"""Bases HTML components:

* the rql input form

* the logged user link

:organization: Logilab

:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

"""

__docformat__ = "restructuredtext en"

_ = unicode

from rql import parse

from cubicweb.selectors import yes, two_etypes_rset, match_form_params

from cubicweb.schema import display_name

from cubicweb.common.uilib import html_escape, toggle_action

from cubicweb.web import component

from cubicweb.web.htmlwidgets import (MenuWidget, PopupBoxMenu, BoxSeparator,

                                      BoxLink)

VISIBLE_PROP_DEF = {

    _('visible'):  dict(type='Boolean', default=True,

                        help=_('display the component or not')),

    }

class RQLInputForm(component.Component):

    """build the rql input form, usually displayed in the header"""

    id = 'rqlinput'

    property_defs = VISIBLE_PROP_DEF

    def call(self, view=None):

        if hasattr(view, 'filter_box_context_info'):

            rset = view.filter_box_context_info()[0]

        else:

            rset = self.rset

        # display multilines query as one line

        rql = rset is not None and rset.printable_rql(encoded=False) or self.req.form.get('rql', '')

        rql = rql.replace(u"\n", u" ")

        req = self.req

        self.w(u'''<div id="rqlinput" class="%s">

          <form action="%s">

<fieldset>

<input type="text" id="rql" name="rql" value="%s"  title="%s" tabindex="%s" accesskey="q" class="searchField" />

<input type="submit" value="" class="rqlsubmit" tabindex="%s" />

</fieldset>

''' % (not self.propval('visible') and 'hidden' or '', 

       self.build_url('view'), html_escape(rql), req._('full text or RQL query'), req.next_tabindex(),

        req.next_tabindex()))

        if self.req.search_state[0] != 'normal':

            self.w(u'<input type="hidden" name="__mode" value="%s"/>'

                   % ':'.join(req.search_state[1]))

        self.w(u'</form></div>')

class ApplLogo(component.Component):

    """build the application logo, usually displayed in the header"""

    id = 'logo'

    property_defs = VISIBLE_PROP_DEF

    # don't want user to hide this component using an cwproperty

    site_wide = True

    def call(self):

        self.w(u'<a href="%s"><img class="logo" src="%s" alt="logo"/></a>'

               % (self.req.base_url(), self.req.external_resource('LOGO')))

class ApplHelp(component.Component):

    """build the help button, usually displayed in the header"""

    id = 'help'

    property_defs = VISIBLE_PROP_DEF

    def call(self):

        self.w(u'<a href="%s" class="help" title="%s">&nbsp;</a>'

               % (self.build_url(_restpath='doc/main'),

                  self.req._(u'help'),))

class UserLink(component.Component):

    """if the user is the anonymous user, build a link to login

    else a link to the connected user object with a loggout link

    """

    property_defs = VISIBLE_PROP_DEF

    # don't want user to hide this component using an cwproperty

    site_wide = True

    id = 'loggeduserlink'

    def call(self):

        if not self.req.cnx.anonymous_connection:

            # display useractions and siteactions

            actions = self.vreg.possible_actions(self.req, self.rset)

            box = MenuWidget('', 'userActionsBox', _class='', islist=False)

            menu = PopupBoxMenu(self.req.user.login, isitem=False)

            box.append(menu)

            for action in actions.get('useractions', ()):

                menu.append(BoxLink(action.url(), self.req._(action.title),

                                    action.html_class()))

            if actions.get('useractions') and actions.get('siteactions'):

                menu.append(BoxSeparator())

            for action in actions.get('siteactions', ()):

                menu.append(BoxLink(action.url(), self.req._(action.title),

                                    action.html_class()))

            box.render(w=self.w)

        else:

            self.anon_user_link()

    def anon_user_link(self):

        if self.config['auth-mode'] == 'cookie':

            self.w(self.req._('anonymous'))

            self.w(u'''&nbsp;[<a class="logout" href="javascript: popupLoginBox();">%s</a>]'''

                   % (self.req._('i18n_login_popup')))

