khtml_part.cpp

khtml在gtk上的移植版本

      if ( !_frame )
      {
        emit d->m_extension->openURLRequest( url, args );
        return;
      }

      child = _frame;
    }
  }

  // TODO: handle child target correctly! currently the script are always executed fur the parent
  if ( url.find( QString::fromLatin1( "javascript:" ), 0, false ) == 0 ) {
      executeScript( KURL::decode_string( url.right( url.length() - 11) ) );
      return;
  }

  if ( child ) {
      requestObject( child, KURL(url), args );
  }  else if ( frameName==QString::fromLatin1("_self") ) // this is for embedded objects (via <object>) which want to replace the current document
  {
      KParts::URLArgs newArgs( args );
      newArgs.frameName = QString::null;
      emit d->m_extension->openURLRequest( KURL(url), newArgs );
  }
}

#endif // APPLE_CHANGES

void KHTMLPart::slotDebugDOMTree()
{
  if ( d->m_doc && d->m_doc->firstChild() )
    qDebug("%s", d->m_doc->firstChild()->toHTML().latin1());
}

void KHTMLPart::slotDebugRenderTree()
{
#ifndef NDEBUG
  if ( d->m_doc )
    d->m_doc->renderer()->printTree();
#endif
}

void KHTMLPart::setAutoloadImages( bool enable )
{
  if ( d->m_doc && d->m_doc->docLoader()->autoloadImages() == enable )
    return;

  if ( d->m_doc )
    d->m_doc->docLoader()->setAutoloadImages( enable );

#if !APPLE_CHANGES
  unplugActionList( "loadImages" );

  if ( enable ) {
    delete d->m_paLoadImages;
    d->m_paLoadImages = 0;
  }
  else if ( !d->m_paLoadImages )
    d->m_paLoadImages = new KAction( i18n( "Display Images on Page" ), "images_display", 0, this, SLOT( slotLoadImages() ), actionCollection(), "loadImages" );

  if ( d->m_paLoadImages ) {
    QPtrList<KAction> lst;
    lst.append( d->m_paLoadImages );
    plugActionList( "loadImages", lst );
  }
#endif
}

bool KHTMLPart::autoloadImages() const
{
  if ( d->m_doc )
    return d->m_doc->docLoader()->autoloadImages();

  return true;
}

void KHTMLPart::clear()
{
  if ( d->m_bCleared )
    return;
  d->m_bCleared = true;

  d->m_bClearing = true;

#if !APPLE_CHANGES
  {
    ConstFrameIt it = d->m_frames.begin();
    ConstFrameIt end = d->m_frames.end();
    for(; it != end; ++it )
    {
      // Stop HTMLRun jobs for frames
      if ( (*it).m_run )
        (*it).m_run->abort();
    }
  }

  {
    QValueList<khtml::ChildFrame>::ConstIterator it = d->m_objects.begin();
    QValueList<khtml::ChildFrame>::ConstIterator end = d->m_objects.end();
    for(; it != end; ++it )
    {
      // Stop HTMLRun jobs for objects
      if ( (*it).m_run )
        (*it).m_run->abort();
    }
  }


  findTextBegin(); // resets d->m_findNode and d->m_findPos
#endif

  d->m_mousePressNode = DOM::Node();


  if ( d->m_doc )
    d->m_doc->detach();

  // Moving past doc so that onUnload works.
  if ( d->m_jscript )
    d->m_jscript->clear();

  if ( d->m_view )
    d->m_view->clear();

  // do not dereference the document before the jscript and view are cleared, as some destructors
  // might still try to access the document.
  if ( d->m_doc )
    d->m_doc->deref();
  d->m_doc = 0;

  if (d->m_decoder)
    d->m_decoder->deref();
  d->m_decoder = 0;

  {
    ConstFrameIt it = d->m_frames.begin();
    ConstFrameIt end = d->m_frames.end();
    for(; it != end; ++it )
    {
      if ( (*it).m_part )
      {
#if !APPLE_CHANGES
        partManager()->removePart( (*it).m_part );
#endif
        (*it).m_part->deref();
      }
    }
  }
  d->m_frames.clear();

  {
    ConstFrameIt it = d->m_objects.begin();
    ConstFrameIt end = d->m_objects.end();
    for(; it != end; ++it )
    {
      if ( (*it).m_part )
      {
#if !APPLE_CHANGES
        partManager()->removePart( (*it).m_part );
#endif
        (*it).m_part->deref();
      }
    }
  }
  d->m_objects.clear();

#ifndef Q_WS_QWS
  delete d->m_javaContext;
  d->m_javaContext = 0;
#endif

  d->m_scheduledRedirection = noRedirectionScheduled;
  d->m_delayRedirect = 0;
  d->m_redirectURL = QString::null;
  d->m_redirectLockHistory = true;
  d->m_redirectUserGesture = false;
  d->m_bHTTPRefresh = false;
  d->m_bClearing = false;
  d->m_frameNameId = 1;
  d->m_bFirstData = true;

  d->m_bMousePressed = false;

