iwfiletreemodel.cpp

Go to the documentation of this file.

/***************************************************************************
 *   Copyright (C) 2007 by Joris Guisson and Ivan Vasic                    *
 *   joris.guisson@gmail.com                                               *
 *   ivasic@gmail.com                                                      *
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 *   This program 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 ***************************************************************************/
#include "iwfiletreemodel.h"

#include <math.h>
#include <klocale.h>
#include <kglobal.h>
#include <util/functions.h>
#include <interfaces/torrentinterface.h>
#include <interfaces/torrentfileinterface.h>

using namespace bt;

namespace kt
{

    IWFileTreeModel::IWFileTreeModel(bt::TorrentInterface* tc,QObject* parent)
            : TorrentFileTreeModel(tc,KEEP_FILES,parent)
    {
        mmfile = IsMultimediaFile(tc->getStats().output_path);
        preview = false;
        percentage = 0;

        if (root)
        {
            BitSet d = tc->downloadedChunksBitSet();
            d -= tc->onlySeedChunksBitSet();
            root->initPercentage(tc,d);
        }
    }


    IWFileTreeModel::~IWFileTreeModel()
    {
    }

    int IWFileTreeModel::columnCount(const QModelIndex & /*parent*/) const
    {
        return 5;
    }
    
    QVariant IWFileTreeModel::headerData(int section, Qt::Orientation orientation,int role) const
    {
        if (role != Qt::DisplayRole || orientation != Qt::Horizontal)
            return QVariant();
        
        if (section < 2)
            return TorrentFileTreeModel::headerData(section,orientation,role);
        
        switch (section)
        {
            case 2: return i18n("Priority");
            case 3: return i18n("Preview");
            // xgettext: no-c-format
            case 4: return i18nc("Percent of File Downloaded", "% Complete");
            default: return QVariant();
        }
    }
    
    static QString PriorityString(const bt::TorrentFileInterface* file)
    {
        switch(file->getPriority())
        {
            case FIRST_PRIORITY: return i18nc("Download first", "First");
            case LAST_PRIORITY: return i18nc("Download last", "Last");
            case ONLY_SEED_PRIORITY: 
            case EXCLUDED: 
            case PREVIEW_PRIORITY: 
                return QString();
            default:return i18nc("Download normally(not as first or last)", "Normal");
        }
    }
    
    QVariant IWFileTreeModel::data(const QModelIndex & index, int role) const
    {
        Node* n = 0;
        if (index.column() < 2 && role != Qt::ForegroundRole)
            return TorrentFileTreeModel::data(index,role);
        
        if (!index.isValid() || !(n = (Node*)index.internalPointer()))
            return QVariant();
        
        if (role == Qt::ForegroundRole && index.column() == 2 && tc->getStats().multi_file_torrent && n->file)
        {
            const bt::TorrentFileInterface* file = n->file;
            switch (file->getPriority())
            {
                /*case FIRST_PRIORITY:
                    return InfoWidgetPluginSettings::firstColor();
                case LAST_PRIORITY: 
                    return InfoWidgetPluginSettings::lastColor();
                case NORMAL_PRIORITY:
                    return InfoWidgetPluginSettings::normalColor();
                case ONLY_SEED_PRIORITY: 
                case EXCLUDED: 
                case PREVIEW_PRIORITY:*/ 
                default:
                    return QVariant();
            }
        }
            
        if (role == Qt::DisplayRole)
            return displayData(n,index);
        else if (role == Qt::UserRole)
            return sortData(n,index);
        
        return QVariant();
    }

    QVariant IWFileTreeModel::displayData(Node* n,const QModelIndex & index) const
    {
        if (tc->getStats().multi_file_torrent && n->file)
        {
            const bt::TorrentFileInterface* file = n->file;
            switch (index.column())
            {
                case 2: return PriorityString(file);
                case 3: 
                    if (file->isMultimedia())
                    {
                        if (file->isPreviewAvailable())
                            return i18nc("preview available", "Available");
                        else
                            return i18nc("Preview pending", "Pending");
                    }
                    else
                        return i18nc("No preview available", "No");
                case 4: 
                    if (file->getPriority() == ONLY_SEED_PRIORITY || file->getPriority() == EXCLUDED)
                        return QVariant();
                    else
                        return ki18n("%1 %").subs(n->percentage, 0, 'f', 2).toString();
                default: return QVariant();
            }   
        }
        else if (!tc->getStats().multi_file_torrent)
        {
            switch (index.column())
            {
                case 2: return QVariant();
                case 3: 
                    if (mmfile)
                    {
                        if (tc->readyForPreview())
                            return i18nc("Preview available", "Available");
                        else
                            return i18nc("Preview pending", "Pending");
                    }
                    else
                        return i18nc("No preview available", "No");
                case 4: 
                    return ki18n("%1 %").subs(bt::Percentage(tc->getStats()), 0, 'f', 2).toString();
                default: return QVariant();
            }
        }
        else if (tc->getStats().multi_file_torrent && index.column() == 4)
        {
            return ki18n("%1 %").subs(n->percentage, 0, 'f', 2).toString();
        }
        
