[gnome-software/wip/william/request-refresh: 1/2] Add a needs-refresh query function for plugins

[William Hua <williamhua src gnome org>]

commit 3cc31893acdcec3e3bc0ab2ecc8bdc115b900325
Author: William Hua <william hua canonical com>
Date:   Sat May 7 12:50:17 2016 -0400

    Add a needs-refresh query function for plugins

 src/gs-plugin-loader.c |   59 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/gs-plugin-loader.h |    2 +
 src/gs-plugin.h        |    2 +
 3 files changed, 63 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-plugin-loader.c b/src/gs-plugin-loader.c
index 7b8f2c2..91c78aa 100644
--- a/src/gs-plugin-loader.c
+++ b/src/gs-plugin-loader.c
@@ -117,6 +117,8 @@ typedef gboolean     (*GsPluginUpdateFunc)          (GsPlugin       *plugin,
                                                         GError         **error);
 typedef void            (*GsPluginAdoptAppFunc)        (GsPlugin       *plugin,
                                                         GsApp          *app);
+typedef gboolean        (*GsPluginNeedsRefreshFunc)    (GsPlugin       *plugin,
+                                                        GsPluginRefreshFlags *out_flags);
 
 /* async state */
 typedef struct {
@@ -3789,6 +3791,63 @@ gs_plugin_loader_refresh_finish (GsPluginLoader *plugin_loader,
        return g_task_propagate_boolean (G_TASK (res), error);
 }
 
+/**
+ * gs_plugin_loader_needs_refresh:
+ * @plugin_loader: a #GsPluginLoader
+ * @out_flags: (out) (optional): the type of refresh needed
+ *
+ * Returns: %TRUE if any plugin is requesting a refresh
+ */
+gboolean
+gs_plugin_loader_needs_refresh (GsPluginLoader *plugin_loader,
+                               GsPluginRefreshFlags *out_flags)
+{
+       GsPluginLoaderPrivate *priv = gs_plugin_loader_get_instance_private (plugin_loader);
+       GsPlugin *plugin;
+       GsPluginNeedsRefreshFunc plugin_func = NULL;
+       const gchar *function_name = "gs_plugin_needs_refresh";
+       gboolean needs_refresh = FALSE;
+       GsPluginRefreshFlags all_flags = GS_PLUGIN_REFRESH_FLAGS_NONE;
+       GsPluginRefreshFlags flags;
+       gboolean exists;
+       gboolean ret;
+       guint i;
+
+       g_return_val_if_fail (GS_IS_PLUGIN_LOADER (plugin_loader), FALSE);
+
+       /* run each plugin */
+       for (i = 0; i < priv->plugins->len; i++) {
+               g_autoptr(AsProfileTask) ptask = NULL;
+
+               plugin = g_ptr_array_index (priv->plugins, i);
+               if (!gs_plugin_get_enabled (plugin))
+                       continue;
+
+               exists = g_module_symbol (gs_plugin_get_module (plugin),
+                                         function_name,
+                                         (gpointer *) &plugin_func);
+               if (!exists)
+                       continue;
+               ptask = as_profile_start (priv->profile,
+                                         "GsPlugin::%s(%s)",
+                                         gs_plugin_get_name (plugin),
+                                         function_name);
+               gs_plugin_loader_action_start (plugin_loader, plugin, TRUE);
+               flags = GS_PLUGIN_REFRESH_FLAGS_NONE;
+               ret = plugin_func (plugin, &flags);
+               gs_plugin_loader_action_stop (plugin_loader, plugin);
+               if (ret) {
+                       needs_refresh = TRUE;
+                       all_flags |= flags;
+               }
+       }
+
+       if (out_flags != NULL)
+               *out_flags = all_flags;
+
+       return needs_refresh;
+}
+
 /******************************************************************************/
 
 /**
diff --git a/src/gs-plugin-loader.h b/src/gs-plugin-loader.h
index 7f656bd..ea4801b 100644
--- a/src/gs-plugin-loader.h
+++ b/src/gs-plugin-loader.h
@@ -240,6 +240,8 @@ void                 gs_plugin_loader_set_network_status    (GsPluginLoader 
*plugin_loader,
                                                         gboolean        online);
 gboolean        gs_plugin_loader_get_plugin_supported  (GsPluginLoader *plugin_loader,
                                                         const gchar    *plugin_func);
+gboolean        gs_plugin_loader_needs_refresh         (GsPluginLoader *plugin_loader,
+                                                        GsPluginRefreshFlags *out_flags);
 
 G_END_DECLS
 
diff --git a/src/gs-plugin.h b/src/gs-plugin.h
index e48a9af..0c17a3f 100644
--- a/src/gs-plugin.h
+++ b/src/gs-plugin.h
@@ -338,6 +338,8 @@ gboolean     gs_plugin_update                       (GsPlugin       *plugin,
                                                         GList          *apps,
                                                         GCancellable   *cancellable,
                                                         GError         **error);
+gboolean        gs_plugin_needs_refresh                (GsPlugin       *plugin,
+                                                        GsPluginRefreshFlags *out_flags);
 
 G_END_DECLS