Added an experimental artist (browser) screen

git-svn-id: https://svn.musicpd.org/ncmpc/trunk@3322 09075e82-0dd4-0310-85a5-a0d7c8717e4f

10 files changed, 492 insertions, 13 deletions

diff --git a/configure.ac b/configure.ac
index a9929f237..cdcab65b7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,6 +171,18 @@ if test "x$artist_screen" != "xyes" ; then
    AC_DEFINE(DISABLE_ARTIST_SCREEN, 1, [Disable artist screen])
 fi
 
+dnl artist screen
+AC_MSG_CHECKING([whether to include the artist screen])
+AC_ARG_ENABLE([artist-screen], 
+              AC_HELP_STRING([--enable-artist-screen],
+	                     [Enable artist screen (EXPERIMENTAL) @<:@default=no@:>@]),
+	      [artist_screen="$enableval"],
+	      [artist_screen=no])
+AC_MSG_RESULT([$artist_screen])
+if test "x$artist_screen" != "xyes" ; then
+   AC_DEFINE(DISABLE_ARTIST_SCREEN, 1, [Disable artist screen])
+fi
+
 dnl search screen
 AC_MSG_CHECKING([whether to include the search screen])
 AC_ARG_ENABLE([search-screen], 
diff --git a/src/Makefile.am b/src/Makefile.am
index 796ac8d9d..f68653731 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -15,7 +15,8 @@ ncmpc_headers = libmpdclient.h mpdclient.h options.h conf.h command.h \
 
 ncmpc_SOURCES = libmpdclient.c main.c mpdclient.c options.c conf.c command.c \
 		screen.c screen_utils.c screen_play.c screen_file.c \
-		screen_search.c screen_help.c screen_keydef.c screen_clock.c \
+		screen_artist.c screen_search.c screen_help.c \
+                screen_keydef.c screen_clock.c \
                 list_window.c colors.c support.c wreadln.c strfsong.c utils.c \
                 $(ncmpc_headers)
 
diff --git a/src/command.c b/src/command.c
index 5b235e678..f94481ccc 100644
--- a/src/command.c
+++ b/src/command.c
@@ -172,15 +172,19 @@ static command_definition_t cmds[] =
 
 
   /* extra screens */
+#ifdef ENABLE_ARTIST_SCREEN
+  { {'4',  F4,   0 }, 0, CMD_SCREEN_ARTIST,    "screen-artist",
+    N_("Artist screen") },
+#endif
 #ifdef ENABLE_SEARCH_SCREEN
-  { {'4',  F4,   0 }, 0, CMD_SCREEN_SEARCH,    "screen-search",
+  { {'5',  F5,   0 }, 0, CMD_SCREEN_SEARCH,    "screen-search",
     N_("Search screen") },
   { {'m',   0,   0 }, 0, CMD_SEARCH_MODE,      "search-mode",
     N_("Change search mode") },
 #endif
 
 #ifdef ENABLE_CLOCK_SCREEN
-  { {'5',  F5,   0 }, 0, CMD_SCREEN_CLOCK,    "screen-clock",
+  { {'6',  F6,   0 }, 0, CMD_SCREEN_CLOCK,    "screen-clock",
     N_("Clock screen") },
 #endif
 
diff --git a/src/command.h b/src/command.h
index 29e6a0637..9a8030284 100644
--- a/src/command.h
+++ b/src/command.h
@@ -47,6 +47,7 @@ typedef enum
   CMD_SCREEN_NEXT,
   CMD_SCREEN_PLAY,
   CMD_SCREEN_FILE,
+  CMD_SCREEN_ARTIST,
   CMD_SCREEN_SEARCH,
   CMD_SCREEN_KEYDEF,
   CMD_SCREEN_CLOCK,
diff --git a/src/mpdclient.c b/src/mpdclient.c
index 7cec3c967..03c69f30e 100644
--- a/src/mpdclient.c
+++ b/src/mpdclient.c
@@ -39,6 +39,8 @@
 
