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licensewizard.cpp Example File
dialogs/licensewizard/licensewizard.cpp

 /****************************************************************************
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 ** Contact: Qt Software Information ([email protected])
 **
 ** This file is part of the examples of the Qt Toolkit.
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 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
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 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
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 ** additional rights. These rights are described in the Nokia Qt LGPL
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 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
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 ** packaging of this file.  Please review the following information to
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 #include <QtGui>

 #include "licensewizard.h"

 LicenseWizard::LicenseWizard(QWidget *parent)
     : QWizard(parent)
 {
     setPage(Page_Intro, new IntroPage);
     setPage(Page_Evaluate, new EvaluatePage);
     setPage(Page_Register, new RegisterPage);
     setPage(Page_Details, new DetailsPage);
     setPage(Page_Conclusion, new ConclusionPage);

     setStartId(Page_Intro);

 #ifndef Q_WS_MAC
     setWizardStyle(ModernStyle);
 #endif
     setOption(HaveHelpButton, true);
     setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo.png"));

     connect(this, SIGNAL(helpRequested()), this, SLOT(showHelp()));

     setWindowTitle(tr("License Wizard"));
 }

 void LicenseWizard::showHelp()
 {
     static QString lastHelpMessage;

     QString message;

     switch (currentId()) {
     case Page_Intro:
         message = tr("The decision you make here will affect which page you "
                      "get to see next.");
         break;
     case Page_Evaluate:
         message = tr("Make sure to provide a valid email address, such as "
                      "[email protected].");
         break;
     case Page_Register:
         message = tr("If you don't provide an upgrade key, you will be "
                      "asked to fill in your details.");
         break;
     case Page_Details:
         message = tr("Make sure to provide a valid email address, such as "
                      "[email protected].");
         break;
     case Page_Conclusion:
         message = tr("You must accept the terms and conditions of the "
                      "license to proceed.");
         break;
     default:
         message = tr("This help is likely not to be of any help.");
     }

     if (lastHelpMessage == message)
         message = tr("Sorry, I already gave what help I could. "
                      "Maybe you should try asking a human?");

     QMessageBox::information(this, tr("License Wizard Help"), message);

     lastHelpMessage = message;
 }

 IntroPage::IntroPage(QWidget *parent)
     : QWizardPage(parent)
 {
     setTitle(tr("Introduction"));
     setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark.png"));

     topLabel = new QLabel(tr("This wizard will help you register your copy of "
                              "<i>Super Product One</i>&trade; or start "
                              "evaluating the product."));
     topLabel->setWordWrap(true);

     registerRadioButton = new QRadioButton(tr("&Register your copy"));
     evaluateRadioButton = new QRadioButton(tr("&Evaluate the product for 30 "
                                               "days"));
     registerRadioButton->setChecked(true);

     QVBoxLayout *layout = new QVBoxLayout;
     layout->addWidget(topLabel);
     layout->addWidget(registerRadioButton);
     layout->addWidget(evaluateRadioButton);
     setLayout(layout);
 }

 int IntroPage::nextId() const
 {
     if (evaluateRadioButton->isChecked()) {
         return LicenseWizard::Page_Evaluate;
     } else {
         return LicenseWizard::Page_Register;
     }
 }

 EvaluatePage::EvaluatePage(QWidget *parent)
     : QWizardPage(parent)
 {
     setTitle(tr("Evaluate <i>Super Product One</i>&trade;"));
     setSubTitle(tr("Please fill both fields. Make sure to provide a valid "
                    "email address (e.g., [email protected])."));

     nameLabel = new QLabel(tr("N&ame:"));
     nameLineEdit = new QLineEdit;
     nameLabel->setBuddy(nameLineEdit);

     emailLabel = new QLabel(tr("&Email address:"));
     emailLineEdit = new QLineEdit;
     emailLineEdit->setValidator(new QRegExpValidator(QRegExp(".*@.*"), this));
     emailLabel->setBuddy(emailLineEdit);

     registerField("evaluate.name*", nameLineEdit);
     registerField("evaluate.email*", emailLineEdit);

     QGridLayout *layout = new QGridLayout;
     layout->addWidget(nameLabel, 0, 0);
     layout->addWidget(nameLineEdit, 0, 1);
     layout->addWidget(emailLabel, 1, 0);
     layout->addWidget(emailLineEdit, 1, 1);
     setLayout(layout);
 }

 int EvaluatePage::nextId() const
 {
     return LicenseWizard::Page_Conclusion;
 }

