app/django/forms/widgets.py
author Sverre Rabbelier <srabbelier@gmail.com>
Sat, 22 Nov 2008 13:59:34 +0000
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parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Make redirect generic using the new Lists object This makes it possible (and easier) to have the list view redirect to any page specially tailored to the current item. Patch by: Sverre Rabbelier
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"""
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HTML Widget classes
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"""
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try:
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    set
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except NameError:
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    from sets import Set as set   # Python 2.3 fallback
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import copy
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from itertools import chain
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from django.conf import settings
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from django.utils.datastructures import MultiValueDict, MergeDict
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from django.utils.html import escape, conditional_escape
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from django.utils.translation import ugettext
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from django.utils.encoding import StrAndUnicode, force_unicode
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from django.utils.safestring import mark_safe
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from django.utils import datetime_safe
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from datetime import time
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from util import flatatt
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from urlparse import urljoin
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__all__ = (
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    'Media', 'MediaDefiningClass', 'Widget', 'TextInput', 'PasswordInput',
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    'HiddenInput', 'MultipleHiddenInput',
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    'FileInput', 'DateTimeInput', 'TimeInput', 'Textarea', 'CheckboxInput',
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    'Select', 'NullBooleanSelect', 'SelectMultiple', 'RadioSelect',
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    'CheckboxSelectMultiple', 'MultiWidget',
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    'SplitDateTimeWidget',
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)
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MEDIA_TYPES = ('css','js')
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class Media(StrAndUnicode):
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    def __init__(self, media=None, **kwargs):
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        if media:
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            media_attrs = media.__dict__
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        else:
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            media_attrs = kwargs
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        self._css = {}
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        self._js = []
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        for name in MEDIA_TYPES:
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            getattr(self, 'add_' + name)(media_attrs.get(name, None))
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        # Any leftover attributes must be invalid.
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        # if media_attrs != {}:
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        #     raise TypeError, "'class Media' has invalid attribute(s): %s" % ','.join(media_attrs.keys())
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    def __unicode__(self):
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        return self.render()
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    def render(self):
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        return mark_safe(u'\n'.join(chain(*[getattr(self, 'render_' + name)() for name in MEDIA_TYPES])))
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    def render_js(self):
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        return [u'<script type="text/javascript" src="%s"></script>' % self.absolute_path(path) for path in self._js]
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    def render_css(self):
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        # To keep rendering order consistent, we can't just iterate over items().
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        # We need to sort the keys, and iterate over the sorted list.
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        media = self._css.keys()
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        media.sort()
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        return chain(*[
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            [u'<link href="%s" type="text/css" media="%s" rel="stylesheet" />' % (self.absolute_path(path), medium)
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                    for path in self._css[medium]]
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                for medium in media])
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    def absolute_path(self, path):
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        if path.startswith(u'http://') or path.startswith(u'https://') or path.startswith(u'/'):
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            return path
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        return urljoin(settings.MEDIA_URL,path)
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    def __getitem__(self, name):
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        "Returns a Media object that only contains media of the given type"
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        if name in MEDIA_TYPES:
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            return Media(**{name: getattr(self, '_' + name)})
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        raise KeyError('Unknown media type "%s"' % name)
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    def add_js(self, data):
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        if data:
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            self._js.extend([path for path in data if path not in self._js])
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    def add_css(self, data):
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        if data:
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            for medium, paths in data.items():
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                self._css.setdefault(medium, []).extend([path for path in paths if path not in self._css[medium]])
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    def __add__(self, other):
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        combined = Media()
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        for name in MEDIA_TYPES:
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            getattr(combined, 'add_' + name)(getattr(self, '_' + name, None))
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            getattr(combined, 'add_' + name)(getattr(other, '_' + name, None))
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        return combined
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def media_property(cls):
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    def _media(self):
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        # Get the media property of the superclass, if it exists
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        if hasattr(super(cls, self), 'media'):
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            base = super(cls, self).media
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        else:
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            base = Media()
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        # Get the media definition for this class
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        definition = getattr(cls, 'Media', None)
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        if definition:
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            extend = getattr(definition, 'extend', True)
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            if extend:
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                if extend == True:
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                    m = base
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                else:
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                    m = Media()
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                    for medium in extend:
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                        m = m + base[medium]
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                return m + Media(definition)
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            else:
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                return Media(definition)
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        else:
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            return base
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    return property(_media)
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class MediaDefiningClass(type):
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    "Metaclass for classes that can have media definitions"
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    def __new__(cls, name, bases, attrs):
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        new_class = super(MediaDefiningClass, cls).__new__(cls, name, bases,
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                                                           attrs)
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        if 'media' not in attrs:
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            new_class.media = media_property(new_class)
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        return new_class
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class Widget(object):
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    __metaclass__ = MediaDefiningClass
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    is_hidden = False          # Determines whether this corresponds to an <input type="hidden">.
