ftpmainwindow.cpp.bak

qt代码的网络编程

/****************************************************************************
** $Id: qt/examples/ftpclient/ftpmainwindow.cpp   2.3.8   edited 2004-08-05 $
**
** 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 "ftpmainwindow.h"
#include "ftpview.h"

#include <qvbox.h>
#include <qhbox.h>
#include <qsplitter.h>
#include <qcombobox.h>
#include <qlabel.h>
#include <qspinbox.h>
#include <qlineedit.h>
#include <qpushbutton.h>
#include <qmessagebox.h>
#include <qprogressbar.h>
#include <qdir.h>
#include <qinputdialog.h>
#include <qapplication.h>
#include <qstatusbar.h>

FtpMainWindow::FtpMainWindow()
    : QMainWindow(),
      localOperator( "/" )
{
    setup();

    // connect to the signals of the local QUrlOperator - this will be used to
    // work on the local file system (listing dirs, etc.) and to copy files
    // TO the local filesystem (downloading)
    connect( &localOperator, SIGNAL( newChildren( const QValueList<QUrlInfo> &, QNetworkOperation * ) ),
	     leftView, SLOT( slotInsertEntries( const QValueList<QUrlInfo> & ) ) );
    connect( &localOperator, SIGNAL( start( QNetworkOperation * ) ),
	     this, SLOT( slotLocalStart( QNetworkOperation *) ) );
    connect( &localOperator, SIGNAL( finished( QNetworkOperation * ) ),
	     this, SLOT( slotLocalFinished( QNetworkOperation *) ) );
    connect( leftView, SIGNAL( itemSelected( const QUrlInfo & ) ),
	     this, SLOT( slotLocalDirChanged( const QUrlInfo & ) ) );
    connect( &localOperator, SIGNAL( dataTransferProgress( int, int, QNetworkOperation * ) ),
             this, SLOT( slotLocalDataTransferProgress( int, int, QNetworkOperation * ) ) );

    // connect to the signals of the remote QUrlOperator - this will be used to
    // work on the remote file system (on the FTP Server) and to copy files
    // TO the ftp server (uploading)
    connect( &remoteOperator, SIGNAL( newChildren( const QValueList<QUrlInfo> &, QNetworkOperation * ) ),
	     rightView, SLOT( slotInsertEntries( const QValueList<QUrlInfo> & ) ) );
    connect( &remoteOperator, SIGNAL( start( QNetworkOperation * ) ),
	     this, SLOT( slotRemoteStart( QNetworkOperation *) ) );
    connect( &remoteOperator, SIGNAL( finished( QNetworkOperation * ) ),
	     this, SLOT( slotRemoteFinished( QNetworkOperation *) ) );
    connect( rightView, SIGNAL( itemSelected( const QUrlInfo & ) ),
	     this, SLOT( slotRemoteDirChanged( const QUrlInfo & ) ) );
    connect( &remoteOperator, SIGNAL( dataTransferProgress( int, int, QNetworkOperation * ) ),
             this, SLOT( slotRemoteDataTransferProgress( int, int, QNetworkOperation * ) ) );
    connect( &remoteOperator, SIGNAL( connectionStateChanged( int, const QString & ) ),
             this, SLOT( slotConnectionStateChanged( int, const QString & ) ) );

    // read the local filesystem at the beginning once
    localOperator.listChildren();

    // create status bar
    (void)statusBar();
}

void FtpMainWindow::setupLeftSide()
{
    // Setup the left side of the GUI, this is the listview
    // of the local filesystem

    QVBox *layout = new QVBox( splitter );
    layout->setSpacing( 5 );
    layout->setMargin( 5 );

    QHBox *h = new QHBox( layout );
    h->setSpacing( 5 );
    QLabel *l = new QLabel( tr( "Local Path:" ), h );
    l->setFixedWidth( l->sizeHint().width() );
    localCombo = new QComboBox( TRUE, h );
    localCombo->insertItem( "/" );

    connect( localCombo, SIGNAL( activated( const QString & ) ),
	     this, SLOT( slotLocalDirChanged( const QString & ) ) );

    leftView = new FtpView( layout );

    QHBox *bottom = new QHBox( layout );
    bottom->setSpacing( 5 );
    QPushButton *bMkdir = new QPushButton( tr( "New Directory" ), bottom );
    QPushButton *bRemove = new QPushButton( tr( "Remove" ), bottom );
    connect( bMkdir, SIGNAL( clicked() ),
	     this, SLOT( slotLocalMkdir() ) );
    connect( bRemove, SIGNAL( clicked() ),
	     this, SLOT( slotLocalRemove() ) );

    splitter->setResizeMode( layout, QSplitter::Stretch );
}

void FtpMainWindow::setupRightSide()
{
    // Setup the right side of the GUI, this is the listview
    // of the remote filesystem (FTP), needs also lineedits/combos
    // for username, password, etc.

