#!/usr/bin/python2.5

#

# Copyright 2008 the Melange authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#   http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""Views for Timeline.

"""

__authors__ = [

    '"Sverre Rabbelier" <sverre@rabbelier.nl>',

    '"Pawel Solyga" <pawel.solyga@gmail.com>',

  ]

from google.appengine.ext import db

from django import forms

from soc.logic import dicts

from soc.logic.models import program as program_logic

from soc.views.helper import access

from soc.views.helper import dynaform

from soc.views.helper import params as params_helper

from soc.views.models import base

import soc.logic.models.timeline

class View(base.View):

  """View methods for the Timeline model.

  """

  def __init__(self, params=None):

    """Defines the fields and methods required for the base View class

    to provide the user with list, public, create, edit and delete views.

    Params:

      params: a dict with params for this View

    """

    rights = access.Checker(params)

    rights['edit'] = ['checkCanEditTimeline']

    new_params = {}

    new_params['rights'] = rights

    new_params['logic'] = soc.logic.models.timeline.logic

    new_params['edit_template'] = 'soc/timeline/edit.html'

    new_params['name'] = "Timeline"

    patterns = [(r'^%(url_name)s/(?P<access_type>edit)/%(key_fields)s$',

                  'soc.views.models.%(module_name)s.edit', 

                  "Edit %(name_short)s")]

    new_params['django_patterns_defaults'] = patterns

    new_params['edit_dynafields'] = []

    params = dicts.merge(params, new_params)

    super(View, self).__init__(params=params)

    for name, logic_value in program_logic.logic.TIMELINE_LOGIC.iteritems():

      fields = {}

      # add class 'datetime-pick' for each DateTimeField

      # this is used with datetimepicker js widget

      for prop_key, prop_value in logic_value.getModel().properties().iteritems():

        if isinstance(prop_value, db.DateTimeProperty):

          fields[prop_key] = forms.DateTimeField(required=False,

            widget=forms.TextInput(attrs={'class':'datetime-pick'}))

      create_form = params_helper.getCreateForm(self._params, logic_value.getModel())

      edit_form = dynaform.extendDynaForm(

        dynaform = create_form,

        dynainclude = self._params['edit_dynainclude'],

        dynaexclude = self._params['edit_dynaexclude'],

        dynafields = fields,

        )

      self._params['edit_form_%s' % name] = edit_form

  def edit(self, request, access_type,

           page_name=None, params=None, seed=None, **kwargs):

    """See base.View.edit.

    """

    params = dicts.merge(params, self._params)

    # TODO(pawel.solyga): If program doesn't exist for timeline display

    # customized error message without pointing to 'Create Timeline'

    program = program_logic.logic.getFromKeyName(kwargs['scope_path'])

    if program:

      params['edit_form'] = params["edit_form_%s" % program.workflow]

    return super(View, self).edit(request, access_type, page_name=page_name,

                                  params=params, seed=seed, **kwargs)

  def _editPost(self, request, entity, fields):

    """See base.View._editPost().

    """

    # a timeline can only be edited, so set the scope path using entity

    fields['scope_path'] = entity.scope_path

view = View()

create = view.create

delete = view.delete

edit = view.edit

list = view.list

public = view.public

export = view.export