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 /**
  * \file recentfilesmenu.cpp
  * Menu to open recent files.
  *
  * \b Project: Kid3
  * \author Urs Fleisch
  * \date 15 Aug 2010
  *
  * Copyright (C) 2010-2024  Urs Fleisch
  *
  * This file is part of Kid3.
  *
  * Kid3 is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * Kid3 is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "recentfilesmenu.h"
 #include <QAction>
 #include <QDir>
 #include "isettings.h"
 
 namespace {
 
 constexpr int MAX_RECENT_FILES = 10;
 
 }
 
 /**
  * Constructor.
  *
  * @param parent parent widget
  */
 RecentFilesMenu::RecentFilesMenu(QWidget* parent) : QMenu(parent)
 {
   setObjectName(QLatin1String("RecentFilesMenu"));
 }
 
 /**
  * Add directory to list of recent files.
  *
  * @param dir path to directory
  */
 void RecentFilesMenu::addDirectory(const QString& dir)
 {
   QString path = QDir(dir).canonicalPath();
   if (path.isNull())
     return;
 
   // first remove the path if it already exists
   if (int pathIdx = m_files.indexOf(path); pathIdx != -1) {
     m_files.removeAt(pathIdx);
   }
 
   m_files.prepend(path);
   if (m_files.size() > MAX_RECENT_FILES) {
     m_files.removeLast();
   }
 
   updateRecentFileActions();
 }
 
 /**
  * Saves the current recent files entries to a given configuration.
  *
  * @param config configuration settings
  */
 void RecentFilesMenu::saveEntries(ISettings* config)
 {
   config->beginGroup(QLatin1String("RecentFiles"), true);
   config->setValue(QLatin1String("Files"), QVariant(m_files));
   config->endGroup();
 }
 
 /**
  * Loads the recent files entries from a given configuration.
  *
  * @param config configuration settings
  */
 void RecentFilesMenu::loadEntries(ISettings* config)
 {
   config->beginGroup(QLatin1String("RecentFiles"), true);
   m_files = config->value(QLatin1String("Files"), m_files).toStringList();
   config->endGroup();
 
   while (m_files.size() > MAX_RECENT_FILES) {
     m_files.removeLast();
   }
 
   updateRecentFileActions();
 }
 
 /**
  * Update the recent file actions.
  */
 void RecentFilesMenu::updateRecentFileActions()
 {
   int i = 0;
   clear();
   for (auto it = m_files.constBegin(); it != m_files.constEnd(); ++it) {
     auto act = new QAction(this);
     act->setText(QString(QLatin1String("&%1 %2")).arg(++i).arg(*it));
     act->setData(*it);
     connect(act, &QAction::triggered, this, &RecentFilesMenu::openRecentFile);
     this->addAction(act);
   }
   if (i > 0) {
     addSeparator();
     auto clearListAction = new QAction(this);
     clearListAction->setText(tr("&Clear List"));
     connect(clearListAction, &QAction::triggered, this, &RecentFilesMenu::clearList);
     this->addAction(clearListAction);
     setEnabled(true);
   } else {
     setEnabled(false);
   }
 }
 
 /**
  * Emit a load file signal when a recent file has to be loaded.
  */
 void RecentFilesMenu::openRecentFile()
 {
   auto action = qobject_cast<QAction*>(sender());
   if (action) {
     emit loadFile(action->data().toString());
   }
 }
 
 /**
  * Clear the list of recent files.
  */
 void RecentFilesMenu::clearList()
 {
   m_files.clear();
   updateRecentFileActions();
 }