from WebKit.Page import Page
from FunFormKit.Form import FormServlet, FormDefinition
from FunFormKit import Field
from FunFormKit.Validator import ValidatorConverter, InvalidField
import random

class IntValidator(ValidatorConverter):
    def convert(self, num):
        try:
            return int(num)
        except ValueError:
            raise InvalidField, "Field must be a number!"

formDef = FormDefinition("CCConvertedWinner",
                         [Field.TextField("randmax", maxLength=5, size=3,
                                          description="Upper border of random"\
                                          "number wanted",
                                          validators=[IntValidator()]),
                          Field.TextField("useless", maxLength=200, size=20,
                                          description="A useless field"),
                          Field.SubmitButton("submit",
                                             description="Randomize me!",
                                             methodToInvoke="randomize_me")],

                         )

class CCConvertedWinner(Page, FormServlet):
    def __init__(self):
        Page.__init__(self)
        FormServlet.__init__(self, [formDef])

    def title(self):
        return "A random example.."

    def randomize_me(self, fields):
        maxrandnr = int(fields['randmax'])
        randnr = random.randrange(0, maxrandnr)
        self.write("Your random number between 0 and %d is %d<p>" % (maxrandnr,
                                                                     randnr))

    def writeContent(self):
        submitted, data = self.processForm()
        rf = self.renderableForm()
        self.write(rf.htFormTable(bgcolor="#ddddff"))