1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for TQt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include "view.h"
#include <tqlabel.h>
#include <ntqpushbutton.h>
#include <ntqmultilineedit.h>
#include <tqfiledialog.h>
View::View()
: TQVBox()
{
// setup the GUI
setSpacing( 5 );
setMargin( 5 );
TQLabel *l = new TQLabel( this );
l->setAlignment( TQt::WordBreak ),
l->setText( tr( "The button below opens the TQFileDialog 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> " ) );
TQPushButton *b = new TQPushButton( tr( "Open a file..." ), this );
connect( b, TQ_SIGNAL( clicked() ),
this, TQ_SLOT( downloadFile() ) );
fileView = new TQMultiLineEdit( this );
fileView->setReadOnly( TRUE );
// if new data comes in, display it
connect( &op, TQ_SIGNAL( data( const TQByteArray &, TQNetworkOperation * ) ),
this, TQ_SLOT( newData( const TQByteArray & ) ) );
}
void View::downloadFile()
{
// TQString file = TQFileDialog::getOpenFileName();
// under Windows you must not use the native file dialog
TQString file = getOpenFileName();
if ( !file.isEmpty() ) {
// clear the view
fileView->clear();
// download the data
op = file;
op.get();
}
}
TQString View::getOpenFileName()
{
static TQString workingDirectory = TQDir::currentDirPath();
TQFileDialog *dlg = new TQFileDialog( workingDirectory,
TQString::null, 0, 0, TRUE );
dlg->setCaption( TQFileDialog::tr( "Open" ) );
dlg->setMode( TQFileDialog::ExistingFile );
TQString result;
if ( dlg->exec() == TQDialog::Accepted ) {
result = dlg->selectedFile();
workingDirectory = dlg->url();
}
delete dlg;
return result;
}
void View::newData( const TQByteArray &ba )
{
// append new data
fileView->append( ba );
}
|
