neue Verzeichnissstruktur
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Christian Berg
318
utils/html5/widgets.py
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318
utils/html5/widgets.py
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'''
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Created on 08.05.2011
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@author: christian
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'''
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from django.conf import settings
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from django.forms import widgets
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from django.forms.util import flatatt
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from django.utils import formats
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from django.utils.encoding import force_unicode, force_text
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from django.utils.html import conditional_escape
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from django.utils.http import urlencode
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from django.utils.safestring import mark_safe
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class AutoCompleteWidget(widgets.TextInput):
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def __init__(self, lookup_class, attrs=None, *args, **kwargs):
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self.lookup_class = lookup_class
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self.allow_new = kwargs.pop('allow_new', False)
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self.qs = {}
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super(AutoCompleteWidget, self).__init__(*args, **kwargs)
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if attrs is not None:
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self.attrs = attrs.copy()
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else:
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self.attrs = {}
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def update_query_parameters(self, qs_dict):
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self.qs.update(qs_dict)
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def build_attrs(self, extra_attrs=None, **kwargs):
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attrs = super(AutoCompleteWidget, self).build_attrs(extra_attrs, **kwargs) # @IgnorePep8
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url = self.lookup_class.url()
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if self.qs:
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url = '%s?%s' % (url, urlencode(self.qs))
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attrs[u'data-selectable-url'] = url
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attrs[u'data-selectable-type'] = 'text'
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attrs[u'data-selectable-allow-new'] = str(self.allow_new).lower()
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return attrs
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class AutoComboboxWidget(AutoCompleteWidget):
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def build_attrs(self, extra_attrs=None, **kwargs):
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attrs = super(AutoComboboxWidget, self).build_attrs(extra_attrs, **kwargs) # @IgnorePep8
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attrs[u'data-selectable-type'] = 'combobox'
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return attrs
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class DateInput(widgets.DateInput):
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input_type = 'date'
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attrs = {'class': 'dateinput'}
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def __init__(self, attrs=None, date_format='%Y-%m-%d'):
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super(DateInput, self).__init__(attrs)
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if date_format:
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self.format = date_format
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self.manual_format = True
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else:
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self.format = formats.get_format('DATE_INPUT_FORMATS')[0]
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self.manual_format = False
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class DateTimeInput(widgets.MultiWidget):
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"""
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A Widget that splits datetime input into two <input type="text"> boxes.
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"""
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def __init__(self, attrs=None, date_format='%Y-%m-%d', time_format='%H:%M'): # @IgnorePep8
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widgets = (
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DateInput(attrs=attrs, date_format=date_format),
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TimeInput(attrs=attrs, time_format=time_format)
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)
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super(DateTimeInput, self).__init__(widgets, attrs)
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def decompress(self, value):
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if value:
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return [value.date(), value.time()]
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return [None, None]
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class CheckboxInput(widgets.CheckboxInput):
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input_type = 'checkbox'
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is_checkbox = True
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def render(self, name, value, attrs=None):
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final_attrs = self.build_attrs(attrs, type='checkbox', name=name)
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title = force_text(self.attrs.get('title', ''))
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try:
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result = self.check_test(value)
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except: # Silently catch exceptions
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result = False
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if result:
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final_attrs['checked'] = 'checked'
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if not (value is True or value is False or value is None or value == ''): # @IgnorePep8
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# Only add the 'value' attribute if a value is non-empty.
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final_attrs['value'] = force_unicode(value)
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return mark_safe(u'<input%s /> %s' % (flatatt(final_attrs), title))
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class EmailInput(widgets.TextInput):
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input_type = 'email'
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class NumberInput(widgets.TextInput):
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input_type = 'number'
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def __init__(self, attrs=None):
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widgets.Input.__init__(self, attrs=attrs)
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class PhoneInput(widgets.TextInput):
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input_type = 'tel'
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class RangeInput(widgets.TextInput):
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input_type = 'range'
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class ReCaptchaInput(widgets.Widget):
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'''
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Der HTML Code von Googles ReCaptcha als Form Widget
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'''
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recaptcha_challenge_name = 'recaptcha_challenge_field'
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recaptcha_response_name = 'recaptcha_response_field'
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def render(self, name, value, attrs=None):
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javascript = u"""
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<script type="text/javascript">var RecaptchaOptions = {theme :
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'%(theme)s'};</script><script type="text/javascript"
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src="https://www.google.com/recaptcha/api/challenge?k=%(public_key)s">
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</script><noscript><iframe
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src="https://www.google.com/recaptcha/api/noscript?k=%(public_key)s"
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height="300" width="500" frameborder="0"></iframe><br /><textarea
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name="recaptcha_challenge_field" rows="3" cols="40"></textarea><input
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type="hidden" name="recaptcha_response_field" value="manual_challenge">
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</noscript>"""
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return mark_safe(javascript % {'public_key':
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settings.RECAPTCHA_PUBLIC_KEY, 'theme': 'red'})
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def value_from_datadict(self, data, files, name):
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return [data.get(self.recaptcha_challenge_name, None),
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data.get(self.recaptcha_response_name, None)]
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class SelectableMultiWidget(widgets.MultiWidget):
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def update_query_parameters(self, qs_dict):
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self.widgets[0].update_query_parameters(qs_dict)
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class Textarea(widgets.Widget):
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def __init__(self, attrs=None):
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# The 'rows' and 'cols' attributes are required for HTML correctness.
