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# licensewizard.cpp Example File
dialogs/complexwizard/licensewizard.cpp

        /****************************************************************************
        **
        ** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be used under the terms of the GNU General Public
        ** License version 2.0 as published by the Free Software Foundation
        ** and appearing in the file LICENSE.GPL included in the packaging of
        ** this file.  Please review the following information to ensure GNU
        ** General Public Licensing requirements will be met:
        ** http://www.trolltech.com/products/qt/opensource.html
        **
        ** If you are unsure which license is appropriate for your use, please
        ** review the following information:
        ** http://www.trolltech.com/products/qt/licensing.html or contact the
        ** sales department at sales@trolltech.com.
        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #include <QtGui>

        #include "licensewizard.h"

        LicenseWizard::LicenseWizard(QWidget *parent)
            : ComplexWizard(parent)
        {
            titlePage = new TitlePage(this);
            evaluatePage = new EvaluatePage(this);
            registerPage = new RegisterPage(this);
            detailsPage = new DetailsPage(this);
            finishPage = new FinishPage(this);

            setFirstPage(titlePage);

            setWindowTitle(tr("Complex Wizard"));
            resize(480, 200);
        }

        TitlePage::TitlePage(LicenseWizard *wizard)
            : LicenseWizardPage(wizard)
        {
            topLabel = new QLabel(tr("<center><font color=\"blue\" size=\"5\"><b><i>"
                                     "Super Product One</i></b></font></center>"));

            registerRadioButton = new QRadioButton(tr("&Register your copy"));
            evaluateRadioButton = new QRadioButton(tr("&Evaluate our product"));
            setFocusProxy(registerRadioButton);

            QVBoxLayout *layout = new QVBoxLayout;
            layout->addWidget(topLabel);
            layout->addSpacing(10);
            layout->addWidget(registerRadioButton);
            layout->addWidget(evaluateRadioButton);
            layout->addStretch(1);
            setLayout(layout);
        }

        void TitlePage::resetPage()
        {
            registerRadioButton->setChecked(true);
        }

        WizardPage *TitlePage::nextPage()
        {
            if (evaluateRadioButton->isChecked())
                return wizard->evaluatePage;
            else
                return wizard->registerPage;
        }

        EvaluatePage::EvaluatePage(LicenseWizard *wizard)
            : LicenseWizardPage(wizard)
        {
            topLabel = new QLabel(tr("<center><b>Evaluate Super Product One"
                                     "</b></center>"));

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

            emailLabel = new QLabel(tr("&Email address:"));
            emailLineEdit = new QLineEdit;
            emailLabel->setBuddy(emailLineEdit);

            bottomLabel = new QLabel(tr("Please fill in both fields.\nThis will "
                                        "entitle you to a 30-day evaluation."));

            connect(nameLineEdit, SIGNAL(textChanged(QString)),
                    this, SIGNAL(completeStateChanged()));
            connect(emailLineEdit, SIGNAL(textChanged(QString)),
                    this, SIGNAL(completeStateChanged()));

            QGridLayout *layout = new QGridLayout;
            layout->addWidget(topLabel, 0, 0, 1, 2);
            layout->setRowMinimumHeight(1, 10);
            layout->addWidget(nameLabel, 2, 0);
            layout->addWidget(nameLineEdit, 2, 1);
            layout->addWidget(emailLabel, 3, 0);
            layout->addWidget(emailLineEdit, 3, 1);
            layout->setRowMinimumHeight(4, 10);
            layout->addWidget(bottomLabel, 5, 0, 1, 2);
            layout->setRowStretch(6, 1);
            setLayout(layout);
        }

        void EvaluatePage::resetPage()
        {
            nameLineEdit->clear();
            emailLineEdit->clear();
        }

        WizardPage *EvaluatePage::nextPage()
        {
            return wizard->finishPage;
        }

        bool EvaluatePage::isComplete()
        {
            return !nameLineEdit->text().isEmpty() && !emailLineEdit->text().isEmpty();
        }

        RegisterPage::RegisterPage(LicenseWizard *wizard)
            : LicenseWizardPage(wizard)
        {
            topLabel = new QLabel(tr("<center><b>Register your copy of Super Product "
                                     "One</b></center>"));

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

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

            bottomLabel = new QLabel(tr("If you have an upgrade key, please fill in "
                                        "the appropriate field."));

            connect(nameLineEdit, SIGNAL(textChanged(QString)),
                    this, SIGNAL(completeStateChanged()));