 #define MPD_ERROR(c) (c==NULL || c->connection==NULL || c->connection->error)
 
+/* from utils.c */
+extern GList *string_list_free(GList *string_list);
 
 /* Error callbacks */
 static gint
@@ -883,13 +885,12 @@ mpdclient_filelist_get(mpdclient_t *c, gchar *path)
 }
 
 mpdclient_filelist_t *
-mpdclient_filelist_search(mpdclient_t *c, int table, gchar *filter)
+mpdclient_filelist_search_utf8(mpdclient_t *c, int table, gchar *filter_utf8)
 {
   mpdclient_filelist_t *filelist;
   mpd_InfoEntity *entity;
-  gchar *filter_utf8 = locale_to_utf8(filter);
 
-  D("mpdclient_filelist_filter(%s)\n", filter);
+  D("mpdclient_filelist_search(%s)\n", filter_utf8);
   mpd_sendSearchCommand(c->connection, table, filter_utf8);
   filelist = g_malloc0(sizeof(mpdclient_filelist_t));
 
@@ -903,17 +904,27 @@ mpdclient_filelist_search(mpdclient_t *c, int table, gchar *filter)
     }
   
   if( mpdclient_finish_command(c) )
-    {
-      g_free(filter_utf8);
-      return mpdclient_filelist_free(filelist);
-    }
-  
-  g_free(filter_utf8);
+    return mpdclient_filelist_free(filelist);
+
   filelist->updated = TRUE;
 
   return filelist;
 }
 
+
+mpdclient_filelist_t *
+mpdclient_filelist_search(mpdclient_t *c, int table, gchar *filter)
+{
+  mpdclient_filelist_t *filelist;
+  gchar *filter_utf8 = locale_to_utf8(filter);
+
+  D("mpdclient_filelist_search(%s)\n", filter);
+  filelist = mpdclient_filelist_search_utf8(c, table, filter_utf8);
+  g_free(filter_utf8);
+
+  return filelist;
+}
+
 mpdclient_filelist_t *
 mpdclient_filelist_update(mpdclient_t *c, mpdclient_filelist_t *filelist)
 {
@@ -954,9 +965,45 @@ mpdclient_filelist_find_song(mpdclient_filelist_t *fl, mpd_Song *song)
 }
 
 
+GList *
+mpdclient_get_artists_utf8(mpdclient_t *c)
+{
+  gchar *str = NULL; 
+  GList *list = NULL;
+
+  D("mpdclient_get_artists()\n");
+  mpd_sendListCommand(c->connection, MPD_TABLE_ARTIST, NULL);
+  while( (str=mpd_getNextArtist(c->connection)) )
+    {
+      list = g_list_append(list, (gpointer) str);
+    }
+  if( mpdclient_finish_command(c) )
+    {
+      return string_list_free(list);
+    }  
 
+  return list;
+}
 
+GList *
+mpdclient_get_albums_utf8(mpdclient_t *c, gchar *artist_utf8)
+{
+  gchar *str = NULL; 
+  GList *list = NULL;
 
+  D("mpdclient_get_albums(%s)\n", artist_utf8);
+  mpd_sendListCommand(c->connection, MPD_TABLE_ALBUM, artist_utf8);
+  while( (str=mpd_getNextAlbum(c->connection)) )
+    {
+      list = g_list_append(list, (gpointer) str);
+    }
+  if( mpdclient_finish_command(c) )
+    {
+      return string_list_free(list);
+    }  
+  
+  return list;
+}
 
 
 
diff --git a/src/mpdclient.h b/src/mpdclient.h
index 89a2e6327..a14811b5a 100644
--- a/src/mpdclient.h
+++ b/src/mpdclient.h
@@ -104,6 +104,10 @@ gint mpdclient_cmd_load_playlist_utf8(mpdclient_t *c, gchar *filename_utf8);
 gint mpdclient_cmd_delete_playlist(mpdclient_t *c, gchar *filename);
 gint mpdclient_cmd_delete_playlist_utf8(mpdclient_t *c, gchar *filename_utf8);
 
