/****************************************************************************** $Id: qt/view.cpp   3.3.4   edited May 27 2003 $**** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.**** This file is part of an example program for Qt.  This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "view.h"#include <qlabel.h>#include <qpushbutton.h>#include <qmultilineedit.h>#include <qfiledialog.h>View::View()    : QVBox(){    // setup the GUI    setSpacing( 5 );    setMargin( 5 );    QLabel *l = new QLabel( this );    l->setAlignment( Qt::WordBreak ),    l->setText( tr( "The button below opens the QFileDialog and you "		    "can choose a file then which is downloaded and "		    "opened below then. You can use for that the <b>local "		    "filesystem</b> using the file protocol, you can download "		    "files from an <b>FTP</b> server using the ftp protocol and "		    "you can download and open <b>USENET</b> articles using the "		    "demo implementation of the nntp protocol of this "		    "example (<i>This implementation of the nntp protocol is a very "		    "basic and incomplete one, so you need to connect to a news server "		    "which allows reading without authentification</i>)\n"		    "To open a file from the local filesystem, enter in the "		    "path combobox of the file dialog a url starting with file "		    "(like <u>file:/usr/bin</u>), to download something from an FTP "		    "server, use something like <u>ftp://ftp.trolltech.com</u> as url, and "		    "for downloading a news article start with an url like "		    "<u>nntp://news.tu-graz.ac.at</u> " ) );    QPushButton *b = new QPushButton( tr( "Open a file..." ), this );    connect( b, SIGNAL( clicked() ),	     this, SLOT( downloadFile() ) );    fileView = new QMultiLineEdit( this );    fileView->setReadOnly( TRUE );    // if new data comes in, display it    connect( &op, SIGNAL( data( const QByteArray &, QNetworkOperation * ) ),	     this, SLOT( newData( const QByteArray & ) ) );}void View::downloadFile(){    // QString file = QFileDialog::getOpenFileName();    // under Windows you must not use the native file dialog    QString file = getOpenFileName();    if ( !file.isEmpty() ) {	// clear the view	fileView->clear();	// download the data	op = file;	op.get();    }}QString View::getOpenFileName(){    static QString workingDirectory = QDir::currentDirPath();    QFileDialog *dlg = new QFileDialog( workingDirectory,	    QString::null, 0, 0, TRUE );    dlg->setCaption( QFileDialog::tr( "Open" ) );    dlg->setMode( QFileDialog::ExistingFile );    QString result;    if ( dlg->exec() == QDialog::Accepted ) {	result = dlg->selectedFile();	workingDirectory = dlg->url();    }    delete dlg;    return result;}void View::newData( const QByteArray &ba ){    // append new data    fileView->append( ba );}