render_frames.cpp

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

  setNeedsLayoutAndMinMaxRecalc();

  if (element()->id() == ID_IFRAME) {

      HTMLIFrameElementImpl *o = static_cast<HTMLIFrameElementImpl *>(element());
      url = o->url.string();
      if (!o->getDocument()->isURLAllowed(url)) return;
      part->requestFrame( this, url, o->name.string(), QStringList(), true );
  // ### this should be constant true - move iframe to somewhere else
  } else {

      QStringList params;
      HTMLObjectBaseElementImpl * objbase = static_cast<HTMLObjectBaseElementImpl *>(element());
      url = objbase->url;

      for (NodeImpl* child = element()->firstChild(); child; child=child->nextSibling()) {
          if ( child->id() == ID_PARAM ) {
              HTMLParamElementImpl *p = static_cast<HTMLParamElementImpl *>( child );

              QString aStr = p->name();
              aStr += QString::fromLatin1("=\"");
              aStr += p->value();
              aStr += QString::fromLatin1("\"");
              QString name_lower = p->name().lower();
              if (name_lower == QString::fromLatin1("type") && objbase->id() != ID_APPLET) {
                  objbase->setServiceType(p->value());
              } else if (url.isEmpty() &&
                         (name_lower == QString::fromLatin1("src") ||
                          name_lower == QString::fromLatin1("movie") ||
                          name_lower == QString::fromLatin1("code"))) {
                  url = p->value();
              }
              params.append(aStr);
          }
      }
      if (element()->id() != ID_OBJECT) {
          // add all attributes set on the embed object
          NamedAttrMapImpl* a = objbase->attributes();
          if (a) {
              for (unsigned long i = 0; i < a->length(); ++i) {
                  NodeImpl::Id id = a->idAt(i);
                  DOMString value = a->valueAt(i);
              params.append(objbase->getDocument()->getName(NodeImpl::AttributeId, id).string() + "=\"" + value.string() + "\"");
              }
          }
      }
      params.append( QString::fromLatin1("__KHTML__PLUGINEMBED=\"YES\"") );
      params.append( QString::fromLatin1("__KHTML__PLUGINBASEURL=\"%1\"").arg(element()->getDocument()->baseURL().url()));

      HTMLEmbedElementImpl *embed = 0;
      QString serviceType = objbase->serviceType;
      if ( element()->id() == ID_EMBED ) {

          embed = static_cast<HTMLEmbedElementImpl *>( objbase );

      }
      else { // if(element()->id() == ID_OBJECT || element()->id() == ID_APPLET)

          // check for embed child object
          for (NodeImpl *child = objbase->firstChild(); child; child = child->nextSibling())
              if ( child->id() == ID_EMBED ) {
                  embed = static_cast<HTMLEmbedElementImpl *>( child );
                  break;
              }

          params.append( QString::fromLatin1("__KHTML__CLASSID=\"%1\"").arg( objbase->classId ) );
          params.append( QString::fromLatin1("__KHTML__CODEBASE=\"%1\"").arg( objbase->getAttribute(ATTR_CODEBASE).string() ) );
          if (!objbase->getAttribute(ATTR_WIDTH).isEmpty())
              params.append( QString::fromLatin1("WIDTH=\"%1\"").arg( objbase->getAttribute(ATTR_WIDTH).string() ) );
          else if (embed && !embed->getAttribute(ATTR_WIDTH).isEmpty()) {
              params.append( QString::fromLatin1("WIDTH=\"%1\"").arg( embed->getAttribute(ATTR_WIDTH).string() ) );
              objbase->setAttribute(ATTR_WIDTH, embed->getAttribute(ATTR_WIDTH));
          }
          if (!objbase->getAttribute(ATTR_HEIGHT).isEmpty())
              params.append( QString::fromLatin1("HEIGHT=\"%1\"").arg( objbase->getAttribute(ATTR_HEIGHT).string() ) );
          else if (embed && !embed->getAttribute(ATTR_HEIGHT).isEmpty()) {
              params.append( QString::fromLatin1("HEIGHT=\"%1\"").arg( embed->getAttribute(ATTR_HEIGHT).string() ) );
              objbase->setAttribute(ATTR_HEIGHT, embed->getAttribute(ATTR_HEIGHT));
          }

          if ( embed ) {
              // render embed object
              url = embed->url;
              if (!embed->serviceType.isEmpty())
                  serviceType = embed->serviceType;
          } else if (url.isEmpty() && objbase->classId.startsWith("java:")) {
              serviceType = "application/x-java-applet";
              url = objbase->classId.mid(5);
          }
          if(serviceType.isEmpty() && !objbase->classId.isEmpty()) {

