source: main/waeup.kofa/trunk/src/waeup/kofa/students/viewlets.py @ 17660

## $Id: viewlets.py 17402 2023-05-04 21:40:25Z henrik $
##
## Copyright (C) 2011 Uli Fouquet & Henrik Bettermann
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 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 General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##
import grok
from zope.component import getUtility
from zope.i18n import translate
from zope.interface import Interface
from waeup.kofa.browser.layout import default_primary_nav_template
from waeup.kofa.browser.viewlets import (
    PrimaryNavTab, ManageActionButton, AddActionButton)
from waeup.kofa.interfaces import MessageFactory as _
from waeup.kofa.interfaces import IExtFileStore, IKofaObject
from waeup.kofa.students.browser import (
    StudentsContainerPage, StudentsContainerManagePage,
    StudentBaseDisplayFormPage, StudentClearanceDisplayFormPage,
    StudentPersonalDisplayFormPage, StudyCourseDisplayFormPage,
    StudyLevelDisplayFormPage, CourseTicketDisplayFormPage,
    OnlinePaymentDisplayFormPage, BedTicketDisplayFormPage,
    StudentClearanceEditFormPage, StudentPersonalEditFormPage,
    PaymentsManageFormPage, StudyCourseTranscriptPage)
from waeup.kofa.students.interfaces import (
    IStudentsContainer, IStudent, IStudentStudyCourse, IStudentStudyLevel,
    ICourseTicket, IStudentOnlinePayment, IBedTicket,
    IStudentPaymentsContainer, IStudentsUtils,
    )
from waeup.kofa.students.workflow import (
    ADMITTED, PAID, REQUESTED, CLEARED, REGISTERED, VALIDATED, GRADUATED,
    TRANSREQ, TRANSVAL, TRANSREL)


grok.context(IKofaObject)  # Make IKofaObject the default context
grok.templatedir('browser_templates')


class StudentManageSidebar(grok.ViewletManager):
    grok.name('left_studentmanage')


class StudentManageLink(grok.Viewlet):
    """A link displayed in the student box which shows up for StudentNavigation
    objects.

    """
    grok.baseclass()
    grok.viewletmanager(StudentManageSidebar)
    grok.context(IKofaObject)
    grok.view(Interface)
    grok.order(5)
    grok.require('waeup.viewStudent')

    link = 'index'
    text = _(u'Base Data')

    def render(self):
        url = self.view.url(self.context.student, self.link)
        # Here we know that the cookie has been set
        lang = self.request.cookies.get('kofa.language')
        text = translate(
            self.text, 'waeup.kofa', target_language=lang)
        if not self.link:
            return ''
        return u'<li><a href="%s">%s</a></li>' % (
            url, text)


class StudentManageApplicationLink(StudentManageLink):
    grok.order(1)
    link = 'application_slip'
    text = _(u'Application Slip')

    def render(self):
        slip = getUtility(IExtFileStore).getFileByContext(
            self.context.student, attr=self.link)
        if slip:
            lang = self.request.cookies.get('kofa.language')
            text = translate(
                self.text, 'waeup.kofa', target_language=lang)
            url = self.view.url(self.context.student, self.link)
            return u'<li><a href="%s">%s</a></li>' % (
                url, text)
        return ''

class StudentManageBaseLink(StudentManageLink):
    grok.order(2)
    link = 'index'
    text = _(u'Base Data')


class StudentManageClearanceLink(StudentManageLink):
    grok.order(3)
    grok.name('studentmanageclearancelink')
    link = 'view_clearance'
    text = _(u'Clearance Data')


class StudentManagePersonalLink(StudentManageLink):
    grok.order(4)
    grok.name('studentmanagepersonallink')
    link = 'view_personal'
    text = _(u'Personal Data')


class StudentManageStudyCourseLink(StudentManageLink):
    grok.order(5)
    link = 'studycourse'
    text = _(u'Study Course')


class StudentManagePaymentsLink(StudentManageLink):
    grok.order(6)
    grok.require('waeup.viewStudent')
    link = 'payments'
    text = _(u'Payments')


class StudentManageAccommodationLink(StudentManageLink):
    grok.order(7)
    grok.name('studentmanageaccommodationlink')
    grok.require('waeup.viewStudent')
    link = 'accommodation'
    text = _(u'Accommodation')


