src/GUI/filebrowser.cpp

   1 #include <QFileSystemWatcher>
   2 #include <QDir>
   3 #include "filebrowser.h"
   4
   5
   6 FileBrowser::FileBrowser(QObject *parent) : QObject(parent)
   7 {
   8 #ifndef Q_OS_ANDROID
   9         _watcher = new QFileSystemWatcher(this);
  10         connect(_watcher, &QFileSystemWatcher::directoryChanged, this,
  11           &FileBrowser::reloadDirectory);
  12 #endif // Q_OS_ANDROID
  13
  14         _index = -1;
  15 }
  16
  17 #ifdef Q_OS_ANDROID
  18 void FileBrowser::setCurrentDir(const QString &path)
  19 {
  20         QDir dir(path);
  21         _files = dir.entryInfoList(_filter, QDir::Files);
  22         _index = _files.empty() ? -1 : 0;
  23
  24         emit listChanged();
  25 }
  26 #else // Q_OS_ANDROID
  27 void FileBrowser::setCurrent(const QString &path)
  28 {
  29         QFileInfo file(path);
  30         QDir dir = file.absoluteDir();
  31
  32         if (_files.isEmpty() || _files.last().canonicalPath()
  33           != dir.canonicalPath()) {
  34                 if (!_watcher->directories().isEmpty())
  35                         _watcher->removePaths(_watcher->directories());
  36                 _watcher->addPath(dir.canonicalPath());
  37                 _files = dir.entryInfoList(_filter, QDir::Files);
  38         }
  39
  40         _index = _files.empty() ? -1 : _files.indexOf(file);
  41 }
  42 #endif // Q_OS_ANDROID
  43
  44 void FileBrowser::setFilter(const QStringList &filter)
  45 {
  46         _filter = filter;
  47         if (!_files.isEmpty())
  48                 reloadDirectory(_files.last().canonicalPath());
  49 }
  50
  51 bool FileBrowser::isLast() const
  52 {
  53         return (_files.size() > 0 && _index == _files.size() - 1);
  54 }
  55
  56 bool FileBrowser::isFirst() const
  57 {
  58         return (_files.size() > 0 && _index == 0);
  59 }
  60
  61 QString FileBrowser::current()
  62 {
  63         return (_index >= 0) ? _files.at(_index).absoluteFilePath() : QString();
  64 }
  65
  66 QString FileBrowser::next()
  67 {
  68         if (_index < 0 || _index == _files.size() - 1)
  69                 return QString();
  70
  71         return _files.at(++_index).absoluteFilePath();
  72 }
  73
  74 QString FileBrowser::prev()
  75 {
  76         if (_index <= 0)
  77                 return QString();
  78
  79         return _files.at(--_index).absoluteFilePath();
  80 }
  81
  82 QString FileBrowser::last()
  83 {
  84         if (_files.empty())
  85                 return QString();
  86
  87         _index = _files.size() - 1;
  88         return _files.last().absoluteFilePath();
  89 }
  90
  91 QString FileBrowser::first()
  92 {
  93         if (_files.empty())
  94                 return QString();
  95
  96         _index = 0;
  97         return _files.first().absoluteFilePath();
  98 }
  99
 100 void FileBrowser::reloadDirectory(const QString &path)
 101 {
 102         QDir dir(path);
 103         QFileInfo current = (_index >= 0) ? _files.at(_index) : QFileInfo();
 104
 105         _files = dir.entryInfoList(_filter, QDir::Files);
 106         _index = _files.empty() ? -1 : _files.indexOf(current);
 107
 108         emit listChanged();
 109 }