Long live Qt 4.5!

1 files changed, 221 insertions, 0 deletions

diff --git a/examples/assistant/simpletextviewer/findfiledialog.cpp b/examples/assistant/simpletextviewer/findfiledialog.cpp
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+++ b/examples/assistant/simpletextviewer/findfiledialog.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "findfiledialog.h"
+
+//! [0]
+FindFileDialog::FindFileDialog(QTextEdit *editor, QAssistantClient *assistant,
+                               QWidget *parent)
+    : QDialog(parent)
+{
+    currentAssistantClient = assistant;
+    currentEditor = editor;
+//! [0]
+
+    createButtons();
+    createComboBoxes();
+    createFilesTree();
+    createLabels();
+    createLayout();
+
+    directoryComboBox->addItem(QDir::toNativeSeparators(QDir::currentPath()));
+    fileNameComboBox->addItem("*");
+    findFiles();
+
+    setWindowTitle(tr("Find File"));
+//! [1]
+}
+//! [1]
+
+void FindFileDialog::browse()
+{
+    QString currentDirectory = directoryComboBox->currentText();
+    QString newDirectory = QFileDialog::getExistingDirectory(this,
+                               tr("Select Directory"), currentDirectory);
+    if (!newDirectory.isEmpty()) {
+        directoryComboBox->addItem(QDir::toNativeSeparators(newDirectory));
+        directoryComboBox->setCurrentIndex(directoryComboBox->count() - 1);
+        update();
+    }
+}
+
+//! [2]
+void FindFileDialog::help()
+{
+    currentAssistantClient->showPage(QLibraryInfo::location(QLibraryInfo::ExamplesPath) +
+            QDir::separator() +  "assistant/simpletextviewer/documentation/filedialog.html");
+}
+//! [2]
+
+void FindFileDialog::openFile(QTreeWidgetItem *item)
+{
+    if (!item) {
+        item = foundFilesTree->currentItem();
+        if (!item)
+            return;
+    }
+
+    QString fileName = item->text(0);
+    QString path = directoryComboBox->currentText() + QDir::separator();
+
+    QFile file(path + fileName);
+    if (file.open(QIODevice::ReadOnly)) {
+        QString data(file.readAll());
+
+        if (fileName.endsWith(".html"))
+            currentEditor->setHtml(data);
+        else
+            currentEditor->setPlainText(data);
+    }
+    close();
+}
+
+void FindFileDialog::update()
+{
+    findFiles();
+    buttonBox->button(QDialogButtonBox::Open)->setEnabled(
+            foundFilesTree->topLevelItemCount() > 0);
+}
+
+void FindFileDialog::findFiles()
+{
+    QRegExp filePattern(fileNameComboBox->currentText() + "*");
+    filePattern.setPatternSyntax(QRegExp::Wildcard);
+
+    QDir directory(directoryComboBox->currentText());
+
+    QStringList allFiles = directory.entryList(QDir::Files | QDir::NoSymLinks);
+    QStringList matchingFiles;
+
+    foreach (QString file, allFiles) {
+        if (filePattern.exactMatch(file))
+            matchingFiles << file;
+    }
+    showFiles(matchingFiles);
+}
+
+void FindFileDialog::showFiles(const QStringList &files)
+{
+    foundFilesTree->clear();
+
+    for (int i = 0; i < files.count(); ++i) {
+        QTreeWidgetItem *item = new QTreeWidgetItem(foundFilesTree);
+        item->setText(0, files[i]);
+    }
+
+    if (files.count() > 0)
+        foundFilesTree->setCurrentItem(foundFilesTree->topLevelItem(0));
+}
+
+void FindFileDialog::createButtons()
+{
+    browseButton = new QToolButton;
+    browseButton->setText(tr("..."));
+    connect(browseButton, SIGNAL(clicked()), this, SLOT(browse()));
+
+    buttonBox = new QDialogButtonBox(QDialogButtonBox::Open
+                                     | QDialogButtonBox::Cancel
+                                     | QDialogButtonBox::Help);
+    connect(buttonBox, SIGNAL(accepted()), this, SLOT(openFile()));
+    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
+    connect(buttonBox, SIGNAL(helpRequested()), this, SLOT(help()));
+}
+
+void FindFileDialog::createComboBoxes()
+{
+    directoryComboBox = new QComboBox;
+    fileNameComboBox = new QComboBox;
+
+    fileNameComboBox->setEditable(true);
+    fileNameComboBox->setSizePolicy(QSizePolicy::Expanding,
+                                    QSizePolicy::Preferred);
+
+    directoryComboBox->setMinimumContentsLength(30);
+    directoryComboBox->setSizeAdjustPolicy(
+            QComboBox::AdjustToMinimumContentsLength);
+    directoryComboBox->setSizePolicy(QSizePolicy::Expanding,
+                                     QSizePolicy::Preferred);
+
+    connect(fileNameComboBox, SIGNAL(editTextChanged(const QString &)),
+            this, SLOT(update()));
+    connect(directoryComboBox, SIGNAL(currentIndexChanged(const QString &)),
+            this, SLOT(update()));
+}
+
+void FindFileDialog::createFilesTree()
+{
+    foundFilesTree = new QTreeWidget;
+    foundFilesTree->setColumnCount(1);
+    foundFilesTree->setHeaderLabels(QStringList(tr("Matching Files")));
+    foundFilesTree->setRootIsDecorated(false);
+    foundFilesTree->setSelectionMode(QAbstractItemView::SingleSelection);
+
+    connect(foundFilesTree, SIGNAL(itemActivated(QTreeWidgetItem *, int)),
+            this, SLOT(openFile(QTreeWidgetItem *)));
+}
+
+void FindFileDialog::createLabels()
+{
+    directoryLabel = new QLabel(tr("Search in:"));
+    fileNameLabel = new QLabel(tr("File name (including wildcards):"));
+}
+
+void FindFileDialog::createLayout()
+{
+    QHBoxLayout *fileLayout = new QHBoxLayout;
+    fileLayout->addWidget(fileNameLabel);
+    fileLayout->addWidget(fileNameComboBox);
+
+    QHBoxLayout *directoryLayout = new QHBoxLayout;
+    directoryLayout->addWidget(directoryLabel);
+    directoryLayout->addWidget(directoryComboBox);
+    directoryLayout->addWidget(browseButton);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addLayout(fileLayout);
+    mainLayout->addLayout(directoryLayout);
+    mainLayout->addWidget(foundFilesTree);
+    mainLayout->addStretch();
+    mainLayout->addWidget(buttonBox);
+    setLayout(mainLayout);
+}