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    needs_multipart_form = False # Determines does this widget need multipart-encrypted form
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    def __init__(self, attrs=None):
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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 __deepcopy__(self, memo):
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        obj = copy.copy(self)
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        obj.attrs = self.attrs.copy()
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        memo[id(self)] = obj
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        return obj
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    def render(self, name, value, attrs=None):
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        """
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        Returns this Widget rendered as HTML, as a Unicode string.
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        The 'value' given is not guaranteed to be valid input, so subclass
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        implementations should program defensively.
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        """
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        raise NotImplementedError
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    def build_attrs(self, extra_attrs=None, **kwargs):
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        "Helper function for building an attribute dictionary."
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        attrs = dict(self.attrs, **kwargs)
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        if extra_attrs:
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            attrs.update(extra_attrs)
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        return attrs
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    def value_from_datadict(self, data, files, name):
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        """
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        Given a dictionary of data and this widget's name, returns the value
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        of this widget. Returns None if it's not provided.
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        """
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        return data.get(name, None)
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    def _has_changed(self, initial, data):
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        """
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        Return True if data differs from initial.
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        """
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        # For purposes of seeing whether something has changed, None is
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        # the same as an empty string, if the data or inital value we get
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        # is None, replace it w/ u''.
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        if data is None:
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            data_value = u''
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        else:
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            data_value = data
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        if initial is None:
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            initial_value = u''
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        else:
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            initial_value = initial
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        if force_unicode(initial_value) != force_unicode(data_value):
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            return True
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        return False
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    def id_for_label(self, id_):
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        """
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        Returns the HTML ID attribute of this Widget for use by a <label>,
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        given the ID of the field. Returns None if no ID is available.
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        This hook is necessary because some widgets have multiple HTML
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        elements and, thus, multiple IDs. In that case, this method should
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        return an ID value that corresponds to the first ID in the widget's
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        tags.
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        """
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        return id_
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    id_for_label = classmethod(id_for_label)
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class Input(Widget):
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    """
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    Base class for all <input> widgets (except type='checkbox' and
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    type='radio', which are special).
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    """
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    input_type = None # Subclasses must define this.
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    def render(self, name, value, attrs=None):
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        if value is None: value = ''
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        final_attrs = self.build_attrs(attrs, type=self.input_type, name=name)
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        if value != '':
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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 />' % flatatt(final_attrs))
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class TextInput(Input):
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    input_type = 'text'
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class PasswordInput(Input):
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    input_type = 'password'
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    def __init__(self, attrs=None, render_value=True):
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        super(PasswordInput, self).__init__(attrs)
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        self.render_value = render_value
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    def render(self, name, value, attrs=None):
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        if not self.render_value: value=None
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        return super(PasswordInput, self).render(name, value, attrs)
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class HiddenInput(Input):
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    input_type = 'hidden'
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    is_hidden = True
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class MultipleHiddenInput(HiddenInput):
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    """
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    A widget that handles <input type="hidden"> for fields that have a list
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    of values.
