void ImageLoader::updateRenderer()
{
RenderImageResource* imageResource = renderImageResource();
if (!imageResource)
return;
// Only update the renderer if it doesn't have an image or if what we have
// is a complete image. This prevents flickering in the case where a dynamic
// change is happening between two images.
CachedImage* cachedImage = imageResource->cachedImage();
if (m_image != cachedImage && (m_imageComplete || !cachedImage))
imageResource->setCachedImage(m_image.get());
}
void ImageLoader::setImage(CachedImage* newImage)
{
ASSERT(m_failedLoadURL.isEmpty());
CachedImage* oldImage = m_image.get();
if (newImage != oldImage) {
m_image = newImage;
if (!m_firedBeforeLoad) {
beforeLoadEventSender().cancelEvent(this);
m_firedBeforeLoad = true;
}
if (!m_firedLoad) {
loadEventSender().cancelEvent(this);
m_firedLoad = true;
}
m_imageComplete = true;
if (newImage)
newImage->addClient(this);
if (oldImage)
oldImage->removeClient(this);
}
if (RenderImageResource* imageResource = renderImageResource())
imageResource->resetAnimation();
}
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->imageSourceURL();
if (attr == m_failedLoadURL)
return;
// Do not load any image if the 'src' attribute is missing or if it is
// an empty string.
CachedResourceHandle<CachedImage> newImage = 0;
if (!attr.isNull() && !stripLeadingAndTrailingHTMLSpaces(attr).isEmpty()) {
CachedResourceRequest request(ResourceRequest(document->completeURL(sourceURI(attr))));
request.setInitiator(element());
String crossOriginMode = m_element->fastGetAttribute(HTMLNames::crossoriginAttr);
if (!crossOriginMode.isNull()) {
StoredCredentials allowCredentials = equalIgnoringCase(crossOriginMode, "use-credentials") ? AllowStoredCredentials : DoNotAllowStoredCredentials;
updateRequestForAccessControl(request.mutableResourceRequest(), document->securityOrigin(), allowCredentials);
}
if (m_loadManually) {
bool autoLoadOtherImages = document->cachedResourceLoader()->autoLoadImages();
document->cachedResourceLoader()->setAutoLoadImages(false);
newImage = new CachedImage(request.resourceRequest());
newImage->setLoading(true);
newImage->setOwningCachedResourceLoader(document->cachedResourceLoader());
document->cachedResourceLoader()->m_documentResources.set(newImage->url(), newImage.get());
document->cachedResourceLoader()->setAutoLoadImages(autoLoadOtherImages);
} else
newImage = document->cachedResourceLoader()->requestImage(request);
// If we do not have an image here, it means that a cross-site
// violation occurred, or that the image was blocked via Content
// Security Policy, or the page is being dismissed. Trigger an
// error event if the page is not being dismissed.
if (!newImage && !pageIsBeingDismissed(document)) {
m_failedLoadURL = attr;
m_hasPendingErrorEvent = true;
errorEventSender().dispatchEventSoon(this);
} else
clearFailedLoadURL();
} else if (!attr.isNull()) {
// Fire an error event if the url is empty.
// FIXME: Should we fire this event asynchronoulsy via errorEventSender()?
m_element->dispatchEvent(Event::create(eventNames().errorEvent, false, false));
}
CachedImage* oldImage = m_image.get();
if (newImage != oldImage) {
if (m_hasPendingBeforeLoadEvent) {
beforeLoadEventSender().cancelEvent(this);
m_hasPendingBeforeLoadEvent = false;
}
if (m_hasPendingLoadEvent) {
loadEventSender().cancelEvent(this);
m_hasPendingLoadEvent = false;
}
// Cancel error events that belong to the previous load, which is now cancelled by changing the src attribute.
// If newImage is null and m_hasPendingErrorEvent is true, we know the error event has been just posted by
// this load and we should not cancel the event.
// FIXME: If both previous load and this one got blocked with an error, we can receive one error event instead of two.
if (m_hasPendingErrorEvent && newImage) {
errorEventSender().cancelEvent(this);
m_hasPendingErrorEvent = false;
}
m_image = newImage;
m_hasPendingBeforeLoadEvent = !m_element->document()->isImageDocument() && newImage;
m_hasPendingLoadEvent = newImage;
m_imageComplete = !newImage;
if (newImage) {
if (!m_element->document()->isImageDocument()) {
if (!m_element->document()->hasListenerType(Document::BEFORELOAD_LISTENER))
dispatchPendingBeforeLoadEvent();
else
beforeLoadEventSender().dispatchEventSoon(this);
} else
updateRenderer();
// If newImage is cached, addClient() will result in the load event
// being queued to fire. Ensure this happens after beforeload is
// dispatched.
