Chris@149: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@149: 
Chris@149: /*
Chris@149:     Sonic Visualiser
Chris@149:     An audio file viewer and annotation editor.
Chris@149:     Centre for Digital Music, Queen Mary, University of London.
Chris@149:     This file copyright 2006 Chris Cannam.
Chris@149:     
Chris@149:     This program is free software; you can redistribute it and/or
Chris@149:     modify it under the terms of the GNU General Public License as
Chris@149:     published by the Free Software Foundation; either version 2 of the
Chris@149:     License, or (at your option) any later version.  See the file
Chris@149:     COPYING included with this distribution for more information.
Chris@149: */
Chris@149: 
Chris@149: #include "RecentFiles.h"
Chris@149: 
Chris@150: #include "Preferences.h"
Chris@149: 
Chris@149: #include <QFileInfo>
Chris@156: #include <QSettings>
Chris@149: 
Chris@149: RecentFiles *
Chris@149: RecentFiles::m_instance = 0;
Chris@149: 
Chris@149: RecentFiles *
Chris@149: RecentFiles::getInstance(int maxFileCount)
Chris@149: {
Chris@149:     if (!m_instance) {
Chris@149:         m_instance = new RecentFiles(maxFileCount);
Chris@149:     }
Chris@149:     return m_instance;
Chris@149: }
Chris@149: 
Chris@149: RecentFiles::RecentFiles(int maxFileCount) :
Chris@149:     m_maxFileCount(maxFileCount)
Chris@149: {
Chris@149:     readFiles();
Chris@149: }
Chris@149: 
Chris@149: RecentFiles::~RecentFiles()
Chris@149: {
Chris@149:     // nothing
Chris@149: }
Chris@149: 
Chris@149: void
Chris@149: RecentFiles::readFiles()
Chris@149: {
Chris@149:     m_files.clear();
Chris@156:     QSettings settings;
Chris@156:     settings.beginGroup("RecentFiles");
Chris@156: 
Chris@149:     for (unsigned int i = 0; i < 100; ++i) {
Chris@149:         QString key = QString("recent-file-%1").arg(i);
Chris@156:         QString filename = settings.value(key, "").toString();
Chris@149:         if (filename == "") break;
Chris@149:         if (i < m_maxFileCount) m_files.push_back(filename);
Chris@156:         else settings.setValue(key, "");
Chris@149:     }
Chris@156: 
Chris@156:     settings.endGroup();
Chris@149: }
Chris@149: 
Chris@149: void
Chris@149: RecentFiles::writeFiles()
Chris@149: {
Chris@156:     QSettings settings;
Chris@156:     settings.beginGroup("RecentFiles");
Chris@156: 
Chris@149:     for (unsigned int i = 0; i < m_maxFileCount; ++i) {
Chris@149:         QString key = QString("recent-file-%1").arg(i);
Chris@149:         QString filename = "";
Chris@149:         if (i < m_files.size()) filename = m_files[i];
Chris@156:         settings.setValue(key, filename);
Chris@149:     }
Chris@156: 
Chris@156:     settings.endGroup();
Chris@149: }
Chris@149: 
Chris@149: void
Chris@149: RecentFiles::truncateAndWrite()
Chris@149: {
Chris@149:     while (m_files.size() > m_maxFileCount) {
Chris@149:         m_files.pop_back();
Chris@149:     }
Chris@149:     writeFiles();
Chris@149: }
Chris@149: 
Chris@149: std::vector<QString>
Chris@149: RecentFiles::getRecentFiles() const
Chris@149: {
Chris@149:     std::vector<QString> files;
Chris@149:     for (unsigned int i = 0; i < m_maxFileCount; ++i) {
Chris@149:         if (i < m_files.size()) {
Chris@149:             files.push_back(m_files[i]);
Chris@149:         }
Chris@149:     }
Chris@149:     return files;
Chris@149: }
Chris@149: 
Chris@149: void
Chris@149: RecentFiles::addFile(QString filename)
Chris@149: {
Chris@149:     filename = QFileInfo(filename).absoluteFilePath();
Chris@149: 
Chris@149:     bool have = false;
Chris@149:     for (unsigned int i = 0; i < m_files.size(); ++i) {
Chris@149:         if (m_files[i] == filename) {
Chris@149:             have = true;
Chris@149:             break;
Chris@149:         }
Chris@149:     }
Chris@149:     
Chris@149:     if (!have) {
Chris@149:         m_files.push_front(filename);
Chris@149:     } else {
Chris@149:         std::deque<QString> newfiles;
Chris@149:         newfiles.push_back(filename);
Chris@149:         for (unsigned int i = 0; i < m_files.size(); ++i) {
Chris@149:             if (m_files[i] == filename) continue;
Chris@149:             newfiles.push_back(m_files[i]);
Chris@149:         }
Chris@149:     }
Chris@149: 
Chris@149:     truncateAndWrite();
Chris@149:     emit recentFilesChanged();
Chris@149: }
Chris@149: 
Chris@149: