st-bookmarks.c

来自「linux下网络收音机的源码」· C语言 代码 · 共 702 行 · 第 1/2 页

  return value_array;
}

/*
 * Create an underlying stream belonging to HANDLER from the values of
 * VALUE_ARRAY.
 */
static STStreamBag *
st_bookmarks_stream_new (STHandler *handler, GValueArray *value_array)
{
  STStreamBag *stream;
  GSList *l;
  int i;
	      
  g_return_val_if_fail(ST_IS_HANDLER(handler), NULL);
  g_return_val_if_fail(value_array != NULL, NULL);

  stream = st_stream_bag_new(handler);
  ST_STREAM(stream)->name = g_strdup("");	/* dummy */

  l = st_handler_get_fields(handler);
  i = 0;

  while (l && i < value_array->n_values)
    {
      STHandlerField *field = l->data;

      if (! ST_HANDLER_FIELD_IS_VOLATILE(field))
	{
	  GValue *value;

	  value = g_value_array_get_nth(value_array, i);
	  if (G_VALUE_TYPE(value) == st_handler_field_get_type(field))
	    st_stream_bag_set_field(stream, field, value);

	  i += 1;
	}

      l = l->next;
    }

  return stream;
}

static void
st_bookmarks_stream_free_cb (STBookmarksStream *stream, gpointer data)
{
  if (stream->stream_bag)
    g_object_unref(stream->stream_bag);

  if (stream->handler_icon)
    g_object_unref(stream->handler_icon);

  g_free(stream->handler_name);
  g_free(stream->name);
  g_free(stream->genre);
  g_free(stream->description);

  st_stream_free((STStream *) stream);
}

static gboolean
st_bookmarks_stream_tune_in_cb (STBookmarksStream *stream,
				gpointer data,
				GError **err)
{
  if (stream->stream_bag)
    {
      if (st_handler_event_is_bound(stream->stream_bag->handler, ST_HANDLER_EVENT_STREAM_TUNE_IN_MULTIPLE))
	{
	  GSList *streams = NULL;
	  gboolean status;

	  streams = g_slist_append(streams, stream->stream_bag);
	  status = st_stream_bag_tune_in_multiple(streams, err);
	  g_slist_free(streams);

	  return status;
	}
      else if (st_handler_event_is_bound(stream->stream_bag->handler, ST_HANDLER_EVENT_STREAM_TUNE_IN))
	return st_stream_bag_tune_in(stream->stream_bag, err);
      else
	{
	  g_set_error(err, 0, 0, _("the %s handler has no tune in capability"),
		      st_handler_get_label(stream->stream_bag->handler));
	  return FALSE;
	}
    }
  else
    {
      g_set_error(err, 0, 0, _("the %s handler is not available"), stream->handler_name);
      return FALSE;
    }
}

static gboolean
st_bookmarks_stream_record_cb (STBookmarksStream *stream,
			       gpointer data,
			       GError **err)
{
  if (stream->stream_bag)
    {
      if (st_handler_event_is_bound(stream->stream_bag->handler, ST_HANDLER_EVENT_STREAM_RECORD))
	return st_stream_bag_record(stream->stream_bag, err);
      else
	{
	  g_set_error(err, 0, 0, _("the %s handler has no record capability"),
		      st_handler_get_label(stream->stream_bag->handler));
	  return FALSE;
	}
    }
  else
    {
      g_set_error(err, 0, 0, _("the %s handler is not available"), stream->handler_name);
      return FALSE;
    }
}

static gboolean
st_bookmarks_stream_browse_cb (STBookmarksStream *stream,
			       gpointer data,
			       GError **err)
{
  if (stream->stream_bag)
    {
      if (st_handler_event_is_bound(stream->stream_bag->handler, ST_HANDLER_EVENT_STREAM_BROWSE))
	return st_stream_bag_browse(stream->stream_bag, err);
      else
	{
	  g_set_error(err, 0, 0, _("the %s handler has no browse capability"),
		      st_handler_get_label(stream->stream_bag->handler));
	  return FALSE;
	}
    }
  else
    {
      g_set_error(err, 0, 0, _("the %s handler is not available"), stream->handler_name);
      return FALSE;
    }
}

