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https://github.com/d47081/qBittorrent.git
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1a913c502b
Explicit or implicit calls to begin() and end() cause a non-const
container to detach from shared data, ie. to perform a deep-copy to gain
a unique copy of the data.
That can be a expensive although unneeded operation.
In order to assist the developer a copyAsConst function is added.
copyAsConst returns a const copy of the object.
For lvalues just use qAsConst. It's only available on Qt 5.7.0. But we
added also for earlier versions. The developer can always use qAsConst.
Intended uses:
QString s = ...;
for (const auto &ch : qAsConst(s))
process(ch);
for (const auto &ch : copyAsConst(funcReturningQString()))
process(ch);
145 lines
3.9 KiB
C++
145 lines
3.9 KiB
C++
/*
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* Bittorrent Client using Qt and libtorrent.
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* Copyright (C) 2017 Vladimir Golovnev <glassez@yandex.ru>
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* Copyright (C) 2010 Christophe Dumez <chris@qbittorrent.org>
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* Copyright (C) 2010 Arnaud Demaiziere <arnaud@qbittorrent.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* In addition, as a special exception, the copyright holders give permission to
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* link this program with the OpenSSL project's "OpenSSL" library (or with
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* modified versions of it that use the same license as the "OpenSSL" library),
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* and distribute the linked executables. You must obey the GNU General Public
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* License in all respects for all of the code used other than "OpenSSL". If you
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* modify file(s), you may extend this exception to your version of the file(s),
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* but you are not obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*/
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#include "rss_folder.h"
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#include <QJsonObject>
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#include <QJsonValue>
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#include "base/global.h"
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#include "rss_article.h"
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using namespace RSS;
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Folder::Folder(const QString &path)
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: Item(path)
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{
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}
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Folder::~Folder()
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{
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emit aboutToBeDestroyed(this);
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foreach (auto item, items())
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delete item;
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}
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QList<Article *> Folder::articles() const
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{
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QList<Article *> news;
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foreach (Item *item, items()) {
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int n = news.size();
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news << item->articles();
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std::inplace_merge(news.begin(), news.begin() + n, news.end()
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, [](Article *a1, Article *a2)
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{
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return Article::articleDateRecentThan(a1, a2->date());
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});
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}
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return news;
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}
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int Folder::unreadCount() const
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{
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int count = 0;
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foreach (Item *item, items())
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count += item->unreadCount();
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return count;
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}
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void Folder::markAsRead()
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{
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foreach (Item *item, items())
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item->markAsRead();
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}
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void Folder::refresh()
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{
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foreach (Item *item, items())
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item->refresh();
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}
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QList<Item *> Folder::items() const
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{
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return m_items;
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}
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QJsonValue Folder::toJsonValue(bool withData) const
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{
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QJsonObject jsonObj;
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foreach (Item *item, items())
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jsonObj.insert(item->name(), item->toJsonValue(withData));
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return jsonObj;
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}
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void Folder::handleItemUnreadCountChanged()
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{
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emit unreadCountChanged(this);
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}
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void Folder::cleanup()
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{
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foreach (Item *item, items())
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item->cleanup();
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}
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void Folder::addItem(Item *item)
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{
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Q_ASSERT(item);
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Q_ASSERT(!m_items.contains(item));
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m_items.append(item);
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connect(item, &Item::newArticle, this, &Item::newArticle);
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connect(item, &Item::articleRead, this, &Item::articleRead);
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connect(item, &Item::articleAboutToBeRemoved, this, &Item::articleAboutToBeRemoved);
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connect(item, &Item::unreadCountChanged, this, &Folder::handleItemUnreadCountChanged);
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for (auto article: copyAsConst(item->articles()))
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emit newArticle(article);
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if (item->unreadCount() > 0)
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emit unreadCountChanged(this);
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}
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void Folder::removeItem(Item *item)
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{
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Q_ASSERT(m_items.contains(item));
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for (auto article: copyAsConst(item->articles()))
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emit articleAboutToBeRemoved(article);
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item->disconnect(this);
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m_items.removeOne(item);
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if (item->unreadCount() > 0)
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emit unreadCountChanged(this);
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}
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