+/* list functions */
+GList *mpdclient_get_artists_utf8(mpdclient_t *c);
+GList *mpdclient_get_albums_utf8(mpdclient_t *c, gchar *artist_utf8);
+
 
 /*** error callbacks *****************************************************/ 
 
@@ -161,6 +165,9 @@ mpdclient_filelist_t *mpdclient_filelist_get(mpdclient_t *c, gchar *path);
 mpdclient_filelist_t *mpdclient_filelist_search(mpdclient_t *c, 
 						int table,
 						gchar *path);
+mpdclient_filelist_t *mpdclient_filelist_search_utf8(mpdclient_t *c, 
+						     int table,
+						     gchar *path);
 mpdclient_filelist_t *mpdclient_filelist_update(mpdclient_t *c, 
 						mpdclient_filelist_t *flist);
 
diff --git a/src/ncmpc.h b/src/ncmpc.h
index 0c72a099f..194d7ac5c 100644
--- a/src/ncmpc.h
+++ b/src/ncmpc.h
@@ -5,6 +5,9 @@
 #include "config.h"
 #endif
 
+#ifndef DISABLE_ARTIST_SCREEN
+#define ENABLE_ARTIST_SCREEN 1
+#endif
 #ifndef DISABLE_SEARCH_SCREEN
 #define ENABLE_SEARCH_SCREEN 1
 #endif
diff --git a/src/screen.c b/src/screen.c
index 0c56a7420..b5a1d473a 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -44,17 +44,20 @@
 
 #define SCREEN_PLAYLIST_ID     0
 #define SCREEN_BROWSE_ID       1
+#define SCREEN_ARTIST_ID       2
 #define SCREEN_HELP_ID         100
 #define SCREEN_KEYDEF_ID       101
 #define SCREEN_CLOCK_ID        102
 #define SCREEN_SEARCH_ID       103
 
 
+
 /* screens */
 extern screen_functions_t *get_screen_playlist(void);
 extern screen_functions_t *get_screen_browse(void);
 extern screen_functions_t *get_screen_help(void);
 extern screen_functions_t *get_screen_search(void);
+extern screen_functions_t *get_screen_artist(void);
 extern screen_functions_t *get_screen_keydef(void);
 extern screen_functions_t *get_screen_clock(void);
 
