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path: root/plugins/infowidget/fileview.cpp
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/***************************************************************************
 *   Copyright (C) 2005 by Joris Guisson                                   *
 *   joris.guisson@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 <klocale.h>
#include <kiconloader.h>
#include <kglobal.h>
#include <tdepopupmenu.h>
#include <krun.h>
#include <kmessagebox.h>
#include <kmimetype.h>
#include <util/bitset.h>
#include <util/functions.h>
#include <interfaces/functions.h>
#include <interfaces/torrentinterface.h>
#include <interfaces/torrentfileinterface.h>
#include <tqfileinfo.h>
#include "functions.h"
#include "iwfiletreeitem.h"
#include "iwfiletreediritem.h"
#include "fileview.h"
		
using namespace bt;

namespace kt
{

	FileView::FileView(TQWidget *parent, const char *name)
	    : TDEListView(parent, name),curr_tc(0),multi_root(0),pending_fill(0),next_fill_item(0)
	{
		setFrameShape(TQFrame::NoFrame);
		addColumn( i18n( "File" ) );
    	addColumn( i18n( "Size" ) );
    	addColumn( i18n( "Download" ) );
    	addColumn( i18n( "Preview" ) );
    	addColumn( i18n( "% Complete" ) );
		setShowSortIndicator(true);
		
		context_menu = new TDEPopupMenu(this);
		preview_id = context_menu->insertItem(SmallIcon("fileopen"),i18n("Open"));
	    context_menu->insertSeparator();
		first_id = context_menu->insertItem(i18n("Download First"));
		normal_id = context_menu->insertItem(i18n("Download Normally"));
		last_id = context_menu->insertItem(i18n("Download Last"));
		context_menu->insertSeparator();
		dnd_keep_id = context_menu->insertItem(i18n("Do Not Download"));
		dnd_throw_away_id = context_menu->insertItem(i18n("Delete File(s)"));
		
		
		context_menu->setItemEnabled(preview_id, false);
		context_menu->setItemEnabled(first_id, false);
		context_menu->setItemEnabled(normal_id, false);
		context_menu->setItemEnabled(last_id, false);
		context_menu->setItemEnabled(dnd_keep_id, false);
		context_menu->setItemEnabled(dnd_throw_away_id, false);

		connect(this,TQT_SIGNAL(contextMenu(TDEListView*, TQListViewItem*, const TQPoint& )),
				this,TQT_SLOT(showContextMenu(TDEListView*, TQListViewItem*, const TQPoint& )));
		connect(context_menu, TQT_SIGNAL ( activated ( int ) ), this, TQT_SLOT ( contextItem ( int ) ) );
		connect(this,TQT_SIGNAL(doubleClicked( TQListViewItem*, const TQPoint&, int )),
				this,TQT_SLOT(onDoubleClicked(TQListViewItem*, const TQPoint&, int)));
		
		connect(&fill_timer, TQT_SIGNAL(timeout()), this, TQT_SLOT( fillTreePartial() ) );

		setEnabled(false);
		
		setSelectionMode(TQListView::Extended);
	}


	FileView::~FileView()
	{}
	
#define ITEMS_PER_TICK 100
	
	void FileView::fillTreePartial()
	{
		int cnt = 0;
		while (next_fill_item < curr_tc->getNumFiles() && cnt < ITEMS_PER_TICK)
		{
			TorrentFileInterface & file = curr_tc->getTorrentFile(next_fill_item);
			multi_root->insert(file.getPath(),file);
			cnt++;
			next_fill_item++;
		}
		
		if (next_fill_item >= curr_tc->getNumFiles()) 
		{
			multi_root->setOpen(true);
			setRootIsDecorated(true);
			setEnabled(true);
			multi_root->updatePriorityInformation(curr_tc);
			multi_root->updatePercentageInformation();
			multi_root->updatePreviewInformation(curr_tc);
			fill_timer.stop();
			connect(curr_tc,TQT_SIGNAL(missingFilesMarkedDND( kt::TorrentInterface* )),
				this,TQT_SLOT(refreshFileTree( kt::TorrentInterface* )));
		}
		else
			fill_timer.start(0,true);
	}
    
	void FileView::fillFileTree()
	{
		multi_root = 0;
		clear();
	
		if (!curr_tc)
			return;
	
		if (curr_tc->getStats().multi_file_torrent)
		{
			setEnabled(false);
			multi_root = new IWFileTreeDirItem(this,curr_tc->getStats().torrent_name);
			next_fill_item = 0;
			fillTreePartial();
		}
		else
		{
			const TorrentStats & s = curr_tc->getStats();
			this->setRootIsDecorated(false);
			TDEListViewItem* item = new TDEListViewItem(
					this,
					s.torrent_name,
					BytesToString(s.total_bytes));
	