class StudentManageHistoryLink(StudentManageLink):
    grok.order(8)
    link = 'history'
    text = _(u'History')


class StudentManageTranscriptLink(StudentManageLink):
    grok.order(9)
    link = 'final_transcript'
    text = _(u'Final Transcript')

    def render(self):
        slip = getUtility(IExtFileStore).getFileByContext(
            self.context.student, attr=self.link)
        if slip:
            lang = self.request.cookies.get('kofa.language')
            text = translate(
                self.text, 'waeup.kofa', target_language=lang)
            url = self.view.url(self.context.student, self.link)
            return u'<li><a href="%s">%s</a></li>' % (
                url, text)
        return ''


class StudentsContainerManageActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudentsContainer)
    grok.view(StudentsContainerPage)
    grok.require('waeup.manageStudent')
    text = _('Manage students section')


class StudentsContainerAddActionButton(AddActionButton):
    grok.order(1)
    grok.context(IStudentsContainer)
    grok.view(StudentsContainerManagePage)
    grok.require('waeup.manageStudent')
    text = _('Add student')
    target = 'addstudent'


class ContactActionButton(ManageActionButton):
    grok.order(5)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_mail.png'
    text = _('Send email')
    target = 'contactstudent'


class StudentBaseManageActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Manage')
    target = 'manage_base'


class StudentTrigTransActionButton(ManageActionButton):
    grok.order(2)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.triggerTransition')
    icon = 'actionicon_trigtrans.png'
    text = _(u'Trigger transition')
    target = 'trigtrans'


class StudentLoginAsActionButton(ManageActionButton):
    grok.order(3)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.loginAsStudent')
    icon = 'actionicon_mask.png'
    text = _(u'Login as student')
    target = 'loginasstep1'


class AdmissionSlipActionButton(ManageActionButton):
    grok.order(4)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_pdf.png'
    text = _('Download admission letter')
    target = 'admission_slip.pdf'


class StudentTransferButton(ManageActionButton):
    grok.order(6)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Transfer student')
    target = 'transfer'
    icon = 'actionicon_redo.png'


class StudentDeactivateActionButton(ManageActionButton):
    grok.order(7)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Deactivate account')
    target = 'deactivate'
    icon = 'actionicon_traffic_lights_red.png'

    @property
    def target_url(self):
        if self.context.suspended:
            return ''
        return self.view.url(self.view.context, self.target)

    @property
    def onclick(self):
        return "return window.confirm(%s);" % _(
            "'A history message will be added. Are you sure?'")


class StudentActivateActionButton(ManageActionButton):
    grok.order(7)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Activate account')
    target = 'activate'
    icon = 'actionicon_traffic_lights_green.png'

    @property
    def target_url(self):
        if not self.context.suspended:
            return ''
        return self.view.url(self.view.context, self.target)

    @property
    def onclick(self):
        return "return window.confirm(%s);" % _(
            "'A history message will be added. Are you sure?'")


class StudentClearanceManageActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentClearanceDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Manage')
    target = 'manage_clearance'


class StudentClearActionButton(ManageActionButton):
    grok.order(2)
    grok.context(IStudent)
    grok.view(StudentClearanceDisplayFormPage)
    grok.require('waeup.clearStudent')
    text = _('Clear student')
    target = 'clear'
    icon = 'actionicon_accept.png'

    @property
    def target_url(self):
        cdm = getUtility(
            IStudentsUtils).clearance_disabled_message(self.context)
        if cdm:
            return ''
        if self.context.state != REQUESTED:
            return ''
        return self.view.url(self.view.context, self.target)

class StudentTemporarilyClearActionButton(ManageActionButton):
    grok.order(3)
    grok.context(IStudent)
    grok.view(StudentClearanceDisplayFormPage)
    grok.require('waeup.clearStudent')
    text = _('Clear student temporarily')
    target = 'temp_clearance'
    icon = 'actionicon_accept.png'

