[epiphany/gnome-3-20] Save the correct thumbnail mtime in the history service



commit e57f03454891e0f3c3b02ac81e8da719c87aa3c9
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Fri Apr 29 09:14:47 2016 -0500

    Save the correct thumbnail mtime in the history service
    
    Save the thumbnail mtime when saving thumbnails so it actually reflects
    the mtime embedded in the thumbnail, not the time the page was saved in
    the history service. This regressed in 0433ac9. It's only noticeable now
    due to 9754735, which has resulted in thumbnails regularly disappearing
    from the overview.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763184

 embed/ephy-embed-shell.c    |   19 +++++++++--
 lib/ephy-snapshot-service.c |   70 ++++++++++++++++++++++++++++++++++++------
 2 files changed, 75 insertions(+), 14 deletions(-)
---
diff --git a/embed/ephy-embed-shell.c b/embed/ephy-embed-shell.c
index a9901f7..cd74f7d 100644
--- a/embed/ephy-embed-shell.c
+++ b/embed/ephy-embed-shell.c
@@ -376,10 +376,6 @@ ephy_embed_shell_set_thumbnail_path (EphyEmbedShell *shell,
   EphyEmbedShellPrivate *priv = ephy_embed_shell_get_instance_private (shell);
   GList *l;
 
-  ephy_history_service_set_url_thumbnail_time (priv->global_history_service,
-                                               url, mtime,
-                                               NULL, NULL, NULL);
-
   for (l = priv->web_extensions; l; l = g_list_next (l)) {
     EphyWebExtensionProxy *web_extension = (EphyWebExtensionProxy *)l->data;
     if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (web_extension), "initialized"))) {
@@ -432,6 +428,17 @@ ephy_embed_shell_get_global_history_service (EphyEmbedShell *shell)
   return G_OBJECT (priv->global_history_service);
 }
 
+static void
+snapshot_saved_cb (EphySnapshotService *service,
+                   const char          *url,
+                   gint64               mtime,
+                   EphyEmbedShell      *shell)
+{
+  ephy_history_service_set_url_thumbnail_time (EPHY_HISTORY_SERVICE 
(ephy_embed_shell_get_global_history_service (shell)),
+                                               url, mtime,
+                                               NULL, NULL, NULL);
+}
+
 /**
  * ephy_embed_shell_get_encodings:
  * @shell: the #EphyEmbedShell
@@ -831,6 +838,10 @@ ephy_embed_shell_constructed (GObject *object)
     ephy_embed_shell_create_web_context (shell);
     priv->user_content = webkit_user_content_manager_new ();
   }
+
+  g_signal_connect_object (ephy_snapshot_service_get_default (),
+                           "snapshot-saved", G_CALLBACK (snapshot_saved_cb),
+                           shell, 0);
 }
 
 static void
diff --git a/lib/ephy-snapshot-service.c b/lib/ephy-snapshot-service.c
index c1ba49f..e60acf1 100644
--- a/lib/ephy-snapshot-service.c
+++ b/lib/ephy-snapshot-service.c
@@ -39,6 +39,13 @@ struct _EphySnapshotService {
 
 G_DEFINE_TYPE (EphySnapshotService, ephy_snapshot_service, G_TYPE_OBJECT)
 
+enum {
+  SNAPSHOT_SAVED,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
 typedef enum {
   SNAPSHOT_STALE,
   SNAPSHOT_FRESH
@@ -59,6 +66,24 @@ snapshot_path_cached_data_free (SnapshotPathCachedData *data)
 static void
 ephy_snapshot_service_class_init (EphySnapshotServiceClass *klass)
 {
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  /**
+   * EphySnapshotService::snapshot-saved:
+   * @url: the URL the snapshot was saved for
+   * @mtime: the mtime embedded in the snapshot, needed to retrieve it
+   *
+   * The ::snapshot-saved signal is emitted when a new snapshot is saved.
+   **/
+  signals[SNAPSHOT_SAVED] = g_signal_new ("snapshot-saved",
+                                          G_OBJECT_CLASS_TYPE (object_class),
+                                          G_SIGNAL_RUN_LAST,
+                                          0,
+                                          NULL, NULL, NULL,
+                                          G_TYPE_NONE,
+                                          2,
+                                          G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE,
+                                          G_TYPE_INT64);
 }
 
