html_objectimpl.cpp

最新Nokia手机浏览器全套源代码完美版。

#else
    if (m_render)
      {
      static_cast<RenderPartObject*>(m_render)->updateWidget();
      }
#endif
}

#if NOKIA_CHANGES
void HTMLEmbedElementImpl::detach()
{
  // Only bother with an unload event if we had a render object.
    if (attached() && m_render)
    {
      // ### do this when we are actualy removed from document instead
      dispatchHTMLEvent(EventImpl::UNLOAD_EVENT,false,false);
    }
  HTMLElementImpl::detach();
}

void HTMLEmbedElementImpl::recalcStyle(StyleChange ch)
{
    if (needWidgetUpdate && m_render && !canRenderImageType(serviceType))
    {
      // Set needWidgetUpdate to false before calling updateWidget because updateWidget may cause
      // this method or attach (which also calls updateWidget) to be called.
      needWidgetUpdate = false;
        static_cast<RenderPartObject*>(m_render)->updateWidget();
      dispatchHTMLEvent(EventImpl::LOAD_EVENT,false,false);
      }
    HTMLElementImpl::recalcStyle(ch);
}

void HTMLEmbedElementImpl::childrenChanged()
{
    if (inDocument())
    {
      needWidgetUpdate = true;
      setChanged();
    }
}
#endif

bool HTMLEmbedElementImpl::isURLAttribute(AttributeImpl *attr) const
{
    return attr->id() == ATTR_SRC;
}

#if NOKIA_CHANGES
bool HTMLEmbedElementImpl::isFocusable() const
{
    if (!m_render || (m_render->style() && m_render->style()->visibility() != VISIBLE))
        return false;
#ifdef RD_32_BROWSER
    else {
        RenderPartObject* render = static_cast<RenderPartObject*>( m_render );
        return render->focusable();
    }
#else
    return true;
#endif
}

void HTMLEmbedElementImpl::defaultEventHandler(EventImpl *evt)
{
    if (evt->id() == EventImpl::KEYPRESS_EVENT && evt->isKeyboardEvent()) {
//        getDocument()->activateNode (this);
    }
    HTMLElementImpl::defaultEventHandler(evt);

}
#endif

// -------------------------------------------------------------------------
#if NOKIA_CHANGES

HTMLBgsoundElementImpl::HTMLBgsoundElementImpl(DocumentPtr *doc)
    : HTMLEmbedElementImpl(doc)
{}

HTMLBgsoundElementImpl::~HTMLBgsoundElementImpl()
{
}

NodeImpl::Id HTMLBgsoundElementImpl::id() const
{
    return ID_BGSOUND;
}
#endif

// -------------------------------------------------------------------------

HTMLObjectElementImpl::HTMLObjectElementImpl(DocumentPtr *doc)
#if APPLE_CHANGES && !NOKIA_CHANGES
: HTMLElementImpl(doc), m_imageLoader(0), objectInstance(0)
#else
: HTMLElementImpl(doc), m_imageLoader(0)
#endif
{
    needWidgetUpdate = false;
    m_useFallbackContent = false;
    m_complete = false;
#ifdef NOKIA_CHANGES
    khtml::HTMLTokenizer* tokenizer = static_cast<khtml::HTMLTokenizer*>(doc->document()->tokenizer());
    m_canLoadPlugin = tokenizer ? tokenizer->isExecutingDocumentWrite() && tokenizer->isExecutingExternalScript() : false;
#endif
}

HTMLObjectElementImpl::~HTMLObjectElementImpl()
{
    delete m_imageLoader;
}

NodeImpl::Id HTMLObjectElementImpl::id() const
{
    return ID_OBJECT;
}

#if APPLE_CHANGES && !NOKIA_CHANGES
KJS::Bindings::Instance *HTMLObjectElementImpl::getObjectInstance() const
{
    KHTMLPart* part = getDocument()->part();
    if (!part)
        return 0;

    if (objectInstance)
        return objectInstance;

    if (RenderObject *r = m_render) {
        if (r->isWidget()) {
            if (QWidget *widget = static_cast<RenderWidget *>(r)->widget()) {
                if (NSView *view = widget->getView())  {
                    // Call into the part (and over the bridge) to pull the Bindings::Instance
                    // from the guts of the plugin.
                    objectInstance = KWQ(part)->getObjectInstanceForView(view);
                    // Applet may specified with <object> tag.
                    if (!objectInstance)
                        objectInstance = KWQ(part)->getAppletInstanceForView(view);
                }
            }
        }
    }

