[gnome-builder] core: add helper to get IdeContextAddin by module-name

[Christian Hergert <chergert src gnome org>]

commit bc45a7097f6bbdbd403cc9f527b21e4cfcccb8ef
Author: Christian Hergert <chergert redhat com>
Date:   Wed Mar 3 14:49:01 2021 -0800

    core: add helper to get IdeContextAddin by module-name

 src/libide/core/ide-context-addin.h | 31 +++++++++++++++++--------------
 src/libide/core/ide-context.c       | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 14 deletions(-)
---
diff --git a/src/libide/core/ide-context-addin.h b/src/libide/core/ide-context-addin.h
index ea4e3b575..74ebab184 100644
--- a/src/libide/core/ide-context-addin.h
+++ b/src/libide/core/ide-context-addin.h
@@ -50,24 +50,27 @@ struct _IdeContextAddinInterface
                                    IdeContext           *context);
 };
 
+IDE_AVAILABLE_IN_3_40
+IdeContextAddin *ide_context_addin_find_by_module_name (IdeContext  *context,
+                                                        const gchar *module_name);
 IDE_AVAILABLE_IN_3_32
-void     ide_context_addin_load_project_async  (IdeContextAddin      *self,
-                                                IdeContext           *context,
-                                                GCancellable         *cancellable,
-                                                GAsyncReadyCallback   callback,
-                                                gpointer              user_data);
+void             ide_context_addin_load_project_async  (IdeContextAddin      *self,
+                                                        IdeContext           *context,
+                                                        GCancellable         *cancellable,
+                                                        GAsyncReadyCallback   callback,
+                                                        gpointer              user_data);
 IDE_AVAILABLE_IN_3_32
-gboolean ide_context_addin_load_project_finish (IdeContextAddin      *self,
-                                                GAsyncResult         *result,
-                                                GError              **error);
+gboolean         ide_context_addin_load_project_finish (IdeContextAddin      *self,
+                                                        GAsyncResult         *result,
+                                                        GError              **error);
 IDE_AVAILABLE_IN_3_32
-void     ide_context_addin_load                (IdeContextAddin      *self,
-                                                IdeContext           *context);
+void             ide_context_addin_load                (IdeContextAddin      *self,
+                                                        IdeContext           *context);
 IDE_AVAILABLE_IN_3_32
-void     ide_context_addin_unload              (IdeContextAddin      *self,
-                                                IdeContext           *context);
+void             ide_context_addin_unload              (IdeContextAddin      *self,
+                                                        IdeContext           *context);
 IDE_AVAILABLE_IN_3_32
-void     ide_context_addin_project_loaded      (IdeContextAddin      *self,
-                                                IdeContext           *context);
+void             ide_context_addin_project_loaded      (IdeContextAddin      *self,
+                                                        IdeContext           *context);
 
 G_END_DECLS
diff --git a/src/libide/core/ide-context.c b/src/libide/core/ide-context.c
index 108d46f61..ffb3fe0fd 100644
--- a/src/libide/core/ide-context.c
+++ b/src/libide/core/ide-context.c
@@ -863,3 +863,37 @@ _ide_context_set_has_project (IdeContext *self)
   self->project_loaded = TRUE;
   ide_object_unlock (IDE_OBJECT (self));
 }
+
+/**
+ * ide_context_addin_find_by_module_name:
+ * @context: an #IdeContext
+ * @module_name: the name of the addin module
+ *
+ * Finds the addin (if any) matching the plugin's @module_name.
+ *
+ * Returns: (transfer none) (nullable): an #IdeContextAddin or %NULL
+ *
+ * Since: 3.40
+ */
+IdeContextAddin *
+ide_context_addin_find_by_module_name (IdeContext  *context,
+                                       const gchar *module_name)
+{
+  PeasPluginInfo *plugin_info;
+  PeasExtension *ret = NULL;
+  PeasEngine *engine;
+
+  g_return_val_if_fail (IDE_IS_MAIN_THREAD (), NULL);
+  g_return_val_if_fail (IDE_IS_CONTEXT (context), NULL);
+  g_return_val_if_fail (module_name != NULL, NULL);
+
+  if (context->addins == NULL)
+    return NULL;
+
+  engine = peas_engine_get_default ();
+
+  if ((plugin_info = peas_engine_get_plugin_info (engine, module_name)))
+    ret = peas_extension_set_get_extension (context->addins, plugin_info);
+
+  return IDE_CONTEXT_ADDIN (ret);
+}