--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sat/tools/common/template.py	Mon Apr 02 19:44:50 2018 +0200
@@ -0,0 +1,653 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+# SAT: a jabber client
+# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program 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 Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""" template generation """
+
+from sat.core.constants import Const as C
+from sat.core.i18n import _
+from sat.core import exceptions
+from sat.core.log import getLogger
+log = getLogger(__name__)
+import os.path
+from xml.sax.saxutils import quoteattr
+import datetime
+import time
+import re
+from babel import support
+from babel import Locale
+from babel.core import UnknownLocaleError
+from babel import dates
+import pygments
+from pygments import lexers
+from pygments import formatters
+try:
+    import sat_templates
+except ImportError:
+    raise exceptions.MissingModule(u'sat_templates module is not available, please install it or check your path to use template engine')
+else:
+    sat_templates  # to avoid pyflakes warning
+
+try:
+    import jinja2
+except:
+    raise exceptions.MissingModule(u'Missing module jinja2, please install it from http://jinja.pocoo.org or with pip install jinja2')
+
+from jinja2 import Markup as safe
+from jinja2 import is_undefined
+from lxml import etree
+
+HTML_EXT = ('html', 'xhtml')
+DEFAULT_LOCALE = u'en_GB'
+RE_ATTR_ESCAPE = re.compile(r'[^a-z_-]')
+# TODO: handle external path (an additional search path for templates should be settable by user
+# TODO: handle absolute URL (should be used for trusted use cases) only (e.g. jp) for security reason
+
+
+class TemplateLoader(jinja2.FileSystemLoader):
+
+    def __init__(self):
+        searchpath = os.path.dirname(sat_templates.__file__)
+        super(TemplateLoader, self).__init__(searchpath, followlinks=True)
+
+    def parse_template(self, template):
+        """parse template path and return theme and relative URL
+
+        @param template_path(unicode): path to template with parenthesis syntax
+        @return (tuple[(unicode,None),unicode]): theme and template_path
+            theme can be None if relative path is used
+            relative path is the path from search path with theme specified
+            e.g. default/blog/articles.html
+        """
+        if template.startswith(u'('):
+            try:
+                theme_end = template.index(u')')
+            except IndexError:
+                raise ValueError(u"incorrect theme in template")
+            theme = template[1:theme_end]
+            template = template[theme_end+1:]
+            if not template or template.startswith(u'/'):
+                raise ValueError(u"incorrect path after template name")
+            template = os.path.join(theme, template)
+        elif template.startswith(u'/'):
+            # absolute path means no template
+            theme = None
+            raise NotImplementedError(u'absolute path is not implemented yet')
+        else:
+            theme = C.TEMPLATE_THEME_DEFAULT
+            template = os.path.join(theme, template)
+        return theme, template
+
+    def get_default_template(self, theme, template_path):
+        """return default template path
+
+        @param theme(unicode): theme used
+        @param template_path(unicode): path to the not found template
+        @return (unicode, None): default path or None if there is not
+        """
+        ext = os.path.splitext(template_path)[1][1:]
+        path_elems = template_path.split(u'/')
+        if ext in HTML_EXT:
+            if path_elems[1] == u'error':
+                # if an inexisting error page is requested, we return base page
+                default_path = os.path.join(theme, u'error/base.html')
+                return default_path
+        if theme != C.TEMPLATE_THEME_DEFAULT:
+            # if template doesn't exists for this theme, we try with default
+            return os.path.join(C.TEMPLATE_THEME_DEFAULT, path_elems[1:])
+
+    def get_source(self, environment, template):
+        """relative path to template dir, with special theme handling
+
+        if the path is just relative, "default" theme is used.
