C++ DOMString::isEmpty方法代码示例

int XmlNamespaceTable::getNamespaceID(const DOMString& uri, bool readonly)
{
    if (uri == XHTML_NAMESPACE)
        return xhtmlNamespace;
    
    if (uri.isEmpty())
        return noNamespace;
    
    QString uriStr = uri.string();

    if (!gNamespaceTable) {
        gNamespaceTable = new QDict<XmlNamespaceEntry>;
        gNamespaceTable->insert(XHTML_NAMESPACE, new XmlNamespaceEntry(xhtmlNamespace, XHTML_NAMESPACE));
    }
    
    XmlNamespaceEntry* ns = gNamespaceTable->find(uriStr);
    if (ns) return ns->m_id;
    
    if (!readonly) {
        static int id = xhtmlNamespace+1;
        ns = new XmlNamespaceEntry(id++, uri);
        gNamespaceTable->insert(uriStr, ns);
        return ns->m_id;
    }
    
    return -1;
}

void HTMLScriptElementImpl::insertedIntoDocument()
{
    HTMLElementImpl::insertedIntoDocument();

    assert(!m_cachedScript);

    if (m_createdByParser)
        return;

    TQString url = getAttribute(ATTR_SRC).string();
    if (!url.isEmpty()) {
        TQString charset = getAttribute(ATTR_CHARSET).string();
        m_cachedScript = getDocument()->docLoader()->requestScript(DOMString(url), charset);
        if (m_cachedScript)
            m_cachedScript->ref(this);
        return;
    }

    // If there's an empty script node, we shouldn't evaluate the script
    // because if a script is inserted afterwards (by setting text or innerText)
    // it should be evaluated, and evaluateScript only evaluates a script once.
    DOMString scriptString = text();
    if (!scriptString.isEmpty())
        evaluateScript(getDocument()->URL().url(), scriptString);
}

DOMString QualifiedName::tagName() const
{
    DOMString prefix = m_prefix.toString();
    DOMString localName = m_localName.toString();
    if (prefix.isEmpty())
        return localName;
    return prefix + DOMString(":") + localName;
}

void HTMLAppletElementImpl::attach()
{
    KHTMLView* w = getDocument()->view();

#ifndef Q_WS_QWS // FIXME?
    DOMString codeBase = getAttribute( ATTR_CODEBASE );
    DOMString code = getAttribute( ATTR_CODE );
    if ( !codeBase.isEmpty() )
        url = codeBase.string();
    if ( !code.isEmpty() )
        url = code.string();

    if (!w || !w->part()->javaEnabled())
#endif
        m_renderAlternative = true;

    HTMLObjectBaseElementImpl::attach();
}

void ElementImpl::setAttribute(NodeImpl::Id id, const DOMString &value, const DOMString &qName, int &exceptioncode)
{
    // NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly
    if(isReadOnly())
    {
        exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
        return;
    }
    attributes()->setValue(id, value.implementation(), (qName.isEmpty() ? 0 : qName.implementation()));
}

void ProspectiveTokenizer::emitCSSRule()
{
    QString rule(m_cssRule.data(), m_cssRule.size());
    if (rule.toLower() == "import" && !m_cssRuleValue.isEmpty()) {
        DOMString value = DOMString(m_cssRuleValue.data(), m_cssRuleValue.size());
        DOMString url = parseURL(value);
        if (!url.isEmpty())
            m_document->docLoader()->registerPreload( m_document->docLoader()->requestStyleSheet( m_urlToLoad, m_document->part()->encoding() ) ); // #### charset
    }
    m_cssRule.clear();
    m_cssRuleValue.clear();
}

void XMLTokenizer::executeScripts()
{
    // Iterate through all of the html <script> tags in the document. For those that have a src attribute,
    // start loading the script and return (executeScripts() will be called again once the script is loaded
    // and continue where it left off). For scripts that don't have a src attribute, execute the code
    // inside the tag
    while(m_scriptsIt->current())
    {
        DOMString scriptSrc = m_scriptsIt->current()->getAttribute(ATTR_SRC);
        QString charset = m_scriptsIt->current()->getAttribute(ATTR_CHARSET).string();

        if(!scriptSrc.isEmpty())
        {
            // we have a src attribute
            m_cachedScript = m_doc->docLoader()->requestScript(scriptSrc, charset);
            ++(*m_scriptsIt);
            if(m_cachedScript)
            {
                m_cachedScript->ref(this); // will call executeScripts() again if already cached
                return;
            }
        }
        else
        {
            // no src attribute - execute from contents of tag
            QString scriptCode = "";
            NodeImpl *child;
            for(child = m_scriptsIt->current()->firstChild(); child; child = child->nextSibling())
            {
                if((child->nodeType() == Node::TEXT_NODE || child->nodeType() == Node::CDATA_SECTION_NODE)
                   && static_cast< TextImpl * >(child)->string())
                    scriptCode += QConstString(static_cast< TextImpl * >(child)->string()->s, static_cast< TextImpl * >(child)->string()->l).string();
            }
            // the script cannot do document.write until we support incremental parsing
            // ### handle the case where the script deletes the node or redirects to
            // another page, etc. (also in notifyFinished())
            // ### the script may add another script node after this one which should be executed
            if(m_view)
            {
                m_view->part()->executeScript(DOM::Node(), scriptCode);
            }
            ++(*m_scriptsIt);
        }
    }

    // All scripts have finished executing, so calculate the style for the document and close
    // the last element
    m_doc->updateStyleSelector();

