#!/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 Documents.

"""

__authors__ = [

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

    '"Lennard de Rijk" <ljvderijk@gmail.com>',

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

  ]

from google.appengine.api import users

from django import forms

from soc.logic import dicts

from soc.logic import validate

from soc.logic.models import user as user_logic

from soc.views import helper

from soc.views.helper import access

from soc.views.helper import redirects

from soc.views.models import base

import soc.models.document

import soc.logic.models.document

import soc.logic.dicts

import soc.views.helper

import soc.views.helper.widgets

class CreateForm(helper.forms.BaseForm):

  """Django form displayed when Developer creates a Document.

  """

  content = forms.fields.CharField(widget=helper.widgets.TinyMCE(

      attrs={'rows':10, 'cols':40}))

  class Meta:

    """Inner Meta class that defines some behavior for the form.

    """

    model = soc.models.document.Document

    #: list of model fields which will *not* be gathered by the form

    exclude = ['author', 'created', 'modified_by', 'modified', 'scope']

  def clean_scope_path(self):

    scope_path = self.cleaned_data.get('scope_path')

    # TODO(tlarsen): combine path and link_id and check for uniqueness

    if not validate.isScopePathFormatValid(scope_path):

      raise forms.ValidationError("This scope path is in wrong format.")

    return scope_path

  def clean_link_id(self):

    link_id = self.cleaned_data.get('link_id').lower()

    # TODO(tlarsen): combine path and link_id and check for uniqueness

    if not validate.isLinkIdFormatValid(link_id):

      raise forms.ValidationError("This link ID is in wrong format.")

    return link_id

class EditForm(CreateForm):

  """Django form displayed a Document is edited.

  """

  doc_key_name = forms.fields.CharField(widget=forms.HiddenInput)

  created_by = forms.fields.CharField(widget=helper.widgets.ReadOnlyInput(),

                                      required=False)

  last_modified_by = forms.fields.CharField(

      widget=helper.widgets.ReadOnlyInput(), required=False)

class View(base.View):

  """View methods for the Document 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['any_access'] = ['allow']

    rights['show'] = ['checkIsDocumentPublic']

    new_params = {}

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

    new_params['rights'] = rights

    new_params['export_content_type'] = 'text/text'

    new_params['name'] = "Document"

    new_params['edit_form'] = EditForm

    new_params['create_form'] = CreateForm

    params = dicts.merge(params, new_params)

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

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

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

    """

    account = users.get_current_user()

    user = user_logic.logic.getForFields({'account': account}, unique=True)

    if not entity:

      fields['author'] = user

    else:

      fields['author'] = entity.author

    fields['modified_by'] = user

    super(View, self)._editPost(request, entity, fields)

  def _editGet(self, request, entity, form):

    """See base.View._editGet().

    """

    form.fields['created_by'].initial = entity.author.name

    form.fields['last_modified_by'].initial = entity.modified_by.name

    form.fields['doc_key_name'].initial = entity.key().name()

    super(View, self)._editGet(request, entity, form)

  def getMenusForScope(self, entity, params):

    """Returns the featured menu items for one specifc entity.

    A link to the home page of the specified entity is also included.

    Args:

      entity: the entity for which the entry should be constructed

      params: a dict with params for this View.

    """

    filter = {

        'scope_path': entity.key().name(),

        'is_featured': True,

        }

    entities = self._logic.getForFields(filter)

    submenus = []

    # add a link to the home page

    submenu = (redirects.getHomeRedirect(entity, params), "Home", 'show')

    submenus.append(submenu)

    # add a link to all featured documents

    for entity in entities:

      submenu = (redirects.getPublicRedirect(entity, self._params),

                 entity.short_name, 'show')

      submenus.append(submenu)

    return submenus

view = View()

create = view.create

edit = view.edit

delete = view.delete

list = view.list

public = view.public

export = view.export

pick = view.pick