django-orchestra/orchestra/forms/widgets.py

74 lines
2.8 KiB
Python

import re
import textwrap
from django import forms
from django.utils.safestring import mark_safe
from django.contrib.admin.templatetags.admin_static import static
class SpanWidget(forms.Widget):
"""
Renders a value wrapped in a <span> tag.
Requires use of specific form support. (see ReadonlyForm or ReadonlyModelForm)
"""
def __init__(self, *args, **kwargs):
self.tag = kwargs.pop('tag', '<span>')
self.original = kwargs.pop('original', '')
self.display = kwargs.pop('display', None)
super(SpanWidget, self).__init__(*args, **kwargs)
def render(self, name, value, attrs=None, renderer=None):
final_attrs = self.build_attrs(attrs, extra_attrs={'name':name})
original = self.original or value
display = original if self.display is None else self.display
# Display icon
if isinstance(original, bool):
icon = static('admin/img/icon-%s.svg' % ('yes' if original else 'no',))
return mark_safe('<img src="%s" alt="%s">' % (icon, display))
tag = self.tag[:-1]
endtag = '/'.join((self.tag[0], self.tag[1:]))
return mark_safe('%s%s >%s%s' % (tag, forms.utils.flatatt(final_attrs), display, endtag))
def value_from_datadict(self, data, files, name):
return self.original
def _has_changed(self, initial, data):
return False
class PaddingCheckboxSelectMultiple(forms.CheckboxSelectMultiple):
""" Ugly hack to render this widget nicely on Django admin """
def __init__(self, padding, attrs=None, choices=()):
super().__init__(attrs=attrs, choices=choices)
self.padding = padding
def render(self, *args, **kwargs):
value = super().render(*args, **kwargs)
value = re.sub(r'^<ul id=([^>]+)>',
r'<ul id=\1 style="padding-left:%ipx">' % self.padding, value, 1)
return mark_safe(value)
class DynamicHelpTextSelect(forms.Select):
def __init__(self, target, help_text, *args, **kwargs):
help_text = self.get_dynamic_help_text(target, help_text)
attrs = kwargs.get('attrs', {})
attrs.update({
'onClick': help_text,
'onChange': help_text,
})
attrs.update(kwargs.get('attrs', {}))
kwargs['attrs'] = attrs
super(DynamicHelpTextSelect, self).__init__(*args, **kwargs)
def get_dynamic_help_text(self, target, help_text):
return textwrap.dedent("""\
siteoptions = {help_text};
valueelement = $("#" + {target});
help_text = siteoptions[this.options[this.selectedIndex].value] || ""
valueelement.parent().find('p').remove();
valueelement.parent().append("<p class='help'>" + help_text + "</p>");\
""".format(target=target, help_text=str(help_text))
)