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# Code for Find Files Example

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    **
    ** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
    **
    ** This file is part of Qt Jambi.
    **
    ** ** 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:
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    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ****************************************************************************/

    package com.trolltech.examples;

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

    import java.util.*;

    @QtJambiExample (name = "Find Files")
    public class FindFiles extends QDialog
    {
        private QComboBox fileComboBox;
        private QComboBox textComboBox;
        private QComboBox directoryComboBox;
        private QLabel fileLabel;
        private QLabel textLabel;
        private QLabel directoryLabel;
        private QLabel filesFoundLabel;
        private QPushButton browseButton;
        private QPushButton findButton;
        private QTableWidget filesTable;

        public FindFiles()
        {
            browseButton = createButton(tr("&Browse..."), "browse()");
            findButton = createButton(tr("&Find"), "find()");

            fileComboBox = createComboBox(tr("*"));
            textComboBox = createComboBox("");
            directoryComboBox = createComboBox(QDir.currentPath());

            fileLabel = new QLabel(tr("Named:"));
            textLabel = new QLabel(tr("Containing text:"));
            directoryLabel = new QLabel(tr("In directory:"));
            filesFoundLabel = new QLabel();

            createFilesTable();

            QHBoxLayout buttonsLayout = new QHBoxLayout();
            buttonsLayout.addStretch();
            buttonsLayout.addWidget(findButton);

            QGridLayout mainLayout = new QGridLayout();
            mainLayout.addWidget(fileLabel, 0, 0);
            mainLayout.addWidget(fileComboBox, 0, 1, 1, 2);
            mainLayout.addWidget(textLabel, 1, 0);
            mainLayout.addWidget(textComboBox, 1, 1, 1, 2);
            mainLayout.addWidget(directoryLabel, 2, 0);
            mainLayout.addWidget(directoryComboBox, 2, 1);
            mainLayout.addWidget(browseButton, 2, 2);
            mainLayout.addWidget(filesTable, 3, 0, 1, 3);
            mainLayout.addWidget(filesFoundLabel, 4, 0);
            mainLayout.addLayout(buttonsLayout, 5, 0, 1, 3);
            setLayout(mainLayout);

            setWindowTitle(tr("Find Files"));
            resize(700, 300);
        }

        private void browse()
        {
            String directory = QFileDialog.getExistingDirectory(this,
                                       tr("Find Files"), QDir.currentPath());
            if (!directory.equals("")) {
                directoryComboBox.addItem(directory);
                directoryComboBox.setCurrentIndex(directoryComboBox.currentIndex() + 1);
            }
        }

        private void find()
        {
            filesTable.setRowCount(0);

            String fileName = fileComboBox.currentText();
            String text = textComboBox.currentText();
            String path = directoryComboBox.currentText();

            QDir directory = new QDir(path);
            List<String> files = new LinkedList<String>();

            if (fileName.equals(""))
                fileName = "*";

            List<String> entries = new LinkedList<String>();
            entries.add(fileName);

            files = directory.entryList(entries,
                new QDir.Filters(QDir.Filter.Files, QDir.Filter.NoSymLinks));

            if (!text.equals(""))
                files = findFiles(directory, files, text);
            showFiles(directory, files);
        }

        private List<String> findFiles(QDir directory, List<String> files,
                                       String text)
        {
            QProgressDialog progressDialog = new QProgressDialog(this);
            progressDialog.setCancelButtonText(tr("&Cancel"));
            progressDialog.setRange(0, files.size());
            progressDialog.setWindowTitle(tr("Find Files"));

            List<String> foundFiles = new LinkedList<String>();

            for (int i = 0; i < files.size(); ++i) {
                progressDialog.setValue(i);
                progressDialog.setLabelText(tr("Searching file number "+i+
                                               " of "+files.size()+"..."));
                QApplication.processEvents();

                if (progressDialog.wasCanceled())
                    break;

                QFile file = new QFile(directory.absoluteFilePath(files.get(i)));

                if (file.open(QIODevice.OpenModeFlag.ReadOnly)) {
                    String line = "";
                    QTextStream in = new QTextStream(file);
                    while (!in.atEnd()) {
                        if (progressDialog.wasCanceled())
                            break;
                        line = in.readLine();
                        if (line.contains(text)) {
                            foundFiles.add(files.get(i));
                            break;
                        }
                    }
                }
            }
            return foundFiles;
        }

        private void showFiles(QDir directory, List<String> files)
        {
            for (int i = 0; i < files.size(); ++i) {
                QFile file = new QFile(directory.absoluteFilePath(files.get(i)));
                long size = new QFileInfo(file).size();

                QTableWidgetItem fileNameItem = new QTableWidgetItem(files.get(i));
                fileNameItem.setFlags(Qt.ItemFlag.ItemIsEnabled);
                QTableWidgetItem sizeItem =
                    new QTableWidgetItem("" + ((size + 1023) / 1024) + tr("KB"));
                sizeItem.setTextAlignment(new Qt.Alignment(Qt.AlignmentFlag.AlignRight,
                                                           Qt.AlignmentFlag.AlignVCenter).value());
                sizeItem.setFlags(Qt.ItemFlag.ItemIsEnabled);

                int row = filesTable.rowCount();
                filesTable.insertRow(row);
                filesTable.setItem(row, 0, fileNameItem);
                filesTable.setItem(row, 1, sizeItem);
            }
            filesFoundLabel.setText("" + files.size() + tr("file(s) found."));
        }

        private QPushButton createButton(String text, String goldMember)
        {
            QPushButton button = new QPushButton(text);
            button.clicked.connect(this, goldMember);

            return button;
        }

        private QComboBox createComboBox(String text)
        {
            QComboBox comboBox = new QComboBox();
            comboBox.setEditable(true);
            comboBox.addItem(text);
            comboBox.setSizePolicy(QSizePolicy.Policy.Expanding,
                                   QSizePolicy.Policy.Preferred);

            return comboBox;
        }

        private void createFilesTable()
        {
            filesTable = new QTableWidget(0, 2);

            List<String> labels = new LinkedList<String>();
            labels.add(tr("File Name"));
            labels.add(tr("Size"));

            filesTable.setHorizontalHeaderLabels(labels);
            filesTable.horizontalHeader().setResizeMode(0, QHeaderView.ResizeMode.Stretch);
            filesTable.verticalHeader().hide();
            filesTable.setShowGrid(false);
        }

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

            new FindFiles().show();

            QApplication.exec();
        }
    }