void
st_bookmarks_init (void)
{
  GdkPixbuf *pixbuf;
  STStreamStore *bookmarks;
  STHandlerField *field;

  st_bookmarks_handler = st_handler_new("bookmarks");

  st_handler_set_label(st_bookmarks_handler, _("Bookmarks"));
  st_handler_set_copyright(st_bookmarks_handler, "Copyright \302\251 2004 Jean-Yves Lefort");
  st_handler_set_description(st_bookmarks_handler, _("Favourite Streams"));
  st_handler_set_flags(st_bookmarks_handler, ST_HANDLER_NO_CATEGORIES);

  pixbuf = st_pixbuf_new_from_file(ST_PNG("bookmarks"));
  if (pixbuf)
    {
      st_handler_set_icon_from_pixbuf(st_bookmarks_handler, pixbuf);
      g_object_unref(pixbuf);
    }

  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_NEW, st_bookmarks_stream_new_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_FIELD_GET, st_bookmarks_stream_field_get_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_FIELD_SET, st_bookmarks_stream_field_set_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_STOCK_FIELD_GET, st_bookmarks_stream_stock_field_get_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_MODIFY, st_bookmarks_stream_modify_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_DELETE, st_bookmarks_stream_delete_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_FREE, st_bookmarks_stream_free_cb, NULL);

  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_TUNE_IN, st_bookmarks_stream_tune_in_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_RECORD, st_bookmarks_stream_record_cb, NULL);
  st_handler_bind(st_bookmarks_handler, ST_HANDLER_EVENT_STREAM_BROWSE, st_bookmarks_stream_browse_cb, NULL);

  st_handler_add_field(st_bookmarks_handler,
		       st_handler_field_new(FIELD_HANDLER_NAME,
					    _("STHandler"),
					    G_TYPE_STRING,
					    0));

  st_handler_add_field(st_bookmarks_handler,
		       st_handler_field_new(FIELD_STREAM_BAG,
					    _("STStreamBag"),
					    G_TYPE_VALUE_ARRAY,
					    0));

  st_handler_add_field(st_bookmarks_handler,
		       st_handler_field_new(FIELD_HANDLER_ICON,
					    _("Handler icon"),
					    GDK_TYPE_PIXBUF,
					    ST_HANDLER_FIELD_VISIBLE
					    | ST_HANDLER_FIELD_VOLATILE
					    | ST_HANDLER_FIELD_NO_DEDICATED_COLUMN));
  
  field = st_handler_field_new(FIELD_HANDLER_LABEL,
			       _("Handler"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_VOLATILE);
  st_handler_field_set_description(field, _("The stream handler"));
  st_handler_add_field(st_bookmarks_handler, field);

  field = st_handler_field_new(FIELD_NAME,
			       _("Name"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_EDITABLE);
  st_handler_field_set_description(field, _("The stream name"));
  st_handler_add_field(st_bookmarks_handler, field);

  field = st_handler_field_new(FIELD_GENRE,
			       _("Genre"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_EDITABLE);
  st_handler_field_set_description(field, _("The stream genre"));
  st_handler_add_field(st_bookmarks_handler, field);

  field = st_handler_field_new(FIELD_DESCRIPTION,
			       _("Description"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_EDITABLE);
  st_handler_field_set_description(field, _("The stream description"));
  st_handler_add_field(st_bookmarks_handler, field);

  field = st_handler_field_new(FIELD_HOMEPAGE,
			       _("Homepage"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_START_HIDDEN
			       | ST_HANDLER_FIELD_VOLATILE);
  st_handler_field_set_description(field, _("The stream homepage URL"));
  st_handler_add_field(st_bookmarks_handler, field);

  field = st_handler_field_new(FIELD_URI_LIST,
			       _("URI list"),
			       G_TYPE_VALUE_ARRAY,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_START_HIDDEN
			       | ST_HANDLER_FIELD_VOLATILE);
  st_handler_field_set_description(field, _("The stream listen URI list"));
  st_handler_add_field(st_bookmarks_handler, field);