newImage->addClient(this);
}
if (oldImage)
oldImage->removeClient(this);
}
if (RenderImageResource* imageResource = renderImageResource())
imageResource->resetAnimation();
// Only consider updating the protection ref-count of the Element immediately before returning
// from this function as doing so might result in the destruction of this ImageLoader.
updatedHasPendingEvent();
}
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) {
bool autoLoadOtherImages = document->docLoader()->autoLoadImages();
document->docLoader()->setAutoLoadImages(false);
newImage = new CachedImage(sourceURI(attr));
newImage->setLoading(true);
newImage->setDocLoader(document->docLoader());
document->docLoader()->m_documentResources.set(newImage->url(), newImage);
document->docLoader()->setAutoLoadImages(autoLoadOtherImages);
} 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) {
if (!m_firedBeforeLoad)
beforeLoadEventSender().cancelEvent(this);
if (!m_firedLoad)
loadEventSender().cancelEvent(this);
m_image = newImage;
m_firedBeforeLoad = !newImage;
m_firedLoad = !newImage;
m_imageComplete = !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 (RenderImageResource* imageResource = renderImageResource())
imageResource->resetAnimation();
}
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.
CachedImage* newImage = 0;
if (!attr.isNull() && !stripLeadingAndTrailingHTMLSpaces(attr).isEmpty()) {
ResourceRequest request = ResourceRequest(document->completeURL(sourceURI(attr)));
String crossOriginMode = m_element->fastGetAttribute(HTMLNames::crossoriginAttr);
if (!crossOriginMode.isNull()) {
StoredCredentials allowCredentials = equalIgnoringCase(crossOriginMode, "use-credentials") ? AllowStoredCredentials : DoNotAllowStoredCredentials;
updateRequestForAccessControl(request, document->securityOrigin(), allowCredentials);
}
if (m_loadManually) {
bool autoLoadOtherImages = document->cachedResourceLoader()->autoLoadImages();
document->cachedResourceLoader()->setAutoLoadImages(false);
newImage = new CachedImage(request);
newImage->setLoading(true);
newImage->setOwningCachedResourceLoader(document->cachedResourceLoader());
document->cachedResourceLoader()->m_documentResources.set(newImage->url(), newImage);
document->cachedResourceLoader()->setAutoLoadImages(autoLoadOtherImages);
} else
newImage = document->cachedResourceLoader()->requestImage(request);
// If we do not have an image here, it means that a cross-site
// violation occurred.
m_failedLoadURL = !newImage ? attr : AtomicString();
} else if (!attr.isNull()) // Fire an error event if the url is empty.
m_element->dispatchEvent(Event::create(eventNames().errorEvent, false, false));
CachedImage* oldImage = m_image.get();
if (newImage != oldImage) {
if (!m_firedBeforeLoad)
beforeLoadEventSender().cancelEvent(this);
if (!m_firedLoad)
loadEventSender().cancelEvent(this);
m_image = newImage;
m_firedBeforeLoad = !newImage;
m_firedLoad = !newImage;
m_imageComplete = !newImage;
if (newImage) {
if (!m_element->document()->hasListenerType(Document::BEFORELOAD_LISTENER))
dispatchPendingBeforeLoadEvent();
else
beforeLoadEventSender().dispatchEventSoon(this);
// If newImage is cached, addClient() will result in the load event
// being queued to fire. Ensure this happens after beforeload is
// dispatched.
newImage->addClient(this);
}
if (oldImage)
oldImage->removeClient(this);
}
if (RenderImageResource* imageResource = renderImageResource())
imageResource->resetAnimation();
}
void ImageLoader::doUpdateFromElement(UpdateFromElementBehavior updateBehavior)
{
// FIXME: According to
// http://www.whatwg.org/specs/web-apps/current-work/multipage/embedded-content.html#the-img-element:the-img-element-55
// When "update image" is called due to environment changes and the load fails, onerror should not be called.
// That is currently not the case.
//
// We don't need to call clearLoader here: Either we were called from the
// task, or our caller updateFromElement cleared the task's loader (and set
// m_pendingTask to null).
m_pendingTask.clear();
// Make sure to only decrement the count when we exit this function
OwnPtr<IncrementLoadEventDelayCount> loadDelayCounter;
loadDelayCounter.swap(m_loadDelayCounter);
Document& document = m_element->document();
if (!document.isActive())
return;
AtomicString imageSourceURL = m_element->imageSourceURL();
KURL url = imageSourceToKURL(imageSourceURL);
ResourcePtr<ImageResource> newImage = 0;
if (!url.isNull()) {
// Unlike raw <img>, we block mixed content inside of <picture> or <img srcset>.
