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from inkex import NSS, etree
from ..utils import cache
@cache
def get_document(node):
return node.getroottree().getroot()
def generate_unique_id(document_or_element, prefix="path"):
if isinstance(document_or_element, etree._ElementTree):
document = document_or_element.getroot()
else:
document = get_document(document_or_element)
doc_ids = {node.get('id') for node in document.iterdescendants() if 'id' in node.attrib}
i = 1
while True:
new_id = "%s%d" % (prefix, i)
if new_id not in doc_ids:
break
i += 1
return new_id
def find_elements(node, xpath):
document = get_document(node)
elements = document.xpath(xpath, namespaces=NSS)
return elements
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