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    """
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    def __init__(self, attrs=None, choices=()):
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        super(MultipleHiddenInput, self).__init__(attrs)
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        # choices can be any iterable
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        self.choices = choices
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    def render(self, name, value, attrs=None, choices=()):
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        if value is None: value = []
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        final_attrs = self.build_attrs(attrs, type=self.input_type, name=name)
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        return mark_safe(u'\n'.join([(u'<input%s />' %
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            flatatt(dict(value=force_unicode(v), **final_attrs)))
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            for v in value]))
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    def value_from_datadict(self, data, files, name):
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        if isinstance(data, (MultiValueDict, MergeDict)):
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            return data.getlist(name)
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        return data.get(name, None)
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class FileInput(Input):
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    input_type = 'file'
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    needs_multipart_form = True
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    def render(self, name, value, attrs=None):
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        return super(FileInput, self).render(name, None, attrs=attrs)
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    def value_from_datadict(self, data, files, name):
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        "File widgets take data from FILES, not POST"
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        return files.get(name, None)
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    def _has_changed(self, initial, data):
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        if data is None:
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            return False
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        return True
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class Textarea(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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        self.attrs = {'cols': '40', 'rows': '10'}
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        if attrs:
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            self.attrs.update(attrs)
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    def render(self, name, value, attrs=None):
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        if value is None: 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 DateTimeInput(Input):
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    input_type = 'text'
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    format = '%Y-%m-%d %H:%M:%S'     # '2006-10-25 14:30:59'
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    def __init__(self, attrs=None, format=None):
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        super(DateTimeInput, self).__init__(attrs)
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        if format:
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            self.format = format
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    def render(self, name, value, attrs=None):
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        if value is None:
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            value = ''
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        elif hasattr(value, 'strftime'):
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            value = datetime_safe.new_datetime(value)
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            value = value.strftime(self.format)
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        return super(DateTimeInput, self).render(name, value, attrs)
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class TimeInput(Input):
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    input_type = 'text'
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    def render(self, name, value, attrs=None):
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        if value is None:
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            value = ''
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        elif isinstance(value, time):
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            value = value.replace(microsecond=0)
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        return super(TimeInput, self).render(name, value, attrs)
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class CheckboxInput(Widget):
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    def __init__(self, attrs=None, check_test=bool):
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        super(CheckboxInput, self).__init__(attrs)
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        # check_test is a callable that takes a value and returns True
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        # if the checkbox should be checked for that value.
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        self.check_test = check_test
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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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        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 value not in ('', True, False, None):
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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 />' % flatatt(final_attrs))
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    def value_from_datadict(self, data, files, name):
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        if name not in data:
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            # A missing value means False because HTML form submission does not
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            # send results for unselected checkboxes.
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            return False
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        return super(CheckboxInput, self).value_from_datadict(data, files, name)
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    def _has_changed(self, initial, data):
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   343
        # Sometimes data or initial could be None or u'' which should be the
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        # same thing as False.
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   345
        return bool(initial) != bool(data)
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class Select(Widget):
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    def __init__(self, attrs=None, choices=()):
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        super(Select, self).__init__(attrs)
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        # choices can be any iterable, but we may need to render this widget
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        # multiple times. Thus, collapse it into a list so it can be consumed
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        # more than once.
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        self.choices = list(choices)
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    def render(self, name, value, attrs=None, choices=()):
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        if value is None: value = ''
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        final_attrs = self.build_attrs(attrs, name=name)
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        output = [u'<select%s>' % flatatt(final_attrs)]
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        options = self.render_options(choices, [value])
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        if options:
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   361
            output.append(options)
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        output.append('</select>')
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   363
        return mark_safe(u'\n'.join(output))
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   365
    def render_options(self, choices, selected_choices):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   366
        def render_option(option_value, option_label):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   367
            option_value = force_unicode(option_value)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   368
            selected_html = (option_value in selected_choices) and u' selected="selected"' or ''
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   369
            return u'<option value="%s"%s>%s</option>' % (
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   370
                escape(option_value), selected_html,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   371
                conditional_escape(force_unicode(option_label)))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   372
        # Normalize to strings.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   373