    // We are now finished parsing
    end();
}

void MediaListImpl::setMediaText(const DOM::DOMString &value)
{
    m_lstMedia.clear();
    const QString val = value.string();
    const QStringList list = QStringList::split( ',', val );

    const QStringList::ConstIterator itEnd = list.end();

    for ( QStringList::ConstIterator it = list.begin(); it != itEnd; ++it )
    {
        const DOMString medium = (*it).stripWhiteSpace();
        if( !medium.isEmpty() )
            m_lstMedia.append( medium );
    }
}

void HTMLBRElementImpl::parseAttribute(AttributeImpl *attr)
{
    switch(attr->id())
    {
    case ATTR_CLEAR:
    {
        DOMString str = attr->value();
        if( str.isEmpty() ) str = "none";
        else if( strcasecmp (str,"all")==0 ) str = "both";
        addCSSProperty(CSS_PROP_CLEAR, str);
        break;
    }
    default:
        HTMLElementImpl::parseAttribute(attr);
    }
}

void RenderImage::updateFromElement()
{
    if (element()->id() == ID_INPUT)
        alt = static_cast<HTMLInputElementImpl*>(element())->altText();
    else if (element()->id() == ID_IMG)
        alt = static_cast<HTMLImageElementImpl*>(element())->altText();

    DOMString u = element()->id() == ID_OBJECT ?
                  element()->getAttribute(ATTR_DATA) : element()->getAttribute(ATTR_SRC);

    if (!u.isEmpty() &&
        ( !m_cachedImage || m_cachedImage->url() != u ) ) {
        CachedImage *new_image = element()->document()->docLoader()->
                                 requestImage(khtml::parseURL(u));

        if(new_image && new_image != m_cachedImage)
            updateImage( new_image );
    }
}

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() && (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) {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        }
    }

    if (!fontFace || !fontFace->isValid()) {
        delete fontFace;
        return;
    }

    /*
        if (rangeList) {
            unsigned numRanges = rangeList->length();
            for (unsigned i = 0; i < numRanges; i++) {
                CSSUnicodeRangeValueImpl* range = static_cast<CSSUnicodeRangeValueImpl*>(rangeList->item(i));
                fontFace->addRange(range->from(), range->to());
            }
        }
    */

    // Hash under every single family name.
    int familyLength = familyList->length();
    for (int i = 0; i < familyLength; i++) {
        CSSPrimitiveValueImpl *item = static_cast<CSSPrimitiveValueImpl *>(familyList->item(i));
        DOMString familyName;
        if (item->primitiveType() == CSSPrimitiveValue::CSS_STRING) {
            familyName = DOMString(static_cast<FontFamilyValueImpl *>(item)->fontName());
        } else if (item->primitiveType() == CSSPrimitiveValue::CSS_IDENT) {
            // We need to use the raw text for all the generic family types, since @font-face is a way of actually
            // defining what font to use for those types.
            switch (item->getIdent()) {
            case CSS_VAL_SERIF:
                familyName = "-khtml-serif";
                break;
            case CSS_VAL_SANS_SERIF:
                familyName = "-khtml-sans-serif";
                break;
            case CSS_VAL_CURSIVE:
                familyName = "-khtml-cursive";
                break;
            case CSS_VAL_FANTASY:
                familyName = "-khtml-fantasy";
                break;
            case CSS_VAL_MONOSPACE:
                familyName = "-khtml-monospace";
                break;
            default:
                break;
            }
        }

        if (familyName.isEmpty()) {
            continue;
        }

        fontFace->addFamilyName(familyName);
        m_locallyInstalledFontFaces.insertMulti(familyName.lower(), fontFace);
        fontFace->ref();

#if 0
        // ENABLE(SVG_FONTS)
        // SVG allows several <font> elements with the same font-family, differing only
        // in ie. font-variant. Be sure to pick up the right one - in getFontData below.
        if (foundSVGFont && (traitsMask & FontVariantSmallCapsMask)) {
            familyName += "-webkit-svg-small-caps";
        }
#endif

        /*
                Vector<RefPtr<CSSFontFace> >* familyFontFaces = m_fontFaces.get(familyName);
                if (!familyFontFaces) {
                    familyFontFaces = new Vector<RefPtr<CSSFontFace> >;
                    m_fontFaces.set(familyName, familyFontFaces);

                    ASSERT(!m_locallyInstalledFontFaces.contains(familyName));
                    Vector<RefPtr<CSSFontFace> >* familyLocallyInstalledFaces;

                    Vector<unsigned> locallyInstalledFontsTraitsMasks;
                    fontCache()->getTraitsInFamily(familyName, locallyInstalledFontsTraitsMasks);
                    unsigned numLocallyInstalledFaces = locallyInstalledFontsTraitsMasks.size();
                    if (numLocallyInstalledFaces) {
                        familyLocallyInstalledFaces = new Vector<RefPtr<CSSFontFace> >;
                        m_locallyInstalledFontFaces.set(familyName, familyLocallyInstalledFaces);

                        for (unsigned i = 0; i < numLocallyInstalledFaces; ++i) {
                            RefPtr<CSSFontFace> locallyInstalledFontFace = CSSFontFace::create(static_cast<FontTraitsMask>(locallyInstalledFontsTraitsMasks[i]));
                            locallyInstalledFontFace->addSource(new CSSFontFaceSource(familyName));
                            ASSERT(locallyInstalledFontFace->isValid());
                            familyLocallyInstalledFaces->append(locallyInstalledFontFace);
                        }
                    }
                }

                familyFontFaces->append(fontFace);
        */
    }

    // Should be impossible, but in case empty/invalid family name makes it through...
    if (fontFace->refCount() < 1) {
        delete fontFace;
    }
}

bool MediaQueryEvaluator::mediaTypeMatch(const DOMString& mediaTypeToMatch) const
{
    return mediaTypeToMatch.isEmpty()
        || !strcasecmp("all", mediaTypeToMatch)
        || !strcasecmp(m_mediaType, mediaTypeToMatch);
}