[Solved] How to get and change HTML from url before viewing in QWebView?

zither

Dear all friends,

I would like to get and change HTML from internet url before viewing in QWebView.
When I try to load newly change HTML to set in QWebView after loadFinish() signal. It's OK.

But when I try to change contents of Facebook page, & try to insert newly change HTML, it's not work.
When I write out change HTML to a file, It's OK, open that file in browser also OK.

That's why? I would like to know..
So, Is it possible to get HTML, change them & return to QWebView before settings original HTML to QWebView?

Thanks

jim_kaiser

What's the difference from the "previous post":http://developer.qt.nokia.com/forums/viewthread/6742/#39382?

To get html without QWebView. Do this:

[ Edit: NOTE: QHttp is obsolete as pointed out by many others and shouldn't be used. Use the QNetworkManager instead. ]

[Edit2:
@
// constructor
m_networkManager = new QNetworkAccessManager(this);

connect(m_networkManager, SIGNAL(finished(QNetworkReply*)),
this, SLOT(slotReplyFinished(QNetworkReply*)));

//get
m_networkManager->get(QNetworkRequest(QUrl(queryUrlString)));

//slotReplyFinished(QNetworkReply *response)
{
QByteArray result;

if (response->error() == QNetworkReply::NoError)
{
    result = response->readAll();
}
else
    QMessageBox::critical(this, tr("Error"), response->errorString());

}
@
]

Obsolete method using QHttp.
@
// In constructor
m_http_buffer = new QTemporaryFile();
m_http_buffer->setAutoRemove(true);
m_http_client = new QHttp(this);

// Http call
QHttp::ConnectionMode mode = url.scheme().toLower() == "https" ? Http::ConnectionModeHttps : QHttp::ConnectionModeHttp;
m_http_client->setHost(url.host(), mode, url.port() == -1 ? 0 : url.port());
m_http_buffer->open();

httpRequestId = m_http_client->get(url.path(),m_http_buffer);

setCursor(QCursor(Qt::WaitCursor));

connect(m_http_client, SIGNAL(requestFinished(int,bool)),
this, SLOT(slotHttpRequestFinished(int,bool)));

// slotHttpRequestFinished
if (id==httpRequestId)
{
setLocked(false);
setCursor(QCursor(Qt::ArrowCursor));

    if (!error)
    {
        m_http_buffer->seek(0);

        // read response here
        m_http_buffer->readAll());
        
        m_http_buffer->close();

        disconnect(m_http_client, 0, this, 0);
   }
}

@

@
In header:
private slots:
void slotHttpRequestFinished(int id, bool error);

private:
   QHttp   *m_http_client;
   int     httpRequestId;
   QTemporaryFile  *m_http_buffer;

@

zither

Dear friend,

Thanks for your reply

I want to change some data on HTML requested from internet.
It's like Firefox plug-in which change some HTML & is shown in main browser to user.
When I insert just some html text instead of change function, It's also work.

But, my change function is also work, I tested with changed data to output file.
That output file can be opened & show correctly in FF for my changes.

I don't understand why my browser can't show these changes. It's just some Unicode character corrections. I recompile Qt lib for these unicode support.

Thanks

jim_kaiser

Okay :) If solved.. could mark as solved in title?

kkrzewniak

NOTE: Do not use QHttp this class is deprecated! Use QNetworkAccessManager instead!!