            # FIXME maybe have an other option to explicitely authorise registration

            #       also provide a working register view

#             if self.config['anonymous-user']:

#                 self.w(u'''&nbsp;[<a class="logout" href="?vid=register">%s</a>]'''

#                        % (self.req._('i18n_register_user')))

        else:

            self.w(self.req._('anonymous'))

            self.w(u'&nbsp;[<a class="logout" href="%s">%s</a>]'

                   % (self.build_url('login'), self.req._('login')))

class ApplicationMessage(component.Component):

    """display application's messages given using the __message parameter

    into a special div section

    """

    __select__ = yes()

    id = 'applmessages'

    # don't want user to hide this component using an cwproperty

    property_defs = {}

    def call(self):

        msgs = [msg for msg in (self.req.get_shared_data('sources_error', pop=True),

                                self.req.message) if msg]

        self.w(u'<div id="appMsg" onclick="%s" class="%s">\n' %

               (toggle_action('appMsg'), (msgs and ' ' or 'hidden')))

        for msg in msgs:

            self.w(u'<div class="message" id="%s">%s</div>' % (

                self.div_id(), msg))

        self.w(u'</div>')

class ApplicationName(component.Component):

    """display the application name"""

    id = 'appliname'

    property_defs = VISIBLE_PROP_DEF

    # don't want user to hide this component using an cwproperty

    site_wide = True

    def call(self):

        self.w(u'<span id="appliName"><a href="%s">%s</a></span>' % (

            self.req.base_url(), self.req.property_value('ui.site-title')))

class SeeAlsoVComponent(component.RelatedObjectsVComponent):

    """display any entity's see also"""

    id = 'seealso'

    context = 'navcontentbottom'

    rtype = 'see_also'

    role = 'subject'

    order = 40

    # register msg not generated since no entity use see_also in cubicweb itself

    title = _('contentnavigation_seealso')

    help = _('contentnavigation_seealso_description')

class EtypeRestrictionComponent(component.Component):

    """displays the list of entity types contained in the resultset

    to be able to filter accordingly.

    """

    id = 'etypenavigation'

    __select__ = two_etypes_rset() | match_form_params('__restrtype', '__restrtypes',

                                                       '__restrrql')

    property_defs = VISIBLE_PROP_DEF

    # don't want user to hide this component using an cwproperty

    site_wide = True

    visible = False # disabled by default

    def call(self):

        _ = self.req._

        self.w(u'<div id="etyperestriction">')

        restrtype = self.req.form.get('__restrtype')

        restrtypes = self.req.form.get('__restrtypes', '').split(',')

        restrrql = self.req.form.get('__restrrql')

        if not restrrql:

            rqlst = self.rset.syntax_tree()

            restrrql = rqlst.as_string(self.req.encoding, self.rset.args)

            restrtypes = self.rset.column_types(0)

        else:

            rqlst = parse(restrrql)

        html = []

        on_etype = False

        etypes = sorted((display_name(self.req, etype).capitalize(), etype)

                        for etype in restrtypes)

        for elabel, etype in etypes:

            if etype == restrtype:

                html.append(u'<span class="selected">%s</span>' % elabel)

                on_etype = True

            else:

                rqlst.save_state()

                for select in rqlst.children:

                    select.add_type_restriction(select.selection[0], etype)

                newrql = rqlst.as_string(self.req.encoding, self.rset.args)

                url = self.build_url(rql=newrql, __restrrql=restrrql,

                                     __restrtype=etype, __restrtypes=','.join(restrtypes))

                html.append(u'<span><a href="%s">%s</a></span>' % (

                        html_escape(url), elabel))

                rqlst.recover()

        if on_etype:

            url = self.build_url(rql=restrrql)

            html.insert(0, u'<span><a href="%s">%s</a></span>' % (

                    url, _('Any')))

        else:

            html.insert(0, u'<span class="selected">%s</span>' % _('Any'))

        self.w(u' | '.join(html))

        self.w(u'</div>')

def registration_callback(vreg):

    vreg.register_all(globals().values(), __name__, (SeeAlsoVComponent,))

    if 'see_also' in vreg.schema:

        vreg.register(SeeAlsoVComponent)