2 files changed, 22 insertions, 5 deletions
diff --git a/src/extension/implementation/script.cpp b/src/extension/implementation/script.cpp
index 0f0a79bfb..260204cb0 100644
--- a/src/extension/implementation/script.cpp
+++ b/src/extension/implementation/script.cpp
@@ -28,6 +28,7 @@
 #include "desktop.h"
 #include "ui/dialog-events.h"
 #include "extension/effect.h"
+#include "extension/execution-env.h"
 #include "extension/output.h"
 #include "extension/input.h"
 #include "extension/db.h"
@@ -145,9 +146,10 @@ std::string Script::resolveInterpreterExecutable(const Glib::ustring &interpName
    officially in the load function.  This allows for less allocation
    of memory in the unloaded state.
 */
-Script::Script() :
-    Implementation(),
-    _canceled(false)
+Script::Script()
+    : Implementation()
+    , _canceled(false)
+    , parent_window(NULL)
 {
 }
 
@@ -652,6 +654,8 @@ void Script::effect(Inkscape::Extension::Effect *module,
     std::list<std::string> params;
     module->paramListString(params);
 
+    parent_window = module->get_execution_env()->get_working_dialog();
+
     if (module->no_doc) {
         // this is a no-doc extension, e.g. a Help menu command;
         // just run the command without any files, ignoring errors
@@ -741,7 +745,7 @@ void Script::effect(Inkscape::Extension::Effect *module,
             Gtk::MessageDialog warning(
                     _("The output from the extension could not be parsed."),
                     false, Gtk::MESSAGE_WARNING, Gtk::BUTTONS_OK, true);
-            warning.set_transient_for( *(INKSCAPE.active_desktop()->getToplevel()) );
+            warning.set_transient_for( parent_window ? *parent_window : *(INKSCAPE.active_desktop()->getToplevel()) );
             warning.run();
         }
     } // data_read
@@ -932,7 +936,11 @@ void Script::checkStderr (const Glib::ustring &data,
     Gtk::MessageDialog warning(message, false, type, Gtk::BUTTONS_OK, true);
     warning.set_resizable(true);
     GtkWidget *dlg = GTK_WIDGET(warning.gobj());
-    sp_transientize(dlg);
+    if (parent_window) {
+        warning.set_transient_for(*parent_window);
+    } else {
+        sp_transientize(dlg);
+    }
 
     auto vbox = warning.get_content_area();
 
diff --git a/src/extension/implementation/script.h b/src/extension/implementation/script.h
index 684719895..c6ae117c7 100644
--- a/src/extension/implementation/script.h
+++ b/src/extension/implementation/script.h
@@ -15,6 +15,7 @@
 
 #include "implementation.h"
 #include <gtkmm/enums.h>
+#include <gtkmm/window.h>
 #include <glibmm/main.h>
 #include <glibmm/spawn.h>
 #include <glibmm/fileutils.h>
@@ -66,6 +67,14 @@ private:
       */
     Glib::ustring helper_extension;
 
+     /**
+      * The window which should be considered as "parent window" of the script execution,
+      * e.g. when showin warning messages
+      *
+      * If set to NULL the main window of the currently active document is used.
+      */
+    Gtk::Window *parent_window;
+
     std::string solve_reldir(Inkscape::XML::Node *repr_in);
     bool check_existence (std::string const& command);
     void copy_doc(Inkscape::XML::Node * olddoc, Inkscape::XML::Node * newdoc);