def update_tagrefs(self, mode='purge'):
"""Check tagrefs for deleted objects."""
defs = get_defs(self.document.getroot())
inkscape_tagrefs = self.get_tagrefs(defs)
if len(inkscape_tagrefs):
for tagref in inkscape_tagrefs:
href = tagref.get(inkex.addNS('href', 'xlink'))[1:]
if self.getElementById(href) is None:
if mode == 'purge':
tagref.getparent().remove(tagref)
elif mode == 'placeholder':
temp = inkex.etree.Element(inkex.addNS('path', 'svg'))
temp.set('id', href)
temp.set('d', 'M 0,0 Z')
self.document.getroot().append(temp)
def get_defs(node):
"""Find <defs> in children of *node*, return first one found."""
path = '/svg:svg//svg:defs'
try:
return node.xpath(path, namespaces=inkex.NSS)[0]
except IndexError:
return inkex.etree.SubElement(node, inkex.addNS('defs', 'svg'))
def has_path_effect(node):
"""Check node for Inkscape path-effect attribute."""
return inkex.addNS('path-effect', 'inkscape') in node.attrib
def is_custom_shape(node):
"""Check node for Inkscape custom shape type."""
return inkex.addNS('type', 'sodipodi') in node.attrib
def is_basic_shape(node):
"""Check node for SVG basic shape tag."""
return node.tag in (inkex.addNS(tag, 'svg') for tag in SVG_SHAPES)
def is_path(node):
"""Check node for path tag."""
return node.tag == inkex.addNS('path', 'svg')
def is_group(node):
"""Check node for group tag."""
return node.tag == inkex.addNS('g', 'svg')
def is_text(node):
"""Check node for text tag."""
return node.tag == inkex.addNS('text', 'svg')
def is_image(node):
"""Check node for image tag."""
return node.tag == inkex.addNS('image', 'svg')