window.cpp Example File
^{widgets/lineedits/window.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 "window.h"

    Window::Window()
    {
        QGroupBox *echoGroup = new QGroupBox(tr("Echo"));

        QLabel *echoLabel = new QLabel(tr("Mode:"));
        QComboBox *echoComboBox = new QComboBox;
        echoComboBox->addItem(tr("Normal"));
        echoComboBox->addItem(tr("Password"));
        echoComboBox->addItem(tr("No Echo"));

        echoLineEdit = new QLineEdit;
        echoLineEdit->setFocus();

        QGroupBox *validatorGroup = new QGroupBox(tr("Validator"));

        QLabel *validatorLabel = new QLabel(tr("Type:"));
        QComboBox *validatorComboBox = new QComboBox;
        validatorComboBox->addItem(tr("No validator"));
        validatorComboBox->addItem(tr("Integer validator"));
        validatorComboBox->addItem(tr("Double validator"));

        validatorLineEdit = new QLineEdit;

        QGroupBox *alignmentGroup = new QGroupBox(tr("Alignment"));

        QLabel *alignmentLabel = new QLabel(tr("Type:"));
        QComboBox *alignmentComboBox = new QComboBox;
        alignmentComboBox->addItem(tr("Left"));
        alignmentComboBox->addItem(tr("Centered"));
        alignmentComboBox->addItem(tr("Right"));

        alignmentLineEdit = new QLineEdit;

        QGroupBox *inputMaskGroup = new QGroupBox(tr("Input mask"));

        QLabel *inputMaskLabel = new QLabel(tr("Type:"));
        QComboBox *inputMaskComboBox = new QComboBox;
        inputMaskComboBox->addItem(tr("No mask"));
        inputMaskComboBox->addItem(tr("Phone number"));
        inputMaskComboBox->addItem(tr("ISO date"));
        inputMaskComboBox->addItem(tr("License key"));

        inputMaskLineEdit = new QLineEdit;

        QGroupBox *accessGroup = new QGroupBox(tr("Access"));

        QLabel *accessLabel = new QLabel(tr("Read-only:"));
        QComboBox *accessComboBox = new QComboBox;
        accessComboBox->addItem(tr("False"));
        accessComboBox->addItem(tr("True"));

        accessLineEdit = new QLineEdit;

        connect(echoComboBox, SIGNAL(activated(int)),
                this, SLOT(slotEchoChanged(int)));
        connect(validatorComboBox, SIGNAL(activated(int)),
                this, SLOT(slotValidatorChanged(int)));
        connect(alignmentComboBox, SIGNAL(activated(int)),
                this, SLOT(slotAlignmentChanged(int)));
        connect(inputMaskComboBox, SIGNAL(activated(int)),
                this, SLOT(slotInputMaskChanged(int)));
        connect(accessComboBox, SIGNAL(activated(int)),
                this, SLOT(slotAccessChanged(int)));

        QGridLayout *echoLayout = new QGridLayout;
        echoLayout->addWidget(echoLabel, 0, 0);
        echoLayout->addWidget(echoComboBox, 0, 1);
        echoLayout->addWidget(echoLineEdit, 1, 0, 1, 2);
        echoGroup->setLayout(echoLayout);

        QGridLayout *validatorLayout = new QGridLayout;
        validatorLayout->addWidget(validatorLabel, 0, 0);
        validatorLayout->addWidget(validatorComboBox, 0, 1);
        validatorLayout->addWidget(validatorLineEdit, 1, 0, 1, 2);
        validatorGroup->setLayout(validatorLayout);

        QGridLayout *alignmentLayout = new QGridLayout;
        alignmentLayout->addWidget(alignmentLabel, 0, 0);
        alignmentLayout->addWidget(alignmentComboBox, 0, 1);
        alignmentLayout->addWidget(alignmentLineEdit, 1, 0, 1, 2);
        alignmentGroup-> setLayout(alignmentLayout);

        QGridLayout *inputMaskLayout = new QGridLayout;
        inputMaskLayout->addWidget(inputMaskLabel, 0, 0);
        inputMaskLayout->addWidget(inputMaskComboBox, 0, 1);
        inputMaskLayout->addWidget(inputMaskLineEdit, 1, 0, 1, 2);
        inputMaskGroup->setLayout(inputMaskLayout);

        QGridLayout *accessLayout = new QGridLayout;
        accessLayout->addWidget(accessLabel, 0, 0);
        accessLayout->addWidget(accessComboBox, 0, 1);
        accessLayout->addWidget(accessLineEdit, 1, 0, 1, 2);
        accessGroup->setLayout(accessLayout);

        QVBoxLayout *layout = new QVBoxLayout;
        layout->addWidget(echoGroup);
        layout->addWidget(validatorGroup);
        layout->addWidget(alignmentGroup);
        layout->addWidget(inputMaskGroup);
        layout->addWidget(accessGroup);
        setLayout(layout);

        setWindowTitle(tr("Line Edits"));
    }

    void Window::slotEchoChanged(int index)
    {
        switch (index) {
            case 0:
                echoLineEdit->setEchoMode(QLineEdit::Normal);
                break;
            case 1:
                echoLineEdit->setEchoMode(QLineEdit::Password);
                break;
            case 2:
                echoLineEdit->setEchoMode(QLineEdit::NoEcho);
                break;
            }
    }

    void Window::slotValidatorChanged(int index)
    {
        switch (index) {
            case 0:
                validatorLineEdit->setValidator(0);
                break;
            case 1:
                validatorLineEdit->setValidator(new QIntValidator(
                    validatorLineEdit));
                break;
            case 2:
                validatorLineEdit->setValidator(new QDoubleValidator(-999.0,
                    999.0, 2, validatorLineEdit));
                break;
        }

        validatorLineEdit->setText("");
    }

    void Window::slotAlignmentChanged(int index)
    {
        switch (index) {
            case 0:
                alignmentLineEdit->setAlignment(Qt::AlignLeft);
                break;
            case 1:
                alignmentLineEdit->setAlignment(Qt::AlignCenter);
                break;
            case 2:
                alignmentLineEdit->setAlignment(Qt::AlignRight);
                break;
            }
    }

    void Window::slotInputMaskChanged(int index)
    {
        switch (index) {
            case 0:
                inputMaskLineEdit->setInputMask(QString());
                break;
            case 1:
                inputMaskLineEdit->setInputMask("+99 99 99 99 99;_");
                break;
            case 2:
                inputMaskLineEdit->setInputMask("0000-00-00");
                inputMaskLineEdit->setText("00000000");
                inputMaskLineEdit->setCursorPosition(0);
                break;
            case 3:
                inputMaskLineEdit->setInputMask(">AAAAA-AAAAA-AAAAA-AAAAA-AAAAA;#");
                break;
        }
    }

    void Window::slotAccessChanged(int index)
    {
        switch (index) {
        case 0:
            accessLineEdit->setReadOnly(false);
            break;
        case 1:
            accessLineEdit->setReadOnly(true);
            break;
        }
    }