[grilo] core: Add synchronous version of grl_multiple_search() function

[Juan A. Suarez Romero <jasuarez src gnome org>]

commit a0cb88ae84053e345f43da464ef5d25c402d2aba
Author: Juan A. Suarez Romero <jasuarez igalia com>
Date:   Thu Jul 15 14:29:37 2010 +0200

    core: Add synchronous version of grl_multiple_search() function

 src/grl-multiple.c |   88 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/grl-multiple.h |    6 +++
 2 files changed, 94 insertions(+), 0 deletions(-)
---
diff --git a/src/grl-multiple.c b/src/grl-multiple.c
index 7bacfbf..0eb8f8c 100644
--- a/src/grl-multiple.c
+++ b/src/grl-multiple.c
@@ -21,6 +21,7 @@
  */
 
 #include "grl-multiple.h"
+#include "grl-sync-priv.h"
 #include "grl-plugin-registry.h"
 #include "grl-error.h"
 
@@ -265,6 +266,40 @@ chain_multiple_search_operation (struct MultipleSearchData *old_msd)
 }
 
 static void
+multiple_result_async_cb (GrlMediaSource *source,
+                          guint op_id,
+                          GrlMedia *media,
+                          guint remaining,
+                          gpointer user_data,
+                          const GError *error)
+{
+  GrlDataSync *ds = (GrlDataSync *) user_data;
+
+  g_debug ("multiple_result_async_cb");
+
+  if (error) {
+    ds->error = g_error_copy (error);
+
+    /* Free previous results */
+    g_list_foreach (ds->data, (GFunc) g_object_unref, NULL);
+    g_list_free (ds->data);
+
+    ds->data = NULL;
+    ds->complete = TRUE;
+    return;
+  }
+
+  if (media) {
+    ds->data = g_list_prepend (ds->data, media);
+  }
+
+  if (remaining == 0) {
+    ds->data = g_list_reverse (ds->data);
+    ds->complete = TRUE;
+  }
+}
+
+static void
 multiple_search_cb (GrlMediaSource *source,
 		    guint search_id,
 		    GrlMedia *media,
@@ -531,3 +566,56 @@ grl_multiple_cancel (guint search_id)
   /* Send operation finished message now to client (remaining == 0) */
   g_idle_add (confirm_cancel_idle, msd);
 }
+
+/**
+ * grl_multiple_search_sync:
+ * @sources: a list of sources where to search
+ * @text: the text to search
+ * @keys: the list of #GrlKeyID to request
+ * @count: the number of elements to retrieve in the operation
+ * @flags: the resolution mode
+ * @error: a #GError, or @NULL
+ *
+ * Search for the @text string in a list of sources for data identified with
+ * that string.
+ *
+ * This method is synchronous.
+ *
+ * Returns: a list with #GrlMedia elements
+ */
+GList *
+grl_multiple_search_sync (const GList *sources,
+                          const gchar *text,
+                          const GList *keys,
+                          guint count,
+                          GrlMetadataResolutionFlags flags,
+                          GError **error)
+{
+  GrlDataSync *ds;
+  GList *result;
+
+  ds = g_slice_new0 (GrlDataSync);
+
+  grl_multiple_search (sources,
+                       text,
+                       keys,
+                       count,
+                       flags,
+                       multiple_result_async_cb,
+                       ds);
+
+  grl_wait_for_async_operation_complete (ds);
+
+  if (ds->error) {
+    if (error) {
+      *error = ds->error;
+    } else {
+      g_error_free (ds->error);
+    }
+  }
+
+  result = (GList *) ds->data;
+  g_slice_free (GrlDataSync, ds);
+
+  return result;
+}
diff --git a/src/grl-multiple.h b/src/grl-multiple.h
index 4a0c5ba..ebbe243 100644
--- a/src/grl-multiple.h
+++ b/src/grl-multiple.h
@@ -39,6 +39,12 @@ guint grl_multiple_search (const GList *sources,
 			   GrlMediaSourceResultCb callback,
 			   gpointer user_data);
 
+GList *grl_multiple_search_sync (const GList *sources,
+                                 const gchar *text,
+                                 const GList *keys,
+                                 guint count,
+                                 GrlMetadataResolutionFlags flags,
+                                 GError **error);
 
 void grl_multiple_cancel (guint search_id);