			item->setPixmap(0,KMimeType::findByPath(s.torrent_name)->pixmap(TDEIcon::Small));
			setEnabled(true);
			connect(curr_tc,TQT_SIGNAL(missingFilesMarkedDND( kt::TorrentInterface* )),
				this,TQT_SLOT(refreshFileTree( kt::TorrentInterface* )));
		}
	}

	void FileView::changeTC(kt::TorrentInterface* tc)
	{
		if (tc == curr_tc)
			return;
	
		curr_tc = tc;
		pending_fill = true;
		fill_timer.stop();
		fillFileTree();
	}
	
	void FileView::update()
	{
		if (!curr_tc)
			return;
		
		if (isVisible() && !pending_fill)
		{
			readyPreview();
			readyPercentage();
		}
	}
	
	void FileView::readyPercentage()
	{
		if (curr_tc && !curr_tc->getStats().multi_file_torrent)
		{
			TQListViewItemIterator it(this);
			if (!it.current())
				return;
						
			const BitSet & bs = curr_tc->downloadedChunksBitSet();
			Uint32 total = bs.getNumBits();
			Uint32 on = bs.numOnBits();			
			double percent = 100.0 * ((double)on/(double)total);
			if (percent < 0.0)
				percent = 0.0;
			else if (percent > 100.0)
				percent = 100.0;
			TDELocale* loc = TDEGlobal::locale();
			it.current()->setText(4,i18n("%1 %").arg(loc->formatNumber(percent,2)));
		}
	}

	void FileView::readyPreview()
	{
		if (curr_tc && !curr_tc->getStats().multi_file_torrent)
		{
			TQListViewItemIterator it(this);
			if (!it.current())
				return;
			
			if (IsMultimediaFile(curr_tc->getStats().output_path))
			{
				if ( curr_tc->readyForPreview() )
					it.current()->setText(3, i18n("Available"));
				else
					it.current()->setText(3, i18n("Pending"));
			}
			else
				it.current()->setText(3, i18n("No"));
			
		}
	}
	
	void FileView::showContextMenu(TDEListView* ,TQListViewItem*,const TQPoint & p)
	{
		const TorrentStats & s = curr_tc->getStats();
		// don't show a menu if item is 0 or if it is a directory
		
		
		
		TQPtrList<TQListViewItem> sel = selectedItems();
		switch(sel.count())
		{
		case 0:
			return;
			break;
		case 1:
			break;
		default:
			context_menu->setItemEnabled(first_id, true);
			context_menu->setItemEnabled(normal_id, true);
			context_menu->setItemEnabled(last_id, true);
			context_menu->setItemEnabled(preview_id, false);
			context_menu->setItemEnabled(dnd_keep_id,true);
			context_menu->setItemEnabled(dnd_throw_away_id,true);
			context_menu->popup(p);
			return;
			break;
		}
		TQListViewItem* item = sel.getFirst();

		context_menu->setItemEnabled(first_id, false);
		context_menu->setItemEnabled(normal_id, false);
		context_menu->setItemEnabled(last_id, false);
		if (s.multi_file_torrent && item->childCount() == 0)
		{
			kt::TorrentFileInterface & file = ((FileTreeItem*)item)->getTorrentFile();
			if (!file.isNull())
			{
				context_menu->setItemEnabled(preview_id, true);
				this->preview_path = "cache" + bt::DirSeparator() + file.getPath();
				
				switch(file.getPriority())
				{
				case FIRST_PRIORITY:
					context_menu->setItemEnabled(normal_id, true);
					context_menu->setItemEnabled(last_id, true);
					context_menu->setItemEnabled(dnd_keep_id,true);
					context_menu->setItemEnabled(dnd_keep_id,true);
					context_menu->setItemEnabled(dnd_throw_away_id,true);
					break;
				case LAST_PRIORITY:
					context_menu->setItemEnabled(first_id, true);
					context_menu->setItemEnabled(normal_id, true);
					context_menu->setItemEnabled(dnd_keep_id,true);
					context_menu->setItemEnabled(dnd_keep_id,true);
					context_menu->setItemEnabled(dnd_throw_away_id,true);
					break;
				case EXCLUDED:
					context_menu->setItemEnabled(first_id,true);
					context_menu->setItemEnabled(normal_id,true);
					context_menu->setItemEnabled(last_id, true);
					context_menu->setItemEnabled(dnd_keep_id,true);
					context_menu->setItemEnabled(dnd_throw_away_id,false);
					break;
				case ONLY_SEED_PRIORITY:
					context_menu->setItemEnabled(first_id,true);
					context_menu->setItemEnabled(normal_id,true);
					context_menu->setItemEnabled(last_id, true);
					context_menu->setItemEnabled(dnd_keep_id,false);
					context_menu->setItemEnabled(dnd_throw_away_id,true);
					break;
				case PREVIEW_PRIORITY:
				default:
					context_menu->setItemEnabled(first_id, true);
					context_menu->setItemEnabled(normal_id,false);
					context_menu->setItemEnabled(last_id, true);
					context_menu->setItemEnabled(dnd_keep_id,true);
					context_menu->setItemEnabled(dnd_throw_away_id,true);
					break;
				}
			}
			else
			{
				context_menu->setItemEnabled(preview_id, false);
			}
		}
		else
		{
			bool val = item->childCount() != 0;
			context_menu->setItemEnabled(first_id, val);
			context_menu->setItemEnabled(normal_id, val);
			context_menu->setItemEnabled(last_id, val);
			context_menu->setItemEnabled(dnd_keep_id,val);
			context_menu->setItemEnabled(dnd_throw_away_id,val);
			
