author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Fri, 19 Feb 2010 09:34:14 +0100 | |
branch | stable |
changeset 4643 | 921737d2e3a8 |
parent 4494 | ccb7fce7297b |
child 5421 | 8167de96c523 |
permissions | -rw-r--r-- |
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"""Views, forms, actions... for the CubicWeb web client |
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:organization: Logilab |
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update copyright: welcome 2010
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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big bunch of copyright / docstring update
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses |
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""" |
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__docformat__ = "restructuredtext en" |
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import os |
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import sys |
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import tempfile |
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from rql import nodes |
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def need_table_view(rset, schema): |
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"""return True if we think that a table view is more appropriate than a |
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list or primary view to display the given result set |
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""" |
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rqlst = rset.syntax_tree() |
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if len(rqlst.children) > 1: |
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# UNION query, use a table |
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return True |
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selected = rqlst.children[0].selection |
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try: |
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mainvar = selected[0] |
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except AttributeError: |
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# not a variable ref, using table view is probably a good option |
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return True |
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if not (isinstance(mainvar, nodes.VariableRef) or |
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(isinstance(mainvar, nodes.Constant) and mainvar.uid)): |
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return True |
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for i, etype in enumerate(rset.description[0][1:]): |
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# etype may be None on outer join |
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if etype is None: |
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return True |
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# check the selected index node is a VariableRef (else we |
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# won't detect aggregate function |
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if not isinstance(selected[i+1], nodes.VariableRef): |
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return True |
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# if this is not a final entity |
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if not schema.eschema(etype).final: |
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return True |
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# if this is a final entity not linked to the main variable |
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var = selected[i+1].variable |
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for vref in var.references(): |
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rel = vref.relation() |
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if rel is None: |
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continue |
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if mainvar.is_equivalent(rel.children[0]): |
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break |
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else: |
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return True |
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return False |
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# FIXME: VID_BY_MIMETYPE is unfortunately a bit too naive since |
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# some browsers (e.g. FF2) send a bunch of mimetypes in |
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[views] comment the naive content-negotiation algorithm, it breaks FF2 navigation
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# the Accept header, for instance: |
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# text/xml,application/xml,application/xhtml+xml,text/html;q=0.9, |
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# text/plain;q=0.8,image/png,*/*;q=0.5 |
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VID_BY_MIMETYPE = { |
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#'text/xml': 'xml', |
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# XXX rss, owl... |
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} |
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def vid_from_rset(req, rset, schema): |
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"""given a result set, return a view id""" |
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if rset is None: |
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return 'index' |
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for mimetype in req.parse_accept_header('Accept'): |
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if mimetype in VID_BY_MIMETYPE: |
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return VID_BY_MIMETYPE[mimetype] |
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nb_rows = len(rset) |
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# empty resultset |
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if nb_rows == 0 : |
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return 'noresult' |
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# entity result set |
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parents:
3145
diff
changeset
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if not schema.eschema(rset.description[0][0]).final: |
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if need_table_view(rset, schema): |
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return 'table' |
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if nb_rows == 1: |
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if req.search_state[0] == 'normal': |
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return 'primary' |
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return 'outofcontext-search' |
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if len(rset.column_types(0)) == 1: |
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return 'sameetypelist' |
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return 'list' |
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return 'table' |
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def linksearch_select_url(req, rset): |
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"""when searching an entity to create a relation, return an url to select |
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entities in the given rset |
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""" |
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req.add_js( ('cubicweb.ajax.js', 'cubicweb.edition.js') ) |
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target, eid, r_type, searchedtype = req.search_state[1] |
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if target == 'subject': |
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id_fmt = '%s:%s:%%s' % (eid, r_type) |
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else: |
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id_fmt = '%%s:%s:%s' % (r_type, eid) |
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triplets = '-'.join(id_fmt % row[0] for row in rset.rows) |
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return "javascript: selectForAssociation('%s', '%s');" % (triplets, eid) |
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class TmpFileViewMixin(object): |
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binary = True |
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content_type = 'application/octet-stream' |
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cache_max_age = 60*60*2 # stay in http cache for 2 hours by default |
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def call(self): |
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self.cell_call() |
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def cell_call(self, row=0, col=0): |
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self.cw_row, self.cw_col = row, col # in case one needs it |
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fd, tmpfile = tempfile.mkstemp('.png') |
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os.close(fd) |
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self._generate(tmpfile) |
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self.w(open(tmpfile, 'rb').read()) |
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os.unlink(tmpfile) |