        return QVariant();
    }
    
    QVariant IWFileTreeModel::sortData(Node* n,const QModelIndex & index) const
    {
        if (tc->getStats().multi_file_torrent && n->file)
        {
            const bt::TorrentFileInterface* file = n->file;
            switch (index.column())
            {
                case 2: return (int)file->getPriority();
                case 3: 
                    if (file->isMultimedia())
                    {
                        if (file->isPreviewAvailable())
                            return 3;
                        else
                            return 2;
                    }
                    else
                        return 1;
                case 4: 
                    return n->percentage;
            }   
        }
        else if (!tc->getStats().multi_file_torrent)
        {
            switch (index.column())
            {
                case 2: return QVariant();
                case 3: 
                    if (mmfile)
                    {
                        if (tc->readyForPreview())
                            return 3;
                        else
                            return 2;
                    }
                    else
                        return 1;
                case 4: 
                    return bt::Percentage(tc->getStats());
            }
        }
        else if (tc->getStats().multi_file_torrent && index.column() == 4)
        {
            return n->percentage;
        }
        
        return QVariant();
    }
    
    
    bool IWFileTreeModel::setData(const QModelIndex & index, const QVariant & value, int role)
    {
        if (role == Qt::CheckStateRole)
            return TorrentFileTreeModel::setData(index,value,role);
        
        if (!index.isValid() || role != Qt::UserRole)
            return false;
    
        Node* n = static_cast<Node*>(index.internalPointer());
        if (!n)
            return false;
        
        if (!n->file)
        {
            for (int i = 0;i < n->children.count();i++)
            {
                // recurse down the tree
                setData(index.child(i,0),value,role);
            }
        }
        else
        {
            bt::TorrentFileInterface* file = n->file;
            Priority prio = (bt::Priority)value.toInt();
            Priority old = file->getPriority();
            
            if (prio != old)
            {
                file->setPriority(prio);
                dataChanged(createIndex(index.row(),0),createIndex(index.row(),4));
                QModelIndex parent = index.parent();
                if (parent.isValid())
                    dataChanged(parent,parent); // parent needs to be updated to 
            }
        }
        
        return true;
    }
    
    void IWFileTreeModel::filePercentageChanged(bt::TorrentFileInterface* file,float percentage)
    {
        Q_UNUSED(percentage)
        update(index(0,0,QModelIndex()),file,4);
    }
    
    void IWFileTreeModel::filePreviewChanged(bt::TorrentFileInterface* file,bool preview)
    {
        Q_UNUSED(preview)
        update(index(0,0,QModelIndex()),file,3);
    }
    
    void IWFileTreeModel::update(const QModelIndex & idx,bt::TorrentFileInterface* file,int col)
    {
        Node* n = (Node*)idx.internalPointer();
        if (n->file && n->file == file)
        {
            QModelIndex i = createIndex(idx.row(),col,n);
            emit dataChanged(i,i);
            if(col == 4)
            {
                // update percentages along the tree
                // this will go back up the tree and update the percentage of 
                // all directories involved
                BitSet d = tc->downloadedChunksBitSet();
                d -= tc->onlySeedChunksBitSet();
                n->updatePercentage(d);
                
                // emit necessary signals
                QModelIndex parent = idx.parent();
                while (parent.isValid())
                {
                    Node* nd = (Node*)parent.internalPointer();
                    i = createIndex(parent.row(),4,nd);
                    emit dataChanged(i,i);
                    parent = parent.parent();
                }
            }
        }
        else
        {
            for (int i = 0;i < n->children.count();i++)
            {
                // recurse down the tree
                update(idx.child(i,0),file,col);
            }
        }
    }
    
    void IWFileTreeModel::update()
    {
        if (!tc->getStats().multi_file_torrent)
        {
            bool changed = false;
            bool np = mmfile && tc->readyForPreview();
            if (preview != np)
            {
                preview = np;
                changed = true;
            }
            
            double perc = bt::Percentage(tc->getStats());
            if (fabs(perc - percentage) > 0.01)
            {
                percentage = perc;
                changed = true;
            }
            
            if (changed)
                dataChanged(createIndex(0,2),createIndex(0,4));
        }
    }
}

#include "iwfiletreemodel.moc"