src/Model_FileSystem.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2013 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this program; if not, write to the Free Software Foundation, Inc.,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 // http://www.gnu.org/licenses/gpl-2.0.txt
  20 ///////////////////////////////////////////////////////////////////////////////
  21
  22 #pragma once
  23
  24 #include <QFileSystemModel>
  25 #include <QMutex>
  26
  27 class QFileIconProviderEx;
  28
  29 class QFileSystemModelEx : public QFileSystemModel
  30 {
  31 public:
  32         QFileSystemModelEx();
  33         ~QFileSystemModelEx();
  34
  35         virtual bool hasChildren(const QModelIndex &parent = QModelIndex()) const;
  36         virtual void fetchMore(const QModelIndex &parent);
  37         virtual QModelIndex index(const QString &path, int column = 0) const;
  38         virtual void flushCache(void);
  39
  40 private:
  41         QFileIconProviderEx *m_myIconProvider;
  42
  43         static QHash<const QString, bool> s_hasSubfolderCache;
  44         static QMutex s_hasSubfolderMutex;
  45         static int s_findFirstFileExInfoLevel;
  46
  47         static bool hasSubfolders(const QString &path);
  48         static bool hasSubfoldersCached(const QString &path);
  49         static void removeFromCache(const QString &path);
  50         static void removeAllFromCache(void);
  51 };