ftpclient-example.html

来自「QT 下载资料仅供参考」· HTML 代码 · 共 937 行 · 第 1/3 页

    progressLabel1 = new <a href="qlabel.html">QLabel</a>( <a href="qobject.html#tr">tr</a>( "No Operation in Progress" ), mainWidget );
    progressBar1 = new <a href="qprogressbar.html">QProgressBar</a>( mainWidget );
    progressLabel2 = new <a href="qlabel.html">QLabel</a>( <a href="qobject.html#tr">tr</a>( "No Operation in Progress" ), mainWidget );
    progressBar2 = new <a href="qprogressbar.html">QProgressBar</a>( mainWidget );

<a name="x684"></a>    progressLabel1-&gt;<a href="qwidget.html#hide">hide</a>();
    progressBar1-&gt;<a href="qwidget.html#hide">hide</a>();
    progressLabel2-&gt;<a href="qwidget.html#hide">hide</a>();
    progressBar2-&gt;<a href="qwidget.html#hide">hide</a>();

    <a href="qmainwindow.html#setCentralWidget">setCentralWidget</a>( mainWidget );
}

void <a name="f267"></a>FtpMainWindow::slotLocalDirChanged( const <a href="qstring.html">QString</a> &amp;path )
{
    // The user changed the path on the left side

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

void FtpMainWindow::slotLocalDirChanged( const <a href="qurlinfo.html">QUrlInfo</a> &amp;info )
{
    // The user changed the path on the left side

    oldLocal = localOperator;
<a name="x680"></a>    localOperator.addPath( info.<a href="qurlinfo.html#name">name</a>() );
    localOperator.listChildren();
    localCombo-&gt;<a href="qcombobox.html#insertItem">insertItem</a>( localOperator.path(), 0 );
<a name="x653"></a>    localCombo-&gt;<a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( 0 );
}

void <a name="f268"></a>FtpMainWindow::slotRemoteDirChanged( const <a href="qstring.html">QString</a> &amp;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 <a href="qurlinfo.html">QUrlInfo</a> &amp;info )
{
    // The user changed the path on the right side

    oldRemote = remoteOperator;
    remoteOperator.addPath( info.<a href="qurlinfo.html#name">name</a>() );
    remoteOperator.listChildren();
    remotePathCombo-&gt;<a href="qcombobox.html#insertItem">insertItem</a>( remoteOperator.path(), 0 );
    remotePathCombo-&gt;<a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( 0 );
}

void <a name="f269"></a>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
<a name="x651"></a>    <a href="qstring.html">QString</a> s = "ftp://" + remoteHostCombo-&gt;<a href="qcombobox.html#currentText">currentText</a>();
    oldRemote = remoteOperator;
    remoteOperator = s;

    // path on the server
    if ( !remotePathCombo-&gt;<a href="qcombobox.html#currentText">currentText</a>().isEmpty() )
        remoteOperator.setPath( remotePathCombo-&gt;<a href="qcombobox.html#currentText">currentText</a>() );
    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-&gt;<a href="qcombobox.html#currentText">currentText</a>().isEmpty() &amp;&amp;
         userCombo-&gt;<a href="qcombobox.html#currentText">currentText</a>().lower() != "anonymous" &amp;&amp;
         userCombo-&gt;<a href="qcombobox.html#currentText">currentText</a>().lower() != "ftp" ) {
        remoteOperator.setUser( userCombo-&gt;<a href="qcombobox.html#currentText">currentText</a>() );
<a name="x662"></a>        remoteOperator.setPassword( passLined-&gt;<a href="qlineedit.html#text">text</a>() );
    }

    // set the port
    remoteOperator.setPort( portSpin-&gt;<a href="qspinbox.html#value">value</a>() );

    // finally read the directory on the ftp server
    remoteOperator.listChildren();
}

void <a name="f270"></a>FtpMainWindow::slotUpload()
{
    // the user pressed the upload button