    @property
    def target_url(self):
        cdm = getUtility(
            IStudentsUtils).clearance_disabled_message(self.context)
        if cdm:
            return ''
        if self.context.officer_comment \
            and self.context.officer_comment.startswith('Temporarily cleared'):
            return ''
        if self.context.state != REQUESTED:
            return ''
        return self.view.url(self.view.context, self.target)


class StudentRejectClearanceActionButton(ManageActionButton):
    grok.order(4)
    grok.context(IStudent)
    grok.view(StudentClearanceDisplayFormPage)
    grok.require('waeup.clearStudent')
    text = _('Reject clearance')
    target = 'reject_clearance'
    icon = 'actionicon_reject.png'

    @property
    def target_url(self):
        cdm = getUtility(
            IStudentsUtils).clearance_disabled_message(self.context)
        if cdm:
            return ''
        if self.context.state not in (REQUESTED, CLEARED):
            return ''
        return self.view.url(self.view.context, self.target)


class ClearanceSlipActionButton(ManageActionButton):
    grok.order(5)
    grok.context(IStudent)
    grok.view(StudentClearanceDisplayFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_pdf.png'
    text = _('Download clearance slip')
    target = 'clearance_slip.pdf'


class ClearanceViewActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentClearanceEditFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_view.png'
    text = _('View')
    target = 'view_clearance'


class PersonalViewActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentPersonalEditFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_view.png'
    text = _('View')
    target = 'view_personal'


class StudentPersonalManageActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentPersonalDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Manage')
    target = 'manage_personal'


class StudentPersonalEditActionButton(ManageActionButton):
    grok.order(2)
    grok.context(IStudent)
    grok.view(StudentPersonalDisplayFormPage)
    grok.require('waeup.handleStudent')
    text = _('Edit')
    target = 'edit_personal'


class StudyCourseManageActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Manage')
    target = 'manage'

    @property
    def target_url(self):
        if self.context.is_current:
            return self.view.url(self.view.context, self.target)
        return False


class RevertTransferActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseDisplayFormPage)
    grok.require('waeup.manageStudent')
    icon = 'actionicon_undo.png'
    text = _('Reactivate this study course (revert previous transfer)')
    target = 'revert_transfer'

    @property
    def target_url(self):
        if self.context.is_previous:
            return self.view.url(self.view.context.__parent__, self.target)
        return False


class StudyLevelManageActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudentStudyLevel)
    grok.view(StudyLevelDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Manage')
    target = 'manage'

    @property
    def target_url(self):
        is_current = self.context.__parent__.is_current
        if not is_current:
            return ''
        return self.view.url(self.view.context, self.target)


class StudentValidateCoursesActionButton(ManageActionButton):
    grok.order(3)
    grok.context(IStudentStudyLevel)
    grok.view(StudyLevelDisplayFormPage)
    grok.require('waeup.validateStudent')
    text = _('Validate courses')
    target = 'validate_courses'
    icon = 'actionicon_accept.png'

    @property
    def target_url(self):
        if not self.context.__parent__.is_current:
            return ''
        if self.context.student.state != REGISTERED:
            return ''
        if str(self.context.__parent__.current_level) != self.context.__name__:
            return ''
        return self.view.url(self.view.context, self.target)


class StudentRejectCoursesActionButton(ManageActionButton):
    grok.order(4)
    grok.context(IStudentStudyLevel)
    grok.view(StudyLevelDisplayFormPage)
    grok.require('waeup.validateStudent')
    text = _('Reject courses')
    target = 'reject_courses'
    icon = 'actionicon_reject.png'

    @property
    def target_url(self):
        if not self.context.__parent__.is_current:
            return ''
        if self.context.student.state not in (VALIDATED, REGISTERED):
            return ''
        if str(self.context.__parent__.current_level) != self.context.__name__:
            return ''
        return self.view.url(self.view.context, self.target)


class StudentUnregisterCoursesActionButton(ManageActionButton):
    grok.order(5)
    grok.context(IStudentStudyLevel)
    grok.view(StudyLevelDisplayFormPage)
    grok.require('waeup.handleStudent')
    text = _('Unregister courses')
    target = 'unregister_courses'
    icon = 'actionicon_reject.png'

    @property
    def onclick(self):
        return "return window.confirm(%s);" % _(
            "'You really want to unregister your course list?'")

