C++ KHTMLPart::parentPart方法代码示例

static bool orientationMediaFeatureEval(CSSValueImpl *value, RenderStyle *, KHTMLPart *part,  MediaFeaturePrefix /*op*/)
{
    if (value) {
        CSSPrimitiveValueImpl *pv = static_cast<CSSPrimitiveValueImpl *>(value);
        if (!value->isPrimitiveValue() || pv->primitiveType() != CSSPrimitiveValue::CSS_IDENT ||
                (pv->getIdent() != CSS_VAL_PORTRAIT && pv->getIdent() != CSS_VAL_LANDSCAPE)) {
            return false;
        }

        KHTMLPart *rootPart = part;
        while (rootPart->parentPart()) {
            rootPart = rootPart->parentPart();
        }
        DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl *>(rootPart->document().handle());
        QPaintDevice *pd = doc->paintDevice();
        bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
        if (printing) {
            if (pd->width() > pd->height()) {
                return (pv->getIdent() == CSS_VAL_LANDSCAPE);
            }
        } else {
            if (part->view()->visibleWidth() > part->view()->visibleHeight()) {
                return (pv->getIdent() == CSS_VAL_LANDSCAPE);
            }
        }
        return (pv->getIdent() == CSS_VAL_PORTRAIT);
    }
    return false;
}

static bool monochromeMediaFeatureEval(CSSValueImpl* value, RenderStyle*, KHTMLPart* part,  MediaFeaturePrefix op)
{
    KHTMLPart* rootPart = part;
    while (rootPart->parentPart()) rootPart = rootPart->parentPart();
    DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl*>(rootPart->document().handle());
    QPaintDevice *pd = doc->paintDevice(); 
    bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
    int depth = 0;
    if (printing) {
        if (pd->numColors() < 2)
            depth = 1;
        // assume printer is either b&w or color.
    } else {
        int sn = QApplication::desktop()->screenNumber( rootPart->view() );
        if (QApplication::desktop()->screen(sn)->depth() == 1)
            depth = 1;
        else if (QColormap::instance(sn).mode() == QColormap::Gray)
            depth = QApplication::desktop()->screen(sn)->depth();
    }
    if (value)
    {
        float number = 0;
        return numberValue(value, number) && compareValue(depth, static_cast<int>(number), op);
    }
    return depth;
}

static bool aspect_ratioMediaFeatureEval(CSSValueImpl *value, RenderStyle *, KHTMLPart *part,  MediaFeaturePrefix op)
{
    if (value) {
        KHTMLPart *rootPart = part;
        while (rootPart->parentPart()) {
            rootPart = rootPart->parentPart();
        }
        DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl *>(rootPart->document().handle());
        QPaintDevice *pd = doc->paintDevice();
        bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
        QSize vs;
        int h = 0, v = 0;
        if (printing) {
            vs = QSize(pd->width(), pd->height());
        } else {
            vs = QSize(part->view()->visibleWidth(), part->view()->visibleHeight());
        }
        if (parseAspectRatio(value, h, v)) {
            return v != 0  && compareValue(vs.width() * v, vs.height() * h, op);
        }
        return false;
    }
    // ({,min-,max-}aspect-ratio)
    // assume if we have a viewport, its aspect ratio is non-zero
    return true;
}

static bool device_aspect_ratioMediaFeatureEval(CSSValueImpl *value, RenderStyle *, KHTMLPart *part,  MediaFeaturePrefix op)
{
    if (value) {
        KHTMLPart *rootPart = part;
        while (rootPart->parentPart()) {
            rootPart = rootPart->parentPart();
        }
        DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl *>(rootPart->document().handle());
        QPaintDevice *pd = doc->paintDevice();
        bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
        QRect sg;
        int h = 0, v = 0;
        if (printing) {
            sg = QRect(0, 0, pd->width(), pd->height());
        } else {
            sg = QApplication::desktop()->screen(QApplication::desktop()->screenNumber(rootPart->view()))->rect();
        }
        if (parseAspectRatio(value, h, v)) {
            return v != 0  && compareValue(sg.width() * v, sg.height() * h, op);
        }
        return false;
    }

    // ({,min-,max-}device-aspect-ratio)
    // assume if we have a device, its aspect ratio is non-zero
    return true;
}

static bool colorMediaFeatureEval(CSSValueImpl *value, RenderStyle *, KHTMLPart *part,  MediaFeaturePrefix op)
{
    KHTMLPart *rootPart = part;
    while (rootPart->parentPart()) {
        rootPart = rootPart->parentPart();
    }
    DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl *>(rootPart->document().handle());
    QPaintDevice *pd = doc->paintDevice();
    bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
    int bitsPerComponent = 0;
    if (printing) {
        if (pd->colorCount() > 2) {
            bitsPerComponent = pd->depth() / 3;
        }
        // assume printer is either b&w or color.
    } else {
        int sn = QApplication::desktop()->screenNumber(rootPart->view());
        if (QColormap::instance(sn).mode() != QColormap::Gray) {
            bitsPerComponent = QApplication::desktop()->screen(sn)->depth() / 3;
        }
    }
    if (value && bitsPerComponent) {
        float number = 0;
        return numberValue(value, number) && compareValue(bitsPerComponent, static_cast<int>(number), op);
    }
    return bitsPerComponent;
}

