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# classwizard.cpp Example File
dialogs/simplewizard/classwizard.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 "classwizard.h"

        ClassWizard::ClassWizard(QWidget *parent)
            : SimpleWizard(parent)
        {
            setNumPages(3);
        }

        QWidget *ClassWizard::createPage(int index)
        {
            switch (index) {
            case 0:
                firstPage = new FirstPage(this);
                return firstPage;
            case 1:
                secondPage = new SecondPage(this);
                return secondPage;
            case 2:
                thirdPage = new ThirdPage(this);
                return thirdPage;
            }
            return 0;
        }

        void ClassWizard::accept()
        {
            QByteArray className = firstPage->classNameLineEdit->text().toAscii();
            QByteArray baseClass = firstPage->baseClassLineEdit->text().toAscii();
            bool qobjectMacro = firstPage->qobjectMacroCheckBox->isChecked();
            bool qobjectCtor = firstPage->qobjectCtorRadioButton->isChecked();
            bool qwidgetCtor = firstPage->qwidgetCtorRadioButton->isChecked();
            bool defaultCtor = firstPage->defaultCtorRadioButton->isChecked();
            bool copyCtor = firstPage->copyCtorCheckBox->isChecked();

            bool comment = secondPage->commentCheckBox->isChecked();
            bool protect = secondPage->protectCheckBox->isChecked();
            QByteArray macroName = secondPage->macroNameLineEdit->text().toAscii();
            bool includeBase = secondPage->includeBaseCheckBox->isChecked();
            QByteArray baseInclude = secondPage->baseIncludeLineEdit->text().toAscii();

            QString outputDir = thirdPage->outputDirLineEdit->text();
            QString header = thirdPage->headerLineEdit->text();
            QString implementation = thirdPage->implementationLineEdit->text();

            QByteArray block;

            if (comment) {
                block += "/*\n";
                block += "    " + header.toAscii() + "\n";
                block += "*/\n";
                block += "\n";
            }
            if (protect) {
                block += "#ifndef " + macroName + "\n";
                block += "#define " + macroName + "\n";
                block += "\n";
            }
            if (includeBase) {
                block += "#include " + baseInclude + "\n";
                block += "\n";
            }

            block += "class " + className;
            if (!baseClass.isEmpty())
                block += " : public " + baseClass;
            block += "\n";
            block += "{\n";

            /* qmake ignore Q_OBJECT */

            if (qobjectMacro) {
                block += "    Q_OBJECT\n";
                block += "\n";
            }
            block += "public:\n";

            if (qobjectCtor) {
                block += "    " + className + "(QObject *parent);\n";
            } else if (qwidgetCtor) {
                block += "    " + className + "(QWidget *parent);\n";
            } else if (defaultCtor) {
                block += "    " + className + "();\n";
                if (copyCtor) {
                    block += "    " + className + "(const " + className + " &other);\n";
                    block += "\n";
                    block += "    " + className + " &operator=" + "(const " + className
                             + " &other);\n";
                }
            }
            block += "};\n";

            if (protect) {
                block += "\n";
                block += "#endif\n";
            }

            QFile headerFile(outputDir + "/" + header);
            if (!headerFile.open(QFile::WriteOnly | QFile::Text)) {
                QMessageBox::warning(this, tr("Simple Wizard"),
                                     tr("Cannot write file %1:\n%2")
                                     .arg(headerFile.fileName())
                                     .arg(headerFile.errorString()));
                return;
            }
            headerFile.write(block);

            block.clear();

            if (comment) {
                block += "/*\n";
                block += "    " + implementation.toAscii() + "\n";
                block += "*/\n";
                block += "\n";
            }
            block += "#include \"" + header.toAscii() + "\"\n";
            block += "\n";

            if (qobjectCtor) {
                block += className + "::" + className + "(QObject *parent)\n";
                block += "    : " + baseClass + "(parent)\n";
                block += "{\n";
                block += "}\n";
            } else if (qwidgetCtor) {
                block += className + "::" + className + "(QWidget *parent)\n";
                block += "    : " + baseClass + "(parent)\n";
                block += "{\n";
                block += "}\n";
            } else if (defaultCtor) {
                block += className + "::" + className + "()\n";
                block += "{\n";
                block += "    // missing code\n";
                block += "}\n";

                if (copyCtor) {
                    block += "\n";
                    block += className + "::" + className + "(const " + className
                             + " &other)\n";
                    block += "{\n";
                    block += "    *this = other;\n";
                    block += "}\n";
                    block += "\n";
                    block += className + " &" + className + "::operator=(const "
                             + className + " &other)\n";
                    block += "{\n";
                    if (!baseClass.isEmpty())
                        block += "    " + baseClass + "::operator=(other);\n";
                    block += "    // missing code\n";
                    block += "    return *this;\n";
                    block += "}\n";
                }
            }

