[gimp] Add more precondition checks to vectors import functions

[Michael Natterer <mitch src gnome org>]

commit ae6828c1cc3aa38a1cb5d1954c736f62d6a8d24d
Author: Michael Natterer <mitch gimp org>
Date:   Mon Aug 10 13:28:14 2009 +0200

    Add more precondition checks to vectors import functions
    
    (gimp_vectors_import_file)
    (gimp_vectors_import_buffer): check the parent item the same
    way gimp_image_add_vectors() does.

 app/vectors/gimpvectors-import.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/app/vectors/gimpvectors-import.c b/app/vectors/gimpvectors-import.c
index bf0c570..8b305cd 100644
--- a/app/vectors/gimpvectors-import.c
+++ b/app/vectors/gimpvectors-import.c
@@ -209,6 +209,17 @@ gimp_vectors_import_file (GimpImage    *image,
   g_return_val_if_fail (parent == NULL ||
                         parent == GIMP_IMAGE_ACTIVE_PARENT ||
                         GIMP_IS_VECTORS (parent), FALSE);
+  g_return_val_if_fail (parent == NULL ||
+                        parent == GIMP_IMAGE_ACTIVE_PARENT ||
+                        gimp_item_is_attached (GIMP_ITEM (parent)), FALSE);
+  g_return_val_if_fail (parent == NULL ||
+                        parent == GIMP_IMAGE_ACTIVE_PARENT ||
+                        gimp_item_get_image (GIMP_ITEM (parent)) == image,
+                        FALSE);
+  g_return_val_if_fail (parent == NULL ||
+                        parent == GIMP_IMAGE_ACTIVE_PARENT ||
+                        gimp_viewable_get_children (GIMP_VIEWABLE (parent)),
+                        FALSE);
   g_return_val_if_fail (ret_vectors == NULL || *ret_vectors == NULL, FALSE);
   g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
 
@@ -246,6 +257,17 @@ gimp_vectors_import_buffer (GimpImage    *image,
   g_return_val_if_fail (parent == NULL ||
                         parent == GIMP_IMAGE_ACTIVE_PARENT ||
                         GIMP_IS_VECTORS (parent), FALSE);
+  g_return_val_if_fail (parent == NULL ||
+                        parent == GIMP_IMAGE_ACTIVE_PARENT ||
+                        gimp_item_is_attached (GIMP_ITEM (parent)), FALSE);
+  g_return_val_if_fail (parent == NULL ||
+                        parent == GIMP_IMAGE_ACTIVE_PARENT ||
+                        gimp_item_get_image (GIMP_ITEM (parent)) == image,
+                        FALSE);
+  g_return_val_if_fail (parent == NULL ||
+                        parent == GIMP_IMAGE_ACTIVE_PARENT ||
+                        gimp_viewable_get_children (GIMP_VIEWABLE (parent)),
+                        FALSE);
   g_return_val_if_fail (ret_vectors == NULL || *ret_vectors == NULL, FALSE);
   g_return_val_if_fail (error == NULL || *error == NULL, FALSE);