        selected_choices = set([force_unicode(v) for v in selected_choices])
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   374
        output = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   375
        for option_value, option_label in chain(self.choices, choices):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   376
            if isinstance(option_label, (list, tuple)):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   377
                output.append(u'<optgroup label="%s">' % escape(force_unicode(option_value)))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   378
                for option in option_label:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   379
                    output.append(render_option(*option))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   380
                output.append(u'</optgroup>')
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   381
            else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   382
                output.append(render_option(option_value, option_label))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   383
        return u'\n'.join(output)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   384
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   385
class NullBooleanSelect(Select):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   386
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   387
    A Select Widget intended to be used with NullBooleanField.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   388
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   389
    def __init__(self, attrs=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   390
        choices = ((u'1', ugettext('Unknown')), (u'2', ugettext('Yes')), (u'3', ugettext('No')))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   391
        super(NullBooleanSelect, self).__init__(attrs, choices)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   392
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   393
    def render(self, name, value, attrs=None, choices=()):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   394
        try:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   395
            value = {True: u'2', False: u'3', u'2': u'2', u'3': u'3'}[value]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   396
        except KeyError:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   397
            value = u'1'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   398
        return super(NullBooleanSelect, self).render(name, value, attrs, choices)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   399
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   400
    def value_from_datadict(self, data, files, name):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   401
        value = data.get(name, None)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   402
        return {u'2': True, u'3': False, True: True, False: False}.get(value, None)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   403
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   404
    def _has_changed(self, initial, data):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   405
        # Sometimes data or initial could be None or u'' which should be the
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   406
        # same thing as False.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   407
        return bool(initial) != bool(data)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   408
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   409
class SelectMultiple(Select):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   410
    def render(self, name, value, attrs=None, choices=()):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   411
        if value is None: value = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   412
        final_attrs = self.build_attrs(attrs, name=name)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   413
        output = [u'<select multiple="multiple"%s>' % flatatt(final_attrs)]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   414
        options = self.render_options(choices, value)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   415
        if options:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   416
            output.append(options)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   417
        output.append('</select>')
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   418
        return mark_safe(u'\n'.join(output))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   419
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   420
    def value_from_datadict(self, data, files, name):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   421
        if isinstance(data, (MultiValueDict, MergeDict)):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   422
            return data.getlist(name)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   423
        return data.get(name, None)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   424
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   425
    def _has_changed(self, initial, data):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   426
        if initial is None:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   427
            initial = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   428
        if data is None:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   429
            data = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   430
        if len(initial) != len(data):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   431
            return True
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   432
        for value1, value2 in zip(initial, data):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   433
            if force_unicode(value1) != force_unicode(value2):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   434
                return True
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   435
        return False
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   436
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   437
class RadioInput(StrAndUnicode):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   438
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   439
    An object used by RadioFieldRenderer that represents a single
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   440
    <input type='radio'>.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   441
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   442
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   443
    def __init__(self, name, value, attrs, choice, index):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   444
        self.name, self.value = name, value
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   445
        self.attrs = attrs
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   446
        self.choice_value = force_unicode(choice[0])
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   447
        self.choice_label = force_unicode(choice[1])
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   448
        self.index = index
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   449
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   450
    def __unicode__(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   451
        if 'id' in self.attrs:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   452
            label_for = ' for="%s_%s"' % (self.attrs['id'], self.index)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   453
        else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   454
            label_for = ''
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   455
        choice_label = conditional_escape(force_unicode(self.choice_label))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   456
        return mark_safe(u'<label%s>%s %s</label>' % (label_for, self.tag(), choice_label))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   457
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   458
    def is_checked(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   459
        return self.value == self.choice_value
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   460
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   461
    def tag(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   462
        if 'id' in self.attrs:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   463
            self.attrs['id'] = '%s_%s' % (self.attrs['id'], self.index)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   464
        final_attrs = dict(self.attrs, type='radio', name=self.name, value=self.choice_value)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   465
        if self.is_checked():
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   466
            final_attrs['checked'] = 'checked'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   467
        return mark_safe(u'<input%s />' % flatatt(final_attrs))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   468
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   469
class RadioFieldRenderer(StrAndUnicode):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   470
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   471
    An object used by RadioSelect to enable customization of radio widgets.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   472
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   473
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   474
