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91 lines
2.9 KiB
91 lines
2.9 KiB
/****************************************************************************
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "view.h"
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#include <qlabel.h>
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#include <qpushbutton.h>
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#include <qmultilineedit.h>
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#include <qfiledialog.h>
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View::View()
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: QVBox()
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{
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// setup the GUI
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setSpacing( 5 );
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setMargin( 5 );
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QLabel *l = new QLabel( this );
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l->setAlignment( Qt::WordBreak ),
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l->setText( tr( "The button below opens the QFileDialog and you "
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"can choose a file then which is downloaded and "
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"opened below then. You can use for that the <b>local "
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"filesystem</b> using the file protocol, you can download "
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"files from an <b>FTP</b> server using the ftp protocol and "
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"you can download and open <b>USENET</b> articles using the "
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"demo implementation of the nntp protocol of this "
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"example (<i>This implementation of the nntp protocol is a very "
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"basic and incomplete one, so you need to connect to a news server "
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"which allows reading without authentification</i>)\n"
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"To open a file from the local filesystem, enter in the "
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"path combobox of the file dialog a url starting with file "
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"(like <u>file:/usr/bin</u>), to download something from an FTP "
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"server, use something like <u>ftp://ftp.trolltech.com</u> as url, and "
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"for downloading a news article start with an url like "
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"<u>nntp://news.tu-graz.ac.at</u> " ) );
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QPushButton *b = new QPushButton( tr( "Open a file..." ), this );
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connect( b, SIGNAL( clicked() ),
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this, SLOT( downloadFile() ) );
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fileView = new QMultiLineEdit( this );
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fileView->setReadOnly( TRUE );
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// if new data comes in, display it
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connect( &op, SIGNAL( data( const QByteArray &, QNetworkOperation * ) ),
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this, SLOT( newData( const QByteArray & ) ) );
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}
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void View::downloadFile()
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{
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// QString file = QFileDialog::getOpenFileName();
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// under Windows you must not use the native file dialog
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QString file = getOpenFileName();
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if ( !file.isEmpty() ) {
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// clear the view
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fileView->clear();
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// download the data
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op = file;
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op.get();
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}
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}
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QString View::getOpenFileName()
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{
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static QString workingDirectory = QDir::currentDirPath();
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QFileDialog *dlg = new QFileDialog( workingDirectory,
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QString::null, 0, 0, TRUE );
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dlg->setCaption( QFileDialog::tr( "Open" ) );
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dlg->setMode( QFileDialog::ExistingFile );
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QString result;
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if ( dlg->exec() == QDialog::Accepted ) {
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result = dlg->selectedFile();
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workingDirectory = dlg->url();
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}
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delete dlg;
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return result;
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}
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void View::newData( const QByteArray &ba )
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{
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// append new data
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fileView->append( ba );
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}
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