            QFile implementationFile(outputDir + "/" + implementation);
            if (!implementationFile.open(QFile::WriteOnly | QFile::Text)) {
                QMessageBox::warning(this, tr("Simple Wizard"),
                                     tr("Cannot write file %1:\n%2")
                                     .arg(implementationFile.fileName())
                                     .arg(implementationFile.errorString()));
                return;
            }
            implementationFile.write(block);

            QDialog::accept();
        }

        FirstPage::FirstPage(ClassWizard *wizard)
            : QWidget(wizard)
        {
            topLabel = new QLabel(tr("<center><b>Class information</b></center>"
                                     "<p>This wizard will generate a skeleton class "
                                     "definition and member function definitions."));
            topLabel->setWordWrap(false);

            classNameLabel = new QLabel(tr("Class &name:"));
            classNameLineEdit = new QLineEdit;
            classNameLabel->setBuddy(classNameLineEdit);
            setFocusProxy(classNameLineEdit);

            baseClassLabel = new QLabel(tr("&Base class:"));
            baseClassLineEdit = new QLineEdit;
            baseClassLabel->setBuddy(baseClassLineEdit);

            qobjectMacroCheckBox = new QCheckBox(tr("&Generate Q_OBJECT macro"));

            groupBox = new QGroupBox(tr("&Constructor"));

            qobjectCtorRadioButton = new QRadioButton(tr("&QObject-style constructor"));
            qwidgetCtorRadioButton = new QRadioButton(tr("Q&Widget-style constructor"));
            defaultCtorRadioButton = new QRadioButton(tr("&Default constructor"));
            copyCtorCheckBox = new QCheckBox(tr("&Also generate copy constructor and "
                                                "assignment operator"));

            defaultCtorRadioButton->setChecked(true);

            connect(classNameLineEdit, SIGNAL(textChanged(const QString &)),
                    this, SLOT(classNameChanged()));
            connect(defaultCtorRadioButton, SIGNAL(toggled(bool)),
                    copyCtorCheckBox, SLOT(setEnabled(bool)));

            wizard->setButtonEnabled(false);

            QVBoxLayout *groupBoxLayout = new QVBoxLayout;
            groupBoxLayout->addWidget(qobjectCtorRadioButton);
            groupBoxLayout->addWidget(qwidgetCtorRadioButton);
            groupBoxLayout->addWidget(defaultCtorRadioButton);
            groupBoxLayout->addWidget(copyCtorCheckBox);
            groupBox->setLayout(groupBoxLayout);

            QGridLayout *layout = new QGridLayout;
            layout->addWidget(topLabel, 0, 0, 1, 2);
            layout->setRowMinimumHeight(1, 10);
            layout->addWidget(classNameLabel, 2, 0);
            layout->addWidget(classNameLineEdit, 2, 1);
            layout->addWidget(baseClassLabel, 3, 0);
            layout->addWidget(baseClassLineEdit, 3, 1);
            layout->addWidget(qobjectMacroCheckBox, 4, 0, 1, 2);
            layout->addWidget(groupBox, 5, 0, 1, 2);
            layout->setRowStretch(6, 1);
            setLayout(layout);
        }

        void FirstPage::classNameChanged()
        {
            ClassWizard *wizard = qobject_cast<ClassWizard *>(parent());
            wizard->setButtonEnabled(!classNameLineEdit->text().isEmpty());
        }

