[gnome-software/1166-repository-dialog-design-updates: 36/39] gs-plugin: Introduce gs_plugin_get_action_supported()

[Milan Crha <mcrha src gnome org>]

commit 52afb1e192cf6d66b44d18fe37e80e2e75deed02
Author: Milan Crha <mcrha redhat com>
Date:   Wed Jul 21 08:00:27 2021 +0200

    gs-plugin: Introduce gs_plugin_get_action_supported()
    
    Helps to check whether certain plugin supports certain action, which
    can be used to enable/disable certain features in the GUI or similar
    places.

 lib/gs-plugin.c | 26 ++++++++++++++++++++++++++
 lib/gs-plugin.h |  2 ++
 2 files changed, 28 insertions(+)
---
diff --git a/lib/gs-plugin.c b/lib/gs-plugin.c
index 47e1ec7d5..186bf3159 100644
--- a/lib/gs-plugin.c
+++ b/lib/gs-plugin.c
@@ -2143,3 +2143,29 @@ gs_plugin_update_cache_state_for_repository (GsPlugin *plugin,
                }
        }
 }
+
+/**
+ * gs_plugin_get_action_supported:
+ * @plugin: a #GsPlugin
+ * @action: a #GsPluginAction
+ *
+ * Checks whether the @plugin supports @action, meaning whether
+ * the @plugin can execute the @action.
+ *
+ * Returns: Whether the @plugin supports the @action
+ *
+ * Since: 41
+ **/
+gboolean
+gs_plugin_get_action_supported (GsPlugin *plugin,
+                               GsPluginAction action)
+{
+       const gchar *function_name;
+
+       g_return_val_if_fail (GS_IS_PLUGIN (plugin), FALSE);
+
+       function_name = gs_plugin_action_to_function_name (action);
+       g_return_val_if_fail (function_name != NULL, FALSE);
+
+       return gs_plugin_get_symbol (plugin, function_name) != NULL;
+}
diff --git a/lib/gs-plugin.h b/lib/gs-plugin.h
index 91a65488a..fbd64ee27 100644
--- a/lib/gs-plugin.h
+++ b/lib/gs-plugin.h
@@ -136,5 +136,7 @@ void                gs_plugin_repository_changed            (GsPlugin       *plugin,
 void           gs_plugin_update_cache_state_for_repository
                                                        (GsPlugin *plugin,
                                                         GsApp *repository);
+gboolean       gs_plugin_get_action_supported          (GsPlugin       *plugin,
+                                                        GsPluginAction  action);
 
 G_END_DECLS