+        The theme can be specified in parenthesis just before the path
+        e.g.: (some_theme)path/to/template.html
+        """
+        theme, template_path = self.parse_template(template)
+        try:
+            return super(TemplateLoader, self).get_source(environment, template_path)
+        except jinja2.exceptions.TemplateNotFound as e:
+            # in some special cases, a defaut template is returned if nothing is found
+            if theme is not None:
+                default_path = self.get_default_template(theme, template_path)
+                if default_path is not None:
+                    return super(TemplateLoader, self).get_source(environment, default_path)
+            # if no default template is found, we re-raise the error
+            raise e
+
+
+class Indexer(object):
+    """Index global to a page"""
+
+    def __init__(self):
+        self._indexes = {}
+
+    def next(self, value):
+        if value not in self._indexes:
+            self._indexes[value] = 0
+            return 0
+        self._indexes[value] += 1
+        return self._indexes[value]
+
+    def current(self, value):
+        return self._indexes.get(value)
+
+
+class ScriptsHandler(object):
+
+    def __init__(self, renderer, template_path, template_root_dir, root_path):
+        self.renderer = renderer
+        self.template_root_dir = template_root_dir
+        self.root_path = root_path
+        self.scripts = []  # we don't use a set because order may be important
+        dummy, self.theme, self.is_default_theme = renderer.getThemeData(template_path)
+
+    def include(self, library_name, attribute='defer'):
+        """Mark that a script need to be imported.
+
+        Must be used before base.html is extended, as <script> are generated there.
+        If called several time with the same library, it will be imported once.
+        @param library_name(unicode): name of the library to import
+        @param loading:
+        """
+        if attribute not in ('defer', 'async', ''):
+            raise exceptions.DataError(_(u'Invalid attribute, please use one of "defer", "async" or ""'))
+        if library_name.endswith('.js'):
+            library_name = library_name[:-3]
+        if library_name not in self.scripts:
+            self.scripts.append((library_name, attribute))
+        return u''
+
+    def generate_scripts(self):
+        """Generate the <script> elements
+
+        @return (unicode): <scripts> HTML tags
+        """
+        scripts = []
+        tpl = u'<script src={src} {attribute}></script>'
+        for library, attribute in self.scripts:
+            path = self.renderer.getStaticPath(library, self.template_root_dir, self.theme, self.is_default_theme, '.js')
+            if path is None:
+                log.warning(_(u"Can't find {}.js javascript library").format(library))
+                continue
+            path = os.path.join(self.root_path, path)
+            scripts.append(tpl.format(
+                src = quoteattr(path),
+                attribute = attribute,
+                ))
+        return safe(u'\n'.join(scripts))
+
+
+class Renderer(object):
+
+    def __init__(self, host):
+        self.host = host
+        self.base_dir = os.path.dirname(sat_templates.__file__)  # FIXME: should be modified if we handle use extra dirs
+        self.env = jinja2.Environment(
+            loader=TemplateLoader(),
+            autoescape=jinja2.select_autoescape(['html', 'xhtml', 'xml']),
+            trim_blocks=True,
+            lstrip_blocks=True,
+            extensions=['jinja2.ext.i18n'],
+            )
+        self._locale_str = DEFAULT_LOCALE
+        self._locale = Locale.parse(self._locale_str)
+        self.installTranslations()
+        # we want to have access to SàT constants in templates
+        self.env.globals[u'C'] = C
+        # custom filters
+        self.env.filters['next_gidx'] = self._next_gidx
+        self.env.filters['cur_gidx'] = self._cur_gidx
+        self.env.filters['date_fmt'] = self._date_fmt
+        self.env.filters['xmlui_class'] = self._xmlui_class
+        self.env.filters['attr_escape'] = self.attr_escape
+        self.env.filters['item_filter'] = self._item_filter
+        self.env.filters['adv_format'] = self._adv_format
+        self.env.filters['dict_ext'] = self._dict_ext
+        self.env.filters['highlight'] = self.highlight
+        # custom tests
+        self.env.tests['in_the_past'] = self._in_the_past
+        self.icons_path = os.path.join(host.media_dir, u'fonts/fontello/svg')
+
+    def installTranslations(self):
+        i18n_dir = os.path.join(self.base_dir, 'i18n')
