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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);
    }


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