69 lines
2.7 KiB
Python
69 lines
2.7 KiB
Python
# combo - content management system
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# Copyright (C) 2014-2018 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from django import forms
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from django.utils.datastructures import MultiValueDict
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from django.utils.safestring import mark_safe
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class MultiSortWidget(forms.SelectMultiple):
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def __init__(self, *args, **kwargs):
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if 'with_checkboxes' in kwargs:
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self.with_checkboxes = kwargs.pop('with_checkboxes')
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else:
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self.with_checkboxes = False
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super(MultiSortWidget, self).__init__(*args, **kwargs)
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def render(self, name, value, attrs=None, choices=()):
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# reorder choices to get them in the current value order
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self_choices = self.choices[:]
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choices_dict = dict(self_choices)
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if value:
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for option in reversed(value.get('data')):
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if option not in choices_dict:
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continue
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option_tuple = (option, choices_dict[option])
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self.choices.remove(option_tuple)
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self.choices.insert(0, option_tuple)
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# render the <select multiple>
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rendered = super(MultiSortWidget, self).render(name, value,
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attrs=attrs)
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# include it in a <div> that will be turned into an appropriate widget
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# in javascript
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id_ = 'wid-%s' % name
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if self.with_checkboxes:
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attrs = 'data-checkboxes="true"'
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else:
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attrs = ''
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return mark_safe('''<div class="multisort" %s id="%s">%s</div>
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<script type="text/javascript">multisort($("#%s"));</script>
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''' % (attrs, id_, rendered, id_))
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def render_options(self, choices, value):
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value = value.get('data') or []
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return super(MultiSortWidget, self).render_options(choices, value)
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def value_from_datadict(self, data, files, name):
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if isinstance(data, MultiValueDict):
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return {'data': data.getlist(name)}
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return data.get(name, None)
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def format_value(self, value):
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value = value.get('data') or []
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return super(MultiSortWidget, self).format_value(value)
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