from estimationtools.utils import EstimationToolsBase
from pkg_resources import resource_filename
from trac.core import implements, Component
from trac.web.api import IRequestFilter, IRequestHandler
from trac.web.chrome import ITemplateProvider, add_script

class HoursInPlaceEditor(EstimationToolsBase):
    """A filter to implement in-place editing for estimated hours field in query page.
    
    Requires Trac XML-RPC Plug-in.
    """

    implements(IRequestFilter, IRequestHandler, ITemplateProvider)
    
    # IRequestHandler methods
    def match_request(self, req):
        return req.path_info == '/estimationtools/edithours.js'

    def process_request(self, req):
        data = {}
        data['field'] = self.estimation_field 
        return 'edithours.html', {'data': data}, 'text/javascript' 

    # IRequestFilter methods
    def pre_process_request(self, req, handler):
        return handler
            
    def post_process_request(self, req, template, data, content_type):
        try:
            realm = data['context'].resource.realm
        except:
            realm = None
        if (realm in ('query', 'report', 'wiki', 'milestone')
            and (not 'preview' in req.args)
            and req.perm.has_permission('TICKET_MODIFY')
            and req.perm.has_permission('XML_RPC')):
            # add_script(req, 'estimationtools/jquery-1.2.3.min.js')
            add_script(req, 'estimationtools/jquery.jeditable.mini.js')
            add_script(req, '/estimationtools/edithours.js')
        return template, data, content_type

    # ITemplateProvider methods
    def get_htdocs_dirs(self):
        return [('estimationtools', resource_filename(__name__, 'htdocs'))]
            
    def get_templates_dirs(self):
        return [resource_filename(__name__, 'templates')]