##################################################################################
#    Copyright (c) 2004-2009 Utah State University, All rights reserved.
#    Portions copyright 2009 Massachusetts Institute of Technology, All rights reserved.
#                                                                                 
#    This program is free software; you can redistribute it and/or modify         
#    it under the terms of the GNU General Public License as published by         
#    the Free Software Foundation; either version 2 of the License, or            
#    (at your option) any later version.                                          
#                                                                                 
#    This program is distributed in the hope that it will be useful,              
#    but WITHOUT ANY WARRANTY; without even the implied warranty of               
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                
#    GNU General Public License for more details.                                 
#                                                                                 
#    You should have received a copy of the GNU General Public License            
#    along with this program; if not, write to the Free Software                  
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA    
#                                                                                 
##################################################################################

__author__  = '''Brent Lambert, David Ray, Jon Thomas'''
__docformat__ = 'plaintext'
__version__   = '$ Revision 0.0 $'[11:-2]

from collective.contentlicensing.DublinCoreExtensions.interfaces import ILicensable, ILicense
from collective.contentlicensing.utilities.interfaces import IContentLicensingUtility
from Products.CMFCore.utils import getToolByName
from zope.component import getUtility

def UpdateLicenseMetadataHandler(obj, event):
    """ Update License Metadata. """
    if ILicensable.providedBy(event.object):
        license = ILicense(event.object)
        if hasattr(event.object.REQUEST, 'license') or hasattr(event.object.REQUEST, 'copyright_holder'):
            clutil = getUtility(IContentLicensingUtility)
            if clutil:
                clutil.setLicense(event.object, license)
            else:
                license.setRightsLicense(event.object.REQUEST['license'])

        