ResourceLoaderOptions resourceLoaderOptions = ResourceFetcher::defaultResourceOptions();
ResourceRequest resourceRequest(url);
FetchRequest request(ResourceRequest(url), element()->localName(), resourceLoaderOptions);
newImage = document.fetcher()->fetchImage(request);
if (!newImage && !pageIsBeingDismissed(&document))
crossSiteOrCSPViolationOccured(imageSourceURL);
else
clearFailedLoadURL();
} else if (!imageSourceURL.isNull()) {
// Fire an error event if the url string is not empty, but the KURL is.
m_hasPendingErrorEvent = true;
errorEventSender().dispatchEventSoon(this);
}
ImageResource* oldImage = m_image.get();
if (newImage != oldImage) {
sourceImageChanged();
if (m_hasPendingLoadEvent) {
loadEventSender().cancelEvent(this);
m_hasPendingLoadEvent = false;
}
// Cancel error events that belong to the previous load, which is now cancelled by changing the src attribute.
// If newImage is null and m_hasPendingErrorEvent is true, we know the error event has been just posted by
// this load and we should not cancel the event.
// FIXME: If both previous load and this one got blocked with an error, we can receive one error event instead of two.
if (m_hasPendingErrorEvent && newImage) {
errorEventSender().cancelEvent(this);
m_hasPendingErrorEvent = false;
}
m_image = newImage;
m_hasPendingLoadEvent = newImage;
m_imageComplete = !newImage;
updateRenderer();
// If newImage exists and is cached, addClient() will result in the load event
// being queued to fire. Ensure this happens after beforeload is dispatched.
if (newImage)
newImage->addClient(this);
if (oldImage)
oldImage->removeClient(this);
} else if (updateBehavior == UpdateSizeChanged && m_element->renderer() && m_element->renderer()->isImage()) {
toRenderImage(m_element->renderer())->intrinsicSizeChanged();
}
if (RenderImageResource* imageResource = renderImageResource())
imageResource->resetAnimation();
// Only consider updating the protection ref-count of the Element immediately before returning
// from this function as doing so might result in the destruction of this ImageLoader.
updatedHasPendingEvent();
}
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;
// CAPPFIX_WEB_IMG_SRC_NULL
#if 1
if (!attr.isNull() && !stripLeadingAndTrailingHTMLSpaces(attr).isEmpty()) {
#else
if (!(attr.isNull() || (attr.isEmpty() && document->baseURI().isLocalFile()))) {
#endif
ResourceRequest request = ResourceRequest(document->completeURL(sourceURI(attr)));
String crossOriginMode = m_element->fastGetAttribute(HTMLNames::crossoriginAttr);
if (!crossOriginMode.isNull()) {
bool allowCredentials = equalIgnoringCase(crossOriginMode, "use-credentials");
updateRequestForAccessControl(request, document->securityOrigin(), allowCredentials);
}
if (m_loadManually) {
bool autoLoadOtherImages = document->cachedResourceLoader()->autoLoadImages();
document->cachedResourceLoader()->setAutoLoadImages(false);
newImage = new CachedImage(request);
newImage->setLoading(true);
newImage->setOwningCachedResourceLoader(document->cachedResourceLoader());
document->cachedResourceLoader()->m_documentResources.set(newImage->url(), newImage);
document->cachedResourceLoader()->setAutoLoadImages(autoLoadOtherImages);
} else
newImage = document->cachedResourceLoader()->requestImage(request);
// If we do not have an image here, it means that a cross-site
// violation occurred.
m_failedLoadURL = !newImage ? attr : AtomicString();
// CAPPFIX_WEB_IMG_SRC_NULL
#if 1
} else if (!attr.isNull()) // Fire an error event if the url is empty.
m_element->dispatchEvent(Event::create(eventNames().errorEvent, false, false));
#else
}
#endif
CachedImage* oldImage = m_image.get();
if (newImage != oldImage) {
if (!m_firedBeforeLoad)
beforeLoadEventSender().cancelEvent(this);
if (!m_firedLoad)
loadEventSender().cancelEvent(this);
m_image = newImage;
m_firedBeforeLoad = !newImage;
m_firedLoad = !newImage;
m_imageComplete = !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 (RenderImageResource* imageResource = renderImageResource())
imageResource->resetAnimation();
}
