src/gui/filelistmodel.cpp

   1 //
   2 // filelistmodel.cpp - A ROM chooser
   3 //
   4 // by James Hammons
   5 // (C) 2010 Underground Software
   6 //
   7 // JLH = James Hammons <jlhamm@acm.org>
   8 //
   9 // Who  When        What
  10 // ---  ----------  -------------------------------------------------------------
  11 // JLH  02/01/2010  Created this file
  12 // JLH  07/05/2011  Fixed model to not reset itself with each new row insertion
  13 // JLH  07/07/2011  Added code to help the built-in keyboard based auto-search
  14 //                  of the QListView class
  15 //
  16
  17 // Note that we have to put in convenience functions to the model for adding data
  18 // and calling reset() to tell the view(s) that the model has changed. So that much
  19 // should be simple. According to the docs, we have to reimplement flags() in the
  20 // QAbstractListModel subclass, but in the example given below they don't. Not sure
  21 // if it's necessary or not.
  22
  23 #include "filelistmodel.h"
  24
  25 #include "filedb.h"
  26
  27
  28 FileListModel::FileListModel(QObject * parent/*= 0*/): QAbstractListModel(parent)
  29 {
  30 }
  31
  32 int FileListModel::rowCount(const QModelIndex & /*parent = QModelIndex()*/) const
  33 {
  34         return list.size();
  35 }
  36
  37 QVariant FileListModel::data(const QModelIndex & index, int role) const
  38 {
  39         if (role == FLM_LABEL)
  40                 return list.at(index.row()).label;
  41         else if (role == FLM_INDEX)
  42                 return (uint)list.at(index.row()).dbIndex;
  43         else if (role == FLM_FILENAME)
  44                 return list.at(index.row()).filename;
  45         else if (role == FLM_FILESIZE)
  46                 return (uint)list.at(index.row()).fileSize;
  47         else if (role == FLM_UNIVERSALHDR)
  48                 return (uint)list.at(index.row()).hasUniversalHeader;
  49         else if (role == FLM_FILETYPE)
  50                 return (uint)list.at(index.row()).fileType;
  51         else if (role == FLM_CRC)
  52                 return (uint)list.at(index.row()).crc;
  53         else if (role == Qt::DisplayRole)
  54         {
  55                 // The QListView uses this role to do keyboard based searching,
  56                 // so we help it along by giving it what it needs to do the job. :-)
  57                 unsigned long dbIndex = list.at(index.row()).dbIndex;
  58                 QString filename = list.at(index.row()).filename;
  59                 QString nameToMatch;
  60
  61                 // Pull name from file DB, otherwise, use the filename...
  62                 if (dbIndex != 0xFFFFFFFF)
  63                         nameToMatch = romList[dbIndex].name;
  64                 else
  65                 {
  66                         int lastSlashPos = filename.lastIndexOf('/');
  67                         nameToMatch = filename.mid(lastSlashPos + 1);
  68                 }
  69
  70                 return nameToMatch;
  71         }
  72
  73         return QVariant();
  74 }
  75
  76 QVariant FileListModel::headerData(int/* section*/, Qt::Orientation/* orientation*/, int role/*= Qt::DisplayRole*/) const
  77 {
  78         // This seems more like what we want...
  79         if (role == Qt::SizeHintRole)
  80                 return QSize(1, 1);
  81
  82         return QVariant();
  83 }
  84
  85 void FileListModel::AddData(unsigned long index, QString str, QImage img, unsigned long size)
  86 {
  87         // Assuming that both QString and QImage have copy constructors, this should work.
  88         FileListData data;
  89
  90         data.dbIndex = index;
  91         data.fileSize = size;
  92         data.filename = str;
  93         data.label = img;
  94
  95         // Let's try this:
  96         beginInsertRows(QModelIndex(), list.size(), list.size());
  97         list.push_back(data);
  98         endInsertRows();
  99 }
 100
 101 void FileListModel::AddData(unsigned long index, QString str, QImage img, unsigned long size, bool univHdr, uint32_t type, uint32_t fileCrc)
 102 {
 103         // Assuming that both QString and QImage have copy constructors, this should work.
 104         FileListData data;
 105
 106         data.dbIndex = index;
 107         data.fileSize = size;
 108         data.filename = str;
 109         data.label = img;
 110         data.hasUniversalHeader = univHdr;
 111         data.fileType = type;
 112         data.crc = fileCrc;
 113
 114         // Let's try this:
 115         beginInsertRows(QModelIndex(), list.size(), list.size());
 116         list.push_back(data);
 117         endInsertRows();
 118 }
 119
 120 void FileListModel::ClearData(void)
 121 {
 122         if (list.size() == 0)
 123                 return;
 124
 125         beginResetModel();
 126         list.clear();
 127         endResetModel();
 128 }
 129
 130 //FileListData FileListModel::GetData(const QModelIndex & index) const
 131 //{
 132 //      return list.at(index.row());
 133 //}