#if 0
              // We have a clsid, means this is activex (Niko)
              serviceType = "application/x-activex-handler";
#endif

              if(objbase->classId.find(QString::fromLatin1("D27CDB6E-AE6D-11cf-96B8-444553540000")) >= 0) {
                  // It is ActiveX, but the nsplugin system handling
                  // should also work, that's why we don't override the
                  // serviceType with application/x-activex-handler
                  // but let the KTrader in khtmlpart::createPart() detect
                  // the user's preference: launch with activex viewer or
                  // with nspluginviewer (Niko)
                  serviceType = "application/x-shockwave-flash";
              }
              else if(objbase->classId.find(QString::fromLatin1("CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA")) >= 0)
                  serviceType = "audio/x-pn-realaudio-plugin";
              else if(objbase->classId.find(QString::fromLatin1("8AD9C840-044E-11D1-B3E9-00805F499D93")) >= 0 ||
                      objbase->classId.find(QString::fromLatin1("CAFEEFAC-0014-0000-0000-ABCDEFFEDCBA")) >= 0)
                  serviceType = "application/x-java-applet";
              // http://www.apple.com/quicktime/tools_tips/tutorials/activex.html
              else if(objbase->classId.find(QString::fromLatin1("02BF25D5-8C17-4B23-BC80-D3488ABDDC6B")) >= 0)
                  serviceType = "video/quicktime";
              // http://msdn.microsoft.com/library/en-us/dnwmt/html/adding_windows_media_to_web_pages__etse.asp?frame=true
              else if(objbase->classId.find(QString::fromLatin1("6BF52A52-394A-11d3-B153-00C04F79FAA6")) >= 0 ||
                      objbase->classId.find(QString::fromLatin1("22D6f312-B0F6-11D0-94AB-0080C74C7E95")) >= 0)
                  serviceType = "video/x-msvideo";

              else
                  kdDebug(6031) << "ActiveX classId " << objbase->classId << endl;

              // TODO: add more plugins here
          }
      }
      if ((url.isEmpty() && !embed) || !document()->isURLAllowed(url) || !part->requestObject( this, url, serviceType, params ))
          objbase->renderAlternative();
  }
}

// ugly..
void RenderPartObject::close()
{
    RenderPart::close();

    if ( element()->id() != ID_IFRAME )
        updateWidget();
    // deleted here
}


bool RenderPartObject::partLoadingErrorNotify( khtml::ChildFrame *childFrame, const KURL& url, const QString& serviceType )
{
    KHTMLPart *part = static_cast<KHTMLView *>(m_view)->part();
    kdDebug(6031) << "RenderPartObject::partLoadingErrorNotify serviceType=" << serviceType << endl;
    // Check if we just tried with e.g. nsplugin
    // and fallback to the activexhandler if there is a classid
    // and a codebase, where we may download the ocx if it's missing
    if( serviceType != "application/x-activex-handler" && element()->id()==ID_OBJECT ) {

        // check for embed child object
        HTMLObjectElementImpl *o = static_cast<HTMLObjectElementImpl *>(element());
        HTMLEmbedElementImpl *embed = 0;
        NodeImpl *child = o->firstChild();
        while ( child ) {
            if ( child->id() == ID_EMBED )
                embed = static_cast<HTMLEmbedElementImpl *>( child );

            child = child->nextSibling();
        }
        if( embed && !o->classId.isEmpty() &&
            !( static_cast<ElementImpl *>(o)->getAttribute(ATTR_CODEBASE).string() ).isEmpty() )
        {
            KParts::URLArgs args;
            args.serviceType = "application/x-activex-handler";
            kdDebug(6031) << "set to activex" << endl;
            if (part->requestObject( childFrame, url, args ))
                return true; // success

            return false;
        }
    }
    // Dissociate ourselves from the current event loop (to prevent crashes
    // due to the message box staying up)
    QTimer::singleShot( 0, this, SLOT( slotPartLoadingErrorNotify() ) );
#if 0
    Tokenizer *tokenizer = static_cast<DOM::DocumentImpl *>(part->document().handle())->tokenizer();
    if (tokenizer) tokenizer->setOnHold( true );
    slotPartLoadingErrorNotify();
    if (tokenizer) tokenizer->setOnHold( false );
#endif
    return false;
}

void RenderPartObject::slotPartLoadingErrorNotify()
{
    // First we need to find out the servicetype - again - this code is too duplicated !
    HTMLEmbedElementImpl *embed = 0;
    QString serviceType;
    if( element()->id()==ID_OBJECT ) {