    QVBox *layout = new QVBox( splitter );
    layout->setSpacing( 5 );
    layout->setMargin( 5 );

    QHBox *h = new QHBox( layout );
    h->setSpacing( 5 );
    QLabel *l = new QLabel( tr( "Remote Host:" ), h );
    l->setFixedWidth( l->sizeHint().width() );
    remoteHostCombo = new QComboBox( TRUE, h );

    l = new QLabel( tr( "Port:" ), h );
    l->setFixedWidth( l->sizeHint().width() );
    portSpin = new QSpinBox( 0, 32767, 1, h );
    portSpin->setValue( 21 );
    portSpin->setFixedWidth( portSpin->sizeHint().width() );
    remoteOperator.setPort( portSpin->value() );

    h = new QHBox( layout );
    h->setSpacing( 5 );
    l = new QLabel( tr( "Remote Path:" ), h );
    l->setFixedWidth( l->sizeHint().width() );
    remotePathCombo = new QComboBox( TRUE, h );

    h = new QHBox( layout );
    h->setSpacing( 5 );
    l = new QLabel( tr( "Username:" ), h );
    l->setFixedWidth( l->sizeHint().width() );
    userCombo = new QComboBox( TRUE, h );

    l = new QLabel( tr( "Password:" ), h );
    l->setFixedWidth( l->sizeHint().width() );
    passLined = new QLineEdit( h );
    passLined->setEchoMode( QLineEdit::Password );

    rightView = new FtpView( layout );

    QHBox *bottom = new QHBox( layout );
    bottom->setSpacing( 5 );
    QPushButton *bMkdir = new QPushButton( tr( "New Directory" ), bottom );
    QPushButton *bRemove = new QPushButton( tr( "Remove" ), bottom );
    connect( bMkdir, SIGNAL( clicked() ),
	     this, SLOT( slotRemoteMkdir() ) );
    connect( bRemove, SIGNAL( clicked() ),
	     this, SLOT( slotRemoteRemove() ) );

    splitter->setResizeMode( layout, QSplitter::Stretch );

    connect( remotePathCombo, SIGNAL( activated( const QString & ) ),
	     this, SLOT( slotRemoteDirChanged( const QString & ) ) );
}

void FtpMainWindow::setupCenterCommandBar()
{
    // Setup the command bar in the middle between the two views

    QVBox *w = new QVBox( splitter );
    splitter->setResizeMode( w, QSplitter::FollowSizeHint );
    w->setSpacing( 5 );
    w->setMargin( 5 );

    QPushButton *bConnect = new QPushButton( tr( "&Connect" ), w );
    (void)new QWidget( w );
    QPushButton *bUpload = new QPushButton( tr( "== &Upload ==>" ), w );
    QPushButton *bDownload = new QPushButton( tr( "<== &Download ==" ), w );
    (void)new QWidget( w );

    connect( bConnect, SIGNAL( clicked() ),
	     this, SLOT( slotConnect() ) );
    connect( bUpload, SIGNAL( clicked() ),
	     this, SLOT( slotUpload() ) );
    connect( bDownload, SIGNAL( clicked() ),
	     this, SLOT( slotDownload() ) );
}

void FtpMainWindow::setup()
{
    // Setup the GUI

    mainWidget = new QVBox( this );
    splitter = new QSplitter( mainWidget );
    setupLeftSide();
    setupCenterCommandBar();
    setupRightSide();

    progressLabel1 = new QLabel( tr( "No Operation in Progress" ), mainWidget );
    progressBar1 = new QProgressBar( mainWidget );
    progressLabel2 = new QLabel( tr( "No Operation in Progress" ), mainWidget );
    progressBar2 = new QProgressBar( mainWidget );

    progressLabel1->hide();
    progressBar1->hide();
    progressLabel2->hide();
    progressBar2->hide();

    setCentralWidget( mainWidget );
}

void FtpMainWindow::slotLocalDirChanged( const QString &path )
{
    // The user changed the path on the left side

    oldLocal = localOperator;
    localOperator.setPath( path );
    localOperator.listChildren();
}

void FtpMainWindow::slotLocalDirChanged( const QUrlInfo &info )
{
    // The user changed the path on the left side

    oldLocal = localOperator;
    localOperator.addPath( info.name() );
    localOperator.listChildren();
    localCombo->insertItem( localOperator.path(), 0 );
    localCombo->setCurrentItem( 0 );
}

void FtpMainWindow::slotRemoteDirChanged( const QString &path )
{
    // The user changed the path on the right side

    if ( !remoteOperator.isValid() )
	return;
    oldRemote = remoteOperator;
    remoteOperator.setPath( path );
    remoteOperator.listChildren();
}

void FtpMainWindow::slotRemoteDirChanged( const QUrlInfo &info )
{
    // The user changed the path on the right side

    oldRemote = remoteOperator;
    remoteOperator.addPath( info.name() );
    remoteOperator.listChildren();
    remotePathCombo->insertItem( remoteOperator.path(), 0 );
    remotePathCombo->setCurrentItem( 0 );
}

void FtpMainWindow::slotConnect()
{
    // The user pressed the connect button, so let's connect to the
    // FTP server
    // First we need to set stuff (host, path, etc.) which the user
    // entered on the right side to the remote QUrlOperator

    // protocol + hostname
    QString s = "ftp://" + remoteHostCombo->currentText();
    oldRemote = remoteOperator;
    remoteOperator = s;

    // path on the server
    if ( !remotePathCombo->currentText().isEmpty() )
	remoteOperator.setPath( remotePathCombo->currentText() );
    else
	remoteOperator.setPath( "/" );

    // if nothing or "ftp" or "anonymous" has been entered into the username combo,
    // let's connect anonymous, else private with password
    if ( !userCombo->currentText().isEmpty() &&
	 userCombo->currentText().lower() != "anonymous" &&
	 userCombo->currentText().lower() != "ftp" ) {
	remoteOperator.setUser( userCombo->currentText() );
	remoteOperator.setPassword( passLined->text() );
    }

    // set the port
    remoteOperator.setPort( portSpin->value() );