+        self.translations = {}
+        for lang_dir in os.listdir(i18n_dir):
+            lang_path = os.path.join(i18n_dir, lang_dir)
+            if not os.path.isdir(lang_path):
+                continue
+            po_path = os.path.join(lang_path, 'LC_MESSAGES/sat.mo')
+            try:
+                with open(po_path, 'rb') as f:
+                    self.translations[Locale.parse(lang_dir)] = support.Translations(f, 'sat')
+            except EnvironmentError:
+                log.error(_(u"Can't find template translation at {path}").format(path = po_path))
+            except UnknownLocaleError as e:
+                log.error(_(u"Invalid locale name: {msg}").format(msg=e))
+            else:
+                log.info(_(u'loaded {lang} templates translations').format(lang=lang_dir))
+        self.env.install_null_translations(True)
+
+    def setLocale(self, locale_str):
+        """set current locale
+
+        change current translation locale and self self._locale and self._locale_str
+        """
+        if locale_str == self._locale_str:
+            return
+        if locale_str == 'en':
+            # we default to GB English when it's not specified
+            # one of the main reason is to avoid the nonsense U.S. short date format
+            locale_str = 'en_GB'
+        try:
+            locale = Locale.parse(locale_str)
+        except ValueError as e:
+            log.warning(_(u"invalid locale value: {msg}").format(msg=e))
+            locale_str = self._locale_str = DEFAULT_LOCALE
+            locale = Locale.parse(locale_str)
+
+        locale_str = unicode(locale)
+        if locale_str != DEFAULT_LOCALE:
+            try:
+                translations = self.translations[locale]
+            except KeyError:
+                log.warning(_(u"Can't find locale {locale}".format(locale=locale)))
+                locale_str = DEFAULT_LOCALE
+                locale = Locale.parse(self._locale_str)
+            else:
+                self.env.install_gettext_translations(translations, True)
+                log.debug(_(u'Switched to {lang}').format(lang=locale.english_name))
+
+        if locale_str == DEFAULT_LOCALE:
+            self.env.install_null_translations(True)
+
+        self._locale = locale
+        self._locale_str = locale_str
+
+    def getThemeAndRoot(self, template):
+        """retrieve theme and root dir of a given tempalte
+
+        @param template(unicode): template to parse
+        @return (tuple[unicode, unicode]): theme and absolute path to theme's root dir
+        """
+        theme, dummy = self.env.loader.parse_template(template)
+        return theme, os.path.join(self.base_dir, theme)
+
+    def getStaticPath(self, name, template_root_dir, theme, is_default, ext='.css'):
+        """retrieve path of a static file if it exists with current theme or default
+
+        File will be looked at [theme]/static/[name][ext], and then default
+        if not found.
+        @param name(unicode): name of the file to look for
+        @param template_root_dir(unicode): absolute path to template root used
+        @param theme(unicode): name of the template theme used
+        @param is_default(bool): True if theme is the default theme
+        @return (unicode, None): relative path if found, else None
+        """
+        file_ = None
+        path = os.path.join(theme, C.TEMPLATE_STATIC_DIR, name + ext)
+        if os.path.exists(os.path.join(template_root_dir, path)):
+            file_ = path
+        elif not is_default:
+            path = os.path.join(C.TEMPLATE_THEME_DEFAULT, C.TEMPLATE_STATIC_DIR, name + ext)
+            if os.path.exists(os.path.join(template_root_dir, path)):
+                file_.append(path)
+        return file_
+
+    def getThemeData(self, template_path):
+        """return template data got from template_path
+
+        @return tuple(unicode, unicode, bool):
+            path_elems: elements of the path
+            theme: theme of the page
+            is_default: True if the theme is the default theme
+        """
+        path_elems = [os.path.splitext(p)[0] for p in template_path.split(u'/')]
+        theme = path_elems.pop(0)
+        is_default = theme == C.TEMPLATE_THEME_DEFAULT
+        return (path_elems, theme, is_default)
+
+    def getCSSFiles(self, template_path, template_root_dir):
+        """retrieve CSS files to use according to theme and template path
+
+        for each element of the path, a .css file is looked for in /static, and returned if it exists.
+        previous element are kept by replacing '/' with '_', and styles.css is always returned.
