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Diffstat (limited to 'src/linguist/linguist/recentfiles.cpp')
| -rw-r--r-- | src/linguist/linguist/recentfiles.cpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/linguist/linguist/recentfiles.cpp b/src/linguist/linguist/recentfiles.cpp new file mode 100644 index 000000000..e1d79ce24 --- /dev/null +++ b/src/linguist/linguist/recentfiles.cpp @@ -0,0 +1,146 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 |