 RegisterPage::RegisterPage(QWidget *parent)
     : QWizardPage(parent)
 {
     setTitle(tr("Register Your Copy of <i>Super Product One</i>&trade;"));
     setSubTitle(tr("If you have an upgrade key, please fill in "
                    "the appropriate field."));

     nameLabel = new QLabel(tr("N&ame:"));
     nameLineEdit = new QLineEdit;
     nameLabel->setBuddy(nameLineEdit);

     upgradeKeyLabel = new QLabel(tr("&Upgrade key:"));
     upgradeKeyLineEdit = new QLineEdit;
     upgradeKeyLabel->setBuddy(upgradeKeyLineEdit);

     registerField("register.name*", nameLineEdit);
     registerField("register.upgradeKey", upgradeKeyLineEdit);

     QGridLayout *layout = new QGridLayout;
     layout->addWidget(nameLabel, 0, 0);
     layout->addWidget(nameLineEdit, 0, 1);
     layout->addWidget(upgradeKeyLabel, 1, 0);
     layout->addWidget(upgradeKeyLineEdit, 1, 1);
     setLayout(layout);
 }

 int RegisterPage::nextId() const
 {
     if (upgradeKeyLineEdit->text().isEmpty()) {
         return LicenseWizard::Page_Details;
     } else {
         return LicenseWizard::Page_Conclusion;
     }
 }

 DetailsPage::DetailsPage(QWidget *parent)
     : QWizardPage(parent)
 {
     setTitle(tr("Fill In Your Details"));
     setSubTitle(tr("Please fill all three fields. Make sure to provide a valid "
                    "email address (e.g., [email protected])."));

     companyLabel = new QLabel(tr("&Company name:"));
     companyLineEdit = new QLineEdit;
     companyLabel->setBuddy(companyLineEdit);

     emailLabel = new QLabel(tr("&Email address:"));
     emailLineEdit = new QLineEdit;
     emailLineEdit->setValidator(new QRegExpValidator(QRegExp(".*@.*"), this));
     emailLabel->setBuddy(emailLineEdit);

     postalLabel = new QLabel(tr("&Postal address:"));
     postalLineEdit = new QLineEdit;
     postalLabel->setBuddy(postalLineEdit);

     registerField("details.company*", companyLineEdit);
     registerField("details.email*", emailLineEdit);
     registerField("details.postal*", postalLineEdit);

     QGridLayout *layout = new QGridLayout;
     layout->addWidget(companyLabel, 0, 0);
     layout->addWidget(companyLineEdit, 0, 1);
     layout->addWidget(emailLabel, 1, 0);
     layout->addWidget(emailLineEdit, 1, 1);
     layout->addWidget(postalLabel, 2, 0);
     layout->addWidget(postalLineEdit, 2, 1);
     setLayout(layout);
 }

 int DetailsPage::nextId() const
 {
     return LicenseWizard::Page_Conclusion;
 }

 ConclusionPage::ConclusionPage(QWidget *parent)
     : QWizardPage(parent)
 {
     setTitle(tr("Complete Your Registration"));
     setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark.png"));

     bottomLabel = new QLabel;
     bottomLabel->setWordWrap(true);

     agreeCheckBox = new QCheckBox(tr("I agree to the terms of the license"));

     registerField("conclusion.agree*", agreeCheckBox);

     QVBoxLayout *layout = new QVBoxLayout;
     layout->addWidget(bottomLabel);
     layout->addWidget(agreeCheckBox);
     setLayout(layout);
 }

 int ConclusionPage::nextId() const
 {
     return -1;
 }

 void ConclusionPage::initializePage()
 {
     QString licenseText;

     if (wizard()->hasVisitedPage(LicenseWizard::Page_Evaluate)) {
         licenseText = tr("<u>Evaluation License Agreement:</u> "
                          "You can use this software for 30 days and make one "
                          "backup, but you are not allowed to distribute it.");
     } else if (wizard()->hasVisitedPage(LicenseWizard::Page_Details)) {
         licenseText = tr("<u>First-Time License Agreement:</u> "
                          "You can use this software subject to the license "
                          "you will receive by email.");
     } else {
         licenseText = tr("<u>Upgrade License Agreement:</u> "
                          "This software is licensed under the terms of your "
                          "current license.");
     }
     bottomLabel->setText(licenseText);
 }

 void ConclusionPage::setVisible(bool visible)
 {
     QWizardPage::setVisible(visible);

     if (visible) {
         wizard()->setButtonText(QWizard::CustomButton1, tr("&Print"));
         wizard()->setOption(QWizard::HaveCustomButton1, true);
         connect(wizard(), SIGNAL(customButtonClicked(int)),
                 this, SLOT(printButtonClicked()));
     } else {
         wizard()->setOption(QWizard::HaveCustomButton1, false);
         disconnect(wizard(), SIGNAL(customButtonClicked(int)),
                    this, SLOT(printButtonClicked()));
     }
 }

 void ConclusionPage::printButtonClicked()
 {
     QPrinter printer;
     QPrintDialog dialog(&printer, this);
     if (dialog.exec())
         QMessageBox::warning(this, tr("Print License"),
                              tr("As an environmentally friendly measure, the "
                                 "license text will not actually be printed."));
 }