apps/catalogue/forms.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from django import forms
   6 from django.utils.translation import ugettext_lazy as _
   7
   8 from catalogue.models import Book
   9 from waiter.models import WaitedFile
  10 from django.core.exceptions import ValidationError
  11 from catalogue.utils import get_customized_pdf_path
  12 from catalogue.tasks import build_custom_pdf
  13
  14
  15 class BookImportForm(forms.Form):
  16     book_xml_file = forms.FileField(required=False)
  17     book_xml = forms.CharField(required=False)
  18
  19     def clean(self):
  20         from django.core.files.base import ContentFile
  21
  22         if not self.cleaned_data['book_xml_file']:
  23             if self.cleaned_data['book_xml']:
  24                 self.cleaned_data['book_xml_file'] = \
  25                         ContentFile(self.cleaned_data['book_xml'].encode('utf-8'))
  26             else:
  27                 raise forms.ValidationError(_("Please supply an XML."))
  28         return super(BookImportForm, self).clean()
  29
  30     def save(self, commit=True, **kwargs):
  31         return Book.from_xml_file(self.cleaned_data['book_xml_file'], overwrite=True, **kwargs)
  32
  33
  34 FORMATS = [(f, f.upper()) for f in Book.ebook_formats]
  35
  36
  37 class DownloadFormatsForm(forms.Form):
  38     formats = forms.MultipleChoiceField(required=False, choices=FORMATS,
  39             widget=forms.CheckboxSelectMultiple)
  40
  41     def __init__(self, *args, **kwargs):
  42         super(DownloadFormatsForm, self).__init__(*args, **kwargs)
  43
  44
  45 CUSTOMIZATION_FLAGS = (
  46     ('nofootnotes', _("Don't show footnotes")),
  47     ('nothemes', _("Don't disply themes")),
  48     ('nowlfont', _("Don't use our custom font")),
  49     )
  50 CUSTOMIZATION_OPTIONS = (
  51     ('leading', _("Leading"), (
  52         ('', _('Normal leading')),
  53         ('onehalfleading', _('One and a half leading')),
  54         ('doubleleading', _('Double leading')),
  55         )),
  56     ('fontsize', _("Font size"), (
  57         ('', _('Default')),
  58         ('13pt', _('Big'))
  59         )),
  60 #    ('pagesize', _("Paper size"), (
  61 #        ('a4paper', _('A4')),
  62 #        ('a5paper', _('A5')),
  63 #        )),
  64     )
  65
  66
  67 class CustomPDFForm(forms.Form):
  68     def __init__(self, book, *args, **kwargs):
  69         super(CustomPDFForm, self).__init__(*args, **kwargs)
  70         self.book = book
  71         for name, label in CUSTOMIZATION_FLAGS:
  72             self.fields[name] = forms.BooleanField(required=False, label=label)
  73         for name, label, choices in CUSTOMIZATION_OPTIONS:
  74             self.fields[name] = forms.ChoiceField(choices, required=False, label=label)
  75
  76     def clean(self):
  77         self.cleaned_data['cust'] = self.customizations
  78         self.cleaned_data['path'] = get_customized_pdf_path(self.book,
  79             self.cleaned_data['cust'])
  80         if not WaitedFile.can_order(self.cleaned_data['path']):
  81             raise ValidationError(_('Queue is full. Please try again later.'))
  82         return self.cleaned_data
  83
  84     @property
  85     def customizations(self):
  86         c = []
  87         for name, label in CUSTOMIZATION_FLAGS:
  88             if self.cleaned_data.get(name):
  89                 c.append(name)
  90         for name, label, choices in CUSTOMIZATION_OPTIONS:
  91             option = self.cleaned_data.get(name)
  92             if option:
  93                 c.append(option)
  94         c.sort()
  95         return c
  96
  97     def save(self, *args, **kwargs):
  98         if not self.cleaned_data['cust'] and self.book.pdf_file:
  99             # Don't build with default options, just redirect to the standard file.
 100             return {"redirect": self.book.pdf_file.url}
 101         url = WaitedFile.order(self.cleaned_data['path'],
 102             lambda p: build_custom_pdf.delay(self.book.id,
 103                 self.cleaned_data['cust'], p),
 104             self.book.pretty_title()
 105             )
 106         #return redirect(url)
 107         return {"redirect": url}