@@ -72,6 +75,9 @@ static screen_mode_info_t screens[] = {
   { SCREEN_PLAYLIST_ID, "playlist", get_screen_playlist },
   { SCREEN_BROWSE_ID,   "browse",   get_screen_browse },
   { SCREEN_HELP_ID,     "help",     get_screen_help },
+#ifdef ENABLE_ARTIST_SCREEN
+  { SCREEN_ARTIST_ID,   "artist",   get_screen_artist },
+#endif
 #ifdef ENABLE_SEARCH_SCREEN
   { SCREEN_SEARCH_ID,   "search",   get_screen_search },
 #endif
@@ -176,6 +182,12 @@ paint_top_window(char *header, mpdclient_t *c, int clear)
 	  waddstr(w, get_key_names(CMD_SCREEN_FILE, FALSE));
 	  colors_use(w, COLOR_TITLE);
 	  waddstr(w, _(":Browse  "));
+#ifdef ENABLE_ARTIST_SCREEN
+	  colors_use(w, COLOR_TITLE_BOLD);
+	  waddstr(w, get_key_names(CMD_SCREEN_ARTIST, FALSE));
+	  colors_use(w, COLOR_TITLE);
+	  waddstr(w, _(":Artist  "));
+#endif
 #ifdef ENABLE_SEARCH_SCREEN
 	  colors_use(w, COLOR_TITLE_BOLD);
 	  waddstr(w, get_key_names(CMD_SCREEN_SEARCH, FALSE));
@@ -888,6 +900,9 @@ screen_cmd(mpdclient_t *c, command_t cmd)
     case CMD_SCREEN_SEARCH:
       switch_screen_mode(SCREEN_SEARCH_ID, c);
       break;
+    case CMD_SCREEN_ARTIST:
+      switch_screen_mode(SCREEN_ARTIST_ID, c);
+      break;
     case CMD_SCREEN_KEYDEF:
       switch_screen_mode(SCREEN_KEYDEF_ID, c);
       break;
diff --git a/src/screen_artist.c b/src/screen_artist.c
new file mode 100644
index 000000000..e09d9f049
--- /dev/null
+++ b/src/screen_artist.c
@@ -0,0 +1,389 @@
+/* 
+ * $Id$
+ *
+ * (c) 2004 by Kalle Wallin <kaw@linux.se>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+#include <ncurses.h>
+
+#include "config.h"
+#ifndef DISABLE_ARTIST_SCREEN
+#include "ncmpc.h"
+#include "options.h"
+#include "support.h"
+#include "mpdclient.h"
+#include "utils.h"
+#include "strfsong.h"
+#include "command.h"
+#include "screen.h"
+#include "screen_utils.h"
+#include "screen_browse.h"
+
+#define BUFSIZE 1024
+
+static char *artist = NULL;
+static char *album  = NULL;
+static list_window_t *lw = NULL;
+static mpdclient_filelist_t *filelist = NULL;
+static int metalist_length = 0;
+static GList *metalist = NULL;
+static GList *lw_state_list = NULL;
+
+/* store current state when entering a subdirectory */
+static void
+push_lw_state(void)
+{
+  list_window_t *tmp = g_malloc(sizeof(list_window_t));
+
+  memcpy(tmp, lw, sizeof(list_window_t));
+  lw_state_list = g_list_prepend(lw_state_list, (gpointer) tmp);
+}
+
+/* get previous state when leaving a directory */
+static void
+pop_lw_state(void)
+{
+  if( lw_state_list )
+    {
+      list_window_t *tmp = lw_state_list->data;
+
+      memcpy(lw, tmp, sizeof(list_window_t));
+      g_free(tmp);
+      lw_state_list->data = NULL;
+      lw_state_list = g_list_delete_link(lw_state_list, lw_state_list);
+    }
+}
+
+/* list_window callback */
+static char *
+artist_lw_callback(int index, int *highlight, void *data)
+{
+  static char buf[BUFSIZE];
+  char *str, *str_utf8;
+  
+  *highlight = 0;
+  if( (str_utf8=(char *) g_list_nth_data(metalist,index))==NULL )
+    return NULL;
+
+  str = utf8_to_locale(str_utf8);
+  g_snprintf(buf, BUFSIZE, "[%s]", str);
+  g_free(str);
+
+  return buf;
+}
+
+/* the playlist have been updated -> fix highlights */
+static void 
+playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
+{
+  if( filelist==NULL )
+    return;
+  D("screen_artist.c> playlist_callback() [%d]\n", event);
+  switch(event)
+    {
+    case PLAYLIST_EVENT_CLEAR:
+      clear_highlights(filelist);
+      break;
+    default:
+      sync_highlights(c, filelist);
