diff -r 577118ebd179 -r c89fc366bebd svghmi/gen_dnd_widget_svg.ysl2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/svghmi/gen_dnd_widget_svg.ysl2	Thu Sep 02 21:36:29 2021 +0200
@@ -0,0 +1,79 @@
+include yslt_noindent.yml2
+
+in xsl decl svgtmpl(match, xmlns="http://www.w3.org/2000/svg") alias template;
+
+istylesheet
+            /* From Inkscape */
+            xmlns:dc="http://purl.org/dc/elements/1.1/"
+            xmlns:cc="http://creativecommons.org/ns#"
+            xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+            xmlns:svg="http://www.w3.org/2000/svg"
+            xmlns:xlink="http://www.w3.org/1999/xlink"
+            xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+            xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+
+            /* Namespace to invoke python code */
+            xmlns:ns="beremiz"
+
+            extension-element-prefixes="ns func exsl regexp str dyn"
+            exclude-result-prefixes="ns func exsl regexp str dyn" {
+
+    const "hmi_elements", "//svg:*[starts-with(@inkscape:label, 'HMI:')]";
+    const "widgetparams", "ns:GetWidgetParams()";
+
+    const "indexed_hmitree", "/.."; // compatibility with parse_labels.ysl2
+    include parse_labels.ysl2
+    const "_parsed_widgets" apply "$hmi_elements", mode="parselabel";
+    const "parsed_widgets","exsl:node-set($_parsed_widgets)";
+
+    const "svg_widget", "$parsed_widgets/widget[1]";
+    const "svg_widget_type", "$svg_widget/@type";
+    const "svg_widget_path", "$svg_widget/@path";
+    const "svg_widget_count", "count($parsed_widgets/widget)";
+
+    // Templates to change label paths(s)
+    template "@* | node()", mode="replace_params" {
+        xsl:copy apply "@* | node()", mode="replace_params";
+    }
+
+    template "arg", mode="replace_params";
+    template "path", mode="replace_params";
+    template "widget", mode="replace_params" {
+        xsl:copy {
+            apply "@* | node()", mode="replace_params";
+            copy "$widgetparams/*";
+        };
+    }
+
+    // all attribs are usually copied
+    svgtmpl "@*", mode="inline_svg" xsl:copy;
+
+    // except labels, ignored
+    svgtmpl "@inkscape:label[starts-with(., 'HMI:')]", mode="inline_svg";
+
+    template "node()", mode="inline_svg" xsl:copy {
+
+      // in case this node widget's main element inject label
+      if "@id = $svg_widget/@id" {
+          const "substituted_widget" apply "$svg_widget", mode="replace_params";
+          const "substituted_widget_ns", "exsl:node-set($substituted_widget)";
+          const "new_label" apply "$substituted_widget_ns", mode="genlabel";
+          attrib "inkscape:label" > «$new_label»
+      }
+      // all nodes are copied as well
+      apply "@* | node()", mode="inline_svg";
+    }
+
+    template "/" {
+        comment > Widget dropped in Inkscape from Beremiz
+
+        choose {
+            when "$svg_widget_count < 1"
+                error > No widget detected on selected SVG
+            when "$svg_widget_count > 1"
+                error > Multiple widget DnD not yet supported
+        }
+
+        apply "/", mode="inline_svg";
+    }
+}