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Diffstat (limited to 'examples/gestures/browser/downloadmanager.cpp')
| -rw-r--r-- | examples/gestures/browser/downloadmanager.cpp | 579 |
1 files changed, 0 insertions, 579 deletions
diff --git a/examples/gestures/browser/downloadmanager.cpp b/examples/gestures/browser/downloadmanager.cpp deleted file mode 100644 index 8e23795..0000000 --- a/examples/gestures/browser/downloadmanager.cpp +++ /dev/null @@ -1,579 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** 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 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 http://www.qtsoftware.com/contact. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "downloadmanager.h" - -#include "autosaver.h" -#include "browserapplication.h" -#include "networkaccessmanager.h" - -#include <math.h> - -#include <QtCore/QMetaEnum> -#include <QtCore/QSettings> - -#include <QtGui/QDesktopServices> -#include <QtGui/QFileDialog> -#include <QtGui/QHeaderView> -#include <QtGui/QFileIconProvider> - -#include <QtCore/QDebug> - -#include <QtWebKit/QWebSettings> - -/*! - DownloadItem is a widget that is displayed in the download manager list. - It moves the data from the QNetworkReply into the QFile as well - as update the information/progressbar and report errors. - */ -DownloadItem::DownloadItem(QNetworkReply *reply, bool requestFileName, QWidget *parent) - : QWidget(parent) - , m_reply(reply) - , m_requestFileName(requestFileName) - , m_bytesReceived(0) -{ - setupUi(this); - QPalette p = downloadInfoLabel->palette(); - p.setColor(QPalette::Text, Qt::darkGray); - downloadInfoLabel->setPalette(p); - progressBar->setMaximum(0); - tryAgainButton->hide(); - connect(stopButton, SIGNAL(clicked()), this, SLOT(stop())); - connect(openButton, SIGNAL(clicked()), this, SLOT(open())); - connect(tryAgainButton, SIGNAL(clicked()), this, SLOT(tryAgain())); - - init(); -} - -void DownloadItem::init() -{ - if (!m_reply) - return; - - // attach to the m_reply - m_url = m_reply->url(); - m_reply->setParent(this); - connect(m_reply, SIGNAL(readyRead()), this, SLOT(downloadReadyRead())); - connect(m_reply, SIGNAL(error(QNetworkReply::NetworkError)), - this, SLOT(error(QNetworkReply::NetworkError))); - connect(m_reply, SIGNAL(downloadProgress(qint64, qint64)), - this, SLOT(downloadProgress(qint64, qint64))); - connect(m_reply, SIGNAL(metaDataChanged()), - this, SLOT(metaDataChanged())); - connect(m_reply, SIGNAL(finished()), - this, SLOT(finished())); - - // reset info - downloadInfoLabel->clear(); - progressBar->setValue(0); - getFileName(); - - // start timer for the download estimation - m_downloadTime.start(); - - if (m_reply->error() != QNetworkReply::NoError) { - error(m_reply->error()); - finished(); - } -} - -void DownloadItem::getFileName() -{ - QSettings settings; - settings.beginGroup(QLatin1String("downloadmanager")); - QString defaultLocation = QDesktopServices::storageLocation(QDesktopServices::DesktopLocation); - QString downloadDirectory = settings.value(QLatin1String("downloadDirectory"), defaultLocation).toString(); - if (!downloadDirectory.isEmpty()) - downloadDirectory += QLatin1Char('/'); - - QString defaultFileName = saveFileName(downloadDirectory); - QString fileName = defaultFileName; - if (m_requestFileName) { - fileName = QFileDialog::getSaveFileName(this, tr("Save File"), defaultFileName); - if (fileName.isEmpty()) { - m_reply->close(); - fileNameLabel->setText(tr("Download canceled: %1").arg(QFileInfo(defaultFileName).fileName())); - return; - } - } - m_output.setFileName(fileName); - fileNameLabel->setText(QFileInfo(m_output.fileName()).fileName()); - if (m_requestFileName) - downloadReadyRead(); -} - -QString DownloadItem::saveFileName(const QString &directory) const -{ - // Move this function into QNetworkReply to also get file name sent from the server - QString path = m_url.path(); - QFileInfo info(path); - QString baseName = info.completeBaseName(); - QString endName = info.suffix(); - - if (baseName.isEmpty()) { - baseName = QLatin1String("unnamed_download"); - qDebug() << "DownloadManager:: downloading unknown file:" << m_url; - } - QString name = directory + baseName + QLatin1Char('.') + endName; - if (QFile::exists(name)) { - // already exists, don't overwrite - int i = 1; - do { - name = directory + baseName + QLatin1Char('-') + QString::number(i++) + QLatin1Char('.') + endName; - } while (QFile::exists(name)); - } - return name; -} - - -void DownloadItem::stop() -{ - setUpdatesEnabled(false); - stopButton->setEnabled(false); - stopButton->hide(); - tryAgainButton->setEnabled(true); - tryAgainButton->show(); - setUpdatesEnabled(true); - m_reply->abort(); -} - -void DownloadItem::open() -{ - QFileInfo info(m_output); - QUrl url = QUrl::fromLocalFile(info.absolutePath()); - QDesktopServices::openUrl(url); -} - -void DownloadItem::tryAgain() -{ - if (!tryAgainButton->isEnabled()) - return; - - tryAgainButton->setEnabled(false); - tryAgainButton->setVisible(false); - stopButton->setEnabled(true); - stopButton->setVisible(true); - progressBar->setVisible(true); - - QNetworkReply *r = BrowserApplication::networkAccessManager()->get(QNetworkRequest(m_url)); - if (m_reply) - m_reply->deleteLater(); - if (m_output.exists()) - m_output.remove(); - m_reply = r; - init(); - emit statusChanged(); -} - -void DownloadItem::downloadReadyRead() -{ - if (m_requestFileName && m_output.fileName().isEmpty()) - return; - if (!m_output.isOpen()) { - // in case someone else has already put a file there - if (!m_requestFileName) - getFileName(); - if (!m_output.open(QIODevice::WriteOnly)) { - downloadInfoLabel->setText(tr("Error opening save file: %1") - .arg(m_output.errorString())); - stopButton->click(); - emit statusChanged(); - return; - } - emit statusChanged(); - } - if (-1 == m_output.write(m_reply->readAll())) { - downloadInfoLabel->setText(tr("Error saving: %1") - .arg(m_output.errorString())); - stopButton->click(); - } -} - -void DownloadItem::error(QNetworkReply::NetworkError) -{ - qDebug() << "DownloadItem::error" << m_reply->errorString() << m_url; - downloadInfoLabel->setText(tr("Network Error: %1").arg(m_reply->errorString())); - tryAgainButton->setEnabled(true); - tryAgainButton->setVisible(true); -} - -void DownloadItem::metaDataChanged() -{ - qDebug() << "DownloadItem::metaDataChanged: not handled."; -} - -void DownloadItem::downloadProgress(qint64 bytesReceived, qint64 bytesTotal) -{ - m_bytesReceived = bytesReceived; - if (bytesTotal == -1) { - progressBar->setValue(0); - progressBar->setMaximum(0); - } else { - progressBar->setValue(bytesReceived); - progressBar->setMaximum(bytesTotal); - } - updateInfoLabel(); -} - -void DownloadItem::updateInfoLabel() -{ - if (m_reply->error() == QNetworkReply::NoError) - return; - - qint64 bytesTotal = progressBar->maximum(); - bool running = !downloadedSuccessfully(); - - // update info label - double speed = m_bytesReceived * 1000.0 / m_downloadTime.elapsed(); - double timeRemaining = ((double)(bytesTotal - m_bytesReceived)) / speed; - QString timeRemainingString = tr("seconds"); - if (timeRemaining > 60) { - timeRemaining = timeRemaining / 60; - timeRemainingString = tr("minutes"); - } - timeRemaining = floor(timeRemaining); - - // When downloading the eta should never be 0 - if (timeRemaining == 0) - timeRemaining = 1; - - QString info; - if (running) { - QString remaining; - if (bytesTotal != 0) - remaining = tr("- %4 %5 remaining") - .arg(timeRemaining) - .arg(timeRemainingString); - info = QString(tr("%1 of %2 (%3/sec) %4")) - .arg(dataString(m_bytesReceived)) - .arg(bytesTotal == 0 ? tr("?") : dataString(bytesTotal)) - .arg(dataString((int)speed)) - .arg(remaining); - } else { - if (m_bytesReceived == bytesTotal) - info = dataString(m_output.size()); - else - info = tr("%1 of %2 - Stopped") - .arg(dataString(m_bytesReceived)) - .arg(dataString(bytesTotal)); - } - downloadInfoLabel->setText(info); -} - -QString DownloadItem::dataString(int size) const -{ - QString unit; - if (size < 1024) { - unit = tr("bytes"); - } else if (size < 1024*1024) { - size /= 1024; - unit = tr("kB"); - } else { - size /= 1024*1024; - unit = tr("MB"); - } - return QString(QLatin1String("%1 %2")).arg(size).arg(unit); -} - -bool DownloadItem::downloading() const -{ - return (progressBar->isVisible()); -} - -bool