from Products.Archetypes.Widget import TextAreaWidget
from Products.Archetypes.Registry import registerWidget, registerPropertyType
from Products.Archetypes.utils import shasattr

from types import StringType
from Globals import InitializeClass
from AccessControl import ClassSecurityInfo

class SourceCodeWidget(TextAreaWidget):
    _properties = TextAreaWidget._properties.copy()
    _properties.update({
        'macro' : 'sourcecodewidget',
        'helper_js': ("silvercity_shCore.js", "silvercity_shBrushPython.js", "silvercity_shTrigger.js"),
        'helper_css': ("SyntaxHighlighter.css",),
        'get_language_method': None
        })
    
    security = ClassSecurityInfo()    

    # todo: should be only on a view
    security.declarePublic('getLanguage')
    def getLanguage(self, instance):
        """Return the language by looking
        up through get_language_method"""
        name = self.get_language_method
        if name is None:
            raise ValueError, "The get_language_method needs to be defined"
        if type(name) is StringType and shasattr(instance, name):
            method = getattr(instance, name)
            return method()
        else:
            raise ValueError, "Can't find the method %s on the object." % name

InitializeClass(SourceCodeWidget)

registerWidget(SourceCodeWidget,
               title='Source Code Widget',
               description=('A widget that displays sou'),
               used_for=('Products.Archetypes.Field.ReferenceField',)
               )

registerPropertyType('get_language_method', 'string', SourceCodeWidget)