examples/dialogs/findfiles/window.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/dialogs/findfiles/window.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,250 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "window.h"
+
+//! [0]
+Window::Window(QWidget *parent)
+    : QDialog(parent)
+{
+    browseButton = createButton(tr("&Browse..."), SLOT(browse()));
+    findButton = createButton(tr("&Find"), SLOT(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();
+//! [0]
+
+//! [1]
+    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);
+}
+//! [1]
+
+//! [2]
+void Window::browse()
+{
+    QString directory = QFileDialog::getExistingDirectory(this,
+                               tr("Find Files"), QDir::currentPath());
+
+    if (!directory.isEmpty()) {
+        if (directoryComboBox->findText(directory) == -1)
+            directoryComboBox->addItem(directory);
+        directoryComboBox->setCurrentIndex(directoryComboBox->findText(directory));
+    }
+}
+//! [2]
+
+static void updateComboBox(QComboBox *comboBox)
+{
+    if (comboBox->findText(comboBox->currentText()) == -1)
+        comboBox->addItem(comboBox->currentText());
+}
+
+//! [3]
+void Window::find()
+{
+    filesTable->setRowCount(0);
+
+    QString fileName = fileComboBox->currentText();
+    QString text = textComboBox->currentText();
+    QString path = directoryComboBox->currentText();
+//! [3]
+
+    updateComboBox(fileComboBox);
+    updateComboBox(textComboBox);
+    updateComboBox(directoryComboBox);
+
+//! [4]
+    currentDir = QDir(path);
+    QStringList files;
+    if (fileName.isEmpty())
+        fileName = "*";
+    files = currentDir.entryList(QStringList(fileName),
+                                 QDir::Files | QDir::NoSymLinks);
+
+    if (!text.isEmpty())
+        files = findFiles(files, text);
+    showFiles(files);
+}
+//! [4]
+
+//! [5]
+QStringList Window::findFiles(const QStringList &files, const QString &text)
+{
+    QProgressDialog progressDialog(this);
+    progressDialog.setCancelButtonText(tr("&Cancel"));
+    progressDialog.setRange(0, files.size());
+    progressDialog.setWindowTitle(tr("Find Files"));
+
+//! [5] //! [6]
+    QStringList foundFiles;
+
+    for (int i = 0; i < files.size(); ++i) {
+        progressDialog.setValue(i);
+        progressDialog.setLabelText(tr("Searching file number %1 of %2...")
+                                    .arg(i).arg(files.size()));
+        qApp->processEvents();
+//! [6]
+
+        if (progressDialog.wasCanceled())
+            break;
+
+//! [7]
+        QFile file(currentDir.absoluteFilePath(files[i]));
+
+        if (file.open(QIODevice::ReadOnly)) {
+            QString line;
+            QTextStream in(&file);
+            while (!in.atEnd()) {
+                if (progressDialog.wasCanceled())
+                    break;
+                line = in.readLine();
+                if (line.contains(text)) {
+                    foundFiles << files[i];
+                    break;
+                }
+            }
+        }
+    }
+    return foundFiles;
+}
+//! [7]
+
+//! [8]
+void Window::showFiles(const QStringList &files)
+{
+    for (int i = 0; i < files.size(); ++i) {
+        QFile file(currentDir.absoluteFilePath(files[i]));
+        qint64 size = QFileInfo(file).size();
+
+        QTableWidgetItem *fileNameItem = new QTableWidgetItem(files[i]);
+        fileNameItem->setFlags(fileNameItem->flags() ^ Qt::ItemIsEditable);
+        QTableWidgetItem *sizeItem = new QTableWidgetItem(tr("%1 KB")
+                                             .arg(int((size + 1023) / 1024)));
+        sizeItem->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
+        sizeItem->setFlags(sizeItem->flags() ^ Qt::ItemIsEditable);
+
+        int row = filesTable->rowCount();
+        filesTable->insertRow(row);
+        filesTable->setItem(row, 0, fileNameItem);
+        filesTable->setItem(row, 1, sizeItem);
+    }
+    filesFoundLabel->setText(tr("%1 file(s) found").arg(files.size()) +
+                             (" (Double click on a file to open it)"));
+}
+//! [8]
+
+//! [9]
+QPushButton *Window::createButton(const QString &text, const char *member)
+{
+    QPushButton *button = new QPushButton(text);
+    connect(button, SIGNAL(clicked()), this, member);
+    return button;
+}
+//! [9]
+
+//! [10]
+QComboBox *Window::createComboBox(const QString &text)
+{
+    QComboBox *comboBox = new QComboBox;
+    comboBox->setEditable(true);
+    comboBox->addItem(text);
+    comboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+    return comboBox;
+}
+//! [10]
+
+//! [11]
+void Window::createFilesTable()
+{
+    filesTable = new QTableWidget(0, 2);
+    filesTable->setSelectionBehavior(QAbstractItemView::SelectRows);
+
+    QStringList labels;
+    labels << tr("File Name") << tr("Size");
+    filesTable->setHorizontalHeaderLabels(labels);
+    filesTable->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);
+    filesTable->verticalHeader()->hide();
+    filesTable->setShowGrid(false);
+
+    connect(filesTable, SIGNAL(cellActivated(int, int)),
+            this, SLOT(openFileOfItem(int, int)));
+}
+//! [11]
+
+//! [12]
+
+void Window::openFileOfItem(int row, int /* column */)
+{
+    QTableWidgetItem *item = filesTable->item(row, 0);
+
+    QDesktopServices::openUrl(currentDir.absoluteFilePath(item->text()));
+}
+
+//! [12]
+