[gnome-software] Delay the updates-changed notification for a few seconds

[Richard Hughes <rhughes src gnome org>]

commit 420908bab1d3112c1ec2480a92b0205f69e4f63c
Author: Richard Hughes <richard hughsie com>
Date:   Thu Dec 11 16:43:15 2014 +0000

    Delay the updates-changed notification for a few seconds
    
    This allows us to continue with the current multi-stage task without ripping
    down and refreshing all the existing GsApp's.

 src/gs-plugin-loader.c |   29 ++++++++++++++++++++++++++---
 1 files changed, 26 insertions(+), 3 deletions(-)
---
diff --git a/src/gs-plugin-loader.c b/src/gs-plugin-loader.c
index d66fc04..dfc4a06 100644
--- a/src/gs-plugin-loader.c
+++ b/src/gs-plugin-loader.c
@@ -27,6 +27,8 @@
 #include "gs-plugin.h"
 #include "gs-profile.h"
 
+#define GS_PLUGIN_LOADER_UPDATES_CHANGED_DELAY 3       /* s */
+
 static void    gs_plugin_loader_finalize       (GObject        *object);
 
 struct GsPluginLoaderPrivate
@@ -47,6 +49,7 @@ struct GsPluginLoaderPrivate
        gint                     scale;
 
        GList                   *queued_installs;
+       guint                    updates_changed_id;
        gboolean                 online; 
 };
 
@@ -2549,10 +2552,10 @@ gs_plugin_loader_status_update_cb (GsPlugin *plugin,
 }
 
 /**
- * gs_plugin_loader_updates_changed_cb:
+ * gs_plugin_loader_updates_changed_delay_cb:
  */
-static void
-gs_plugin_loader_updates_changed_cb (GsPlugin *plugin, gpointer user_data)
+static gboolean
+gs_plugin_loader_updates_changed_delay_cb (gpointer user_data)
 {
        GList *apps;
        GList *l;
@@ -2575,6 +2578,23 @@ gs_plugin_loader_updates_changed_cb (GsPlugin *plugin, gpointer user_data)
        /* notify shells */
        g_debug ("updates-changed");
        g_signal_emit (plugin_loader, signals[SIGNAL_UPDATES_CHANGED], 0);
+       plugin_loader->priv->updates_changed_id = 0;
+       return FALSE;
+}
+
+/**
+ * gs_plugin_loader_updates_changed_cb:
+ */
+static void
+gs_plugin_loader_updates_changed_cb (GsPlugin *plugin, gpointer user_data)
+{
+       GsPluginLoader *plugin_loader = GS_PLUGIN_LOADER (user_data);
+       if (plugin_loader->priv->updates_changed_id != 0)
+               return;
+       plugin_loader->priv->updates_changed_id =
+               g_timeout_add_seconds (GS_PLUGIN_LOADER_UPDATES_CHANGED_DELAY,
+                                      gs_plugin_loader_updates_changed_delay_cb,
+                                      plugin_loader);
 }
 
 /**
@@ -2937,6 +2957,9 @@ gs_plugin_loader_finalize (GObject *object)
 
        g_return_if_fail (plugin_loader->priv != NULL);
 
+       if (plugin_loader->priv->updates_changed_id != 0)
+               g_source_remove (plugin_loader->priv->updates_changed_id);
+
        /* application stop */
        gs_profile_stop (plugin_loader->priv->profile, "GsPluginLoader");