            QGridLayout *layout = new QGridLayout;
            layout->addWidget(topLabel, 0, 0, 1, 2);
            layout->setRowMinimumHeight(1, 10);
            layout->addWidget(nameLabel, 2, 0);
            layout->addWidget(nameLineEdit, 2, 1);
            layout->addWidget(upgradeKeyLabel, 3, 0);
            layout->addWidget(upgradeKeyLineEdit, 3, 1);
            layout->setRowMinimumHeight(4, 10);
            layout->addWidget(bottomLabel, 5, 0, 1, 2);
            layout->setRowStretch(6, 1);
            setLayout(layout);
        }

        void RegisterPage::resetPage()
        {
            nameLineEdit->clear();
            upgradeKeyLineEdit->clear();
        }

        WizardPage *RegisterPage::nextPage()
        {
            if (upgradeKeyLineEdit->text().isEmpty())
                return wizard->detailsPage;
            else
                return wizard->finishPage;
        }

        bool RegisterPage::isComplete()
        {
            return !nameLineEdit->text().isEmpty();
        }

        DetailsPage::DetailsPage(LicenseWizard *wizard)
            : LicenseWizardPage(wizard)
        {
            topLabel = new QLabel(tr("<center><b>Fill in your details</b></center>"));

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

            emailLabel = new QLabel(tr("&Email address:"));
            emailLineEdit = new QLineEdit;
            emailLabel->setBuddy(emailLineEdit);

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

            connect(companyLineEdit, SIGNAL(textChanged(QString)),
                    this, SIGNAL(completeStateChanged()));
            connect(emailLineEdit, SIGNAL(textChanged(QString)),
                    this, SIGNAL(completeStateChanged()));
            connect(postalLineEdit, SIGNAL(textChanged(QString)),
                    this, SIGNAL(completeStateChanged()));

            QGridLayout *layout = new QGridLayout;
            layout->addWidget(topLabel, 0, 0, 1, 2);
            layout->setRowMinimumHeight(1, 10);
            layout->addWidget(companyLabel, 2, 0);
            layout->addWidget(companyLineEdit, 2, 1);
            layout->addWidget(emailLabel, 3, 0);
            layout->addWidget(emailLineEdit, 3, 1);
            layout->addWidget(postalLabel, 4, 0);
            layout->addWidget(postalLineEdit, 4, 1);
            layout->setRowStretch(5, 1);
            setLayout(layout);
        }

        void DetailsPage::resetPage()
        {
            companyLineEdit->clear();
            emailLineEdit->clear();
            postalLineEdit->clear();
        }

        WizardPage *DetailsPage::nextPage()
        {
            return wizard->finishPage;
        }

        bool DetailsPage::isComplete()
        {
            return !companyLineEdit->text().isEmpty()
                   && !emailLineEdit->text().isEmpty()
                   && !postalLineEdit->text().isEmpty();
        }

        FinishPage::FinishPage(LicenseWizard *wizard)
            : LicenseWizardPage(wizard)
        {
            topLabel = new QLabel(tr("<center><b>Complete your registration"
                                     "</b></center>"));

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

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

            connect(agreeCheckBox, SIGNAL(toggled(bool)),
                    this, SIGNAL(completeStateChanged()));

            QVBoxLayout *layout = new QVBoxLayout;
            layout->addWidget(topLabel);
            layout->addSpacing(10);
            layout->addWidget(bottomLabel);
            layout->addWidget(agreeCheckBox);
            layout->addStretch(1);
            setLayout(layout);
        }

        void FinishPage::resetPage()
        {
            QString licenseText;

            if (wizard->historyPages().contains(wizard->evaluatePage)) {
                licenseText = tr("Evaluation License Agreement: "
                                 "You can use this software for 30 days and make one "
                                 "back up, but you are not allowed to distribute it.");
            } else if (wizard->historyPages().contains(wizard->detailsPage)) {
                licenseText = tr("First-Time License Agreement: "
                                 "You can use this software subject to the license "
                                 "you will receive by email.");
            } else {
                licenseText = tr("Upgrade License Agreement: "
                                 "This software is licensed under the terms of your "
                                 "current license.");
            }
            bottomLabel->setText(licenseText);
            agreeCheckBox->setChecked(false);
        }

        bool FinishPage::isComplete()
        {
            return agreeCheckBox->isChecked();
        }