function Controller() {
    installer.installationFinished.connect(function() {
        gui.clickButton(buttons.NextButton);
    });
    installer.setMessageBoxAutomaticAnswer("OverwriteTargetDirectory", QMessageBox.Yes);
    installer.setMessageBoxAutomaticAnswer("installationErrorWithRetry", QMessageBox.Ignore);
    installer.setMessageBoxAutomaticAnswer("cancelInstallation", QMessageBox.Yes);
}
Controller.prototype.WelcomePageCallback = function() {
    console.log("Welcome Page");
    gui.clickButton(buttons.NextButton, 3000);
}
Controller.prototype.CredentialsPageCallback = function() {
    console.log("Credentials Page");
    var login = installer.environmentVariable("QT_CI_LOGIN");
    var password = installer.environmentVariable("QT_CI_PASSWORD");
    if( login === "" || password === "" ) {
        console.log("No credentials provided - could stuck here forever");
        gui.clickButton(buttons.CommitButton);
    }
    var widget = gui.currentPageWidget();
    widget.loginWidget.EmailLineEdit.setText(login);
    widget.loginWidget.PasswordLineEdit.setText(password);
    gui.clickButton(buttons.CommitButton);
}
Controller.prototype.ComponentSelectionPageCallback = function() {
    console.log("Select components");
    var widget = gui.currentPageWidget();
    widget.deselectAll();
    widget.selectComponent("qt.qt5.5141.gcc_64");
    gui.clickButton(buttons.NextButton);
}
Controller.prototype.IntroductionPageCallback = function() {
    console.log("Introduction Page");
    console.log("Retrieving meta information from remote repository");
    gui.clickButton(buttons.NextButton);
}
Controller.prototype.TargetDirectoryPageCallback = function() {
    gui.clickButton(buttons.NextButton);
}
Controller.prototype.LicenseAgreementPageCallback = function() {
    console.log("Accept license agreement");
    var widget = gui.currentPageWidget();
    if (widget != null) {
        widget.AcceptLicenseRadioButton.setChecked(true);
    }
    gui.clickButton(buttons.NextButton);
}
Controller.prototype.ObligationsPageCallback = function() {
    console.log("Accept obligation agreement");
    var page = gui.pageWidgetByObjectName("ObligationsPage");
    page.obligationsAgreement.setChecked(true);
    page.completeChanged();
    gui.clickButton(buttons.NextButton);
}
Controller.prototype.ReadyForInstallationPageCallback = function() {
    console.log("Ready to install");
    gui.clickButton(buttons.CommitButton);
}
Controller.prototype.FinishedPageCallback = function() {
    var widget = gui.currentPageWidget();
    if (widget.LaunchQtCreatorCheckBoxForm) {
        // No this form for minimal platform
        widget.LaunchQtCreatorCheckBoxForm.launchQtCreatorCheckBox.setChecked(false);
    }
    gui.clickButton(buttons.FinishButton);
}
Controller.prototype.DynamicTelemetryPluginFormCallback = function() {
    var page = gui.pageWidgetByObjectName("DynamicTelemetryPluginForm");
    page.statisticGroupBox.disableStatisticRadioButton.setChecked(true);
    gui.clickButton(buttons.NextButton);
}