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/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. 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 );
}
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