app/soc/views/helpers/custom_widgets.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Tue, 23 Sep 2008 19:20:57 +0000
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Changes in TinyMCE widget in custom_widgets.py based on review comments. Patch by: Pawel Solyga Review url: http://code.google.com/p/soc/source/detail?r=550
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#!/usr/bin/python2.5
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#
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# Copyright 2008 the Melange authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#   http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Custom widgets used for form fields.
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"""
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__authors__ = [
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  '"Pawel Solyga" <pawel.solyga@gmail.com>',
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  ]
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from django import newforms as forms
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from django.newforms.widgets import flatatt
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from django.newforms.util import smart_unicode
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from django.utils.html import escape
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from django.utils import simplejson
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from django.utils.safestring import mark_safe
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class TinyMCE(forms.widgets.Textarea):
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    """TinyMCE widget. 
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    Requires to include tiny_mce_src.js in your template. Widget can be
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    customized by overwriting or adding extra options to mce_settings
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    dictionary
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    You can set TinyMCE widget for particular form field using code below:
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      class ExampleForm(forms_helpers.DbModelForm):
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        content = forms.fields.CharField(widget=custom_widgets.TinyMCE())
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    You can include tiny_mce_src.js in your template using:
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      {% block scripts %}
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    	  <script type="text/javascript" src="/tiny_mce/tiny_mce_src.js"></script>
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      {% endblock %}
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    """ 
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    MCE_DEF_SETTINGS = { 'mode': "exact",
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                         'theme': "simple",
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                         'theme_advanced_toolbar_location': "top",
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                         'theme_advanced_toolbar_align': "center"}
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    mce_settings = MCE_DEF_SETTINGS
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    TINY_MCE_HTML_FMT = u'''<textarea %(attrs)s>%(value)s</textarea>
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                <script type="text/javascript">
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                tinyMCE.init(%(settings_json)s)</script>'''
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    def render(self, name, value, attrs=None):
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        """Render TinyMCE widget as HTML.
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        """
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        if value is None:
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          value = ''
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        value = smart_unicode(value)
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        final_attrs = self.build_attrs(attrs, name=name)
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        self.mce_settings['elements'] = "id_%s" % name
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        # convert mce_settings from dict to JSON
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        mce_json = simplejson.JSONEncoder().encode(self.mce_settings)
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        return mark_safe( self.TINY_MCE_HTML_FMT % 
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            { 'attrs': flatatt(final_attrs),
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              'value': escape(value), 
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              'settings_json':  mce_json})