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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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−
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−
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−import copy
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−
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−from django import forms
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−from django.forms import util
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−from django.forms import widgets
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−from django.utils import html
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−from django.utils import simplejson
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−from django.utils import safestring
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−
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−
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−class ReadOnlyInput(forms.widgets.Input):
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−  """Read only input widget.
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−  """
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−  input_type = 'text'
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−
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−  def render(self, name, value, attrs=None):
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−    """Render ReadOnlyInput widget as HTML.
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−    """
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−    attrs['readonly'] = 'readonly'
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−    return super(ReadOnlyInput, self).render(name, value, attrs)
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−
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−
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−class ReadOnlyBool(forms.widgets.Input):
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−  """Read only checkbox widget.
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−  """
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−  input_type = 'text'
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−
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−  def render(self, name, value, attrs=None):
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−    """Render ReadOnlyBool widget as HTML.
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−
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−    Displays "text" field like ReadOnlyInput, but contents will be one of:
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−    * empty (no text at all, just a greyed-out box) if no answer at all
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−    * "True" (in the same greyed-out box) if True
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−    * "False" (in the same greyed-out box) if False
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−    """
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−    attrs['readonly'] = 'readonly'
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−    return super(ReadOnlyBool, self).render(name, value, attrs)
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−
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−
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−class TinyMCE(forms.widgets.Textarea):
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−  """TinyMCE widget. 
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−  
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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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−
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−  You can set TinyMCE widget for particular form field using code below:
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−    class ExampleForm(helper.forms.BaseForm):
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−      content = forms.fields.CharField(widget=helper.widgets.TinyMCE())
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−  
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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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−
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−  DEF_MCE_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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−
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−  TINY_MCE_HTML_FMT = u'''\
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−<textarea %(attrs)s>%(value)s</textarea>
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−<script type="text/javascript">
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−tinyMCE.init(%(settings_json)s)
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−</script>'''
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−
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−  def __init__(self, mce_settings=None, *args, **kwargs):
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−    """Initialize TinyMCE widget with default or customized settings.
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−    
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−    Args:
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−      mce_settings: dict with TinyMCE widget settings
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−      *args, **kwargs:  passed through to parent __init__() constructor
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−    """
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−    super(forms.widgets.Textarea, self).__init__(*args, **kwargs)
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−    
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−    # copy the class defaults to an instance data member
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−    self.mce_settings = copy.deepcopy(self.DEF_MCE_SETTINGS)
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−    
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−    if mce_settings:
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−      # modify the per-instance settings if called supplied customizations
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−      self.mce_settings.update(mce_settings)
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−  
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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 = util.smart_unicode(value)
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−    final_attrs = self.build_attrs(attrs, name=name)
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−    
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−    self.mce_settings['elements'] = "id_%s" % name
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−      
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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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−
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−    return safestring.mark_safe(self.TINY_MCE_HTML_FMT % 
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−        {'attrs': widgets.flatatt(final_attrs),
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−         'value': html.escape(value), 
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−         'settings_json':  mce_json})