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from django import forms
from django.contrib.admin.widgets import AdminTextareaWidget
from django.core.urlresolvers import reverse
from django.utils import simplejson as json
from markupmirror import settings
from markupmirror.markup.base import markup_pool
class MarkupMirrorTextarea(forms.Textarea):
css_classes = ('markupmirror-editor',)
def __init__(self, attrs=None):
"""Adds the ``markupmirror-editor`` class to the textarea to make sure
it can be identified through JS.
"""
css_class = attrs.get('class', '') if attrs else ''
for cls in self.css_classes:
if cls not in css_class:
css_class += ' ' + cls
css_class = css_class.strip()
default_attrs = {
'class': css_class,
}
if attrs:
default_attrs.update(attrs)
super(MarkupMirrorTextarea, self).__init__(attrs=default_attrs)
def render(self, name, value, attrs=None):
default_attrs = {}
# start with CodeMirror base settings
mm_settings = settings.MARKUPMIRROR_CODEMIRROR_SETTINGS.copy()
markup_type = settings.MARKUPMIRROR_DEFAULT_MARKUP_TYPE
# if value is filled, use the markup type defined with the content
if value is not None and not isinstance(value, unicode):
# get markup converter by type.
# ``value`` is ``markupmirror.fields.Markup``.
markup_type = value.markup_type
# get real value
value = value.raw
# mode for CodeMirror and preview and base URLs plus markup_type
# parameter for loading markup previews
mm_settings.update({
'mode': markup_pool[markup_type].codemirror_mode,
'markup_type': markup_type,
'preview_url': reverse('markupmirror:preview'),
'base_url': reverse('markupmirror:base'),
})
# provide mm_settings as data attribute in widget
default_attrs = {
'data-mm-settings': json.dumps(mm_settings, sort_keys=True),
}
if attrs:
default_attrs.update(attrs)
return super(MarkupMirrorTextarea, self).render(name, value,
default_attrs)
class Media:
css = {
'all': settings.MARKUPMIRROR_CSS
}
js = settings.MARKUPMIRROR_JS
class AdminMarkupMirrorTextareaWidget(
MarkupMirrorTextarea, AdminTextareaWidget):
css_classes = ('vLargeTextField', 'markupmirror-editor')
__all__ = ('MarkupMirrorTextarea', 'AdminMarkupMirrorTextareaWidget')
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