    // if files have been selected on the left side (local filesystem)
    <a href="qvaluelist.html">QValueList</a>&lt;QUrlInfo&gt; files = leftView-&gt;selectedItems();
<a name="x683"></a>    if ( files.<a href="qvaluelist.html#isEmpty">isEmpty</a>() )
        return;

    // create a list of the URLs which should be copied
    <a href="qstringlist.html">QStringList</a> lst;
    QValueList&lt;QUrlInfo&gt;::Iterator it = files.<a href="qvaluelist.html#begin">begin</a>();
    for ( ; it != files.<a href="qvaluelist.html#end">end</a>(); ++it )
        lst &lt;&lt; QUrl( localOperator, ( *it ).name() );

    // copy the list of selected files to the directory in which the
    // remoteOperator currently is (upload)
    remoteOperator.copy( lst, remoteOperator, FALSE );
}

void <a name="f271"></a>FtpMainWindow::slotDownload()
{
    // if the user pressed the download button

    // if files have been selected on the right side (remote filesystem)
    <a href="qvaluelist.html">QValueList</a>&lt;QUrlInfo&gt; files = rightView-&gt;selectedItems();
    if ( files.<a href="qvaluelist.html#isEmpty">isEmpty</a>() )
        return;

    // create a list of the URLs which should be downloaded
    <a href="qstringlist.html">QStringList</a> lst;
    QValueList&lt;QUrlInfo&gt;::Iterator it = files.<a href="qvaluelist.html#begin">begin</a>();
    for ( ; it != files.<a href="qvaluelist.html#end">end</a>(); ++it )
        lst &lt;&lt; QUrl( remoteOperator, ( *it ).name() );

    // copy the list of selected files to the directory in which the
    // localOperator currently is (download)
    localOperator.copy( lst, localOperator, FALSE );
}

void <a name="f272"></a>FtpMainWindow::slotLocalStart( <a href="qnetworkoperation.html">QNetworkOperation</a> *op )
{
    // this slot is always called if the local QUrlOperator starts
    // listing a directory or dowloading a file

    if ( !op )
        return;

<a name="x667"></a>    if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpListChildren ) {
        // start listing a dir? clear the left view!
<a name="x663"></a>        leftView-&gt;<a href="qlistview.html#clear">clear</a>();
    } else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpGet ) {
        // start downloading a file? reset the progress bar!
<a name="x672"></a>        progressBar1-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( 0 );
<a name="x670"></a>        progressBar1-&gt;<a href="qprogressbar.html#reset">reset</a>();
    }
}

void <a name="f273"></a>FtpMainWindow::slotLocalFinished( <a href="qnetworkoperation.html">QNetworkOperation</a> *op )
{
    // this slot is always called if the local QUrlOperator finished
    // an operation

    if ( !op )
        return;

<a name="x669"></a>    if ( op &amp;&amp; op-&gt;<a href="qnetworkoperation.html#state">state</a>() == QNetworkProtocol::StFailed ) {
        // an error happend, let the user know that
<a name="x668"></a><a name="x664"></a>        QMessageBox::<a href="qmessagebox.html#critical">critical</a>( this, tr( "ERROR" ), op-&gt;<a href="qnetworkoperation.html#protocolDetail">protocolDetail</a>() );

        // do something depending in the error code
<a name="x666"></a>        int ecode = op-&gt;<a href="qnetworkoperation.html#errorCode">errorCode</a>();
        if ( ecode == QNetworkProtocol::ErrListChildren || ecode == QNetworkProtocol::ErrParse ||
             ecode == QNetworkProtocol::ErrUnknownProtocol || ecode == QNetworkProtocol::ErrLoginIncorrect ||
             ecode == QNetworkProtocol::ErrValid || ecode == QNetworkProtocol::ErrHostNotFound ||
             ecode == QNetworkProtocol::ErrFileNotExisting ) {
            localOperator = oldLocal;
<a name="x654"></a>            localCombo-&gt;<a href="qcombobox.html#setEditText">setEditText</a>( localOperator.path() );
            localOperator.listChildren();
        }
    } else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpPut ) {
        // finished saving the downloaded file? reread the dir and hide the progress bar
        localOperator.listChildren();
        progressLabel1-&gt;<a href="qwidget.html#hide">hide</a>();
        progressBar1-&gt;<a href="qwidget.html#hide">hide</a>();
    } else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpGet ) {
        // finished reading a file from the ftp server? reset the progress bar
        progressBar1-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( 0 );
        progressBar1-&gt;<a href="qprogressbar.html#reset">reset</a>();
    }