    @property
    def target_url(self):
        if not self.context.__parent__.is_current:
            return ''
        if self.context.student.state != REGISTERED:
            return ''
        if str(self.context.__parent__.current_level) != self.context.__name__:
            return ''
        return self.view.url(self.view.context, self.target)


class CourseRegistrationSlipActionButton(ManageActionButton):
    grok.order(6)
    grok.context(IStudentStudyLevel)
    grok.view(StudyLevelDisplayFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_pdf.png'
    text = _('Download course registration slip')
    target = 'course_registration_slip.pdf'

    @property
    def target_url(self):
        is_current = self.context.__parent__.is_current
        if not is_current:
            return ''
        return self.view.url(self.view.context, self.target)


class CourseTicketManageActionButton(ManageActionButton):
    grok.order(1)
    grok.context(ICourseTicket)
    grok.view(CourseTicketDisplayFormPage)
    grok.require('waeup.manageStudent')
    text = _('Manage')
    target = 'manage'


class PaymentReceiptActionButton(ManageActionButton):
    grok.order(9)  # This button should always be the last one.
    grok.context(IStudentOnlinePayment)
    grok.view(OnlinePaymentDisplayFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_pdf.png'
    text = _('Download payment slip')
    target = 'payment_slip.pdf'

    @property
    def target_url(self):
        #if self.context.p_state != 'paid':
        #    return ''
        return self.view.url(self.view.context, self.target)


class ApprovePaymentActionButton(ManageActionButton):
    grok.order(20)
    grok.context(IStudentOnlinePayment)
    grok.view(OnlinePaymentDisplayFormPage)
    grok.require('waeup.managePortal')
    icon = 'actionicon_accept.png'
    text = _('Approve payment')
    target = 'approve'

    @property
    def target_url(self):
        if self.context.p_state in ('paid', 'waived', 'scholarship'):
            return ''
        return self.view.url(self.view.context, self.target)


class BedTicketSlipActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IBedTicket)
    grok.view(BedTicketDisplayFormPage)
    grok.require('waeup.viewStudent')
    icon = 'actionicon_pdf.png'
    text = _('Download bed allocation slip')
    target = 'bed_allocation_slip.pdf'


class RelocateStudentActionButton(ManageActionButton):
    grok.order(2)
    grok.context(IBedTicket)
    grok.view(BedTicketDisplayFormPage)
    grok.require('waeup.manageHostels')
    icon = 'actionicon_reload.png'
    text = _('Relocate student')
    target = 'relocate'


class StudentBaseActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.handleStudent')
    text = _('Edit')
    target = 'edit_base'


class StudentPasswordActionButton(ManageActionButton):
    grok.order(2)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.handleStudent')
    icon = 'actionicon_key.png'
    text = _('Change password')
    target = 'change_password'


class StudentPassportActionButton(ManageActionButton):
    grok.order(3)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.handleStudent')
    icon = 'actionicon_portrait.png'
    text = _('Change portrait')
    target = 'change_portrait'

    @property
    def target_url(self):
        if not getUtility(IStudentsUtils).allowPortraitChange(self.context):
            return ''
        return self.view.url(self.view.context, self.target)

class StudentSignatureActionButton(ManageActionButton):
    grok.order(4)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.handleStudent')
    icon = 'actionicon_signature.png'
    text = _('Upload signature')
    target = 'change_signature'

    @property
    def target_url(self):
        SIGNATURE_CHANGE_STATES = getUtility(
            IStudentsUtils).SIGNATURE_CHANGE_STATES
        if self.context.state not in SIGNATURE_CHANGE_STATES:
            return ''
        return self.view.url(self.view.context, self.target)


class StudentClearanceStartActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentClearanceDisplayFormPage)
    grok.require('waeup.handleStudent')
    icon = 'actionicon_start.gif'
    text = _('Start clearance')
    target = 'start_clearance'

    @property
    def target_url(self):
        if self.context.state != ADMITTED:
            return ''
        return self.view.url(self.view.context, self.target)


class StudentClearanceEditActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudent)
    grok.view(StudentClearanceDisplayFormPage)
    grok.require('waeup.handleStudent')
    text = _('Edit')
    target = 'cedit'

    @property
    def target_url(self):
        if self.context.clearance_locked:
            return ''
        return self.view.url(self.view.context, self.target)


class StartSessionActionButton(ManageActionButton):
    grok.order(1)
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseDisplayFormPage)
    grok.require('waeup.handleStudent')
    icon = 'actionicon_start.gif'
    text = _('Start new session')
    target = 'start_session'