DownloadItem::downloadedSuccessfully() const -{ - return (stopButton->isHidden() && tryAgainButton->isHidden()); -} - -void DownloadItem::finished() -{ - progressBar->hide(); - stopButton->setEnabled(false); - stopButton->hide(); - m_output.close(); - updateInfoLabel(); - emit statusChanged(); -} - -/*! - DownloadManager is a Dialog that contains a list of DownloadItems - - It is a basic download manager. It only downloads the file, doesn't do BitTorrent, - extract zipped files or anything fancy. - */ -DownloadManager::DownloadManager(QWidget *parent) - : QDialog(parent) - , m_autoSaver(new AutoSaver(this)) - , m_manager(BrowserApplication::networkAccessManager()) - , m_iconProvider(0) - , m_removePolicy(Never) -{ - setupUi(this); - downloadsView->setShowGrid(false); - downloadsView->verticalHeader()->hide(); - downloadsView->horizontalHeader()->hide(); - downloadsView->setAlternatingRowColors(true); - downloadsView->horizontalHeader()->setStretchLastSection(true); - m_model = new DownloadModel(this); - downloadsView->setModel(m_model); - connect(cleanupButton, SIGNAL(clicked()), this, SLOT(cleanup())); - load(); -} - -DownloadManager::~DownloadManager() -{ - m_autoSaver->changeOccurred(); - m_autoSaver->saveIfNeccessary(); - if (m_iconProvider) - delete m_iconProvider; -} - -int DownloadManager::activeDownloads() const -{ - int count = 0; - for (int i = 0; i < m_downloads.count(); ++i) { - if (m_downloads.at(i)->stopButton->isEnabled()) - ++count; - } - return count; -} - -void DownloadManager::download(const QNetworkRequest &request, bool requestFileName) -{ - if (request.url().isEmpty()) - return; - handleUnsupportedContent(m_manager->get(request), requestFileName); -} - -void DownloadManager::handleUnsupportedContent(QNetworkReply *reply, bool requestFileName) -{ - if (!reply || reply->url().isEmpty()) - return; - QVariant header = reply->header(QNetworkRequest::ContentLengthHeader); - bool ok; - int size = header.toInt(&ok); - if (ok && size == 0) - return; - - qDebug() << "DownloadManager::handleUnsupportedContent" << reply->url() << "requestFileName" << requestFileName; - DownloadItem *item = new DownloadItem(reply, requestFileName, this); - addItem(item); -} - -void DownloadManager::addItem(DownloadItem *item) -{ - connect(item, SIGNAL(statusChanged()), this, SLOT(updateRow())); - int row = m_downloads.count(); - m_model->beginInsertRows(QModelIndex(), row, row); - m_downloads.append(item); - m_model->endInsertRows(); - updateItemCount(); - if (row == 0) - show(); - downloadsView->setIndexWidget(m_model->index(row, 0), item); - QIcon icon = style()->standardIcon(QStyle::SP_FileIcon); - item->fileIcon->setPixmap(icon.pixmap(48, 48)); - downloadsView->setRowHeight(row, item->sizeHint().height()); -} - -void DownloadManager::updateRow() -{ - DownloadItem *item = qobject_cast<DownloadItem*>(sender()); - int row = m_downloads.indexOf(item); - if (-1 == row) - return; - if (!m_iconProvider) - m_iconProvider = new QFileIconProvider(); - QIcon icon = m_iconProvider->icon(item->m_output.fileName()); - if (icon.isNull()) - icon = style()->standardIcon(QStyle::SP_FileIcon); - item->fileIcon->setPixmap(icon.pixmap(48, 48)); - downloadsView->setRowHeight(row, item->minimumSizeHint().height()); - - bool remove = false; - QWebSettings *globalSettings = QWebSettings::globalSettings(); - if (!item->downloading() - && globalSettings->testAttribute(QWebSettings::PrivateBrowsingEnabled)) - remove = true; - - if (item->downloadedSuccessfully() - && removePolicy() == DownloadManager::SuccessFullDownload) { - remove = true; - } - if (remove) - m_model->removeRow(row); - - cleanupButton->setEnabled(m_downloads.count() - activeDownloads() > 0); -} - -DownloadManager::RemovePolicy DownloadManager::removePolicy() const -{ - return m_removePolicy; -} - -void DownloadManager::setRemovePolicy(RemovePolicy policy) -{ - if (policy == m_removePolicy) - return; - m_removePolicy = policy; - m_autoSaver->changeOccurred(); -} - -void DownloadManager::save() const -{ - QSettings settings; - settings.beginGroup(QLatin1String("downloadmanager")); - QMetaEnum removePolicyEnum = staticMetaObject.enumerator(staticMetaObject.indexOfEnumerator("RemovePolicy")); - settings.setValue(QLatin1String("removeDownloadsPolicy"), QLatin1String(removePolicyEnum.valueToKey(m_removePolicy))); - settings.setValue(QLatin1String("size"), size()); - if (m_removePolicy == Exit) - return; - - for (int i = 0; i < m_downloads.count(); ++i) { - QString key = QString(QLatin1String("download_%1_")).arg(i); - settings.setValue(key + QLatin1String("url"), m_downloads[i]->m_url); - settings.setValue(key + QLatin1String("location"), QFileInfo(m_downloads[i]->m_output).filePath()); - settings.setValue(key + QLatin1String("done"), m_downloads[i]->downloadedSuccessfully()); - } - int i = m_downloads.count(); - QString key = QString(QLatin1String("download_%1_")).arg(i); - while (settings.contains(key + QLatin1String("url"))) { - settings.remove(key + QLatin1String("url")); - settings.remove(key + QLatin1String("location")); - settings.remove(key + QLatin1String("done")); - key = QString(QLatin1String("download_%1_")).arg(++i); - } -} - -void DownloadManager::load() -{ - QSettings settings; - settings.beginGroup(QLatin1String("downloadmanager")); - QSize size = settings.value(QLatin1String("size")).toSize(); - if (size.isValid()) - resize(size); - QByteArray value = settings.value(QLatin1String("removeDownloadsPolicy"), QLatin1String("Never")).toByteArray(); - QMetaEnum removePolicyEnum = staticMetaObject.enumerator(staticMetaObject.indexOfEnumerator("RemovePolicy")); - m_removePolicy = removePolicyEnum.keyToValue(value) == -1 ? - Never : - static_cast<RemovePolicy>(removePolicyEnum.keyToValue(value)); - - int i = 0; - QString key = QString(QLatin1String("download_%1_")).arg(i); - while (settings.contains(key + QLatin1String("url"))) { - QUrl url = settings.value(key + QLatin1String("url")).toUrl(); - QString fileName = settings.value(key + QLatin1String("location")).toString(); - bool done = settings.value(key + QLatin1String("done"), true).toBool(); - if (!url.isEmpty() && !fileName.isEmpty()) { - DownloadItem *item = new DownloadItem(0, this); - item->m_output.setFileName(fileName); - item->fileNameLabel->setText(QFileInfo(item->m_output.fileName()).fileName()); - item->m_url = url; - item->stopButton->setVisible(false); - item->stopButton->setEnabled(false); - item->tryAgainButton->setVisible(!done); - item->tryAgainButton->setEnabled(!done); - item->progressBar->setVisible(!done); - addItem(item); - } - key = QString(QLatin1String("download_%1_")).arg(++i); - } - cleanupButton->setEnabled(m_downloads.count() - activeDownloads() > 0); -} - -void DownloadManager::cleanup() -{ - if (m_downloads.isEmpty()) - return; - m_model->removeRows(0, m_downloads.count()); - updateItemCount(); - if (m_downloads.isEmpty() && m_iconProvider) { - delete m_iconProvider; - m_iconProvider = 0; - } - m_autoSaver->changeOccurred(); -} - -void DownloadManager::updateItemCount() -{ - int count = m_downloads.count(); - itemCount->setText(count == 1 ? tr("1 Download") : tr("%1 Downloads").arg(count)); -} - -DownloadModel::DownloadModel(DownloadManager *downloadManager, QObject *parent) - : QAbstractListModel(parent) - , m_downloadManager(downloadManager) -{ -} - -QVariant DownloadModel::data(const QModelIndex &index, int role) const -{ - if (index.row() < 0 || index.row() >= rowCount(index.parent())) - return QVariant(); - if (role == Qt::ToolTipRole) - if (!m_downloadManager->m_downloads.at(index.row())->downloadedSuccessfully()) - return m_downloadManager->m_downloads.at(index.row())->downloadInfoLabel->text(); - return QVariant(); -} - -int DownloadModel::rowCount(const QModelIndex &parent) const -{ - return (parent.isValid()) ? 0 : m_downloadManager->m_downloads.count(); -} - -bool DownloadModel::removeRows(int row, int count, const QModelIndex &parent) -{ - if (parent.isValid()) - return false; - - int lastRow = row + count - 1; - for (int i = lastRow; i >= row; --i) { - if (m_downloadManager->m_downloads.at(i)->downloadedSuccessfully() - || m_downloadManager->m_downloads.at(i)->tryAgainButton->isEnabled()) { - beginRemoveRows(parent, i, i); - m_downloadManager->m_downloads.takeAt(i)->deleteLater(); - endRemoveRows(); - } - } - m_downloadManager->m_autoSaver->changeOccurred(); - return true; -} - |