+        For instance, if template_path is some_theme/blog/articles.html:
+            some_theme/static/styles.css is returned if it exists else default/static/styles.css
+            some_theme/static/blog.css is returned if it exists else default/static/blog.css (if it exists too)
+            some_theme/static/blog_articles.css is returned if it exists else default/static/blog_articles.css (if it exists too)
+        @param template_path(unicode): relative path to template file (e.g. some_theme/blog/articles.html)
+        @param template_root_dir(unicode): absolute path of the theme root dir used
+        @return list[unicode]: relative path to CSS files to use
+        """
+        # TODO: some caching would be nice
+        css_files = []
+        path_elems, theme, is_default = self.getThemeData(template_path)
+        for css in (u'fonts', u'styles'):
+            css_path = self.getStaticPath(css, template_root_dir, theme, is_default)
+            if css_path is not None:
+                css_files.append(css_path)
+
+        for idx, path in enumerate(path_elems):
+            css_path = self.getStaticPath(u'_'.join(path_elems[:idx+1]), template_root_dir, theme, is_default)
+            if css_path is not None:
+                css_files.append(css_path)
+
+        return css_files
+
+
+    ## custom filters ##
+
+    @jinja2.contextfilter
+    def _next_gidx(self, ctx, value):
+        """Use next current global index as suffix"""
+        next_ = ctx['gidx'].next(value)
+        return value if next_ == 0 else u"{}_{}".format(value, next_)
+
+    @jinja2.contextfilter
+    def _cur_gidx(self, ctx, value):
+        """Use current current global index as suffix"""
+        current = ctx['gidx'].current(value)
+        return value if not current else u"{}_{}".format(value, current)
+
+    def _date_fmt(self, timestamp, fmt='short', date_only=False, auto_limit=None, auto_old_fmt=None):
+        try:
+            return self.date_fmt(timestamp, fmt, date_only, auto_limit, auto_old_fmt)
+        except Exception as e:
+            log.warning(_(u"Can't parse date: {msg}").format(msg=e))
+            return timestamp
+
+    def date_fmt(self, timestamp, fmt='short', date_only=False, auto_limit=7, auto_old_fmt='short', auto_new_fmt='relative'):
+        """format date according to locale
+
+        @param timestamp(basestring, int): unix time
+        @param fmt(str): one of:
+            - short: e.g. u'31/12/17'
+            - medium: e.g. u'Apr 1, 2007'
+            - long: e.g. u'April 1, 2007'
+            - full: e.g. u'Sunday, April 1, 2007'
+            - relative: format in relative time
+                e.g.: 3 hours
+                note that this format is not precise
+            - iso: ISO 8601 format
+                e.g.: u'2007-04-01T19:53:23Z'
+            - auto: use auto_old_fmt if date is older than auto_limit
+                else use auto_new_fmt
+            - auto_day: shorcut to set auto format with change on day
+                old format will be short, and new format will be time only
+            or a free value which is passed to babel.dates.format_datetime
+        @param date_only(bool): if True, only display date (not datetime)
+        @param auto_limit (int): limit in days before using auto_old_fmt
+            use 0 to have a limit at last midnight (day change)
+        @param auto_old_fmt(unicode): format to use when date is older than limit
+        @param auto_new_fmt(unicode): format to use when date is equal to or more recent
+            than limit
+
+        """
+        if is_undefined(fmt):
+            fmt = u'short'
+
+        if (auto_limit is not None or auto_old_fmt is not None) and fmt != 'auto':
+            raise ValueError(u'auto argument can only be used with auto fmt')
+        if fmt == 'auto_day':
+            fmt, auto_limit, auto_old_fmt, auto_new_fmt = 'auto', 0, 'short', 'HH:mm'
+        if fmt == 'auto':
+            if auto_limit == 0:
+                today = time.mktime(datetime.date.today().timetuple())
+                if int(timestamp) < today:
+                    fmt = auto_old_fmt
+                else:
+                    fmt = auto_new_fmt
+            else:
+                days_delta = (time.time() - int(timestamp)) / 3600
+                if days_delta > (auto_limit or 7):
+                    fmt = auto_old_fmt
+                else:
+                    fmt = auto_new_fmt
+
+        if fmt == 'relative':
+            delta = int(timestamp) - time.time()
+            return dates.format_timedelta(delta, granularity="minute", add_direction=True, locale=self._locale_str)
+        elif fmt in ('short', 'long'):
+            formatter = dates.format_date if date_only else dates.format_datetime
+            return formatter(int(timestamp), format=fmt, locale=self._locale_str)
+        elif fmt == 'iso':
+            if date_only:
+                fmt = 'yyyy-MM-dd'
+            else:
+                fmt = "yyyy-MM-ddTHH:mm:ss'Z'"
+            return dates.format_datetime(int(timestamp), format=fmt)
+        else:
+            return dates.format_datetime(int(timestamp), format=fmt, locale=self._locale_str)
+
+    def attr_escape(self, text):
+        """escape a text to a value usable as an attribute
+
+        remove spaces, and put in lower case
+        """
+        return RE_ATTR_ESCAPE.sub(u'_', text.strip().lower())[:50]
+
+    def _xmlui_class(self, xmlui_item, fields):
+        """return classes computed from XMLUI fields name
+
+        will return a string with a series of escaped {name}_{value} separated by spaces.