static bool color_indexMediaFeatureEval(CSSValueImpl *value, RenderStyle *, KHTMLPart *part,  MediaFeaturePrefix op)
{
    KHTMLPart *rootPart = part;
    while (rootPart->parentPart()) {
        rootPart = rootPart->parentPart();
    }
    DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl *>(rootPart->document().handle());
    QPaintDevice *pd = doc->paintDevice();
    bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
    unsigned int numColors = 0;
    if (printing) {
        numColors = pd->colorCount();
    } else {
        int sn = QApplication::desktop()->screenNumber(rootPart->view());
        numColors = QApplication::desktop()->screen(sn)->colorCount();
    }
    if (numColors == INT_MAX) {
        numColors = UINT_MAX;
    }
    if (value) {
        float number = 0;
        return numberValue(value, number) && compareValue(numColors, static_cast<unsigned int>(number), op);
    }

    return numColors;
}

void HTMLLinkElementImpl::process()
{
    if (!inDocument())
        return;

    QString type = m_type.string().lower();
    QString rel = m_rel.string().lower();

    KHTMLPart* part = getDocument()->part();

    // IE extension: location of small icon for locationbar / bookmarks
#if APPLE_CHANGES
    if ( part && rel == "shortcut icon" && !m_url.isEmpty() && !part->parentPart())
    	part->browserExtension()->setIconURL( KURL(m_url.string()) );

    // Mozilla extension to IE extension: icon specified with type
    if ( part && rel == "icon" && !m_url.isEmpty() && !part->parentPart())
    	part->browserExtension()->setTypedIconURL( KURL(m_url.string()), type );
#else
    // Uses both "shortcut icon" and "icon"
   
    if ( part && rel.contains("icon") && !m_url.isEmpty() && !part->parentPart())
        part->browserExtension()->setIconURL( KURL(m_url.string()) );
#endif

    // Stylesheet
    // This was buggy and would incorrectly match <link rel="alternate">, which has a different specified meaning. -dwh
    if(m_disabledState != 2 && (type.contains("text/css") || rel == "stylesheet" || (rel.contains("alternate") && rel.contains("stylesheet"))) && getDocument()->part()) {
        // no need to load style sheets which aren't for the screen output
        // ### there may be in some situations e.g. for an editor or script to manipulate
	// also, don't load style sheets for standalone documents
        if( m_media.isNull() || m_media.contains("screen") || m_media.contains("all") || m_media.contains("print") ) {
            m_loading = true;

            // Add ourselves as a pending sheet, but only if we aren't an alternate 
            // stylesheet.  Alternate stylesheets don't hold up render tree construction.
            m_alternate = rel.contains("alternate");
            if (!isAlternate())
                getDocument()->addPendingSheet();
            
            QString chset = getAttribute( ATTR_CHARSET ).string();
            if (m_cachedSheet)
                m_cachedSheet->deref(this);
            m_cachedSheet = getDocument()->docLoader()->requestStyleSheet(m_url, chset);
            if (m_cachedSheet)
                m_cachedSheet->ref(this);
        }
    }
    else if (m_sheet) {
        // we no longer contain a stylesheet, e.g. perhaps rel or type was changed
        m_sheet->deref();
        m_sheet = 0;
        getDocument()->updateStyleSelector();
    }
}

bool HTMLElementImpl::isURLAllowed(const QString& url) const
{
    KHTMLView *w = getDocument()->view();

    KURL newURL(getDocument()->completeURL(url));
    newURL.setRef(QString::null);

    // Prohibit non-file URLs if we are asked to.
    if (!w || w->part()->onlyLocalReferences() && newURL.protocol() != "file")
        return false;

    // do we allow this suburl ?
    if ( !kapp || !kapp->kapp->authorizeURLAction("redirect", w->part()->url(), newURL) )
        return false;

    // We allow one level of self-reference because some sites depend on that.
    // But we don't allow more than one.
    bool foundSelfReference = false;
    for (KHTMLPart *part = w->part(); part; part = part->parentPart()) {
        KURL partURL = part->url();
        partURL.setRef(QString::null);
        if (partURL == newURL) {
            if (foundSelfReference)
                return false;
            foundSelfReference = true;
        }
    }

    return true;
}

void HTMLLinkElementImpl::process()
{
    if(!inDocument())
        return;

    QString type = getAttribute(ATTR_TYPE).string().lower();
    QString rel = getAttribute(ATTR_REL).string().lower();

