1 #!/usr/bin/python2.5

     2 #

     3 # Copyright 2008 the Melange authors.

     4 #

     5 # Licensed under the Apache License, Version 2.0 (the "License");

     6 # you may not use this file except in compliance with the License.

     7 # You may obtain a copy of the License at

     8 #

     9 #   http://www.apache.org/licenses/LICENSE-2.0

    10 #

    11 # Unless required by applicable law or agreed to in writing, software

    12 # distributed under the License is distributed on an "AS IS" BASIS,

    13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    14 # See the License for the specific language governing permissions and

    15 # limitations under the License.

    16 

    17 """Custom widgets used for form fields.

    18 """

    19 

    20 __authors__ = [

    21   '"Pawel Solyga" <pawel.solyga@gmail.com>',

    22   ]

    23 

    24 

    25 import copy

    26 

    27 from django import newforms as forms

    28 from django.newforms import util

    29 from django.newforms import widgets

    30 from django.utils import html

    31 from django.utils import simplejson

    32 from django.utils import safestring

    33 

    34 

    35 class ReadOnlyInput(forms.widgets.Input):

    36   """Read only input widget.

    37   """

    38   input_type = 'text'

    39 

    40   def render(self, name, value, attrs=None):

    41     """Render ReadOnlyInput widget as HTML.

    42     """

    43     attrs['readonly'] = 'readonly'

    44     return super(ReadOnlyInput, self).render(name, value, attrs)

    45 

    46 

    47 class TinyMCE(forms.widgets.Textarea):

    48   """TinyMCE widget. 

    49   

    50   Requires to include tiny_mce_src.js in your template. Widget can be

    51   customized by overwriting or adding extra options to mce_settings

    52   dictionary

    53 

    54   You can set TinyMCE widget for particular form field using code below:

    55     class ExampleForm(forms_helpers.DbModelForm):

    56       content = forms.fields.CharField(widget=custom_widgets.TinyMCE())

    57   

    58   You can include tiny_mce_src.js in your template using:

    59     {% block scripts %}

    60   	  <script type="text/javascript" src="/tiny_mce/tiny_mce_src.js"></script>

    61     {% endblock %}

    62   """ 

    63   DEF_MCE_SETTINGS = { 'mode': "exact",

    64                        'theme': "simple",

    65                        'theme_advanced_toolbar_location': "top",

    66                        'theme_advanced_toolbar_align': "center"}

    67 

    68   mce_settings = DEF_MCE_SETTINGS.copy()

    69 

    70   TINY_MCE_HTML_FMT = u'''\

    71 <textarea %(attrs)s>%(value)s</textarea>

    72 <script type="text/javascript">

    73 tinyMCE.init(%(settings_json)s)

    74 </script>'''

    75   

    76   def render(self, name, value, attrs=None):

    77     """Render TinyMCE widget as HTML.

    78     """

    79     if value is None:

    80       value = ''

    81     value = util.smart_unicode(value)

    82     final_attrs = self.build_attrs(attrs, name=name)

    83     

    84     self.mce_settings['elements'] = "id_%s" % name

    85       

    86     # convert mce_settings from dict to JSON

    87     mce_json = simplejson.JSONEncoder().encode(self.mce_settings)

    88 

    89     return safestring.mark_safe(self.TINY_MCE_HTML_FMT % 

    90         {'attrs': widgets.flatatt(final_attrs),

    91          'value': html.escape(value), 

    92          'settings_json':  mce_json})