+        @param xmlui_item(xmlui.XMLUIPanel): XMLUI containing the widgets to use
+        @param fields(iterable(unicode)): names of the widgets to use
+        @return (unicode, None): computer string to use as class attribute value
+            None if no field was specified
+        """
+        classes = []
+        for name in fields:
+            escaped_name = self.attr_escape(name)
+            try:
+                for value in xmlui_item.widgets[name].values:
+                    classes.append(escaped_name + '_' + self.attr_escape(value))
+            except KeyError:
+                log.debug(_(u"ignoring field \"{name}\": it doesn't exists").format(name=name))
+                continue
+        return u' '.join(classes) or None
+
+    @jinja2.contextfilter
+    def _item_filter(self, ctx, item, filters):
+        """return item's value, filtered if suitable
+
+        @param item(object): item to filter
+            value must have name and value attributes,
+            mostly used for XMLUI items
+        @param filters(dict[unicode, (callable, dict, None)]): map of name => filter
+            if filter is None, return the value unchanged
+            if filter is a callable, apply it
+            if filter is a dict, it can have following keys:
+                - filters: iterable of filters to apply
+                - filters_args: kwargs of filters in the same order as filters (use empty dict if needed)
+                - template: template to format where {value} is the filtered value
+        """
+        value = item.value
+        filter_ = filters.get(item.name, None)
+        if filter_ is None:
+            return value
+        elif isinstance(filter_, dict):
+            filters_args = filter_.get(u'filters_args')
+            for idx, f_name in enumerate(filter_.get(u'filters', [])):
+                kwargs = filters_args[idx] if filters_args is not None else {}
+                filter_func = self.env.filters[f_name]
+                try:
+                    eval_context_filter = filter_func.evalcontextfilter
+                except AttributeError:
+                    eval_context_filter = False
+
+                if eval_context_filter:
+                    value = filter_func(ctx.eval_ctx, value, **kwargs)
+                else:
+                    value = filter_func(value, **kwargs)
+            template = filter_.get(u'template')
+            if template:
+                # format will return a string, so we need to check first
+                # if the value is safe or not, and re-mark it after formatting
+                is_safe = isinstance(value, safe)
+                value = template.format(value=value)
+                if is_safe:
+                    value = safe(value)
+            return value
+
+    def _adv_format(self, value, template, **kwargs):
+        """Advancer formatter
+
+        like format() method, but take care or special values like None
+        @param value(unicode): value to format
+        @param template(None, unicode): template to use with format() method.
+            It will be formatted using value=value and **kwargs
+            None to return value unchanged
+        @return (unicode): formatted value
+        """
+        if template is None:
+            return value
+        # jinja use string when no special char is used, so we have to convert to unicode
+        return unicode(template).format(value=value, **kwargs)
+
+    def _dict_ext(self, source_dict, extra_dict, key=None):
+        """extend source_dict with extra dict and return the result
+
+        @param source_dict(dict): dictionary to extend
+        @param extra_dict(dict, None): dictionary to use to extend first one
+            None to return source_dict unmodified
+        @param key(unicode, None): if specified extra_dict[key] will be used
+            if it doesn't exists, a copy of unmodified source_dict is returned
+        @return (dict): resulting dictionary
+        """
+        if extra_dict is None:
+            return source_dict
+        if key is not None:
+            extra_dict = extra_dict.get(key, {})
+        ret = source_dict.copy()
+        ret.update(extra_dict)
+        return ret
+
+    def highlight(self, code, lexer_name=None, lexer_opts=None, html_fmt_opts=None):
+        """Do syntax highlighting on code
+
+        under the hood, pygments is used, check its documentation for options possible values
+        @param code(unicode): code or markup to highlight
+        @param lexer_name(unicode, None): name of the lexer to use
+            None to autodetect it
+        @param html_fmt_opts(dict, None): kword arguments to use for HtmlFormatter
+        @return (unicode): HTML markup with highlight classes
+        """
+        if lexer_opts is None:
+            lexer_opts = {}
+        if html_fmt_opts is None:
+            html_fmt_opts = {}
+        if lexer_name is None:
