# 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/>.

"""Basic views for python values (eg without any result set)

"""

__docformat__ = "restructuredtext en"

from cubicweb.view import View

from cubicweb.predicates import match_kwargs

from cubicweb.web.views import tableview

class PyValTableColRenderer(tableview.AbstractColumnRenderer):

    """Default column renderer for :class:`PyValTableView`."""

    def bind(self, view, colid):

        super(PyValTableColRenderer, self).bind(view, colid)

        self.header = view.headers[colid] if view.headers else None

        self.data = view.pyvalue

    def render_header(self, w):

        if self.header:

            w(self._cw._(self.header))

        else:

            w(self.empty_cell_content)

    def render_cell(self, w, rownum):

        w(unicode(self.data[rownum][self.colid]))

class PyValTableView(tableview.TableMixIn, View):

    """This table view is designed to be used a list of list of unicode values

    given as a mandatory `pyvalue` argument. Take care, content is NOT

    xml-escaped.

    It's configured through the following selection arguments.

    If `headers` is specified, it is expected to be a list of headers to be

    inserted as first row (in <thead>).

    `header_column_idx` may be used to specify a column index or a set of column

    indiced where values should be inserted inside <th> tag instead of <td>.

    `cssclass` is the CSS class used on the <table> tag, and default to

    'listing' (so that the table will look similar to those generated by the

    table view).

    """

    __regid__ = 'pyvaltable'

    __select__ = match_kwargs('pyvalue')

    default_column_renderer_class = PyValTableColRenderer

    paginable = False # not supported

    headers = None

    cssclass = None

    domid = None

    def __init__(self, req, pyvalue, headers=None, cssclass=None,

                 header_column_idx=None, **kwargs):

        super(PyValTableView, self).__init__(req, **kwargs)

        self.pyvalue = pyvalue

        if headers is not None:

            self.headers = headers

        elif self.headers: # headers set on a class attribute, translate

            self.headers = [self._cw._(header) for header in self.headers]

        if cssclass is not None:

            self.cssclass = cssclass

        self.header_column_idx = header_column_idx

    @property

    def layout_args(self):

        args = {}

        if self.cssclass:

            args['cssclass'] = self.cssclass

        if self.header_column_idx is not None:

            args['header_column_idx'] = self.header_column_idx

        return args

    # layout callbacks #########################################################

    @property

    def table_size(self):

        """return the number of rows (header excluded) to be displayed"""

        return len(self.pyvalue)

    @property

    def has_headers(self):

        return self.headers

    def build_column_renderers(self):

        return [self.column_renderer(colid)

                for colid in xrange(len(self.pyvalue[0]))]

    def facets_form(self, mainvar=None):

        return None # not supported

    def table_actions(self):

        return [] # not supported

class PyValListView(View):

    """display a list of values into an html list.

    Take care, content is NOT xml-escaped.

    """

    __regid__ = 'pyvallist'

    __select__ = match_kwargs('pyvalue')

    def call(self, pyvalue):

        self.w(u'<ul>\n')

        for line in pyvalue:

            self.w(u'<li>%s</li>\n' % line)

        self.w(u'</ul>\n')