C++ CachedImage::setDocLoader方法代码示例

void ImageLoader::updateFromElement()
{
    // If we're not making renderers for the page, then don't load images.  We don't want to slow
    // down the raw HTML parsing case by loading images we don't intend to display.
    Document* document = m_element->document();
    if (!document->renderer())
        return;

    AtomicString attr = m_element->getAttribute(m_element->imageSourceAttributeName());

    if (attr == m_failedLoadURL)
        return;

    // Do not load any image if the 'src' attribute is missing or if it is
    // an empty string referring to a local file. The latter condition is
    // a quirk that preserves old behavior that Dashboard widgets
    // need (<rdar://problem/5994621>).
    CachedImage* newImage = 0;
    if (!(attr.isNull() || (attr.isEmpty() && document->baseURI().isLocalFile()))) {
        if (m_loadManually) {
            document->docLoader()->setAutoLoadImages(false);
            newImage = new CachedImage(sourceURI(attr));
            newImage->setLoading(true);
            newImage->setDocLoader(document->docLoader());
            document->docLoader()->m_documentResources.set(newImage->url(), newImage);
        } else
            newImage = document->docLoader()->requestImage(sourceURI(attr));

        // If we do not have an image here, it means that a cross-site
        // violation occurred.
        m_failedLoadURL = !newImage ? attr : AtomicString();
    }
    
    CachedImage* oldImage = m_image.get();
    if (newImage != oldImage) {
        setLoadingImage(newImage);
        if (newImage) {
            newImage->addClient(this);
            if (!m_element->document()->hasListenerType(Document::BEFORELOAD_LISTENER))
                dispatchPendingBeforeLoadEvent();
            else
                beforeLoadEventSender().dispatchEventSoon(this);
        }
        if (oldImage)
            oldImage->removeClient(this);
    }

    if (RenderObject* renderer = m_element->renderer()) {
        if (!renderer->isImage())
            return;
        toRenderImage(renderer)->resetAnimation();
    }
}

void HTMLImageLoader::updateFromElement()
{
    // If we're not making renderers for the page, then don't load images.  We don't want to slow
    // down the raw HTML parsing case by loading images we don't intend to display.
    Element* elem = element();
    Document* doc = elem->document();
    if (!doc->renderer())
        return;

    AtomicString attr = elem->getAttribute(elem->imageSourceAttributeName());
    
    // Do not load any image if the 'src' attribute is missing or if it is
    // an empty string referring to a local file. The latter condition is
    // a quirk that preserves old behavior that Dashboard widgets
    // need (<rdar://problem/5994621>).
    CachedImage *newImage = 0;
    if (!(attr.isNull() || attr.isEmpty() && doc->baseURI().isLocalFile())) {
        if (m_loadManually) {
            doc->docLoader()->setAutoLoadImages(false);
            newImage = new CachedImage(parseURL(attr));
            newImage->setLoading(true);
            newImage->setDocLoader(doc->docLoader());
            doc->docLoader()->m_docResources.set(newImage->url(), newImage);
        } else
            newImage = doc->docLoader()->requestImage(parseURL(attr));
    }
    
    CachedImage *oldImage = m_image;
    if (newImage != oldImage) {
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
        if (!doc->ownerElement() && newImage)
           OWB_PRINTF("Image requested at %d\n", doc->elapsedTime());
#endif
        setLoadingImage(newImage);
        if (newImage)
            newImage->addClient(this);
        if (oldImage)
            oldImage->removeClient(this);
    }

    if (RenderObject* renderer = elem->renderer())
        if (renderer->isImage())
            static_cast<RenderImage*>(renderer)->resetAnimation();
}

void HTMLImageLoader::updateFromElement()
{
    // If we're not making renderers for the page, then don't load images.  We don't want to slow
    // down the raw HTML parsing case by loading images we don't intend to display.
    Element* elem = element();
    Document* doc = elem->document();
    if (!doc->renderer())
        return;

    AtomicString attr = elem->getAttribute(elem->hasLocalName(objectTag) ? dataAttr : srcAttr);
    
    // Treat a lack of src or empty string for src as no image at all.
    CachedImage *newImage = 0;
    if (!attr.isEmpty()) {
        if (m_loadManually) {
            doc->docLoader()->setAutoLoadImages(false);
            newImage = new CachedImage(doc->docLoader(), parseURL(attr), false /* not for cache */);
            newImage->setLoading(true);
            newImage->setDocLoader(doc->docLoader());
            doc->docLoader()->m_docResources.set(newImage->url(), newImage);
        } else
            newImage = doc->docLoader()->requestImage(parseURL(attr));
    }
    
    CachedImage *oldImage = m_image;
    if (newImage != oldImage) {
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
        if (!doc->ownerElement() && newImage)
            printf("Image requested at %d\n", doc->elapsedTime());
#endif
        setLoadingImage(newImage);
        if (newImage)
            newImage->ref(this);
        if (oldImage)
            oldImage->deref(this);
    }

    if (RenderObject* renderer = elem->renderer())
        if (renderer->isImage())
            static_cast<RenderImage*>(renderer)->resetAnimation();
}