[gimp] app: get rid of one more usage of get_active_item() abstract method.

[Jehan <jehanp src gnome org>]

commit 0508148580badb617c6b414089c38180a830baf0
Author: Jehan <jehan girinstud io>
Date:   Wed Oct 12 22:37:14 2022 +0200

    app: get rid of one more usage of get_active_item() abstract method.

 app/actions/plug-in-commands.c   |  8 +++----
 app/actions/procedure-commands.c | 46 ++++++++++++++++++++++++++++++++--------
 app/actions/procedure-commands.h |  4 ++--
 3 files changed, 43 insertions(+), 15 deletions(-)
---
diff --git a/app/actions/plug-in-commands.c b/app/actions/plug-in-commands.c
index edba3a9328..7ce5482c4e 100644
--- a/app/actions/plug-in-commands.c
+++ b/app/actions/plug-in-commands.c
@@ -119,16 +119,16 @@ plug_in_run_cmd_callback (GimpAction *action,
         {
           GimpItemTreeView *view = GIMP_ITEM_TREE_VIEW (data);
           GimpImage        *image;
-          GimpItem         *item;
+          GList            *items;
 
           image = gimp_item_tree_view_get_image (view);
 
           if (image)
-            item = GIMP_ITEM_TREE_VIEW_GET_CLASS (view)->get_active_item (image);
+            items = GIMP_ITEM_TREE_VIEW_GET_CLASS (view)->get_selected_items (image);
           else
-            item = NULL;
+            items = NULL;
 
-          args = procedure_commands_get_item_args (procedure, image, item);
+          args = procedure_commands_get_items_args (procedure, image, items);
         }
       else
         {
diff --git a/app/actions/procedure-commands.c b/app/actions/procedure-commands.c
index 16974493e9..9cb01fe797 100644
--- a/app/actions/procedure-commands.c
+++ b/app/actions/procedure-commands.c
@@ -149,9 +149,9 @@ procedure_commands_get_image_args (GimpProcedure   *procedure,
 }
 
 GimpValueArray *
-procedure_commands_get_item_args (GimpProcedure *procedure,
-                                  GimpImage     *image,
-                                  GimpItem      *item)
+procedure_commands_get_items_args (GimpProcedure *procedure,
+                                   GimpImage     *image,
+                                   GList         *items_list)
 {
   GimpValueArray *args;
   gint            n_args = 0;
@@ -178,21 +178,49 @@ procedure_commands_get_item_args (GimpProcedure *procedure,
           if (gimp_value_array_length (args) > n_args &&
               GIMP_IS_PARAM_SPEC_ITEM (procedure->args[n_args]))
             {
-              if (item &&
-                  g_type_is_a (G_TYPE_FROM_INSTANCE (item),
-                               G_PARAM_SPEC_VALUE_TYPE (procedure->args[n_args])))
+              if (items_list)
                 {
+                  g_printerr ("%s: plug-in procedures expecting a single item are deprecated!\n",
+                              G_STRFUNC);
                   g_value_set_object (gimp_value_array_index (args, n_args),
-                                      item);
+                                      items_list->data);
                   n_args++;
                 }
               else
                 {
-                  g_warning ("Uh-oh, no active item for the plug-in!");
+                  g_warning ("Uh-oh, no selected items for the plug-in!");
                   gimp_value_array_unref (args);
                   return NULL;
                 }
             }
+          else if (gimp_value_array_length (args) > n_args + 1        &&
+                   G_IS_PARAM_SPEC_INT (procedure->args[n_args])      &&
+                   GIMP_IS_PARAM_SPEC_OBJECT_ARRAY (procedure->args[n_args + 1]))
+            {
+              GimpItem **items   = NULL;
+              gint       n_items;
+
+              n_items = g_list_length (items_list);
+
+              g_value_set_int (gimp_value_array_index (args, n_args++),
+                               n_items);
+
+              if (items_list)
+                {
+                  GList *iter;
+                  gint   i;
+
+                  items = g_new (GimpItem *, n_items);
+                  for (iter = items_list, i = 0; iter; iter = iter->next, i++)
+                    items[i] = iter->data;
+                }
+
+              gimp_value_set_object_array (gimp_value_array_index (args, n_args++),
+                                           GIMP_TYPE_ITEM,
+                                           (GObject **) items, n_items);
+
+              g_free (items);
+            }
         }
     }
 
@@ -262,7 +290,7 @@ procedure_commands_get_display_args (GimpProcedure *procedure,
                 }
               else
                 {
-                  g_warning ("Uh-oh, no active drawable for the plug-in!");
+                  g_warning ("Uh-oh, no selected drawables for the plug-in!");
 
                   gimp_value_array_unref (args);
                   g_list_free (drawables_list);
diff --git a/app/actions/procedure-commands.h b/app/actions/procedure-commands.h
index 13c1109a32..f05dd1aff2 100644
--- a/app/actions/procedure-commands.h
+++ b/app/actions/procedure-commands.h
@@ -24,9 +24,9 @@ GimpValueArray * procedure_commands_get_data_args    (GimpProcedure  *procedure,
                                                       GimpObject     *object);
 GimpValueArray * procedure_commands_get_image_args   (GimpProcedure  *procedure,
                                                       GimpImage      *image);
-GimpValueArray * procedure_commands_get_item_args    (GimpProcedure  *procedure,
+GimpValueArray * procedure_commands_get_items_args   (GimpProcedure  *procedure,
                                                       GimpImage      *image,
-                                                      GimpItem       *item);
+                                                      GList          *items);
 GimpValueArray * procedure_commands_get_display_args (GimpProcedure  *procedure,
                                                       GimpDisplay    *display,
                                                       GimpObject     *settings);