    return objectInstance;
}
#endif

HTMLFormElementImpl *HTMLObjectElementImpl::form() const
{
  return 0;
}

bool HTMLObjectElementImpl::mapToEntry(NodeImpl::Id attr, MappedAttributeEntry& result) const
{
    switch (attr) {
        case ATTR_WIDTH:
        case ATTR_HEIGHT:
            result = eUniversal;
            return false;
        default:
            break;
    }

    return HTMLElementImpl::mapToEntry(attr, result);
}

void HTMLObjectElementImpl::parseHTMLAttribute(HTMLAttributeImpl *attr)
{
  QString val = attr->value().string();
  int pos;
  switch ( attr->id() )
  {
    case ATTR_TYPE:
      serviceType = val.lower();
      pos = serviceType.find( ";" );
      if ( pos!=-1 )
          serviceType = serviceType.left( pos );
      if (m_render)
          needWidgetUpdate = true;
      if (!isImageType() && m_imageLoader) {
          delete m_imageLoader;
          m_imageLoader = 0;
      }
      break;
    case ATTR_DATA:
      url = khtml::parseURL(  val ).string();
      if (m_render)
          needWidgetUpdate = true;
      if (m_render && isImageType()) {
          if (!m_imageLoader)
              m_imageLoader = new HTMLImageLoader(this);
          m_imageLoader->updateFromElement();
      }
#if NOKIA_CHANGES
    else if ( m_render )
      {
        setChanged( );
        }
#endif
      break;
    case ATTR_WIDTH:
      addCSSLength( attr, CSS_PROP_WIDTH, attr->value());
      break;
    case ATTR_HEIGHT:
      addCSSLength( attr, CSS_PROP_HEIGHT, attr->value());
      break;
    case ATTR_CLASSID:
      classId = val;
      if (m_render)
          needWidgetUpdate = true;
      break;
    case ATTR_ONLOAD: // ### support load/unload on object elements
        setHTMLEventListener(EventImpl::LOAD_EVENT,
      getDocument()->createHTMLEventListener(attr->value().string(), this));
        break;
    case ATTR_ONUNLOAD:
        setHTMLEventListener(EventImpl::UNLOAD_EVENT,
      getDocument()->createHTMLEventListener(attr->value().string(), this));
        break;
#ifdef NOKIA_CHANGES
    case ATTR_ALIGN:
        addHTMLAlignment(attr);
        break;
#endif
    default:
      HTMLElementImpl::parseHTMLAttribute( attr );
  }
}

DocumentImpl* HTMLObjectElementImpl::contentDocument() const
{
    // ###
    return 0;
}

bool HTMLObjectElementImpl::rendererIsNeeded(RenderStyle *style)
{
    if (m_useFallbackContent || isImageType())
        return HTMLElementImpl::rendererIsNeeded(style);
#if NOKIA_CHANGES
    if (getDocument()->fastDisplayMode())
        return false;
#endif
    KHTMLPart* part = getDocument()->part();
    if (!part || !part->pluginsEnabled()) {
        return false;
    }
#if APPLE_CHANGES
    // Eventually we will merge with the better version of this check on the tip of tree.
    // Until then, just leave it out.
#else
    KURL u = getDocument()->completeURL(url);
    for (KHTMLPart* part = w->part()->parentPart(); part; part = part->parentPart())
        if (part->url() == u) {
            return false;
        }
#endif
    return true;
}

RenderObject *HTMLObjectElementImpl::createRenderer(RenderArena *arena, RenderStyle *style)
{
    if (m_useFallbackContent)
        return RenderObject::createObject(this, style);
    if (isImageType())
        return new (arena) RenderImage(this);
    return new (arena) RenderPartObject(this);
}

void HTMLObjectElementImpl::attach()
{
    HTMLElementImpl::attach();

    if (m_render && !m_useFallbackContent) {
        if (isImageType()) {
            if (!m_imageLoader)
                m_imageLoader = new HTMLImageLoader(this);
            m_imageLoader->updateFromElement();
            if (renderer()) {
                RenderImage* imageObj = static_cast<RenderImage*>(renderer());
                imageObj->setImage(m_imageLoader->image());
            }
        } else {
            if (needWidgetUpdate) {
                // Set needWidgetUpdate to false before calling updateWidget because updateWidget may cause
                // this method or recalcStyle (which also calls updateWidget) to be called.
                needWidgetUpdate = false;
                static_cast<RenderPartObject*>(m_render)->updateWidget();
            } else {
                needWidgetUpdate = true;
                setChanged();
            }
        }
    }
}

void HTMLObjectElementImpl::closeRenderer()
{
    // The parser just reached </object>.
    setComplete(true);