    @property
    def target_url(self):
        if self.context.next_session_allowed and self.context.is_current:
            return self.view.url(self.view.context, self.target)
        return False


class AddStudyLevelActionButton(AddActionButton):
    grok.order(1)
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseDisplayFormPage)
    grok.require('waeup.handleStudent')
    text = _('Add course list')
    target = 'add'

    @property
    def target_url(self):
        student = self.view.context.student
        condition1 = student.state != PAID
        condition2 = str(student['studycourse'].current_level) in \
            self.view.context.keys()
        condition3 = not self.context.is_current
        if condition1 or condition2 or condition3:
            return ''
        return self.view.url(self.view.context, self.target)


class StudyLevelEditActionButton(ManageActionButton):
    grok.order(2)
    grok.context(IStudentStudyLevel)
    grok.view(StudyLevelDisplayFormPage)
    grok.require('waeup.editStudyLevel')
    text = _('Edit course list')
    target = 'edit'

    @property
    def target_url(self):
        student = self.view.context.student
        condition1 = student.state == PAID
        condition2 = self.view.context.is_current_level
        is_current = self.context.__parent__.is_current
        if condition1 and condition2 and is_current:
            return self.view.url(self.view.context, self.target)
        return ''


class AddPaymentActionButton(AddActionButton):
    grok.order(1)
    grok.context(IStudentPaymentsContainer)
    grok.view(PaymentsManageFormPage)
    grok.require('waeup.payStudent')
    text = _('Add current session payment ticket')
    target = 'addop'


class AddPreviousPaymentActionButton(AddActionButton):
    grok.order(2)
    grok.context(IStudentPaymentsContainer)
    grok.view(PaymentsManageFormPage)
    grok.require('waeup.payStudent')
    grok.name('addpreviouspaymentactionbutton')
    text = _('Add previous session payment ticket')
    target = 'addpp'

    @property
    def target_url(self):
        student = self.view.context.student
        if student.before_payment or not self.target:
            return ''
        return self.view.url(self.view.context, self.target)


class AddBalancePaymentActionButton(AddActionButton):
    grok.order(3)
    grok.context(IStudentPaymentsContainer)
    grok.view(PaymentsManageFormPage)
    grok.require('waeup.manageStudent')
    grok.name('addbalancepaymentactionbutton')
    text = _('Add balance payment ticket')
    target = 'addbp'

    @property
    def target_url(self):
        if not self.target:
            return ''
        return self.view.url(self.view.context, self.target)


class StudyCourseTranscriptActionButton(ManageActionButton):
    grok.order(2)
    grok.name('transcript')
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseDisplayFormPage)
    grok.require('waeup.viewTranscript')
    text = _('Transcript')
    target = 'transcript'
    icon = 'actionicon_transcript.png'

    @property
    def target_url(self):
        final_slip = getUtility(IExtFileStore).getFileByContext(
            self.context.student, attr='final_transcript')
        if self.context.student.transcript_enabled and not final_slip:
            return self.view.url(self.view.context, self.target)
        return False


class RequestTranscriptActionButton(ManageActionButton):
    grok.order(8)
    grok.context(IStudent)
    grok.view(StudentBaseDisplayFormPage)
    grok.require('waeup.handleStudent')
    text = _('Request transcript')
    target = 'request_transcript'
    icon = 'actionicon_transcript.png'

    @property
    def target_url(self):
        if self.context.state != GRADUATED:
            return ''
        return self.view.url(self.view.context, self.target)

class TORequestTranscriptActionButton(RequestTranscriptActionButton):
    grok.require('waeup.processTranscript')
    text = _('Request transcript for student')
    target = 'request_transcript_for_student'


class ValidateTranscriptActionButton(ManageActionButton):
    grok.order(8)
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseTranscriptPage)
    grok.require('waeup.processTranscript')
    text = _('Validate transcript')
    target = 'validate_transcript'
    icon = 'actionicon_transcript.png'

    @property
    def target_url(self):
        if self.context.student.state != TRANSREQ:
            return ''
        return self.view.url(self.view.context, self.target)


class ReleaseTranscriptActionButton(ManageActionButton):
    grok.order(8)
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseTranscriptPage)
    grok.require('waeup.processTranscript')
    text = _('Release transcript')
    target = 'release_transcript'
    icon = 'actionicon_transcript.png'