 static void
@@ -656,33 +681,58 @@ ephy_snapshot_service_get_snapshot_finish (EphySnapshotService *service,
 }
 
 typedef struct {
+  EphySnapshotService *service;
   GdkPixbuf *snapshot;
   char *url;
   time_t mtime;
+  gint refcount;
 } SaveSnapshotAsyncData;
 
 static SaveSnapshotAsyncData *
-save_snapshot_async_data_new (GdkPixbuf  *snapshot,
-                              const char *url,
-                              time_t      mtime)
+save_snapshot_async_data_new (EphySnapshotService *service,
+                              GdkPixbuf           *snapshot,
+                              const char          *url,
+                              time_t               mtime)
 {
   SaveSnapshotAsyncData *data;
 
   data = g_slice_new0 (SaveSnapshotAsyncData);
+  data->service = g_object_ref (service);
   data->snapshot = g_object_ref (snapshot);
   data->url = g_strdup (url);
   data->mtime = mtime;
+  data->refcount = 1;
 
   return data;
 }
 
+static SaveSnapshotAsyncData *
+save_snapshot_async_data_ref (SaveSnapshotAsyncData *data)
+{
+  g_atomic_int_add (&data->refcount, 1);
+  return data;
+}
+
 static void
-save_snapshot_async_data_free (SaveSnapshotAsyncData *data)
+save_snapshot_async_data_unref (SaveSnapshotAsyncData *data)
 {
-  g_object_unref (data->snapshot);
-  g_free (data->url);
+  if (g_atomic_int_dec_and_test (&data->refcount)) {
+    g_object_unref (data->service);
+    g_object_unref (data->snapshot);
+    g_free (data->url);
+    g_slice_free (SaveSnapshotAsyncData, data);
+  }
+}
+
+static gboolean
+idle_emit_snapshot_saved (gpointer user_data)
+{
+  SaveSnapshotAsyncData *data = (SaveSnapshotAsyncData *)user_data;
+
+  g_signal_emit (data->service, signals[SNAPSHOT_SAVED], 0, data->url, data->mtime);
 
-  g_slice_free (SaveSnapshotAsyncData, data);
+  save_snapshot_async_data_unref (data);
+  return G_SOURCE_REMOVE;
 }
 
 static void
@@ -697,9 +747,9 @@ save_snapshot_thread (GTask                 *task,
                                                   data->snapshot,
                                                   data->url,
                                                   data->mtime);
+  g_idle_add (idle_emit_snapshot_saved, save_snapshot_async_data_ref (data));
 
   path = gnome_desktop_thumbnail_path_for_uri (data->url, GNOME_DESKTOP_THUMBNAIL_SIZE_LARGE);
-
   cache_snapshot_data_in_idle (service, data->url, path, SNAPSHOT_FRESH);
 
   g_task_return_pointer (task, path, g_free);
@@ -723,8 +773,8 @@ ephy_snapshot_service_save_snapshot_async (EphySnapshotService *service,
   task = g_task_new (service, cancellable, callback, user_data);
   g_task_set_priority (task, G_PRIORITY_LOW);
   g_task_set_task_data (task,
-                        save_snapshot_async_data_new (snapshot, url, mtime),
-                        (GDestroyNotify)save_snapshot_async_data_free);
+                        save_snapshot_async_data_new (service, snapshot, url, mtime),
+                        (GDestroyNotify)save_snapshot_async_data_unref);
   g_task_run_in_thread (task, (GTaskThreadFunc)save_snapshot_thread);
   g_object_unref (task);
 }


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