}

void <a name="f274"></a>FtpMainWindow::slotRemoteStart( <a href="qnetworkoperation.html">QNetworkOperation</a> *op )
{
    // this slot is always called if the remote QUrlOperator starts
    // listing a directory or uploading a file

    if ( !op )
        return;

    if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpListChildren ) {
        // start listing a dir? clear the right view!
        rightView-&gt;<a href="qlistview.html#clear">clear</a>();
    } else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpGet ) {
        // start downloading a file? reset the progress bar!
        progressBar2-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( 0 );
        progressBar2-&gt;<a href="qprogressbar.html#reset">reset</a>();
    }
}

void <a name="f275"></a>FtpMainWindow::slotRemoteFinished( <a href="qnetworkoperation.html">QNetworkOperation</a> *op )
{
    // this slot is always called if the remote QUrlOperator finished
    // an operation

    if ( !op )
        return;

    if ( op &amp;&amp; op-&gt;<a href="qnetworkoperation.html#state">state</a>() == QNetworkProtocol::StFailed ) {
        // an error happend, let the user know that
        QMessageBox::<a href="qmessagebox.html#critical">critical</a>( this, tr( "ERROR" ), op-&gt;<a href="qnetworkoperation.html#protocolDetail">protocolDetail</a>() );

        // do something depending in the error code
        int ecode = op-&gt;<a href="qnetworkoperation.html#errorCode">errorCode</a>();
        if ( ecode == QNetworkProtocol::ErrListChildren || ecode == QNetworkProtocol::ErrParse ||
             ecode == QNetworkProtocol::ErrUnknownProtocol || ecode == QNetworkProtocol::ErrLoginIncorrect ||
             ecode == QNetworkProtocol::ErrValid || ecode == QNetworkProtocol::ErrHostNotFound ||
             ecode == QNetworkProtocol::ErrFileNotExisting ) {
            remoteOperator = oldRemote;
            remoteHostCombo-&gt;<a href="qcombobox.html#setEditText">setEditText</a>( remoteOperator.host() );
            remotePathCombo-&gt;<a href="qcombobox.html#setEditText">setEditText</a>( remoteOperator.path() );
<a name="x661"></a>            passLined-&gt;<a href="qlineedit.html#setText">setText</a>( remoteOperator.password() );
            userCombo-&gt;<a href="qcombobox.html#setEditText">setEditText</a>( remoteOperator.user() );
            portSpin-&gt;<a href="qspinbox.html#setValue">setValue</a>( remoteOperator.port() );
            remoteOperator.listChildren();
        }
    } else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpListChildren ) {
        // finished reading a dir? set the correct path to the pth combo of the right view
        remotePathCombo-&gt;<a href="qcombobox.html#setEditText">setEditText</a>( remoteOperator.path() );
    } else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpPut ) {
        // finished saving the uploaded file? reread the dir and hide the progress bar
        remoteOperator.listChildren();
        progressLabel2-&gt;<a href="qwidget.html#hide">hide</a>();
        progressBar2-&gt;<a href="qwidget.html#hide">hide</a>();
    } else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpGet ) {
        // finished reading a file from the local filesystem? reset the progress bar
        progressBar2-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( 0 );
        progressBar2-&gt;<a href="qprogressbar.html#reset">reset</a>();
    }
}

void <a name="f276"></a>FtpMainWindow::slotLocalDataTransferProgress( int bytesDone, int bytesTotal,
                                                   <a href="qnetworkoperation.html">QNetworkOperation</a> *op )
{
    // Show the progress here of the local QUrlOperator reads or writes data

    if ( !op )
        return;