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default_attrs = {'cols': '40', 'rows': '10'}
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if attrs:
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default_attrs.update(attrs)
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super(Textarea, self).__init__(default_attrs)
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def render(self, name, value, attrs=None):
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value = '' if value is None else value
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final_attrs = self.build_attrs(attrs, name=name)
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return mark_safe(u'<textarea%s>%s</textarea>' % (flatatt(final_attrs),
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conditional_escape(force_unicode(value))))
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class TextInput(widgets.TextInput):
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pass
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class TimeInput(widgets.TimeInput):
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input_type = 'time'
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def __init__(self, attrs=None, time_format='%H:%M'):
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default_attrs = {'maxlength': 5, 'size': 5}
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if attrs:
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default_attrs.update(attrs)
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super(TimeInput, self).__init__(default_attrs)
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if time_format:
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self.format = time_format
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self.manual_format = True
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else:
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self.format = formats.get_format('TIME_INPUT_FORMATS')[0]
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self.manual_format = False
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class URLInput(widgets.Input):
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input_type = 'url'
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class LookupMultipleHiddenInput(widgets.MultipleHiddenInput):
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def __init__(self, lookup_class, *args, **kwargs):
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self.lookup_class = lookup_class
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super(LookupMultipleHiddenInput, self).__init__(*args, **kwargs)
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def render(self, name, value, attrs=None, choices=()):
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lookup = self.lookup_class()
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value = [] if value is None else value
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final_attrs = self.build_attrs(attrs, type=self.input_type, name=name)
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id_ = final_attrs.get('id', None)
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inputs = []
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model = getattr(self.lookup_class, 'model', None)
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for i, v in enumerate(value):
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item = None
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if model and isinstance(v, model):
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item = v
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v = lookup.get_item_id(item)
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input_attrs = dict(value=force_unicode(v), **final_attrs)
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if id_:
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# An ID attribute was given. Add a numeric index as a suffix
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# so that the inputs don't all have the same ID attribute.
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input_attrs['id'] = '%s_%s' % (id_, i)
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if v:
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item = item or lookup.get_item(v)
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input_attrs['title'] = lookup.get_item_value(item)
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inputs.append(u'<input%s />' % flatatt(input_attrs))
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return mark_safe(u'\n'.join(inputs))
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def build_attrs(self, extra_attrs=None, **kwargs):
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attrs = super(LookupMultipleHiddenInput, self).build_attrs(extra_attrs, **kwargs) # @IgnorePep8
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attrs[u'data-selectable-type'] = 'hidden-multiple'
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return attrs
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class AutoCompleteSelectMultipleWidget(SelectableMultiWidget):
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def __init__(self, lookup_class, *args, **kwargs):
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self.lookup_class = lookup_class
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widgets = [
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AutoCompleteWidget(lookup_class, allow_new=False,
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attrs={u'data-selectable-multiple': 'true'}),
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LookupMultipleHiddenInput(lookup_class)
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]
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super(AutoCompleteSelectMultipleWidget, self).__init__(widgets, *args, **kwargs) # @IgnorePep8
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def value_from_datadict(self, data, files, name):
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return self.widgets[1].value_from_datadict(data, files, name + '_1')
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def render(self, name, value, attrs=None):
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if value and not hasattr(value, '__iter__'):
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value = [value]
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value = [u'', value]
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return super(AutoCompleteSelectMultipleWidget, self).render(name, value, attrs) # @IgnorePep8
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class AutoComboboxSelectMultipleWidget(SelectableMultiWidget):
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def __init__(self, lookup_class, *args, **kwargs):
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self.lookup_class = lookup_class
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widgets = [
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AutoComboboxWidget(lookup_class, allow_new=False,
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attrs={u'data-selectable-multiple': 'true'}),
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LookupMultipleHiddenInput(lookup_class)
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]
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super(AutoComboboxSelectMultipleWidget, self).__init__(widgets, *args, **kwargs) # @IgnorePep8
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def value_from_datadict(self, data, files, name):
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return self.widgets[1].value_from_datadict(data, files, name + '_1')
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def render(self, name, value, attrs=None):
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if value and not hasattr(value, '__iter__'):
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value = [value]
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value = [u'', value]
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return super(AutoComboboxSelectMultipleWidget, self).render(name, value, attrs) # @IgnorePep8
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class AutoCompleteSelectWidget(SelectableMultiWidget):
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def __init__(self, lookup_class, *args, **kwargs):
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self.lookup_class = lookup_class
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self.allow_new = kwargs.pop('allow_new', False)
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widget_set = [
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AutoCompleteWidget(lookup_class, allow_new=self.allow_new),
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widgets.HiddenInput(attrs={u'data-selectable-type': 'hidden'})
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]
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super(AutoCompleteSelectWidget, self).__init__(widget_set, *args, **kwargs) # @IgnorePep8
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def decompress(self, value):
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if value:
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lookup = self.lookup_class()
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model = getattr(self.lookup_class, 'model', None)
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if model and isinstance(value, model):
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item = value
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value = lookup.get_item_id(item)
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else:
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item = lookup.get_item(value)
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item_value = lookup.get_item_value(item)
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return [item_value, value]
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return [None, None]
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class AutoComboboxSelectWidget(SelectableMultiWidget):
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def __init__(self, lookup_class, *args, **kwargs):
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self.lookup_class = lookup_class
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self.allow_new = kwargs.pop('allow_new', False)
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widget_set = [
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AutoComboboxWidget(lookup_class, allow_new=self.allow_new),
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widgets.HiddenInput(attrs={u'data-selectable-type': 'hidden'})
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]
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super(AutoComboboxSelectWidget, self).__init__(widget_set, *args, **kwargs) # @IgnorePep8
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def decompress(self, value):
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if value:
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lookup = self.lookup_class()
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model = getattr(self.lookup_class, 'model', None)
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if model and isinstance(value, model):
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item = value
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value = lookup.get_item_id(item)
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else:
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item = lookup.get_item(value)
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item_value = lookup.get_item_value(item)
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return [item_value, value]
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return [None, None]
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