+            lexer = lexers.guess_lexer(code, **lexer_opts)
+        else:
+            lexer = lexers.get_lexer_by_name(lexer_name, **lexer_opts)
+        formatter = formatters.HtmlFormatter(**html_fmt_opts)
+        return safe(pygments.highlight(code, lexer, formatter))
+
+    ## custom tests ##
+
+    def _in_the_past(self, timestamp):
+        """check if a date is in the past
+
+        @param timestamp(unicode, int): unix time
+        @return (bool): True if date is in the past
+        """
+        return time.time() > int(timestamp)
+
+    ## template methods ##
+
+    def _icon_defs(self, *names):
+        """Define svg icons which will be used in the template, and use their name as id"""
+        svg_elt = etree.Element('svg', nsmap={None: 'http://www.w3.org/2000/svg'},
+                                width='0', height='0', style='display: block'
+                                )
+        defs_elt = etree.SubElement(svg_elt, 'defs')
+        for name in names:
+            path = os.path.join(self.icons_path, name + u'.svg')
+            icon_svg_elt = etree.parse(path).getroot()
+            # we use icon name as id, so we can retrieve them easily
+            icon_svg_elt.set('id', name)
+            if not icon_svg_elt.tag == '{http://www.w3.org/2000/svg}svg':
+                raise exceptions.DataError(u'invalid SVG element')
+            defs_elt.append(icon_svg_elt)
+        return safe(etree.tostring(svg_elt, encoding='unicode'))
+
+    def _icon_use(self, name, cls=''):
+        return safe(u"""<svg class="svg-icon{cls}" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
+          <use href="#{name}"/>
+        </svg>
+        """.format(
+            name=name,
+            cls=(' ' + cls) if cls else ''))
+
+    def render(self, template, theme=None, locale=DEFAULT_LOCALE, root_path=u'', media_path=u'', css_files=None, css_inline=False, **kwargs):
+        """render a template
+.
+        @param template(unicode): template to render (e.g. blog/articles.html)
+        @param theme(unicode): template theme
+        @param root_path(unicode): prefix of the path/URL to use for template root
+            must end with a u'/'
+        @param media_path(unicode): prefix of the SàT media path/URL to use for template root
+            must end with a u'/'
+        @param css_files(list[unicode],None): CSS files to used
+            CSS files must be in static dir of the template
+            use None for automatic selection of CSS files based on template category
+            None is recommended. General static/style.css and theme file name will be used.
+        @param css_inline(bool): if True, CSS will be embedded in the HTML page
+        @param **kwargs: variable to transmit to the template
+        """
+        if not template:
+            raise ValueError(u"template can't be empty")
+        if theme is not None:
+            # use want to set a theme, we add it to the template path
+            if template[0] == u'(':
+                raise ValueError(u"you can't specify theme in template path and in argument at the same time")
+            elif template[0] == u'/':
+                raise ValueError(u"you can't specify theme with absolute paths")
+            template= u'(' + theme + u')' + template
+        else:
+            theme, dummy = self.env.loader.parse_template(template)
+
+        template_source = self.env.get_template(template)
+        template_root_dir = os.path.normpath(self.base_dir)  # FIXME: should be modified if we handle use extra dirs
+        # XXX: template_path may have a different theme as first element than theme if a default page is used
+        template_path = template_source.filename[len(template_root_dir)+1:]
+
+        if css_files is None:
+            css_files = self.getCSSFiles(template_path, template_root_dir)
+
+        kwargs['icon_defs'] = self._icon_defs
+        kwargs['icon'] = self._icon_use
+
+        if css_inline:
+            css_contents = []
+            for css_file in css_files:
+                css_file_path = os.path.join(template_root_dir, css_file)
+                with open(css_file_path) as f:
+                    css_contents.append(f.read())
+            if css_contents:
+                kwargs['css_content'] = '\n'.join(css_contents)
+
+        scripts_handler = ScriptsHandler(self, template_path, template_root_dir, root_path)
+        self.setLocale(locale)
+        # XXX: theme used in template arguments is the requested theme, which may differ from actual theme
+        #      if the template doesn't exist in the requested theme.
+        return template_source.render(theme=theme, root_path=root_path, media_path=media_path,
+                                      css_files=css_files, locale=self._locale,
+                                      gidx=Indexer(), script=scripts_handler,
+                                      **kwargs)