+      break;
+    }
+}
+
+static void
+update_metalist(mpdclient_t *c, char *m_artist, char *m_album)
+{
+  g_free(artist);
+  g_free(album);
+  artist = NULL;
+  album = NULL;
+  if( metalist )
+    metalist = string_list_free(metalist);
+  if (filelist ) {
+    mpdclient_remove_playlist_callback(c, playlist_changed_callback);
+    filelist = mpdclient_filelist_free(filelist);
+  }
+  if( m_album ) /* retreive songs... */
+    {
+      artist = m_artist;
+      album = m_album;
+      if( album[0] == 0 )
+	{
+	  album = g_strdup(_("All tracks"));
+	  filelist = mpdclient_filelist_search_utf8(c,  
+						    MPD_TABLE_ARTIST,
+						    artist);
+	}
+      else
+	filelist = mpdclient_filelist_search_utf8(c,  
+						  MPD_TABLE_ALBUM,
+						  album);
+      /* add a dummy entry for ".." */
+      filelist_entry_t *entry = g_malloc0(sizeof(filelist_entry_t));
+      entry->entity = NULL;
+      filelist->list = g_list_insert(filelist->list, entry, 0);
+      filelist->length++;
+      /* install playlist callback and fix highlights */
+      sync_highlights(c, filelist);
+      mpdclient_install_playlist_callback(c, playlist_changed_callback);
+    }
+  else if( m_artist ) /* retreive albums... */
+    {
+      artist = m_artist;
+      metalist = mpdclient_get_albums_utf8(c, m_artist);
+      /* add a dummy entry for ".." */
+      metalist = g_list_insert(metalist, g_strdup(".."), 0);
+      /* add a dummy entry for all songs */
+      metalist = g_list_insert(metalist, g_strdup(_("All tracks")), -1);
+
+    }
+  else /* retreive artists... */
+    {
+      metalist = mpdclient_get_artists_utf8(c);
+    }
+  metalist_length = g_list_length(metalist);
+}
+
+static void
+init(WINDOW *w, int cols, int rows)
+{
+  lw = list_window_init(w, cols, rows);
+  artist = NULL;
+  album = NULL;
+}
+
+static void
+quit(void)
+{
+  /* clear list window state */
+  if( lw_state_list )
+    {
+      GList *list = lw_state_list;
+      while( list )
+	{
+	  g_free(list->data);
+	  list->data = NULL;
+	  list = list->next;
+	}
+      g_list_free(lw_state_list);
+      lw_state_list = NULL;
+    }
+  
+  if( filelist )
+    filelist = mpdclient_filelist_free(filelist);
+  if( metalist )
+    metalist = string_list_free(metalist);
+  g_free(artist);
+  g_free(album);
+  artist = NULL;
+  album = NULL;
+  list_window_free(lw);  
+}
+
+static void
+open(screen_t *screen, mpdclient_t *c)
+{
+  if( metalist==NULL && filelist ==NULL)
+    update_metalist(c, NULL, NULL);
+}
+
+static void
+resize(int cols, int rows)
+{
+  lw->cols = cols;
+  lw->rows = rows;
+}
+
+static void
+close(void)
+{
+}
+
+static void 
+paint(screen_t *screen, mpdclient_t *c)
+{
+  lw->clear = 1;
+  
+  if( filelist )
+    {
+      list_window_paint(lw, browse_lw_callback, (void *) filelist);
+      filelist->updated = FALSE;
+    }
+  else if( metalist )
+    {
+      list_window_paint(lw, artist_lw_callback, (void *) metalist);
+    }
+  else
+    {
+      wmove(lw->w, 0, 0);
+      wclrtobot(lw->w);
+    }
+  wnoutrefresh(lw->w);
+}
+
+static void 
+update(screen_t *screen, mpdclient_t *c)
+{
+  if( filelist==NULL || filelist->updated )
+    {
+      paint(screen, c);
+      return;
+    }
+  list_window_paint(lw, browse_lw_callback, (void *) filelist);
+  wnoutrefresh(lw->w);
+}
+
+static char *
+get_title(char *str, size_t size)
+{
+  char *s1 = artist ? utf8_to_locale(artist) : NULL;
+  char *s2 = album ? utf8_to_locale(album) : NULL;
+
+  if( album )