    KHTMLPart *part = getDocument()->view() ? getDocument()->view()->part() : 0;

    // IE extension: location of small icon for locationbar / bookmarks
    // Uses both "shortcut icon" and "icon"
    if(part && rel.contains("icon") && !m_url.isEmpty() && !part->parentPart())
        part->browserExtension()->setIconURL(KURL(m_url.string()));

    // Stylesheet
    else if(!m_isDisabled && (type.contains("text/css") || rel.contains("stylesheet")))
    {
        // no need to load style sheets which aren't for the screen output
        // ### there may be in some situations e.g. for an editor or script to manipulate
        if(m_media.isNull() || m_media.contains("screen") || m_media.contains("all") || m_media.contains("print"))
        {
            m_loading = true;
            // Add ourselves as a pending sheet, but only if we aren't an alternate
            // stylesheet.  Alternate stylesheets don't hold up render tree construction.
            m_alternate = rel.contains("alternate");
            if(!isAlternate())
                getDocument()->addPendingSheet();

            QString chset = getAttribute(ATTR_CHARSET).string();
            // set chset to charset of referring document when attribute CHARSET is absent.
            // http://www.w3.org/TR/CSS21/syndata.html(4.4)
            if(chset.isEmpty() && part)
                chset = part->encoding();
            if(m_cachedSheet)
                m_cachedSheet->deref(this);
            m_cachedSheet = getDocument()->docLoader()->requestStyleSheet(m_url, chset);
            if(m_cachedSheet)
            {
                m_isCSSSheet = true;
                m_cachedSheet->ref(this);
            }
            else if(!isAlternate())
            {
                // Error requesting sheet; decrement pending sheet count
                getDocument()->styleSheetLoaded();
            }
        }
    }
    else if(m_sheet)
    {
        // we no longer contain a stylesheet, e.g. perhaps rel or type was changed
        m_sheet->deref();
        m_sheet = 0;
        m_isCSSSheet = false;
        getDocument()->updateStyleSelector();
    }
}

static bool heightMediaFeatureEval(CSSValueImpl* value, RenderStyle* style, KHTMLPart* part,  MediaFeaturePrefix op)
{
    KHTMLPart* rootPart = part;
    while (rootPart->parentPart()) rootPart = rootPart->parentPart();
    DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl*>(rootPart->document().handle());
    QPaintDevice *pd = doc->paintDevice(); 
    bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
    int height;
    if (printing)
        height = pd->height();
    else {
        height = part->view()->visibleHeight();
        doc = static_cast<DOM::DocumentImpl*>(part->document().handle());
    }
    int logicalDpiY = doc->logicalDpiY();
    if (value)
        return value->isPrimitiveValue() && compareValue(height, static_cast<CSSPrimitiveValueImpl*>(value)->computeLength(style, logicalDpiY), op);

    return height > 0;
}

static bool device_widthMediaFeatureEval(CSSValueImpl* value, RenderStyle* style, KHTMLPart* part,  MediaFeaturePrefix op)
{
    if (value) {
        KHTMLPart* rootPart = part;
        while (rootPart->parentPart()) rootPart = rootPart->parentPart();
        DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl*>(rootPart->document().handle());
        QPaintDevice *pd = doc->paintDevice(); 
        bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
        int width;
        if (printing)
            width = pd->width();
        else {
            width = QApplication::desktop()->screen(QApplication::desktop()->screenNumber( rootPart->view() ))->rect().width();
            doc = static_cast<DOM::DocumentImpl*>(part->document().handle());
        }
        int logicalDpiY = doc->logicalDpiY();
        return value->isPrimitiveValue() && compareValue(width, static_cast<CSSPrimitiveValueImpl*>(value)->computeLength(style,logicalDpiY), op);
    }
    // ({,min-,max-}device-width)
    // assume if we have a device, assume non-zero
    return true;
}

static bool widthMediaFeatureEval(CSSValueImpl *value, RenderStyle *style, KHTMLPart *part,  MediaFeaturePrefix op)
{
    KHTMLPart *rootPart = part;
    while (rootPart->parentPart()) {
        rootPart = rootPart->parentPart();
    }
    DOM::DocumentImpl *doc =  static_cast<DOM::DocumentImpl *>(rootPart->document().handle());
    QPaintDevice *pd = doc->paintDevice();
    bool printing = pd ? (pd->devType() == QInternal::Printer) : false;
    int width;
    if (printing) {
        width = pd->width();
    } else {
        width = part->view()->visibleWidth();
        doc = static_cast<DOM::DocumentImpl *>(part->document().handle());
    }
    int logicalDpiY = doc->logicalDpiY();
    if (value) {
        return value->isPrimitiveValue() && compareValue(width, static_cast<CSSPrimitiveValueImpl *>(value)->computeLength(style, style, logicalDpiY), op);
    }

    return width > 0;
}