    def __init__(self, name, value, attrs, choices):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   475
        self.name, self.value, self.attrs = name, value, attrs
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   476
        self.choices = choices
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   477
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   478
    def __iter__(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   479
        for i, choice in enumerate(self.choices):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   480
            yield RadioInput(self.name, self.value, self.attrs.copy(), choice, i)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   481
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   482
    def __getitem__(self, idx):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   483
        choice = self.choices[idx] # Let the IndexError propogate
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   484
        return RadioInput(self.name, self.value, self.attrs.copy(), choice, idx)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   485
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   486
    def __unicode__(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   487
        return self.render()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   488
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   489
    def render(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   490
        """Outputs a <ul> for this set of radio fields."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   491
        return mark_safe(u'<ul>\n%s\n</ul>' % u'\n'.join([u'<li>%s</li>'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   492
                % force_unicode(w) for w in self]))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   493
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   494
class RadioSelect(Select):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   495
    renderer = RadioFieldRenderer
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   496
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   497
    def __init__(self, *args, **kwargs):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   498
        # Override the default renderer if we were passed one.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   499
        renderer = kwargs.pop('renderer', None)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   500
        if renderer:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   501
            self.renderer = renderer
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   502
        super(RadioSelect, self).__init__(*args, **kwargs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   503
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   504
    def get_renderer(self, name, value, attrs=None, choices=()):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   505
        """Returns an instance of the renderer."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   506
        if value is None: value = ''
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   507
        str_value = force_unicode(value) # Normalize to string.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   508
        final_attrs = self.build_attrs(attrs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   509
        choices = list(chain(self.choices, choices))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   510
        return self.renderer(name, str_value, final_attrs, choices)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   511
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   512
    def render(self, name, value, attrs=None, choices=()):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   513
        return self.get_renderer(name, value, attrs, choices).render()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   514
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   515
    def id_for_label(self, id_):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   516
        # RadioSelect is represented by multiple <input type="radio"> fields,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   517
        # each of which has a distinct ID. The IDs are made distinct by a "_X"
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   518
        # suffix, where X is the zero-based index of the radio field. Thus,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   519
        # the label for a RadioSelect should reference the first one ('_0').
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   520
        if id_:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   521
            id_ += '_0'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   522
        return id_
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   523
    id_for_label = classmethod(id_for_label)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   524
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   525
class CheckboxSelectMultiple(SelectMultiple):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   526
    def render(self, name, value, attrs=None, choices=()):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   527
        if value is None: value = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   528
        has_id = attrs and 'id' in attrs
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   529
        final_attrs = self.build_attrs(attrs, name=name)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   530
        output = [u'<ul>']
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   531
        # Normalize to strings
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   532
        str_values = set([force_unicode(v) for v in value])
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   533
        for i, (option_value, option_label) in enumerate(chain(self.choices, choices)):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   534
            # If an ID attribute was given, add a numeric index as a suffix,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   535
            # so that the checkboxes don't all have the same ID attribute.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   536
            if has_id:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   537
                final_attrs = dict(final_attrs, id='%s_%s' % (attrs['id'], i))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   538
                label_for = u' for="%s"' % final_attrs['id']
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   539
            else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   540
                label_for = ''
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   541
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   542
            cb = CheckboxInput(final_attrs, check_test=lambda value: value in str_values)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   543
            option_value = force_unicode(option_value)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   544
            rendered_cb = cb.render(name, option_value)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   545
            option_label = conditional_escape(force_unicode(option_label))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   546
            output.append(u'<li><label%s>%s %s</label></li>' % (label_for, rendered_cb, option_label))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   547
        output.append(u'</ul>')
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   548
        return mark_safe(u'\n'.join(output))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   549
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   550
    def id_for_label(self, id_):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   551
        # See the comment for RadioSelect.id_for_label()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   552
        if id_:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   553
            id_ += '_0'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   554
        return id_
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   555
    id_for_label = classmethod(id_for_label)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   556
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   557
class MultiWidget(Widget):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   558
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   559
    A widget that is composed of multiple widgets.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   560
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   561
    Its render() method is different than other widgets', because it has to
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   562
    figure out how to split a single value for display in multiple widgets.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   563
    The ``value`` argument can be one of two things:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   564
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   565
        * A list.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   566
        * A normal value (e.g., a string) that has been "compressed" from
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   567
          a list of values.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   568
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   569
    In the second case -- i.e., if the value is NOT a list -- render() will
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   570
    first "decompress" the value into a list before rendering it. It does so by
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   571
    calling the decompress() method, which MultiWidget subclasses must