#ifndef QT_NO_CLIPBOARD
  connect( kapp->clipboard(), SIGNAL( selectionChanged()), SLOT( slotClearSelection()));
#endif

#if !APPLE_CHANGES
  d->m_totalObjectCount = 0;
  d->m_loadedObjects = 0;
  d->m_jobPercent = 0;
#endif

  if ( !d->m_haveEncoding )
    d->m_encoding = QString::null;
#ifdef SPEED_DEBUG
  d->m_parsetime.restart();
#endif
}

bool KHTMLPart::openFile()
{
  return true;
}

DOM::HTMLDocumentImpl *KHTMLPart::docImpl() const
{
    if ( d && d->m_doc && d->m_doc->isHTMLDocument() )
        return static_cast<HTMLDocumentImpl*>(d->m_doc);
    return 0;
}

DOM::DocumentImpl *KHTMLPart::xmlDocImpl() const
{
    if ( d )
        return d->m_doc;
    return 0;
}

/*bool KHTMLPart::isSSLInUse() const
{
  return d->m_ssl_in_use;
}*/

void KHTMLPart::receivedFirstData()
{
    // Leave indented one extra for easier merging.
    
      //kdDebug( 6050 ) << "begin!" << endl;

    begin( d->m_workingURL, d->m_extension->urlArgs().xOffset, d->m_extension->urlArgs().yOffset );


    d->m_doc->docLoader()->setCachePolicy(d->m_cachePolicy);
    d->m_workingURL = KURL();

    d->m_cacheId = KHTMLPageCache::self()->createCacheEntry();

    // When the first data arrives, the metadata has just been made available
#if APPLE_CHANGES
    QString qData;
#else
    d->m_bSecurityInQuestion = false;
    d->m_ssl_in_use = (d->m_job->queryMetaData("ssl_in_use") == "TRUE");
    kdDebug(6050) << "SSL in use? " << d->m_job->queryMetaData("ssl_in_use") << endl;

    {
    KHTMLPart *p = parentPart();
    if (p && p->d->m_ssl_in_use != d->m_ssl_in_use) {
	while (p->parentPart()) p = p->parentPart();

	p->d->m_paSecurity->setIcon( "halfencrypted" );
        p->d->m_bSecurityInQuestion = true;
	kdDebug(6050) << "parent setIcon half done." << endl;
    }
    }

    d->m_paSecurity->setIcon( d->m_ssl_in_use ? "encrypted" : "decrypted" );
    kdDebug(6050) << "setIcon " << ( d->m_ssl_in_use ? "encrypted" : "decrypted" ) << " done." << endl;

    // Shouldn't all of this be done only if ssl_in_use == true ? (DF)

    d->m_ssl_peer_certificate = d->m_job->queryMetaData("ssl_peer_certificate");
    d->m_ssl_peer_chain = d->m_job->queryMetaData("ssl_peer_chain");
    d->m_ssl_peer_ip = d->m_job->queryMetaData("ssl_peer_ip");
    d->m_ssl_cipher = d->m_job->queryMetaData("ssl_cipher");
    d->m_ssl_cipher_desc = d->m_job->queryMetaData("ssl_cipher_desc");
    d->m_ssl_cipher_version = d->m_job->queryMetaData("ssl_cipher_version");
    d->m_ssl_cipher_used_bits = d->m_job->queryMetaData("ssl_cipher_used_bits");
    d->m_ssl_cipher_bits = d->m_job->queryMetaData("ssl_cipher_bits");
    d->m_ssl_cert_state = d->m_job->queryMetaData("ssl_cert_state");

    // Check for charset meta-data
    QString qData = d->m_job->queryMetaData("charset");
    if ( !qData.isEmpty() && !d->m_haveEncoding ) // only use information if the user didn't override the settings
       d->m_encoding = qData;
#endif // APPLE_CHANGES

    // Support for http-refresh
    qData = d->m_job->queryMetaData("http-refresh");
    if( !qData.isEmpty() && d->m_metaRefreshEnabled )
    {
      kdDebug(6050) << "HTTP Refresh Request: " << qData << endl;
      double delay;
      int pos = qData.find( ';' );
      if ( pos == -1 )
        pos = qData.find( ',' );

      if( pos == -1 )
      {
        delay = qData.stripWhiteSpace().toDouble();
#if APPLE_CHANGES
        // We want a new history item if the refresh timeout > 1 second
        scheduleRedirection( delay, m_url.url(), delay <= 1);
#else
        scheduleRedirection( delay, m_url.url());
#endif
      }
      else
      {
        int end_pos = qData.length();
        delay = qData.left(pos).stripWhiteSpace().toDouble();
        while ( qData[++pos] == ' ' );
        if ( qData.find( "url", pos, false ) == pos )
        {
          pos += 3;
          while (qData[pos] == ' ' || qData[pos] == '=' )
              pos++;
          if ( qData[pos] == '"' )
          {
              pos++;
              int index = end_pos-1;
              while( index > pos )
              {
                if ( qData[index] == '"' )
                    break;
                index--;
              }
              if ( index > pos )
                end_pos = index;
          }
        }
#if APPLE_CHANGES
        // We want a new history item if the refresh timeout > 1 second
        scheduleRedirection( delay, d->m_doc->completeURL( qData.mid( pos, end_pos ) ), delay <= 1);
#else
        scheduleRedirection( delay, d->m_doc->completeURL( qData.mid( pos, end_pos ) ));
#endif
      }
      d->m_bHTTPRefresh = true;
    }

