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Diffstat (limited to 'examples/webenginewidgets/demobrowser/downloadmanager.cpp')
| -rw-r--r-- | examples/webenginewidgets/demobrowser/downloadmanager.cpp | 505 |
1 files changed, 0 insertions, 505 deletions
diff --git a/examples/webenginewidgets/demobrowser/downloadmanager.cpp b/examples/webenginewidgets/demobrowser/downloadmanager.cpp deleted file mode 100644 index 012d0620e..000000000 --- a/examples/webenginewidgets/demobrowser/downloadmanager.cpp +++ /dev/null @@ -1,505 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the demonstration applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "downloadmanager.h" - -#include "autosaver.h" -#include "browserapplication.h" - -#include <math.h> - -#include <QtCore/QMetaEnum> -#include <QtCore/QSettings> - -#include <QtGui/QDesktopServices> -#include <QtWidgets/QFileDialog> -#include <QtWidgets/QHeaderView> -#include <QtWidgets/QFileIconProvider> - -#include <QtCore/QDebug> - -#include <QWebEngineSettings> -#include <QWebEngineDownloadItem> - -/*! - DownloadWidget is a widget that is displayed in the download manager list. - It moves the data from the QWebEngineDownloadItem into the QFile as well - as update the information/progressbar and report errors. - */ - -DownloadWidget::DownloadWidget(QWebEngineDownloadItem *download, QWidget *parent) - : QWidget(parent) - , m_bytesReceived(0) - , m_download(download) -{ - setupUi(this); - QPalette p = downloadInfoLabel->palette(); - p.setColor(QPalette::Text, Qt::darkGray); - downloadInfoLabel->setPalette(p); - progressBar->setMaximum(0); - connect(stopButton, SIGNAL(clicked()), this, SLOT(stop())); - connect(openButton, SIGNAL(clicked()), this, SLOT(open())); - - if (download) { - m_file.setFile(download->path()); - m_url = download->url(); - } - - init(); -} - -void DownloadWidget::init() -{ - if (m_download) { - connect(m_download.data(), SIGNAL(downloadProgress(qint64,qint64)), - this, SLOT(downloadProgress(qint64,qint64))); - connect(m_download.data(), SIGNAL(finished()), - this, SLOT(finished())); - } - - // reset info - downloadInfoLabel->clear(); - progressBar->setValue(0); - getFileName(); - - // start timer for the download estimation - m_downloadTime.start(); -} - -bool DownloadWidget::getFileName(bool promptForFileName) -{ - QSettings settings; - settings.beginGroup(QLatin1String("downloadmanager")); - QString defaultLocation = QStandardPaths::writableLocation(QStandardPaths::DesktopLocation); - if (m_file.absoluteDir().exists()) - defaultLocation = m_file.absolutePath(); - QString downloadDirectory = settings.value(QLatin1String("downloadDirectory"), defaultLocation).toString(); - if (!downloadDirectory.isEmpty()) - downloadDirectory += QLatin1Char('/'); - - QString defaultFileName = QFileInfo(downloadDirectory, m_file.fileName()).absoluteFilePath(); - QString fileName = defaultFileName; - if (promptForFileName) { - fileName = QFileDialog::getSaveFileName(this, tr("Save File"), defaultFileName); - if (fileName.isEmpty()) { - if (m_download) - m_download->cancel(); - fileNameLabel->setText(tr("Download canceled: %1").arg(QFileInfo(defaultFileName).fileName())); - return false; - } - } - m_file.setFile(fileName); - - if (m_download && m_download->state() == QWebEngineDownloadItem::DownloadRequested) - m_download->setPath(m_file.absoluteFilePath()); - - fileNameLabel->setText(m_file.fileName()); - return true; -} - -void DownloadWidget::stop() -{ - setUpdatesEnabled(false); - stopButton->setEnabled(false); - stopButton->hide(); - setUpdatesEnabled(true); - if (m_download) - m_download->cancel(); - - emit statusChanged(); -} - -void DownloadWidget::open() -{ - QUrl url = QUrl::fromLocalFile(m_file.absoluteFilePath()); - QDesktopServices::openUrl(url); -} - -void DownloadWidget::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 DownloadWidget::updateInfoLabel() -{ - qint64 bytesTotal = progressBar->maximum(); - - // 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 (!downloadedSuccessfully()) { - QString remaining; - if (bytesTotal != 0) - remaining = tr("- %4 %5 remaining") - .arg(timeRemaining) - .arg(timeRemainingString); - info = 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 = tr("%1 of %2 - Stopped") - .arg(dataString(m_bytesReceived)) - .arg(dataString(bytesTotal)); - } else - info = dataString(m_bytesReceived); - } - downloadInfoLabel->setText(info); -} - -QString DownloadWidget::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 DownloadWidget::downloading() const -{ - return (progressBar->isVisible()); -} - -bool DownloadWidget::downloadedSuccessfully() const -{ - bool completed = m_download - && m_download->isFinished() - && m_download->state() == QWebEngineDownloadItem::DownloadCompleted; - return completed || !stopButton->isVisible(); -} - -void DownloadWidget::finished() -{ - if (m_download) { - QWebEngineDownloadItem::DownloadState state = m_download->state(); - QString message; - bool interrupted = false; - - switch (state) { - case QWebEngineDownloadItem::DownloadRequested: // Fall-through. - case QWebEngineDownloadItem::DownloadInProgress: - Q_UNREACHABLE(); - break; - case QWebEngineDownloadItem::DownloadCompleted: - break; - case QWebEngineDownloadItem::DownloadCancelled: - message = QStringLiteral("Download cancelled"); - interrupted = true; - break; - case QWebEngineDownloadItem::DownloadInterrupted: - message = QStringLiteral("Download interrupted: %1").arg(m_download->interruptReasonString()); - interrupted = true; - break; - } - - if (interrupted) { - downloadInfoLabel->setText(message); - return; - } - } - - progressBar->hide(); - stopButton->setEnabled(false); - stopButton->hide(); - updateInfoLabel(); - emit statusChanged(); -} - -/*! - DownloadManager is a Dialog that contains a list of DownloadWidgets - - 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_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(QWebEngineDownloadItem *download) -{ - DownloadWidget *widget = new DownloadWidget(download, this); - addItem(widget); -} - -void DownloadManager::addItem(DownloadWidget *widget) -{ - connect(widget, SIGNAL(statusChanged()), this, SLOT(updateRow())); - int row = m_downloads.count(); - m_model->beginInsertRows(QModelIndex(), row, row); - m_downloads.append(widget); - m_model->endInsertRows(); - updateItemCount(); - if (row == 0) - show(); - downloadsView->setIndexWidget(m_model->index(row, 0), widget); - QIcon icon = style()->standardIcon(QStyle::SP_FileIcon); - widget->fileIcon->setPixmap(icon.pixmap(48, 48)); - downloadsView->setRowHeight(row, widget->sizeHint().height()); -} - -void DownloadManager::updateRow() -{ - DownloadWidget *widget = qobject_cast<DownloadWidget*>(sender()); - int row = m_downloads.indexOf(widget); - if (-1 == row) - return; - if (!m_iconProvider) - m_iconProvider = new QFileIconProvider(); - QIcon icon = m_iconProvider->icon(widget->m_file); - if (icon.isNull()) - icon = style()->standardIcon(QStyle::SP_FileIcon); - widget->fileIcon->setPixmap(icon.pixmap(48, 48)); - downloadsView->setRowHeight(row, widget->minimumSizeHint().height()); - - bool remove = false; - if (!widget->downloading() - && BrowserApplication::instance()->privateBrowsing()) - remove = true; - - if (widget->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"), m_downloads[i]->m_file.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 (done && !url.isEmpty() && !fileName.isEmpty()) { - DownloadWidget *widget = new DownloadWidget(0, this); - widget->m_file.setFile(fileName); - widget->fileNameLabel->setText(widget->m_file.fileName()); - widget->m_url = url; - widget->stopButton->setVisible(false); - widget->stopButton->setEnabled(false); - widget->progressBar->hide(); - addItem(widget); - } - 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()) { - beginRemoveRows(parent, i, i); - m_downloadManager->m_downloads.takeAt(i)->deleteLater(); - endRemoveRows(); - } - } - m_downloadManager->m_autoSaver->changeOccurred(); - return true; -} |