transmission/qt/torrent-model.cc

257 lines
5.6 KiB
C++

/*
* This file Copyright (C) 2009-2010 Mnemosyne LLC
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
* $Id$
*/
#include <cassert>
#include <iostream>
#include <libtransmission/transmission.h>
#include <libtransmission/bencode.h>
#include "torrent-delegate.h"
#include "torrent-model.h"
void
TorrentModel :: clear( )
{
myIdToRow.clear( );
myIdToTorrent.clear( );
foreach( Torrent * tor, myTorrents ) delete tor;
myTorrents.clear( );
reset( );
}
int
TorrentModel :: rowCount( const QModelIndex& parent ) const
{
Q_UNUSED( parent );
return myTorrents.size( );
}
QVariant
TorrentModel :: data( const QModelIndex& index, int role ) const
{
QVariant var;
const int row = index.row( );
if( row<0 || row>=myTorrents.size() )
return QVariant( );
const Torrent* t = myTorrents.at( row );
switch( role )
{
case Qt::DisplayRole:
var = QString( t->name() );
break;
case Qt::DecorationRole:
var = t->getMimeTypeIcon( );
break;
case TorrentRole:
var = qVariantFromValue( t );
break;
default:
//std::cerr << "Unhandled role: " << role << std::endl;
break;
}
return var;
}
/***
****
***/
void
TorrentModel :: addTorrent( Torrent * t )
{
myIdToTorrent.insert( t->id( ), t );
myIdToRow.insert( t->id( ), myTorrents.size( ) );
myTorrents.append( t );
}
TorrentModel :: TorrentModel( Prefs& prefs ):
myPrefs( prefs )
{
}
TorrentModel :: ~TorrentModel( )
{
clear( );
}
/***
****
***/
Torrent*
TorrentModel :: getTorrentFromId( int id )
{
id_to_torrent_t::iterator it( myIdToTorrent.find( id ) );
return it == myIdToTorrent.end() ? 0 : it.value( );
}
const Torrent*
TorrentModel :: getTorrentFromId( int id ) const
{
id_to_torrent_t::const_iterator it( myIdToTorrent.find( id ) );
return it == myIdToTorrent.end() ? 0 : it.value( );
}
/***
****
***/
void
TorrentModel :: onTorrentChanged( int torrentId )
{
const int row( myIdToRow.value( torrentId, -1 ) );
if( row >= 0 ) {
QModelIndex qmi( index( row, 0 ) );
dataChanged( qmi, qmi );
}
}
void
TorrentModel :: removeTorrents( tr_benc * torrents )
{
int i = 0;
tr_benc * child;
while(( child = tr_bencListChild( torrents, i++ ))) {
int64_t intVal;
if( tr_bencGetInt( child, &intVal ) )
removeTorrent( intVal );
}
}
void
TorrentModel :: updateTorrents( tr_benc * torrents, bool isCompleteList )
{
QList<Torrent*> newTorrents;
QSet<int> oldIds( getIds( ) );
QSet<int> newIds;
int updatedCount = 0;
if( tr_bencIsList( torrents ) )
{
size_t i( 0 );
tr_benc * child;
while(( child = tr_bencListChild( torrents, i++ )))
{
int64_t id;
if( tr_bencDictFindInt( child, "id", &id ) )
{
newIds.insert( id );
Torrent * tor = getTorrentFromId( id );
if( tor == 0 )
{
tor = new Torrent( myPrefs, id );
tor->update( child );
newTorrents.append( tor );
connect( tor, SIGNAL(torrentChanged(int)), this, SLOT(onTorrentChanged(int)));
}
else
{
tor->update( child );
++updatedCount;
}
}
}
}
if( !newTorrents.isEmpty( ) )
{
const int oldCount( rowCount( ) );
const int newCount( oldCount + newTorrents.size( ) );
QSet<int> ids;
beginInsertRows( QModelIndex(), oldCount, newCount - 1 );
foreach( Torrent * tor, newTorrents ) {
addTorrent( tor );
ids.insert( tor->id( ) );
}
endInsertRows( );
emit torrentsAdded( ids );
}
if( isCompleteList )
{
QSet<int> removedIds( oldIds );
removedIds -= newIds;
foreach( int id, removedIds )
removeTorrent( id );
}
}
void
TorrentModel :: removeTorrent( int id )
{
const int row = myIdToRow.value( id, -1 );
if( row >= 0 )
{
Torrent * tor = myIdToTorrent.value( id, 0 );
beginRemoveRows( QModelIndex(), row, row );
// make the myIdToRow map consistent with list view/model
for( QMap<int,int>::iterator i = myIdToRow.begin(); i != myIdToRow.end(); ++i )
if( i.value() > row )
--i.value();
myIdToRow.remove( id );
myIdToTorrent.remove( id );
myTorrents.remove( myTorrents.indexOf( tor ) );
endRemoveRows( );
delete tor;
}
}
Speed
TorrentModel :: getUploadSpeed( ) const
{
Speed up;
foreach( const Torrent * tor, myTorrents )
up += tor->uploadSpeed( );
return up;
}
Speed
TorrentModel :: getDownloadSpeed( ) const
{
Speed down;
foreach( const Torrent * tor, myTorrents )
down += tor->downloadSpeed( );
return down;
}
QSet<int>
TorrentModel :: getIds( ) const
{
QSet<int> ids;
foreach( const Torrent * tor, myTorrents )
ids.insert( tor->id( ) );
return ids;
}
bool
TorrentModel :: hasTorrent( const QString& hashString ) const
{
foreach( const Torrent * tor, myTorrents )
if( tor->hashString( ) == hashString )
return true;
return false;
}