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from django import forms
from django.forms.widgets import TextInput
from django.core.files.uploadedfile import UploadedFile
from django.utils.safestring import mark_safe
from django.template import loader
import base64
import datetime
import json
class HtmlDateInput(TextInput):
def __init__(self, *args, **kwargs):
kwargs.update({'attrs': {'type': 'date', 'required-pattern': '[0-9]{4}-[0-9]{2}-[0-9]{2}'}})
super(HtmlDateInput, self).__init__(*args, **kwargs)
def format_value(self, val):
if isinstance(val, datetime.datetime):
val = val.date()
return super(HtmlDateInput, self).format_value(val)
class RequiredFileUploadWidget(forms.FileInput):
def __init__(self, filename=None, attrs=None):
self.filename = filename
super(RequiredFileUploadWidget, self).__init__(attrs)
def render(self, name, value, attrs=None):
output = []
if value and hasattr(value, 'url'):
output.append('Current file: <a href="{0}">'.format(value.url))
if self.filename:
output.append(self.filename)
else:
output.append(value.name)
output.append('</a><br/>')
output.append("Upload new file: ")
output.append(super(RequiredFileUploadWidget, self).render(name, value, attrs))
return mark_safe(''.join(output))
class PrettyPrintJsonWidget(forms.Textarea):
def render(self, name, value, attrs=None, renderer=None):
# This is mighty ugly -- we parse the json and then turn it back into json.
# Luckily this isn't called often :)
try:
if value is not None:
if isinstance(value, dict):
# Already a dict, so just turn it into json
value = json.dumps(value, indent=2)
else:
value = json.dumps(json.loads(value), indent=2)
except ValueError:
# Don't try to do anything if it's not valid json
pass
t = super(PrettyPrintJsonWidget, self).render(name, value, attrs, renderer)
return t
class MonospaceTextarea(forms.Textarea):
def render(self, name, value, attrs=None, renderer=None):
attrs['class'] = "{0} text-monospace".format(attrs.get('class', ''))
return super(MonospaceTextarea, self).render(name, value, attrs, renderer)
class TagOptionsTextWidget(forms.Textarea):
def __init__(self, taglist, *args, **kwargs):
self.taglist = taglist
super(TagOptionsTextWidget, self).__init__(*args, **kwargs)
def render(self, name, value, attrs=None, renderer=None):
t = super(TagOptionsTextWidget, self).render(name, value, attrs, renderer)
return t + mark_safe('<div class="textarea-tagoptions-list" data-areaid="{}">Suggested tags: {}</div>'.format(
attrs['id'],
"".join(('<span class="label label-success tagoption">{}</span>'.format(t) for t in self.taglist))
))
class EmailTextWidget(forms.Textarea):
def render(self, name, value, attrs=None, renderer=None):
attrs.update({
"cols": "72",
"class": "{0} textarea-mail".format(attrs.get('class', '')),
})
t = super(EmailTextWidget, self).render(name, value, attrs, renderer)
return mark_safe('<div class="textarea-mail-prefix">This text area is initially sized to the correct width of an email!</div>') + t
class InlineImageUploadWidget(forms.ClearableFileInput):
clear_checkbox_label = "Remove image"
def render(self, name, value, attrs=None, renderer=None):
context = self.get_context(name, value, attrs)
if value and not isinstance(value, UploadedFile):
context['widget']['value'] = base64.b64encode(value).decode('ascii')
context['widget']['imagetype'] = 'image/png' if bytes(value[:8]) == b'\x89\x50\x4E\x47\x0D\x0A\x1A\x0A' else 'image/jpg'
return mark_safe(loader.render_to_string('confreg/widgets/inline_photo_upload_widget.html', context))
class InlinePdfUploadWidget(forms.ClearableFileInput):
clear_checkbox_label = "Remove PDF"
def render(self, name, value, attrs=None, renderer=None):
context = self.get_context(name, value, attrs)
if value and not isinstance(value, UploadedFile) and type(value) != object:
context['widget']['value'] = base64.b64encode(value).decode('ascii')
return mark_safe(loader.render_to_string('confreg/widgets/inline_pdf_upload_widget.html', context))
class AdminJsonWidget(PrettyPrintJsonWidget):
def render(self, name, value, attrs=None, renderer=None):
attrs['cols'] = 100
return super(AdminJsonWidget, self).render(name, value, attrs, renderer)
class StaticTextWidget(TextInput):
def __init__(self, *args, **kwargs):
self.monospace = kwargs.pop('monospace', False)
super(StaticTextWidget, self).__init__(*args, **kwargs)
def render(self, name, value, attrs=None, renderer=None):
if self.monospace:
return mark_safe('<div class="text-monospace">{0}</div>'.format(value))
else:
return mark_safe(value)
class SimpleTreeviewWidget(TextInput):
template_name = 'forms/widgets/treeview_widget.html'
def __init__(self, *args, **kwargs):
self.treedata = dict(kwargs.pop('treedata'))
super().__init__(*args, **kwargs)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context['treedata'] = self.treedata
return context
class StaticHtmlPreviewWidget(TextInput):
template_name = 'forms/widgets/static_html_preview_widget.html'
def get_context(self, name, value, attrs):
d = super().get_context(name, value, attrs)
d['base64content'] = base64.b64encode(d['widget']['value'].encode()).decode('ascii')
return d
class TestButtonWidget(TextInput):
template_name = 'forms/widgets/test_button_widget.html'
class Bootstrap4CheckboxSelectMultiple(forms.CheckboxSelectMultiple):
template_name = 'forms/widgets/bs4_checkbox_select.html'
class Bootstrap4HtmlDateTimeInput(forms.DateTimeInput):
template_name = 'forms/widgets/bs4_datetime_input.html'
class LinkForCodeWidget(TextInput):
template_name = 'forms/widgets/linkforcode_widget.html'
def get_context(self, name, value, attrs):
d = super().get_context(name, value, attrs)
d['authurl'] = self.authurl
return d
class SubmitButtonWidget(forms.Widget):
template_name = 'forms/widgets/submitbutton_widget.html'
def get_context(self, name, value, attrs):
d = super().get_context(name, value, attrs)
d['label'] = self.label
d['prefixparagraph'] = self.prefixparagraph
return d
class SelectSetValueWidget(forms.Select):
option_template_name = 'forms/widgets/select_set_value_option.html'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
def get_context(self, name, value, attrs):
attrs['data-set-form-field'] = 'id_{}'.format(self.setvaluefield)
context = super().get_context(name, value, attrs)
context['setmap'] = self.setvalues
return context
class CallForPapersSpeakersWidget(forms.SelectMultiple):
template_name = 'forms/widgets/speaker_select.html'
def __init__(self, conference, *args, **kwargs):
self.conference = conference
super().__init__(*args, **kwargs)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context['widget']['options'] = list(self.options(name, context['widget']['value'], attrs))
context['confurlname'] = self.conference.urlname
return context
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