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POSelf contained classes with Qt
 

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    <p>I've been trying to make my classes completely self contained, but I'm having some problems, which are probably coming from my missing something that everybody else knew first off...</p> <p>Anyway, take this example:</p> <pre><code>class Main_Window (QtGui.QMainWindow): def __init__ (self, parent=None): QtGui.QWidget.__init__(self, parent) self.ui = Ui_bookingSystemMain() self.ui.setupUi(self) # Connect slots QtCore.QObject.connect(self.ui.submitRecord, QtCore.SIGNAL("clicked()"), self.__clickSubmitRecord) QtCore.QObject.connect(self.ui.btnListBookings, QtCore.SIGNAL("clicked()"), self.__show_list) def __clickSubmitRecord (self): global bookings name = self.ui.edtName.text() event = str(self.ui.comEvent.currentText()) amount = self.ui.spinBox.value() if name == '': QtGui.QMessageBox.warning(self, "Error", "Please enter a name!") elif amount == 0: QtGui.QMessageBox.warning(self, "Error", "You can't reserve 0 tickets!") elif event == '': QtGui.QMessageBox.warning(self, "Error", "Please choose an event!") else: bookings.append(Booking(name, event, amount)) QtGui.QMessageBox.information(self, "Booking added", "Your booking for " + str(amount) + " ticket(s) to see " + event + " in the name of " + name + " was sucessful.") self.__clear_widgets() def __clear_widgets (self): self.ui.edtName.clear() self.ui.comEvent.setCurrentIndex(-1) self.ui.spinBox.setValue(0) def __show_list (self): listdialog = List_Window(self) listdialog.show() </code></pre> <p>Which implements a UI described in another module. The clickSubmitRecord() method uses the global 'booking' list and adds to it - now surely this class shouldn't have anything to do with anything other than that UI?</p> <p>How would I implement this in a good ood way? As I said I'm probably missing some kind of technique or obvious design feature...</p> <p>Thanks!</p>
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