    // Support for http last-modified
    d->m_lastModified = d->m_job->queryMetaData("modified");
    //kdDebug() << "KHTMLPart::slotData metadata modified: " << d->m_lastModified << endl;
}

#if !APPLE_CHANGES

void KHTMLPart::slotData( KIO::Job* kio_job, const QByteArray &data )
{
  assert ( d->m_job == kio_job );

  //kdDebug( 6050 ) << "slotData: " << data.size() << endl;
  // The first data ?
  if ( !d->m_workingURL.isEmpty() )
    receivedFirstData( );

  KHTMLPageCache::self()->addData(d->m_cacheId, data);
  write( data.data(), data.size() );
}

void KHTMLPart::slotRestoreData(const QByteArray &data )
{
  // The first data ?
  if ( !d->m_workingURL.isEmpty() )
  {
     long saveCacheId = d->m_cacheId;
     begin( d->m_workingURL, d->m_extension->urlArgs().xOffset, d->m_extension->urlArgs().yOffset );
     d->m_cacheId = saveCacheId;
     d->m_workingURL = KURL();
  }

  //kdDebug( 6050 ) << "slotRestoreData: " << data.size() << endl;
  write( data.data(), data.size() );

  if (data.size() == 0)
  {
      //kdDebug( 6050 ) << "slotRestoreData: <<end of data>>" << endl;
     // End of data.
    if (d->m_doc && d->m_doc->parsing())
        end(); //will emit completed()
  }
}

void KHTMLPart::showError( KIO::Job* job )
{
  kdDebug() << "KHTMLPart::showError d->m_bParsing=" << (d->m_doc && d->m_doc->parsing()) << " d->m_bComplete=" << d->m_bComplete
            << " d->m_bCleared=" << d->m_bCleared << endl;

  if (job->error() == KIO::ERR_NO_CONTENT)
	return;

  if ( (d->m_doc && d->m_doc->parsing()) || d->m_workingURL.isEmpty() ) // if we got any data already
    job->showErrorDialog( /*d->m_view*/ );
  else
  {
    htmlError( job->error(), job->errorText(), d->m_workingURL );
  }
}

// This is a protected method, placed here because of it's relevance to showError
void KHTMLPart::htmlError( int errorCode, const QString& text, const KURL& reqUrl )
{
  kdDebug(6050) << "KHTMLPart::htmlError errorCode=" << errorCode << " text=" << text << endl;
  // make sure we're not executing any embedded JS
  bool bJSFO = d->m_bJScriptForce;
  bool bJSOO = d->m_bJScriptOverride;
  d->m_bJScriptForce = false;
  d->m_bJScriptOverride = true;
  begin();
  QString errText = QString::fromLatin1( "<HTML><HEAD><TITLE>" );
  errText += i18n( "Error while loading %1" ).arg( reqUrl.htmlURL() );
  errText += QString::fromLatin1( "</TITLE></HEAD><BODY><P>" );
  errText += i18n( "An error occured while loading <B>%1</B>:" ).arg( reqUrl.htmlURL() );
  errText += QString::fromLatin1( "</P><P>" );
  QString kioErrString = KIO::buildErrorString( errorCode, text );

  kioErrString.replace(QRegExp("&"), QString("&amp;"));
  kioErrString.replace(QRegExp("<"), QString("&lt;"));
  kioErrString.replace(QRegExp(">"), QString("&gt;"));

  // In case the error string has '\n' in it, replace with <BR/>
  kioErrString.replace( QRegExp("\n"), "<BR/>" );

  errText += kioErrString;
  errText += QString::fromLatin1( "</P></BODY></HTML>" );
  write(errText);
  end();

  d->m_bJScriptForce = bJSFO;
  d->m_bJScriptOverride = bJSOO;

  // make the working url the current url, so that reload works and
  // emit the progress signals to advance one step in the history
  // (so that 'back' works)
  m_url = reqUrl; // same as d->m_workingURL
  d->m_workingURL = KURL();
  emit started( 0 );
  emit completed();
  return;
  // following disabled until 3.1

  QString errorName, techName, description;
  QStringList causes, solutions;

  QByteArray raw = KIO::rawErrorDetail( errorCode, text, &reqUrl );
  QDataStream stream(raw, IO_ReadOnly);

  stream >> errorName >> techName >> description >> causes >> solutions;