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   572
    implement. This method takes a single "compressed" value and returns a
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   573
    list.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   574
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   575
    When render() does its HTML rendering, each value in the list is rendered
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   576
    with the corresponding widget -- the first value is rendered in the first
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   577
    widget, the second value is rendered in the second widget, etc.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   578
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   579
    Subclasses may implement format_output(), which takes the list of rendered
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   580
    widgets and returns a string of HTML that formats them any way you'd like.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   581
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   582
    You'll probably want to use this class with MultiValueField.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   583
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   584
    def __init__(self, widgets, attrs=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   585
        self.widgets = [isinstance(w, type) and w() or w for w in widgets]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   586
        super(MultiWidget, self).__init__(attrs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   587
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   588
    def render(self, name, value, attrs=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   589
        # value is a list of values, each corresponding to a widget
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   590
        # in self.widgets.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   591
        if not isinstance(value, list):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   592
            value = self.decompress(value)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   593
        output = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   594
        final_attrs = self.build_attrs(attrs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   595
        id_ = final_attrs.get('id', None)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   596
        for i, widget in enumerate(self.widgets):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   597
            try:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   598
                widget_value = value[i]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   599
            except IndexError:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   600
                widget_value = None
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   601
            if id_:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   602
                final_attrs = dict(final_attrs, id='%s_%s' % (id_, i))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   603
            output.append(widget.render(name + '_%s' % i, widget_value, final_attrs))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   604
        return mark_safe(self.format_output(output))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   605
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   606
    def id_for_label(self, id_):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   607
        # See the comment for RadioSelect.id_for_label()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   608
        if id_:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   609
            id_ += '_0'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   610
        return id_
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   611
    id_for_label = classmethod(id_for_label)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   612
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   613
    def value_from_datadict(self, data, files, name):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   614
        return [widget.value_from_datadict(data, files, name + '_%s' % i) for i, widget in enumerate(self.widgets)]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   615
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   616
    def _has_changed(self, initial, data):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   617
        if initial is None:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   618
            initial = [u'' for x in range(0, len(data))]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   619
        else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   620
            if not isinstance(initial, list):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   621
                initial = self.decompress(initial)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   622
        for widget, initial, data in zip(self.widgets, initial, data):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   623
            if widget._has_changed(initial, data):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   624
                return True
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   625
        return False
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   626
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   627
    def format_output(self, rendered_widgets):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   628
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   629
        Given a list of rendered widgets (as strings), returns a Unicode string
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   630
        representing the HTML for the whole lot.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   631
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   632
        This hook allows you to format the HTML design of the widgets, if
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   633
        needed.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   634
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   635
        return u''.join(rendered_widgets)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   636
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   637
    def decompress(self, value):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   638
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   639
        Returns a list of decompressed values for the given compressed value.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   640
        The given value can be assumed to be valid, but not necessarily
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   641
        non-empty.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   642
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   643
        raise NotImplementedError('Subclasses must implement this method.')
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   644
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   645
    def _get_media(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   646
        "Media for a multiwidget is the combination of all media of the subwidgets"
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   647
        media = Media()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   648
        for w in self.widgets:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   649
            media = media + w.media
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   650
        return media
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   651
    media = property(_get_media)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   652
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   653
class SplitDateTimeWidget(MultiWidget):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   654
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   655
    A Widget that splits datetime input into two <input type="text"> boxes.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   656
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   657
    def __init__(self, attrs=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   658
        widgets = (TextInput(attrs=attrs), TextInput(attrs=attrs))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   659
        super(SplitDateTimeWidget, self).__init__(widgets, attrs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   660
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   661
    def decompress(self, value):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   662
        if value:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   663
            return [value.date(), value.time().replace(microsecond=0)]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   664
        return [None, None]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   665
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   666
class SplitHiddenDateTimeWidget(SplitDateTimeWidget):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   667
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   668
    A Widget that splits datetime input into two <input type="hidden"> inputs.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   669
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   670
    def __init__(self, attrs=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   671
        widgets = (HiddenInput(attrs=attrs), HiddenInput(attrs=attrs))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   672
        super(SplitDateTimeWidget, self).__init__(widgets, attrs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   673