added option "keep selected" to longest cont. path extension

extensions/fablabchemnitz/longest_continuous_paths.inx

@@ -8,7 +8,8 @@
       <option value="1">Allow some</option>
       <option value="2">Allow none</option>
    </param>
-   <param name="enableLog" type="bool" gui-text="Debug">false</param>
+   <param name="enableLog" type="bool" gui-text="Show debug log">false</param>
+	<param name="keepSelected" type="bool" gui-text="Keep selected elements">false</param>
    <effect>
       <object-type>path</object-type>
       <effects-menu>

extensions/fablabchemnitz/longest_continuous_paths.py

@@ -168,6 +168,7 @@ class OptimizePaths(inkex.GenerateExtension):
         self.arg_parser.add_argument("-t", "--tolerance", type=float, default=0.1, help="the distance below which 2 nodes will be merged")
         self.arg_parser.add_argument("-l", "--enableLog", type=inkex.Boolean, default=False, help="Enable logging")
         self.arg_parser.add_argument("-o", "--overwriteRule", type=int, default=1, help="Options to control edge overwrite rules")
+        self.arg_parser.add_argument("-k", "--keepSelected", type=inkex.Boolean, default=False, help="Keep selected elements")
 
     def parseSVG(self):
         vertices = []
@@ -195,6 +196,12 @@ class OptimizePaths(inkex.GenerateExtension):
             else:
                 self.log("This extension only works with paths and currently doesn't support groups")
 
+            if self.options.keepSelected is False:
+                for object in objects:
+                    if object.getparent() is not None:
+                        #inkex.utils.debug(object.get('id'))
+                        object.getparent().remove(object)
+
         return (vertices, edges)
 
     # Also computes edge weight