def _process_filter_request(self, req):
'''
Process filter request.
This method is invoked when RevTree update is done by user.
:param req: Trac request object
'''
session_ctx = SessionContext(req)
# Reset clause
if req.args.get("reset"):
session_ctx.clear()
dump = json.dumps(dict())
# Send response
req.send_response(200)
req.send_header('Content-Type', "application/json")
req.send_header('Content-Length', len(dump))
req.write(dump);
return
for key in ['query_options', 'query_filters']:
if key not in req.args:
continue
return self._process_query_filters_options(req,
key,
req.args[key])
# Repository object
repos = Repository(self.env)
if self.abstime:
timebase = int(time.time())
else:
youngest = repos.get_youngest_rev()
timebase = to_timestamp(repos.get_changeset(youngest).date)
# Style options
style = req.args.get('style', 'compact')
try:
# Generate query
query = QueryFilter(self.env,
repos,
req.args)
# Update session context information
session_ctx['query'] = query.export()
session_ctx['style'] = style
svgbranches, revisions, filtered_revisions = \
self._process_query(repos,
query,
timebase)
if (not svgbranches) or (not revisions):
raise EmptyRangeError('')
repos = Repository(self.env)
# MANDATORY: revisions must be sorted in reversed order
revisions.sort(reverse=True, key=lambda t: t[0])
# SVG revision tree object
svgrevtree = self.rt.get_revtree(repos, req)
svgrevtree.create(req,
svgbranches,
revisions,
filtered_revisions,
style)
svgrevtree.build()
except EmptyRangeError as excpt:
msg = _('Selected filters cannot '
'render a revision tree. %s' % excpt.message.encode('utf8'))
msg = msg.encode('UTF-8')
req.send_response(404)
req.send_header('Content-Type', "text/html; charset=utf-8'")
req.send_header('Content-Length', len(msg))
req.write(msg)
else:
data = dict(revisions=self._get_ui_revisions(),
authors=self._get_ui_authors(),
# branches=self._get_ui_branches(reverse=False),
fontsize=self.env.config.get('revtree',
'fontsize',
'14pt'),
fontfamily=self.env.config.get('revtree',
'fontname',
'arial'),
tree=dict(brc=svgrevtree.export(),
max_rev=svgrevtree.max_rev),
url=req.href(),
style=style)
dump = json.dumps(data)
# Send response
req.send_response(200)
req.send_header('Content-Type', "application/json")
req.send_header('Content-Length', len(dump))
req.write(dump)
