Add svg updater extension (#2252)

* add updater extension
* update legacy underlay_fill_angle: comma to space

1 files changed, 39 insertions, 0 deletions

diff --git a/lib/extensions/update_svg.py b/lib/extensions/update_svg.py
new file mode 100644
index 00000000..51960cb2
--- /dev/null
+++ b/lib/extensions/update_svg.py
@@ -0,0 +1,39 @@
+# Authors: see git history
+#
+# Copyright (c) 2010 Authors
+# Licensed under the GNU GPL version 3.0 or later.  See the file LICENSE for details.
+
+from inkex import errormsg
+
+from ..i18n import _
+from ..update import update_inkstitch_document
+from .base import InkstitchExtension
+
+
+class UpdateSvg(InkstitchExtension):
+
+    def __init__(self, *args, **kwargs):
+        InkstitchExtension.__init__(self, *args, **kwargs)
+        # TODO: When there are more legacy versions than only one, this can be transformed in a user input
+        # inkstitch_svg_version history: 1 -> v2.3.0
+        self.update_from = 0
+
+    def effect(self):
+        if not self.svg.selection:
+            errormsg(_('Please select at least one element to update. '
+                       'This extension is designed to help you update copy and pasted elements from old designs.'))
+
+        # set the file version to the update_from value, so that the updater knows where to start from
+        # the updater will then reset it to the current version after the update has finished
+        metadata = self.get_inkstitch_metadata()
+        metadata['inkstitch_svg_version'] = self.update_from
+
+        update_inkstitch_document(self.document, self.get_selection())
+
+    def get_selection(self):
+        selection = []
+        for element in self.svg.selection:
+            selection.append(element)
+            for descendant in element.iterdescendants():
+                selection.append(descendant)
+        return selection