C++ KHTMLPart::requestObject方法代码示例

bool RenderPartObject::partLoadingErrorNotify( khtml::ChildFrame *childFrame, const KURL& url, const QString& serviceType )
{
    KHTMLPart *part = static_cast<KHTMLView *>(m_view)->part();
    //kdDebug() << "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";
            if (part->requestObject( childFrame, url, args ))
                return true; // success
        }
    }
    // Dissociate ourselves from the current event loop (to prevent crashes
    // due to the message box staying up)
    QTimer::singleShot( 0, this, SLOT( slotPartLoadingErrorNotify() ) );
    Tokenizer *tokenizer = static_cast<DOM::DocumentImpl *>(part->document().handle())->tokenizer();
    if (tokenizer) tokenizer->setOnHold( true );
    slotPartLoadingErrorNotify();
    if (tokenizer) tokenizer->setOnHold( false );
    return false;
}

//.........这里部分代码省略.........
      }
      
      // Then try the PARAM tags for the URL and type attributes.
      NodeImpl *child = o->firstChild();
      while (child && (url.isEmpty() || serviceType.isEmpty())) {
          if (child->id() == ID_PARAM) {
              HTMLParamElementImpl *p = static_cast<HTMLParamElementImpl *>( child );
              QString name = p->name().lower();
              if (url.isEmpty() && (QString::equals(name,"src") || QString::equals(name,"movie") || QString::equals(name,"code"))) {
                  url = p->value();
              }
              if (serviceType.isEmpty() && QString::equals(name,"type")) {
                  serviceType = p->value();
              }
              
          }
          child = child->nextSibling();
      }
      
      // Lastly try to map a specific CLASSID to a type.
      if (serviceType.isEmpty() && !o->classId.isEmpty()) {
          if (o->classId.contains("D27CDB6E-AE6D-11cf-96B8-444553540000")) {
              // 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(o->classId.contains("CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA")) {
              serviceType = "audio/x-pn-realaudio-plugin";
          } else if(o->classId.contains("02BF25D5-8C17-4B23-BC80-D3488ABDDC6B")) {
              serviceType = "video/quicktime";
          } else if(o->classId.contains("166B1BCA-3F9C-11CF-8075-444553540000")) {
              serviceType = "application/x-director";
          } else {
              // We have a clsid, means this is activex (Niko)
              serviceType = "application/x-activex-handler";
          }
          // TODO: add more plugins here
      }
      
      // If no URL and type, abort.
      if (url.isEmpty() && serviceType.isEmpty()) {
#ifdef DEBUG_LAYOUT
          kdDebug() << "RenderPartObject::close - empty url and serverType" << endl;
#endif
          return;
      }
      
      // Turn the attributes of either the EMBED tag or OBJECT tag into an array.
      NamedAttrMapImpl* attributes = embedOrObject->attributes();
      if (attributes) {
          for (unsigned long i = 0; i < attributes->length(); ++i) {
              AttributeImpl* it = attributes->attributeItem(i);
              params.append(o->getDocument()->attrName(it->id()).string() + "=\"" + it->value().string() + "\"");
          }
      }
      
      params.append( QString::fromLatin1("__KHTML__CLASSID=\"%1\"").arg( o->classId ) );
      params.append( QString::fromLatin1("__KHTML__CODEBASE=\"%1\"").arg( o->getAttribute(ATTR_CODEBASE).string() ) );
      
      part->requestObject( this, url, serviceType, params );
  } else if ( element()->id() == ID_EMBED ) {

      HTMLEmbedElementImpl *o = static_cast<HTMLEmbedElementImpl *>(element());
      url = o->url;
      serviceType = o->serviceType;

      if ( url.isEmpty() && serviceType.isEmpty() ) {
#ifdef DEBUG_LAYOUT
          kdDebug() << "RenderPartObject::close - empty url and serverType" << endl;
#endif
          return;
      }
      // add all attributes set on the embed object
      NamedAttrMapImpl* a = o->attributes();
      if (a) {
          for (unsigned long i = 0; i < a->length(); ++i) {
              AttributeImpl* it = a->attributeItem(i);
              params.append(o->getDocument()->attrName(it->id()).string() + "=\"" + it->value().string() + "\"");
          }
      }
      part->requestObject( this, url, serviceType, params );
  } else {
      assert(element()->id() == ID_IFRAME);
      HTMLIFrameElementImpl *o = static_cast<HTMLIFrameElementImpl *>(element());
      url = o->url.string();
      if (url.isEmpty())
	  url = "about:blank";
      KHTMLView *v = static_cast<KHTMLView *>(m_view);
      bool requestSucceeded = v->part()->requestFrame( this, url, o->name.string(), QStringList(), true );
      if (requestSucceeded && QString::equals(url,"about:blank")) {
	  KHTMLPart *newPart = v->part()->findFrame( o->name.string() );
	  if (newPart && newPart->xmlDocImpl()) {
	      newPart->xmlDocImpl()->setBaseURL( v->part()->baseURL().url() );
	  }
      }
  }
}