added set_css_class extension

extensions/fablabchemnitz/box_maker_t_slot/box_maker_t_slot.inx

@@ -34,7 +34,9 @@
     <effect>
         <object-type>all</object-type>
         <effects-menu>
-            <submenu name="Laser Tools" />
+            <submenu name="FabLab Chemnitz">
+                <submenu name="Finger-jointed/Tabbed Boxes"/>
+            </submenu>
         </effects-menu>
     </effect>
     <script>

extensions/fablabchemnitz/set_css_class/meta.json

@@ -0,0 +1,20 @@
+[
+  {
+    "name": "Set CSS Class On Elements",
+    "id": "fablabchemnitz.de.set_css_class",
+    "path": "set_css_class",
+    "original_name": "Set CSS class on elements",
+    "original_id": "org.inkscape.stylesheet.set",
+    "license": "GNU GPL",
+    "license_url": "https://github.com/monomon/inkscape-set-css-class/blob/master/set_css_class.py",
+    "comment": "",
+    "source_url": "https://gitea.fablabchemnitz.de/FabLab_Chemnitz/mightyscape-1.X/src/branch/master/extensions/fablabchemnitz/set_css_class",
+    "fork_url": "https://github.com/monomon/inkscape-set-css-class",
+    "documentation_url": "https://stadtfabrikanten.org/display/IFM/Set+CSS+Class+On+Elements",
+    "inkscape_gallery_url": null,
+    "main_authors": [
+      "github.com/monomon",
+      "github.com/vmario89"
+    ]
+  }
+]

extensions/fablabchemnitz/set_css_class/set_css_class.inx

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+    <name>Set CSS Class On Elements</name>
+    <id>fablabchemnitz.de.set_css_class</id>
+    <label>Set a CSS class on the selected elements. Their current inline styles will be removed.</label>
+    <param name="name" type="string" gui-text="CSS class name:">class1</param>
+    <param name="clear_styles" type="bool" gui-text="clear inline styling">true</param>
+    <effect needs-live-preview="false">
+        <object-type>all</object-type>
+        <effects-menu>
+         <submenu name="FabLab Chemnitz">
+            <submenu name="Various"/>
+         </submenu>
+        </effects-menu>
+    </effect>
+    <script>
+        <command location="inx" interpreter="python">set_css_class.py</command>
+    </script>
+</inkscape-extension>

extensions/fablabchemnitz/set_css_class/set_css_class.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+"""
+Sets a css class on selected elements, while optionally removing the elements' styling.
+If inline styles are not removed, the css class might not have effect.
+
+Inspired by MergeStyles (and best used together with it).
+"""
+
+__author__ = "Mois Moshev"
+__email__ = "mois@monomon.me"
+__copyright__ = "Copyright (C) 2017 Mois Moshev"
+__license__ = "GPL"
+
+import inkex
+import sys
+
+class SetCSSClass(inkex.EffectExtension):
+    
+    def add_arguments(self, pars):
+        pars.add_argument("--name", help="Name of css class to apply")
+        pars.add_argument("--clear_styles", type=inkex.Boolean, default=True, help="Name of css class to apply")
+
+    def effect(self):
+        newclass = self.options.name
+        elements = self.svg.selected.values()
+
+        for el in elements:
+            current_classes = el.attrib.has_key("class") and el.attrib["class"].split() or []
+
+            if newclass not in current_classes:
+                current_classes.append(newclass)
+
+            if self.options.clear_styles:
+                el.attrib["style"] = ""
+
+            el.attrib["class"] = " ".join(current_classes)
+
+if __name__ == "__main__":
+    SetCSSClass().run()