qmdirbrowseritem.cpp

可以播放MP3,wma等文件格式的播放器

/* qmdirbrowseritem.cpp
 *
 * $Id: qmdirbrowseritem.cpp,v 1.14.2.3 2002/10/11 06:39:03 kyllingstad Exp $
 *
 * Apollo sound player: http://www.apolloplayer.org
 * Copyright(C) 2000-2002 Apollo Team.  See CREDITS file.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The GNU General Public License is also available online at:
 *
 * http://www.gnu.org/copyleft/gpl.html
 */

#include "qmdirbrowseritem.h"
// #include "qmpixmapsupplier.h"

#include "qmconfig.h"

#include <iostream>

#include <qdir.h>
#include <qfileinfo.h>
#include <qlistview.h>
#include <qtextstream.h>
#include <qstringlist.h>

/* Disables false warning in Visual Studio about dynamic_cast */

#ifdef _WS_WIN_
#pragma warning(disable: 4541)
#endif

/**
 * @file qmdirbrowseritem.cpp
 * @brief Directory widget for the browser
 */

struct stat QmDirBrowserItem::statBuf;

/*!
  \class QmDirBrowserItem qmdirbrowseritem.h
  \brief Represents a directory in the browser.

  Instances of this class represents directories in the directory tree.
*/

QmDirBrowserItem::QmDirBrowserItem(
	QListView *parent,
	const QString &text,
	const QString &filename)
	: QmBrowserItem(parent, 0, text, filename)
{
//     This is (unsurprisingly) painfully slow:
//     (didn't bother trying to optimise it since the c-way is ok)
//     QDir tmp(filename);
//     tmp.setFilter(QDir::Dirs);
//     QStringList subdirs = tmp.entryList();
//     setExpandable(subdirs.count() > 2);
    if (stat(filename.latin1(), &statBuf) == 0) 
        setExpandable(statBuf.st_nlink > 2);
//     QmPixmapSupplier *sup = QmPixmapSupplier::instance();
//     setPixmap( 0, sup->pixmap( "icons-folder" ) );
}


QmDirBrowserItem::QmDirBrowserItem(
	QmDirBrowserItem *parent,
	const QString &text,
	const QString &filename)
	: QmBrowserItem(parent, 0, text, filename)
{
    if (stat(filename.latin1(), &statBuf) == 0) 
        setExpandable(statBuf.st_nlink > 2);
//     QmPixmapSupplier *sup = QmPixmapSupplier::instance();
//     setPixmap( 0, sup->pixmap( "icons-folder" ) );
}



QmDirBrowserItem::~QmDirBrowserItem()
{
}


/*!
  Reads the subfolders of the folder this item is representing if \a o
  is true.

  Based on Qt's dirview example code.
 */

void
QmDirBrowserItem::setOpen(
	bool o)
{
    if ( o && ! childCount() )
	{
        QString s( fileName() );
        QDir thisDir( s );

        if ( ! thisDir.isReadable() )
		{
            setExpandable( false );
            return;
        }

        listView()->setUpdatesEnabled( false );
        const QFileInfoList * files = thisDir.entryInfoList();
		
        if ( files )
		{
            QFileInfoListIterator it( *files );
            QFileInfo * fi;
			
            while( (fi=it.current()) != 0 )
			{
                ++it;
                if ( fi->fileName() == "." || fi->fileName() == ".." )
                    ; // nothing
                else if ( fi->isDir() && fi->isReadable() )
                    (void) new QmDirBrowserItem( this, fi->fileName(), fi->filePath() );
            }
        }
		
        listView()->setUpdatesEnabled( true );
    }
	
    QListViewItem::setOpen( o );
}


/*!
  Saves the item to \a out.  Only root items are saved, i.e. items
  with depth 0.
*/

void
QmDirBrowserItem::save(
	QTextStream &out) const
{
	if(depth() > 0)
		return;

	QString s1(QmConfig::indent(1));
	QString s2(QmConfig::indent(2));

	const QmBrowserItem *item = this;

	while(item != 0)
	{
		out << s1 << "<dir>\n"
			<< s2 << "<name>" << "<![CDATA[" << item->text(0) << "]]>" << "</name>\n"
			<< s2 << "<path>" << "<![CDATA[" << item->fileName() << "]]>" << "</path>\n"
			<< s2 << "<open>" << item->isOpen() << "</open>\n"
			<< s1 << "</dir>\n";
		
		// It's too bad we have to do a dynamic cast so often, but there's no way around it.

		item = dynamic_cast<const QmBrowserItem*>(item->nextSibling());
	}
}