host CD-Rom drivers. Probably not likely to
nkeynes@691:  * happen too often unless you're adding/removing external drives...
nkeynes@691:  */
nkeynes@691: void gdrom_list_drives_changed( GList *device_list )
nkeynes@691: {
nkeynes@691: }
nkeynes@691: 
nkeynes@691: /************ Public interface ***********/
nkeynes@691: 
nkeynes@691: void gdrom_list_init()
nkeynes@691: {
nkeynes@691:     const gchar *recent = lxdream_get_config_value( CONFIG_RECENT );
nkeynes@691:     register_gdrom_disc_change_hook( gdrom_list_disc_changed, NULL );
nkeynes@691:     gdrom_device_list = gdrom_get_native_devices();
nkeynes@691:     if( recent != NULL ) {
nkeynes@691:         gchar **list = g_strsplit(recent, ":", MAX_RECENT_ITEMS);
nkeynes@691:         int i;
nkeynes@691:         for( i=0; list[i] != NULL; i++ ) {
nkeynes@691:             gdrom_recent_list = g_list_append( gdrom_recent_list, g_strdup(list[i]) );
nkeynes@691:         }
nkeynes@691:         g_strfreev(list);
nkeynes@691:     }
nkeynes@691:     gdrom_device_count = g_list_length(gdrom_device_list);
nkeynes@691:     gdrom_recent_count = g_list_length(gdrom_recent_list);
nkeynes@691:     
nkeynes@691:     // Run the hooks in case anyone registered before the list was initialized
nkeynes@691:     CALL_HOOKS( gdrom_list_change_hook, TRUE, gdrom_list_get_selection() );
nkeynes@691: }
nkeynes@691: 
nkeynes@691: gboolean gdrom_list_set_selection( int posn )
nkeynes@691: {
nkeynes@691:     if( posn == 0 ) { // Always 'Empty'
nkeynes@691:         gdrom_unmount_disc();
nkeynes@691:         return TRUE;
nkeynes@691:     }
nkeynes@691:     
nkeynes@691:     if( posn <= gdrom_device_count ) {
nkeynes@691:         gchar *entry = g_list_nth_data(gdrom_device_list, posn-1);
nkeynes@691:         gdrom_mount_image(entry);
nkeynes@691:         return TRUE;
nkeynes@691:     }
nkeynes@691:     
nkeynes@691:     posn -= FIRST_RECENT_INDEX;
nkeynes@691:     if( posn >= 0 && posn < gdrom_recent_count ) {
nkeynes@691:         gchar *entry = g_list_nth_data(gdrom_recent_list, posn);
nkeynes@691:         gdrom_mount_image(entry);
nkeynes@691:         return TRUE;
nkeynes@691:     }
nkeynes@691:     
nkeynes@691:     return FALSE;
nkeynes@691: }
nkeynes@691: 
nkeynes@691: gint gdrom_list_get_selection( )
nkeynes@691: {
nkeynes@691:     const char *name = gdrom_get_current_disc_name();
nkeynes@691:     if( name == NULL ) {
nkeynes@691:         return 0;
nkeynes@691:     } else {
nkeynes@691:         return gdrom_list_find(name);
nkeynes@691:     }
nkeynes@691: }
nkeynes@691: 
nkeynes@691: int gdrom_list_size()
nkeynes@691: {
nkeynes@691:     return gdrom_device_count + gdrom_recent_count + 2;
nkeynes@691: }
nkeynes@691: 
nkeynes@691: const gchar *gdrom_list_get_display_name( int posn )
nkeynes@691: {
nkeynes@691:     if( posn == 0 ) {
nkeynes@691:         return _("Empty");
nkeynes@691:     }
nkeynes@691:     
nkeynes@691:     if( posn <= gdrom_device_count ) {
nkeynes@691:         return g_list_nth_data(gdrom_device_list, posn-1);
nkeynes@691:     }
nkeynes@691:     
nkeynes@691:     if( posn == gdrom_device_count + 1) {
nkeynes@691:         return "";
nkeynes@691:     }
nkeynes@691:     
nkeynes@691:     if( posn < 0 || posn > gdrom_list_size() ) {
nkeynes@691:         return NULL;
nkeynes@691:     }
nkeynes@691: 
nkeynes@691:     gchar *entry = g_list_nth_data(gdrom_recent_list, posn-FIRST_RECENT_INDEX);
nkeynes@691:     return basename(entry);
nkeynes@691: }