Synnefo

# Copyright 2011-2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

from django.utils.translation import ugettext as _

from django.utils.safestring import mark_safe

from django.template import Context, Template

from django.template.loader import render_to_string

from django_tables2 import A

import django_tables2 as tables

from astakos.im.models import *

DEFAULT_DATE_FORMAT = "d/m/Y"

MEMBER_STATUS_DISPLAY = {

    100: _('Owner'),

      0: _('Requested'),

      1: _('Pending'),

      2: _('Accepted'),

      3: _('Removing'),

      4: _('Removed'),

     -1: _('Unregistered'),

}

# Helper columns

class RichLinkColumn(tables.TemplateColumn):

    method = 'POST'

    confirm_prompt = _('Yes')

    cancel_prompt = _('No')

    confirm = True

    prompt = _('Confirm action ?')

    action_tpl = None

    action = _('Action')

    extra_context = lambda record, table, column: {}

    url = None

    url_args = ()

    resolve_func = None

    def __init__(self, *args, **kwargs):

        kwargs['template_name'] = kwargs.get('template_name',

                                             'im/table_rich_link_column.html')

        for attr in ['method', 'confirm_prompt',

                     'cancel_prompt', 'prompt', 'url',

                     'url_args', 'action', 'confirm',

                     'resolve_func', 'extra_context']:

            setattr(self, attr, kwargs.pop(attr, getattr(self, attr)))

        super(RichLinkColumn, self).__init__(*args, **kwargs)

    def render(self, record, table, value, bound_column, **kwargs):

        # If the table is being rendered using `render_table`, it hackily

        # attaches the context to the table as a gift to `TemplateColumn`. If

        # the table is being rendered via `Table.as_html`, this won't exist.

        context = getattr(table, 'context', Context())

        context.update(self.get_template_context(record, table, value,

                                                 bound_column, **kwargs))

        try:

            if self.template_code:

                return Template(self.template_code).render(context)

            else:

                return render_to_string(self.template_name, context)

        finally:

            context.pop()

    def get_confirm(self, record, table):

        if callable(self.confirm):

            return self.confirm(record, table)

        return self.confirm

    def resolved_url(self, record, table):

        if callable(self.url):

            return self.url(record, table)

        if not self.url:

            return '#'

        args = list(self.url_args)

        for index, arg in enumerate(args):

            if isinstance(arg, A):

                args[index] = arg.resolve(record)

        return reverse(self.url, args=args)

    def get_action(self, record, table):

        if callable(self.action):

            return self.action(record, table)

        return self.action

    def get_prompt(self, record, table):

        if callable(self.prompt):

            return self.prompt(record, table)

        return self.prompt

    def get_template_context(self, record, table, value, bound_column, **kwargs):

        context = {'default': bound_column.default,

                   'record': record,

                   'value': value,

                   'col': self,

                   'url': self.resolved_url(record, table),

                   'prompt': self.get_prompt(record, table),

                   'action': self.get_action(record, table),

                   'confirm': self.get_confirm(record, table)

                  }

        if self.extra_context:

            context.update(self.extra_context(record, table, self))

        return context

def action_extra_context(project, table, self):

    user = table.user

    url, action, confirm, prompt = '', '', True, ''

    append_url = ''

    if user.owns_project(project):

        url = 'astakos.im.views.project_update'

        action = _('Update')

        confirm = False

        prompt = ''

    elif user.is_project_member(project):

        url = 'astakos.im.views.project_leave'

        action = _('- Leave')

        confirm = True

        prompt = _('Are you sure you want to leave from the project ?')

    else:

        url = 'astakos.im.views.project_join'

        action = _('+ Join')

        confirm = True

        prompt = _('Are you sure you want to join this project ?')

    return {'action': action, 'confirm': confirm,

            'url': reverse(url, args=(project.pk, )) + append_url,

            'prompt': prompt}

# Table classes

class UserProjectApplicationsTable(tables.Table):

    def __init__(self, *args, **kwargs):

        self.user = None

        if 'request' in kwargs and kwargs.get('request').user:

            self.user = kwargs.get('request').user

        if 'user' in kwargs:

            self.user = kwargs.pop('user')

        super(UserProjectApplicationsTable, self).__init__(*args, **kwargs)

    name = tables.LinkColumn('astakos.im.views.project_detail', args=(A('pk'),))

    issue_date = tables.DateColumn(format=DEFAULT_DATE_FORMAT)

    start_date = tables.DateColumn(format=DEFAULT_DATE_FORMAT)

    state = tables.Column(verbose_name="Status")

    members_count = tables.Column(verbose_name=_("Enrolled"), default=0,

                                  sortable=False)

    membership_status = tables.Column(verbose_name=_("My status"), empty_values=(),

                                      orderable=False)

    project_action = RichLinkColumn(verbose_name=_('Action'),

                                    extra_context=action_extra_context,

                                    sortable=False)

    def render_membership_status(self, *args, **kwargs):

        return MEMBER_STATUS_DISPLAY.get(kwargs.get('record').user_status(self.user))

    class Meta:

        model = ProjectApplication

        fields = ('name', 'membership_status', 'issue_date', 'start_date',

                  'state', 'members_count')

        attrs = {'id': 'projects-list', 'class': 'my-projects alt-style'}

        caption = _('My projects')

        template = "im/table_render.html"

class ProjectApplicationMembersTable(tables.Table):

    name = tables.Column(accessor="person.last_name", verbose_name=_('Name'))

    status = tables.Column(accessor="state", verbose_name=_('Status'))

    def render_name(self, value, record, *args, **kwargs):

        return record.person.realname

    def render_status(self, value, *args, **kwargs):

        return MEMBER_STATUS_DISPLAY.get(value, 'Unknown')

    class Meta:

        template = "im/table_render.html"

        model = ProjectMembership

        fields = ('name', 'status')

        attrs = {'id': 'members-table', 'class': 'members-table alt-style'}