        SecondPage::SecondPage(ClassWizard *wizard)
            : QWidget(wizard)
        {
            topLabel = new QLabel(tr("<center><b>Code style options</b></center>"));

            commentCheckBox = new QCheckBox(tr("&Start generated files with a comment"));
            commentCheckBox->setChecked(true);
            setFocusProxy(commentCheckBox);

            protectCheckBox = new QCheckBox(tr("&Protect header file against multiple "
                                               "inclusions"));
            protectCheckBox->setChecked(true);

            macroNameLabel = new QLabel(tr("&Macro name:"));
            macroNameLineEdit = new QLineEdit;
            macroNameLabel->setBuddy(macroNameLineEdit);

            includeBaseCheckBox = new QCheckBox(tr("&Include base class definition"));
            baseIncludeLabel = new QLabel(tr("Base class include:"));
            baseIncludeLineEdit = new QLineEdit;
            baseIncludeLabel->setBuddy(baseIncludeLineEdit);

            QString className = wizard->firstPage->classNameLineEdit->text();
            macroNameLineEdit->setText(className.toUpper() + "_H");

            QString baseClass = wizard->firstPage->baseClassLineEdit->text();
            if (baseClass.isEmpty()) {
                includeBaseCheckBox->setEnabled(false);
                baseIncludeLabel->setEnabled(false);
                baseIncludeLineEdit->setEnabled(false);
            } else {
                includeBaseCheckBox->setChecked(true);
                if (QRegExp("Q[A-Z].*").exactMatch(baseClass)) {
                    baseIncludeLineEdit->setText("<" + baseClass + ">");
                } else {
                    baseIncludeLineEdit->setText("\"" + baseClass.toLower() + ".h\"");
                }
            }

            connect(protectCheckBox, SIGNAL(toggled(bool)),
                    macroNameLabel, SLOT(setEnabled(bool)));
            connect(protectCheckBox, SIGNAL(toggled(bool)),
                    macroNameLineEdit, SLOT(setEnabled(bool)));
            connect(includeBaseCheckBox, SIGNAL(toggled(bool)),
                    baseIncludeLabel, SLOT(setEnabled(bool)));
            connect(includeBaseCheckBox, SIGNAL(toggled(bool)),
                    baseIncludeLineEdit, SLOT(setEnabled(bool)));

            QGridLayout *layout = new QGridLayout;
            layout->setColumnMinimumWidth(0, 20);
            layout->addWidget(topLabel, 0, 0, 1, 3);
            layout->setRowMinimumHeight(1, 10);
            layout->addWidget(commentCheckBox, 2, 0, 1, 3);
            layout->addWidget(protectCheckBox, 3, 0, 1, 3);
            layout->addWidget(macroNameLabel, 4, 1);
            layout->addWidget(macroNameLineEdit, 4, 2);
            layout->addWidget(includeBaseCheckBox, 5, 0, 1, 3);
            layout->addWidget(baseIncludeLabel, 6, 1);
            layout->addWidget(baseIncludeLineEdit, 6, 2);
            layout->setRowStretch(7, 1);
            setLayout(layout);
        }

        ThirdPage::ThirdPage(ClassWizard *wizard)
            : QWidget(wizard)
        {
            topLabel = new QLabel(tr("<center><b>Output files</b></center>"));

            outputDirLabel = new QLabel(tr("&Output directory:"));
            outputDirLineEdit = new QLineEdit;
            outputDirLabel->setBuddy(outputDirLineEdit);
            setFocusProxy(outputDirLineEdit);

            headerLabel = new QLabel(tr("&Header file name:"));
            headerLineEdit = new QLineEdit;
            headerLabel->setBuddy(headerLineEdit);

            implementationLabel = new QLabel(tr("&Implementation file name:"));
            implementationLineEdit = new QLineEdit;
            implementationLabel->setBuddy(implementationLineEdit);

            QString className = wizard->firstPage->classNameLineEdit->text();
            headerLineEdit->setText(className.toLower() + ".h");
            implementationLineEdit->setText(className.toLower() + ".cpp");
            outputDirLineEdit->setText(QDir::convertSeparators(QDir::homePath()));

            QGridLayout *layout = new QGridLayout;
            layout->addWidget(topLabel, 0, 0, 1, 2);
            layout->setRowMinimumHeight(1, 10);
            layout->addWidget(outputDirLabel, 2, 0);
            layout->addWidget(outputDirLineEdit, 2, 1);
            layout->addWidget(headerLabel, 3, 0);
            layout->addWidget(headerLineEdit, 3, 1);
            layout->addWidget(implementationLabel, 4, 0);
            layout->addWidget(implementationLineEdit, 4, 1);
            layout->setRowStretch(5, 1);
            setLayout(layout);
        }