+    g_snprintf(str, size,  _("Artist: %s - %s"), s1, s2);
+  else if( artist )
+    g_snprintf(str, size,  _("Artist: %s"), s1);
+  else
+    g_snprintf(str, size,  _("Artist: [db browser - EXPERIMENTAL]"));
+  g_free(s1);
+  g_free(s2);
+  return str;
+}
+
+static list_window_t *
+get_filelist_window()
+{
+  return lw;
+}
+
+static int 
+artist_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
+{
+  switch(cmd)
+    {
+    case CMD_PLAY:
+      if( artist && album )
+	{
+	  if( lw->selected==0 )  /* handle ".." */
+	    {
+	      update_metalist(c, g_strdup(artist), NULL);
+	      list_window_reset(lw);
+	      /* restore previous list window state */
+	      pop_lw_state(); 
+	    }
+	  else
+	    browse_handle_enter(screen, c, lw, filelist);
+	}
+      else if ( artist )
+	{
+	  if( lw->selected == 0 )  /* handle ".." */
+
+	    {
+	      update_metalist(c, NULL, NULL);
+	      list_window_reset(lw);
+	      /* restore previous list window state */
+	      pop_lw_state(); 
+	    }
+	  else if( lw->selected == metalist_length-1) /* handle "show all" */
+	    {
+	      update_metalist(c, g_strdup(artist), g_strdup("\0"));
+	      push_lw_state(); 
+	      list_window_reset(lw);
+	    }
+	  else /* select album */
+	    {
+	      char *selected = (char *) g_list_nth_data(metalist, lw->selected);
+	      update_metalist(c, g_strdup(artist), g_strdup(selected));
+	      push_lw_state(); 
+	      list_window_reset(lw);
+	    }
+	}
+      else
+	{
+	  char *selected = (char *) g_list_nth_data(metalist, lw->selected);
+	  update_metalist(c, g_strdup(selected), NULL);
+	  push_lw_state(); 
+	  list_window_reset(lw);
+	}
+      return 1;
+
+    case CMD_SELECT:
+      if( browse_handle_select(screen, c, lw, filelist) == 0 )
+	{
+	  /* continue and select next item... */
+	  cmd = CMD_LIST_NEXT;
+	}
+      return 1;
+
+      /* continue and update... */
+    case CMD_SCREEN_UPDATE:
+      return 0;
+
+    case CMD_LIST_FIND:
+    case CMD_LIST_RFIND:
+    case CMD_LIST_FIND_NEXT:
+    case CMD_LIST_RFIND_NEXT:
+      if( filelist )
+	return screen_find(screen, c, 
+			   lw, filelist->length,
+			   cmd, browse_lw_callback, (void *) filelist);
+      else if ( metalist )
+	return screen_find(screen, c, 
+			   lw, metalist_length,
+			   cmd, artist_lw_callback, (void *) metalist);
+      else
+	return 1;
+
+    case CMD_MOUSE_EVENT:
+      return browse_handle_mouse_event(screen,c,lw,filelist);
+
+    default:
+      if( filelist )
+	return list_window_cmd(lw, filelist->length, cmd);
+      else if( metalist )
+	return list_window_cmd(lw, metalist_length, cmd);
+    }
+  
+  return 0;
+}
+
+screen_functions_t *
+get_screen_artist(void)
+{
+  static screen_functions_t functions;
+
+  memset(&functions, 0, sizeof(screen_functions_t));
+  functions.init   = init;
+  functions.exit   = quit;
+  functions.open   = open;
+  functions.close  = close;
+  functions.resize = resize;
+  functions.paint  = paint;
+  functions.update = update;
+  functions.cmd    = artist_cmd;
+  functions.get_lw = get_filelist_window;
+  functions.get_title = get_title;
+
+  return &functions;
+}
+
+
+#endif /* ENABLE_ARTIST_SCREEN */
diff --git a/src/screen_search.c b/src/screen_search.c
index 71329f0cc..06677bf06 100644
--- a/src/screen_search.c
+++ b/src/screen_search.c
@@ -194,7 +194,7 @@ paint(screen_t *screen, mpdclient_t *c)
   wnoutrefresh(lw->w);
 }
 
-void 
+static void 
 update(screen_t *screen, mpdclient_t *c)
 {
   if( filelist==NULL || filelist->updated )