			context_menu->setItemEnabled(preview_id, true);
			if (s.multi_file_torrent)
			{
				FileTreeDirItem* dir = ((FileTreeDirItem*)item);
				preview_path = "cache" + dir->getPath();
			}
			else
			{
				preview_path = "cache";
			}
		}

		context_menu->popup(p);
	}
	
	void FileView::contextItem(int id)
	{
		TQPtrList<TQListViewItem> sel = selectedItems();
		
		Priority newpriority = NORMAL_PRIORITY;
		if(id == this->preview_id)
		{
			new KRun(KURL::fromPathOrURL(this->curr_tc->getTorDir()+preview_path), 0, true, true);
			return;
		}
		else if (id == dnd_throw_away_id)
		{
			Uint32 n = sel.count();
			if (n == 1) // single item can be a directory
			{ 
				// the number of the beast > 1
				n = (*sel.begin())->childCount() == 0 ? 1 : 666;
			} 
			
			TQString msg = i18n(
					"You will lose all data in this file, are you sure you want to do this ?",
					"You will lose all data in these files, are you sure you want to do this ?",n);
					
			if (KMessageBox::warningYesNo(0,msg) == KMessageBox::No)
				return; 
			newpriority = EXCLUDED;
		}
		else if(id == this->first_id)
		{
			newpriority = FIRST_PRIORITY;
		}
		else if(id == this->last_id)
		{
			newpriority = LAST_PRIORITY;
		}
		else if(id == this->normal_id)
		{
			newpriority = NORMAL_PRIORITY;
		}
		else if (id == dnd_keep_id)
		{
			newpriority = ONLY_SEED_PRIORITY;
		}
		

		
		TQPtrList<TQListViewItem>::Iterator i = sel.begin();
		while(i != sel.end())
		{
			TQListViewItem* item = *i;
			changePriority(item, newpriority);
			multi_root->updatePriorityInformation(curr_tc);
			i++;
		}
	}
	
	void FileView::changePriority(TQListViewItem* item, Priority newpriority)
	{	
		if(item->childCount() == 0)
		{
			FileTreeItem* fti = (FileTreeItem*)item;
			if (newpriority == EXCLUDED)
			{
				fti->setChecked(false,false);
			}
			else if (newpriority == ONLY_SEED_PRIORITY)
			{
				fti->setChecked(false,true);
			}
			else 
			{
				if (!fti->isOn())
					fti->setChecked(true,true);
				fti->getTorrentFile().setPriority(newpriority);
			}
			return;
		}
		TQListViewItem* myChild = item->firstChild();
		while( myChild )
		{
			changePriority(myChild, newpriority);
			myChild = myChild->nextSibling();
		}
	}
	
	void FileView::refreshFileTree(kt::TorrentInterface* tc)
	{
		if (!tc || curr_tc != tc)
			return;
		
		if (multi_root)
			multi_root->updateDNDInformation();
	}
	
	void FileView::onDoubleClicked(TQListViewItem* item,const TQPoint & ,int )
	{
		if (!curr_tc)
			return;
		
		const TorrentStats & s = curr_tc->getStats();
		
		if (s.multi_file_torrent)
		{
			if (item->childCount() == 0)
			{
				// file
				FileTreeItem* file = (FileTreeItem*)item;
				TQString path = "cache" + bt::DirSeparator() + file->getTorrentFile().getPath();
				new KRun(KURL::fromPathOrURL(curr_tc->getTorDir() + path), 0, true, true);
			}
			else
			{
				// directory
				FileTreeDirItem* dir = ((FileTreeDirItem*)item);
				new KRun(KURL::fromPathOrURL(curr_tc->getTorDir() + "cache" + dir->getPath()), 0, true, true);
			}
		}
		else
		{
			TQFileInfo fi(curr_tc->getTorDir()+"cache");
			new KRun(KURL::fromPathOrURL(fi.readLink()), 0, true, true);
		}
	}
}

#include "fileview.moc"