        // check for embed child object
        HTMLObjectElementImpl *o = static_cast<HTMLObjectElementImpl *>(element());
        serviceType = o->serviceType;
        NodeImpl *child = o->firstChild();
        while ( child ) {
            if ( child->id() == ID_EMBED )
                embed = static_cast<HTMLEmbedElementImpl *>( child );

            child = child->nextSibling();
        }

    } else if( element()->id()==ID_EMBED ) {
        embed = static_cast<HTMLEmbedElementImpl *>(element());
    }
    if ( embed )
	serviceType = embed->serviceType;

    // prepare for the local eventloop in KMessageBox
    ref();

    KHTMLPart *part = static_cast<KHTMLView *>(m_view)->part();
    KParts::BrowserExtension *ext = part->browserExtension();
    if( embed && !embed->pluginPage.isEmpty() && ext ) {
        // Prepare the mimetype to show in the question (comment if available, name as fallback)
        QString mimeName = serviceType;
        KMimeType::Ptr mime = KMimeType::mimeType(serviceType);
        if ( mime->name() != KMimeType::defaultMimeType() )
            mimeName = mime->comment();

        // Check if we already asked the user, for this page
        if (!mimeName.isEmpty() && part->docImpl() && !part->pluginPageQuestionAsked( serviceType ) )
        {
            part->setPluginPageQuestionAsked( serviceType );
            // Prepare the URL to show in the question (host only if http, to make it short)
            KURL pluginPageURL( embed->pluginPage );
            QString shortURL = pluginPageURL.protocol() == "http" ? pluginPageURL.host() : pluginPageURL.prettyURL();
            int res = KMessageBox::questionYesNo( m_view,
                                                  i18n("No plugin found for '%1'.\nDo you want to download one from %2?").arg(mimeName).arg(shortURL),
                                                  i18n("Missing Plugin"), i18n("Download"), i18n("Do Not Download"), QString("plugin-")+serviceType);
            if ( res == KMessageBox::Yes )
            {
                // Display vendor download page
                ext->createNewWindow( pluginPageURL );
                return;
            }
        }
    }

    // didn't work, render alternative content.
    if ( element() && (
         element()->id() == ID_OBJECT || element()->id() == ID_EMBED || element()->id() == ID_APPLET))
        static_cast<HTMLObjectBaseElementImpl*>( element() )->renderAlternative();

    deref();
}

void RenderPartObject::layout( )
{
    KHTMLAssert( needsLayout() );
    KHTMLAssert( minMaxKnown() );

    calcWidth();
    calcHeight();

    RenderPart::layout();

    setNeedsLayout(false);
}

void RenderPartObject::slotViewCleared()
{
  if(m_widget->inherits("QScrollView") ) {
#ifdef DEBUG_LAYOUT
      kdDebug(6031) << "iframe is a scrollview!" << endl;
#endif
      QScrollView *view = static_cast<QScrollView *>(m_widget);
      int frameStyle = QFrame::NoFrame;
      QScrollView::ScrollBarMode scroll = QScrollView::Auto;
      int marginw = -1;
      int marginh = -1;
      if ( element()->id() == ID_IFRAME) {
	  HTMLIFrameElementImpl *frame = static_cast<HTMLIFrameElementImpl *>(element());
	  if(frame->frameBorder)
	      frameStyle = QFrame::Box;
	  scroll = frame->scrolling;
	  marginw = frame->marginWidth;
	  marginh = frame->marginHeight;
      }
      view->setFrameStyle(frameStyle);
      view->setVScrollBarMode(scroll );
      view->setHScrollBarMode(scroll );
      if(view->inherits("KHTMLView")) {
#ifdef DEBUG_LAYOUT
          kdDebug(6031) << "frame is a KHTMLview!" << endl;
#endif
          KHTMLView *htmlView = static_cast<KHTMLView *>(view);
          htmlView->setIgnoreWheelEvents( element()->id() == ID_IFRAME );
          if(marginw != -1) htmlView->setMarginWidth(marginw);
          if(marginh != -1) htmlView->setMarginHeight(marginh);
        }
  }
}

#include "render_frames.moc"