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# Code for Extension Example

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    package com.trolltech.examples;

    import com.trolltech.qt.core.*;
    import com.trolltech.qt.gui.*;

    @QtJambiExample (name = "Extension")
    public class ExtensionDialog extends QDialog
    {
        private QLabel label;
        private QLineEdit lineEdit;
        private QCheckBox caseCheckBox;
        private QCheckBox fromStartCheckBox;
        private QCheckBox wholeWordsCheckBox;
        private QCheckBox searchSelectionCheckBox;
        private QCheckBox backwardCheckBox;
        private QDialogButtonBox buttonBox;
        private QPushButton findButton;
        private QPushButton moreButton;
        private QWidget extension;

        public ExtensionDialog()
        {
            label = new QLabel(tr("Find &what:"));
            lineEdit = new QLineEdit();
            label.setBuddy(lineEdit);

            caseCheckBox = new QCheckBox(tr("Match &case"));
            fromStartCheckBox = new QCheckBox(tr("Search from &start"));
            fromStartCheckBox.setChecked(true);

            findButton = new QPushButton(tr("&Find"));
            findButton.setDefault(true);

            moreButton = new QPushButton(tr("&More"));
            moreButton.setCheckable(true);
            moreButton.setAutoDefault(false);

            buttonBox = new QDialogButtonBox(Qt.Orientation.Vertical);
            buttonBox.addButton(findButton, QDialogButtonBox.ButtonRole.ActionRole);
            buttonBox.addButton(moreButton, QDialogButtonBox.ButtonRole.ActionRole);

            extension = new QWidget();

            wholeWordsCheckBox = new QCheckBox(tr("&Whole words"));
            backwardCheckBox = new QCheckBox(tr("Search &backward"));
            searchSelectionCheckBox = new QCheckBox(tr("Search se&lection"));

            moreButton.toggled.connect(extension, "setVisible(boolean)");

            QVBoxLayout extensionLayout = new QVBoxLayout();
            extensionLayout.setMargin(0);
            extensionLayout.addWidget(wholeWordsCheckBox);
            extensionLayout.addWidget(backwardCheckBox);
            extensionLayout.addWidget(searchSelectionCheckBox);
            extension.setLayout(extensionLayout);

            QHBoxLayout topLeftLayout = new QHBoxLayout();
            topLeftLayout.addWidget(label);
            topLeftLayout.addWidget(lineEdit);

            QVBoxLayout leftLayout = new QVBoxLayout();
            leftLayout.addLayout(topLeftLayout);
            leftLayout.addWidget(caseCheckBox);
            leftLayout.addWidget(fromStartCheckBox);
            leftLayout.addStretch(1);

            QGridLayout mainLayout = new QGridLayout();
            mainLayout.setSizeConstraint(QLayout.SizeConstraint.SetFixedSize);
            mainLayout.addLayout(leftLayout, 0, 0);
            mainLayout.addWidget(buttonBox, 0, 1);
            mainLayout.addWidget(extension, 1, 0, 1, 2);
            setLayout(mainLayout);

            setWindowTitle(tr("Extension"));
            extension.hide();
        }

        public static void main(String args[])
        {
            QApplication.initialize(args);

            new ExtensionDialog().show();

            QApplication.exec();
        }
    }