--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/web/views/__init__.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,148 @@
+# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of CubicWeb.
+#
+# CubicWeb is free software: you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+"""Views, forms, actions... for the CubicWeb web client"""
+
+__docformat__ = "restructuredtext en"
+
+import os
+import sys
+import tempfile
+
+from six import add_metaclass
+
+from rql import nodes
+from logilab.mtconverter import xml_escape
+from logilab.common.deprecation import class_deprecated
+
+
+def need_table_view(rset, schema):
+    """return True if we think that a table view is more appropriate than a
+    list or primary view to display the given result set
+    """
+    rqlst = rset.syntax_tree()
+    if len(rqlst.children) > 1:
+        # UNION query, use a table
+        return True
+    selected = rqlst.children[0].selection
+    try:
+        mainvar = selected[0]
+    except AttributeError:
+        # not a variable ref, using table view is probably a good option
+        return True
+    if not (isinstance(mainvar, nodes.VariableRef) or
+            (isinstance(mainvar, nodes.Constant) and mainvar.uid)):
+        return True
+    for i, etype in enumerate(rset.description[0][1:]):
+        # etype may be None on outer join
+        if etype is None:
+            return True
+        # check the selected index node is a VariableRef (else we
+        # won't detect aggregate function
+        if not isinstance(selected[i+1], nodes.VariableRef):
+            return True
+        # if this is not a final entity
+        if not schema.eschema(etype).final:
+            return True
+        # if this is a final entity not linked to the main variable
+        var = selected[i+1].variable
+        for vref in var.references():
+            rel = vref.relation()
+            if rel is None:
+                continue
+            if mainvar.is_equivalent(rel.children[0]):
+                break
+        else:
+            return True
+    return False
+
+# FIXME: VID_BY_MIMETYPE is unfortunately a bit too naive since
+#        some browsers (e.g. FF2) send a bunch of mimetypes in
+#        the Accept header, for instance:
+#          text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,
+#          text/plain;q=0.8,image/png,*/*;q=0.5
+VID_BY_MIMETYPE = {
+    #'text/xml': 'xml',
+    # XXX rss, owl...
+}
+def vid_from_rset(req, rset, schema, check_table=True):
+    """given a result set, return a view id"""
+    if rset is None:
+        return 'index'
+    for mimetype in req.parse_accept_header('Accept'):
+        if mimetype in VID_BY_MIMETYPE:
+            return VID_BY_MIMETYPE[mimetype]
+    nb_rows = len(rset)
+    # empty resultset
+    if nb_rows == 0:
+        return 'noresult'
+    # entity result set
+    if not schema.eschema(rset.description[0][0]).final:
+        if check_table and need_table_view(rset, schema):
+            return 'table'
+        if nb_rows == 1:
+            if req.search_state[0] == 'normal':
+                return 'primary'
+            return 'outofcontext-search'
+        if len(rset.column_types(0)) == 1:
+            return 'sameetypelist'
+        return 'list'
+    return 'table'
+
+
+def linksearch_select_url(req, rset):
+    """when searching an entity to create a relation, return a URL to select
+    entities in the given rset
+    """
+    req.add_js( ('cubicweb.ajax.js', 'cubicweb.edition.js') )
+    target, eid, r_type, searchedtype = req.search_state[1]
+    if target == 'subject':
+        id_fmt = '%s:%s:%%s' % (eid, r_type)
+    else:
+        id_fmt = '%%s:%s:%s' % (r_type, eid)
+    triplets = '-'.join(id_fmt % row[0] for row in rset.rows)
+    return "javascript: selectForAssociation('%s', '%s');" % (triplets, eid)
+
+
+def add_etype_button(req, etype, csscls='addButton right', **urlkwargs):
+    vreg = req.vreg
+    eschema = vreg.schema.eschema(etype)
+    if eschema.has_perm(req, 'add'):
+        url = vreg['etypes'].etype_class(etype).cw_create_url(req, **urlkwargs)
+        return u'<a href="%s" class="%s">%s</a>' % (
+            xml_escape(url), csscls, req.__('New %s' % etype))
+    return u''
+
+
+
+@add_metaclass(class_deprecated)
+class TmpFileViewMixin(object):
+    __deprecation_warning__ = '[3.18] %(cls)s is deprecated'
+    binary = True
+    content_type = 'application/octet-stream'
+    cache_max_age = 60*60*2 # stay in http cache for 2 hours by default
+
+    def call(self):
+        self.cell_call()
+
+    def cell_call(self, row=0, col=0):
+        self.cw_row, self.cw_col = row, col # in case one needs it
+        fd, tmpfile = tempfile.mkstemp('.png')
+        os.close(fd)
+        self._generate(tmpfile)
+        self.w(open(tmpfile, 'rb').read())
+        os.unlink(tmpfile)