    HTMLElementImpl::closeRenderer();
}

void HTMLObjectElementImpl::setComplete(bool complete)
{
    if (complete != m_complete) {
        m_complete = complete;
        if (complete && inDocument() && !m_useFallbackContent) {
            needWidgetUpdate = true;
            setChanged();
        }
    }
}

void HTMLObjectElementImpl::detach()
{
    if (attached() && m_render && !m_useFallbackContent) {
        // Update the widget the next time we attach (detaching destroys the plugin).
        needWidgetUpdate = true;
    }

    HTMLElementImpl::detach();
}

void HTMLObjectElementImpl::recalcStyle(StyleChange ch)
{
    if (!m_useFallbackContent && needWidgetUpdate && m_render && !isImageType()) {
        // Set needWidgetUpdate to false before calling updateWidget because updateWidget may cause
        // this method or attach (which also calls updateWidget) to be called.
        needWidgetUpdate = false;
        static_cast<RenderPartObject*>(m_render)->updateWidget();
        dispatchHTMLEvent(EventImpl::LOAD_EVENT,false,false);
    }
    HTMLElementImpl::recalcStyle(ch);
}

void HTMLObjectElementImpl::childrenChanged()
{
    if (inDocument() && !m_useFallbackContent) {
        needWidgetUpdate = true;
        setChanged();
    }
}

bool HTMLObjectElementImpl::isURLAttribute(AttributeImpl *attr) const
{
    return (attr->id() == ATTR_DATA || (attr->id() == ATTR_USEMAP && attr->value().domString()[0] != '#'));
}

#if NOKIA_CHANGES
bool HTMLObjectElementImpl::isFocusable() const
{
    if (!m_render || (m_render->style() && m_render->style()->visibility() != VISIBLE))
        return false;
#ifdef RD_32_BROWSER
    else {
        RenderPartObject* render = static_cast<RenderPartObject*>( m_render );
        return render->focusable();
    }
#else
    return true;
#endif
}

void HTMLObjectElementImpl::defaultEventHandler(EventImpl *evt)
{
    if (evt->id() == EventImpl::KEYPRESS_EVENT && evt->isKeyboardEvent()) {
//        getDocument()->activateNode (this);
    }
    HTMLElementImpl::defaultEventHandler(evt);
}
#endif

bool HTMLObjectElementImpl::isImageType()
{
    if (serviceType.isEmpty() && url.startsWith("data:")) {
        // Extract the MIME type from the data URL.
        int index = url.find(';');
        if (index == -1)
            index = url.find(',');
        if (index != -1) {
            int len = index - 5;
            if (len > 0)
                serviceType = url.mid(5, len);
            else
                serviceType = "text/plain"; // Data URLs with no MIME type are considered text/plain.
        }
    }

    return canRenderImageType(serviceType);
}

void HTMLObjectElementImpl::renderFallbackContent()
{
    if (m_useFallbackContent)
        return;

    // Mark ourselves as using the fallback content.
    m_useFallbackContent = true;

    // Now do a detach and reattach.
    // FIXME: Style gets recalculated which is suboptimal.
    detach();
    attach();
}

// -------------------------------------------------------------------------

HTMLParamElementImpl::HTMLParamElementImpl(DocumentPtr *doc)
    : HTMLElementImpl(doc)
{
}

HTMLParamElementImpl::~HTMLParamElementImpl()
{
}

NodeImpl::Id HTMLParamElementImpl::id() const
{
    return ID_PARAM;
}

void HTMLParamElementImpl::parseHTMLAttribute(HTMLAttributeImpl *attr)
{
    switch( attr->id() )
    {
    case ATTR_ID:
        // Must call base class so that hasID bit gets set.
        HTMLElementImpl::parseHTMLAttribute(attr);
        if (getDocument()->htmlMode() != DocumentImpl::XHtml) break;
        // fall through
    case ATTR_NAME:
        m_name = attr->value();
        break;
    case ATTR_VALUE:
        m_value = attr->value();
        break;
    }
}

bool HTMLParamElementImpl::isURLAttribute(AttributeImpl *attr) const
{
    if (attr->id() == ATTR_VALUE) {
        AttributeImpl *attr = attributes()->getAttributeItem(ATTR_NAME);
        if (attr) {
            DOMString value = attr->value().string().lower();
            if (value == "src" || value == "movie" || value == "data") {
                return true;
            }
        }
    }
    return false;
}