render_frames.cpp

khtml在gtk上的移植版本

    setInline(true);
}

void RenderPartObject::updateWidget()
{
  QString url;
  QString serviceType;
  QStringList params;
  KHTMLPart *part = m_view->part();

  setNeedsLayoutAndMinMaxRecalc();

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

      HTMLObjectElementImpl *o = static_cast<HTMLObjectElementImpl *>(element());

      // Check for a child EMBED tag.
      HTMLEmbedElementImpl *embed = 0;
      for (NodeImpl *child = o->firstChild(); child; child = child->nextSibling()) {
          if (child->id() == ID_EMBED) {
              embed = static_cast<HTMLEmbedElementImpl *>( child );
              break;
          }
      }
      
      // Use the attributes from the EMBED tag instead of the OBJECT tag including WIDTH and HEIGHT.
      HTMLElementImpl *embedOrObject;
      if (embed) {
          embedOrObject = (HTMLElementImpl *)embed;
          DOMString attribute = embedOrObject->getAttribute(ATTR_WIDTH);
          if (!attribute.isEmpty()) {
              o->setAttribute(ATTR_WIDTH, attribute);
          }
          attribute = embedOrObject->getAttribute(ATTR_HEIGHT);
          if (!attribute.isEmpty()) {
              o->setAttribute(ATTR_HEIGHT, attribute);
          }
          url = embed->url;
          serviceType = embed->serviceType;
      } else {
          embedOrObject = (HTMLElementImpl *)o;
      }
      
      // If there was no URL or type defined in EMBED, try the OBJECT tag.
      if (url.isEmpty()) {
          url = o->url;
      }
      if (serviceType.isEmpty()) {
          serviceType = o->serviceType;
      }
      
      // 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() && (name == "src" || name == "movie"|| name == "code")) {
                  url = p->value();
              }
              if (serviceType.isEmpty() && 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 && url == "about:blank") {
	  KHTMLPart *newPart = v->part()->findFrame( o->name.string() );
	  if (newPart && newPart->xmlDocImpl()) {
	      newPart->xmlDocImpl()->setBaseURL( v->part()->baseURL().url() );
	  }
      }
  }
}

// ugly..
void RenderPartObject::close()
{
    if ( element()->id() == ID_OBJECT )
        updateWidget();
    RenderPart::close();
}

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;
}

void RenderPartObject::slotPartLoadingErrorNotify()
{
#if APPLE_CHANGES
    // FIXME: What are we going to do for this case?
#else
    // 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;

    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();
        // 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"), QString::null, QString::null, QString("plugin-")+serviceType);
	if ( res == KMessageBox::Yes )
	{
          // Display vendor download page
          ext->createNewWindow( pluginPageURL );
	}
    }
#endif // APPLE_CHANGES
}

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

#if !APPLE_CHANGES
    int m_oldwidth = m_width;
    int m_oldheight = m_height;
#endif

    calcWidth();
    calcHeight();

    RenderPart::layout();

    setNeedsLayout(false);
}

void RenderPartObject::slotViewCleared()
{
  if(element() && 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);

#if !APPLE_CHANGES
      view->setVScrollBarMode(scroll);
      view->setHScrollBarMode(scroll);
#endif

      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);
        }
  }
}

#if APPLE_CHANGES && KWIQ
// FIXME: This should not be necessary.  Remove this once WebKit knows to properly schedule
// layouts using WebCore when objects resize.
void RenderPart::updateWidgetPositions()
{
    if (!m_widget)
        return;
#if KWIQ
    return;
#endif
    
    int x, y, width, height;
    absolutePosition(x,y);
    x += borderLeft() + paddingLeft();
    y += borderTop() + paddingTop();
    width = m_width - borderLeft() - borderRight() - paddingLeft() - paddingRight();
    height = m_height - borderTop() - borderBottom() - paddingTop() - paddingBottom();
    QRect newBounds(x,y,width,height);
    if (newBounds != m_widget->frameGeometry()) {
        // The widget changed positions.  Update the frame geometry.
        RenderArena *arena = ref();
        element()->ref();
        m_widget->setFrameGeometry(newBounds);
        element()->deref();
        deref(arena);
        
        QScrollView *view = static_cast<QScrollView *>(m_widget);
        if (view && view->inherits("KHTMLView"))
            static_cast<KHTMLView*>(view)->layout();
    }
}
#endif

#include "render_frames.moc"