from PyQt4 import QtGui
from Ui_AddFeed import Ui_AddFeed
import logging

class AddFeed(QtGui.QDialog):
    def __init__(self, backend=None):
        QtGui.QWidget.__init__(self, None)
        self.backend = backend
        self.exception = None
        self.ui = Ui_AddFeed()
        self.ui.setupUi(self)
        self.ui.url.setFocus()

    def accept(self):
        try:
            self.createFeed()
            self.session.commit() # TODO this should be the responsibility of the FeedUpdater
        except AttributeError as ae:
            logging.getLogger("AddFeed").info(ae)

            self.exception = ae
            self.session.rollback() # TODO this should be the responsibility of the FeedUpdater
        QtGui.QDialog.accept(self)

    def createFeed(self):
        url = self.getUrl()
        # TODO get status and display in status area of the main window
        self.backend.feedUpdater().createNewFeed(url)

    def getUrl(self):
        text = self.ui.url.text()
        # the content of a QLineEdit is a QString, convert it to a Python string
        return str(text)