  st_handlers_add(st_bookmarks_handler);

  bookmarks = st_stream_store_new(st_bookmarks_handler);
  st_handler_set_streams(st_bookmarks_handler, ST_CATEGORY_BAG_MAIN, bookmarks);
  g_object_unref(bookmarks);
}

static void
st_bookmarks_make_unique_name (STStreamBag *bag, STStreamStore *bookmarks)
{
  MakeUniqueInfo info = { bag };
  int i = 0;

  g_return_if_fail(ST_IS_STREAM_BAG(bag));
  g_return_if_fail(ST_IS_STREAM_STORE(bookmarks));
  
  do
    {
      g_free(ST_STREAM(bag)->name);
      ST_STREAM(bag)->name = g_strdup_printf("%i", i++);

      info.taken = FALSE;
      st_stream_store_foreach(bookmarks, st_bookmarks_make_unique_name_cb, &info);
    }
  while (info.taken);
}

static gboolean
st_bookmarks_make_unique_name_cb (STStreamStore *store,
				  STStreamBag *bag,
				  gpointer data)
{
  MakeUniqueInfo *info = data;
  return info->taken = ! strcmp(ST_STREAM(bag)->name, ST_STREAM(info->bag)->name);
}

void
st_bookmarks_add (STStreamBag *stream_bag)
{
  STStreamStore *bookmarks;
  STStreamBag *bookmark;

  bookmarks = st_handler_get_streams(st_bookmarks_handler, ST_CATEGORY_BAG_MAIN);
  g_return_if_fail(bookmarks != NULL);

  bookmark = st_stream_bag_new(st_bookmarks_handler);
  st_bookmarks_make_unique_name(bookmark, bookmarks);

  st_bookmarks_stream_set_handler(ST_BOOKMARKS_STREAM(bookmark), stream_bag->handler);
  if (st_handler_event_is_bound(stream_bag->handler, ST_HANDLER_EVENT_STREAM_STOCK_FIELD_GET))
    {
      GValue value = { 0, };
      
      st_stream_bag_get_stock_field(stream_bag, ST_HANDLER_STOCK_FIELD_NAME, &value);
      ST_BOOKMARKS_STREAM(bookmark)->name = g_value_dup_string(&value);
      g_value_unset(&value);

      st_stream_bag_get_stock_field(stream_bag, ST_HANDLER_STOCK_FIELD_GENRE, &value);
      ST_BOOKMARKS_STREAM(bookmark)->genre = g_value_dup_string(&value);
      g_value_unset(&value);

      st_stream_bag_get_stock_field(stream_bag, ST_HANDLER_STOCK_FIELD_DESCRIPTION, &value);
      ST_BOOKMARKS_STREAM(bookmark)->description = g_value_dup_string(&value);
      g_value_unset(&value);
    }
  else
    {
      GString *name = g_string_new(NULL);
      GSList *l;

      /* we form the name by concatenating every visible string field */

      SG_LIST_FOREACH(l, st_handler_get_fields(stream_bag->handler))
        {
	  STHandlerField *field = l->data;

	  if (ST_HANDLER_FIELD_IS_VISIBLE(field) && st_handler_field_get_type(field) == G_TYPE_STRING)
	    {
	      GValue value = { 0, };
	      const char *str;

	      st_stream_bag_get_field(stream_bag, field, &value);
	      str = g_value_get_string(&value);
	      
	      if (str && *str)
		{
		  if (*name->str)
		    g_string_append(name, " - ");
		  g_string_append(name, str);
		}

	      g_value_unset(&value);
	    }
	}
      
      ST_BOOKMARKS_STREAM(bookmark)->name = g_string_free(name, FALSE);
    }
  
  ST_BOOKMARKS_STREAM(bookmark)->stream_bag = g_object_ref(stream_bag);

  st_stream_store_append(bookmarks, bookmark);
  st_stream_store_touch(bookmarks);

  g_object_unref(bookmark);
  g_object_unref(bookmarks);
}