/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
** All rights reserved. | |
** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the Qt Linguist of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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. | |
** | |
** 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. | |
** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
** | |
** | |
** | |
** | |
** | |
** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#include "recentfiles.h" | |
#include "globals.h" | |
#include <QtCore/QDebug> | |
#include <QtCore/QFileInfo> | |
#include <QtCore/QSettings> | |
#include <QtCore/QString> | |
#include <QtCore/QStringList> | |
QT_BEGIN_NAMESPACE | |
static QString configKey() | |
{ | |
return settingPath("RecentlyOpenedFiles"); | |
} | |
RecentFiles::RecentFiles(const int maxEntries) | |
: m_groupOpen(false), | |
m_clone1st(false), | |
m_maxEntries(maxEntries) | |
{ | |
m_timer.setSingleShot(true); | |
m_timer.setInterval(3 * 60 * 1000); | |
connect(&m_timer, SIGNAL(timeout()), SLOT(closeGroup())); | |
} | |
/* | |
* The logic is as follows: | |
* - The most recent (i.e., topmost) item can be open ("in flux") | |
* - The item is closed by either a timeout (3 min or so) or a | |
* "terminal action" (e.g., closing all files) | |
* - While the item is open, modifications to the set of open files | |
* will modify that item instead of creating new items | |
* - If the open item is modified to be equal to an existing item, | |
* the existing item is deleted, but will be re-created when the | |
* open item is modified even further | |
* Cases (actions in parentheses are no-ops): | |
* - identical to top item => (do nothing) | |
* - closed, new item => insert at top, (clear marker) | |
* - closed, existing item => move to top, mark for cloning | |
* - open, new item, not marked => replace top, (clear marker) | |
* - open, new item, marked => insert at top, clear marker | |
* - open, existing item, not marked => replace top, delete copy, mark for cloning | |
* - open, existing item, marked => insert at top, delete copy, (mark for cloning) | |
* - closing clears marker | |
*/ | |
void RecentFiles::addFiles(const QStringList &names) | |
{ | |
if (m_strLists.isEmpty() || names != m_strLists.first()) { | |
if (m_groupOpen && !m_clone1st) | |
// Group being open implies at least one item in the list | |
m_strLists.removeFirst(); | |
m_groupOpen = true; | |
// We do *not* sort the actual entries, as that would destroy the user's | |
// chosen arrangement. However, we do the searching on sorted lists, so | |
// we throw out (probably) obsolete arrangements. | |
QList<QStringList> sortedLists = m_strLists; | |
for (int i = 0; i < sortedLists.size(); ++i) | |
sortedLists[i].sort(); | |
QStringList sortedNames = names; | |
sortedNames.sort(); | |
int index = sortedLists.indexOf(sortedNames); | |
if (index >= 0) { | |
m_strLists.removeAt(index); | |
m_clone1st = true; | |
} else { | |
if (m_strLists.count() >= m_maxEntries) | |
m_strLists.removeLast(); | |
m_clone1st = false; | |
} | |
m_strLists.prepend(names); | |
} | |
m_timer.start(); | |
} | |
void RecentFiles::closeGroup() | |
{ | |
m_timer.stop(); | |
m_groupOpen = false; | |
} | |
void RecentFiles::readConfig() | |
{ | |
m_strLists.clear(); | |
QVariant val = QSettings().value(configKey()); | |
if (val.type() == QVariant::StringList) // Backwards compat to Qt < 4.5 | |
foreach (const QString &s, val.toStringList()) | |
m_strLists << QStringList(QFileInfo(s).canonicalFilePath()); | |
else | |
foreach (const QVariant &v, val.toList()) | |
m_strLists << v.toStringList(); | |
} | |
void RecentFiles::writeConfig() const | |
{ | |
QList<QVariant> vals; | |
foreach (const QStringList &sl, m_strLists) | |
vals << sl; | |
QSettings().setValue(configKey(), vals); | |
} | |
QT_END_NAMESPACE |