<a name="x685"></a>    if ( !progressBar1-&gt;<a href="qwidget.html#isVisible">isVisible</a>() ) {
        if ( bytesDone &lt; bytesTotal) {
            progressLabel1-&gt;<a href="qwidget.html#show">show</a>();
<a name="x673"></a>            progressBar1-&gt;<a href="qwidget.html#show">show</a>();
            progressBar1-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( bytesTotal );
<a name="x671"></a>            progressBar1-&gt;<a href="qprogressbar.html#setProgress">setProgress</a>( 0 );
            progressBar1-&gt;<a href="qprogressbar.html#reset">reset</a>();
        } else
            return;
    }

<a name="x674"></a>    if ( progressBar1-&gt;<a href="qprogressbar.html#totalSteps">totalSteps</a>() == bytesTotal )
        progressBar1-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( bytesTotal );

    if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpGet )
<a name="x665"></a><a name="x658"></a>        progressLabel1-&gt;<a href="qlabel.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>( "Read: %1" ).arg( op-&gt;<a href="qnetworkoperation.html#arg">arg</a>( 0 ) ) );
    else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpPut )
        progressLabel1-&gt;<a href="qlabel.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>( "Write: %1" ).arg( op-&gt;<a href="qnetworkoperation.html#arg">arg</a>( 0 ) ) );
    else
        return;

    progressBar1-&gt;<a href="qprogressbar.html#setProgress">setProgress</a>( bytesDone );
}

void <a name="f277"></a>FtpMainWindow::slotRemoteDataTransferProgress( int bytesDone, int bytesTotal,
                                                    <a href="qnetworkoperation.html">QNetworkOperation</a> *op )
{
    // Show the progress here of the remote QUrlOperator reads or writes data

    if ( !op )
        return;

    if ( !progressBar2-&gt;<a href="qwidget.html#isVisible">isVisible</a>() ) {
        if ( bytesDone &lt; bytesTotal) {
            progressLabel2-&gt;<a href="qwidget.html#show">show</a>();
            progressBar2-&gt;<a href="qwidget.html#show">show</a>();
            progressBar2-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( bytesTotal );
            progressBar2-&gt;<a href="qprogressbar.html#setProgress">setProgress</a>( 0 );
            progressBar2-&gt;<a href="qprogressbar.html#reset">reset</a>();
        } else
            return;
    }

    if ( progressBar2-&gt;<a href="qprogressbar.html#totalSteps">totalSteps</a>() != bytesTotal )
        progressBar2-&gt;<a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( bytesTotal );

    if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpGet )
        progressLabel2-&gt;<a href="qlabel.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>( "Read: %1" ).arg( op-&gt;<a href="qnetworkoperation.html#arg">arg</a>( 0 ) ) );
    else if ( op-&gt;<a href="qnetworkoperation.html#operation">operation</a>() == QNetworkProtocol::OpPut )
        progressLabel2-&gt;<a href="qlabel.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>( "Write: %1" ).arg( op-&gt;<a href="qnetworkoperation.html#arg">arg</a>( 0 ) ) );
    else
        return;

    progressBar2-&gt;<a href="qprogressbar.html#setProgress">setProgress</a>( bytesDone );
}

void <a name="f278"></a>FtpMainWindow::slotLocalMkDir()
{
    // create a dir on the local filesystem

    bool ok = FALSE;
<a name="x657"></a>    <a href="qstring.html">QString</a> name = QInputDialog::<a href="qinputdialog.html#getText">getText</a>( <a href="qobject.html#tr">tr</a>( "Directory Name:" ), <a href="qstring.html#QString-null">QString::null</a>, QLineEdit::Normal, QString::null, &amp;ok, this );