    @property
    def target_url(self):
        if self.context.student.state != TRANSVAL:
            return ''
        return self.view.url(self.view.context, self.target)


class TranscriptSlipActionButton(ManageActionButton):
    grok.order(1)
    grok.name('transcript_slip')
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseTranscriptPage)
    grok.require('waeup.downloadTranscript')
    text = _('Academic Transcript')
    target = 'transcript.pdf'
    icon = 'actionicon_pdf.png'

    @property
    def target_url(self):
        final_slip = getUtility(IExtFileStore).getFileByContext(
            self.context.student, attr='final_transcript')
        if self.context.student.transcript_enabled \
            and not final_slip:
            return self.view.url(self.view.context, self.target)
        return False


class SignTranscriptActionButton(ManageActionButton):
    grok.order(2)
    grok.context(IStudentStudyCourse)
    grok.view(StudyCourseTranscriptPage)
    grok.require('waeup.signTranscript')
    text = _('Sign transcript electronically')
    target = 'sign_transcript'
    icon = 'actionicon_transcript.png'

    @property
    def target_url(self):
        if self.context.student.state != TRANSVAL:
            return ''
        return self.view.url(self.view.context, self.target)

    @property
    def onclick(self):
        return "return window.confirm(%s);" % _(
            "'Signing a transcript electronically cannot be revoked. "
            "The electronic signature replaces your handwritten signature.\\n\\n"
            "You really want to sign the transcript?'")


class StudentsTab(PrimaryNavTab):
    """Students tab in primary navigation.
    """
    grok.context(IKofaObject)
    grok.order(4)
    grok.require('waeup.viewStudentsContainer')
    grok.name('studentstab')

    pnav = 4
    tab_title = _(u'Students')

    @property
    def link_target(self):
        return self.view.application_url('students')


class PrimaryStudentNavManager(grok.ViewletManager):
    """Viewlet manager for the primary navigation tab.
    """
    grok.name('primary_nav_student')


class PrimaryStudentNavTab(grok.Viewlet):
    """Base for primary student nav tabs.
    """
    grok.baseclass()
    grok.context(IKofaObject)
    grok.viewletmanager(PrimaryStudentNavManager)
    template = default_primary_nav_template
    grok.order(1)
    grok.require('waeup.Authenticated')
    pnav = 0
    tab_title = u'Some Text'

    @property
    def link_target(self):
        return self.view.application_url()

    @property
    def active(self):
        view_pnav = getattr(self.view, 'pnav', 0)
        if view_pnav == self.pnav:
            return 'active'
        return ''


class MyStudentDataTab(PrimaryStudentNavTab):
    """MyData dropdown tab in primary navigation.
    """
    grok.order(3)
    grok.require('waeup.viewMyStudentDataTab')
    grok.template('mydatadropdowntabs')
    grok.name('mystudentdatatab')
    pnav = 4
    tab_title = _(u'My Data')

    @property
    def active(self):
        view_pnav = getattr(self.view, 'pnav', 0)
        if view_pnav == self.pnav:
            return 'active dropdown'
        return 'dropdown'

    @property
    def targets(self):
        student = grok.getSite()['students'][self.request.principal.id]
        student_url = self.view.url(student)
        app_slip = getUtility(IExtFileStore).getFileByContext(
            student, 'application_slip')
        targets = []
        if student.getParentsPassword():
            targets += [
                {'url': student_url, 'title': 'Base Data'},
                {'url': student_url + '/studycourse', 'title': _('Study Course')},
                {'url': student_url + '/payments', 'title': _('Payments')},
                ]
            return targets
        if app_slip:
            targets = [{'url': student_url + '/application_slip',
                        'title': _('Application Slip')}, ]
        targets += [
            {'url': student_url, 'title': 'Base Data'},
            {'url': student_url + '/view_clearance',
             'title': _('Clearance Data')},
            {'url': student_url + '/view_personal',
             'title': _('Personal Data')},
            {'url': student_url + '/studycourse', 'title': _('Study Course')},
            {'url': student_url + '/payments', 'title': _('Payments')},
            {'url': student_url + '/accommodation',
             'title': _('Accommodation Data')},
            {'url': student_url + '/history', 'title': _('History')},
            ]
        return targets