void ImageLoader::updateFromElement(UpdateFromElementBehavior updateBehavior,
ReferrerPolicy referrerPolicy) {
AtomicString imageSourceURL = m_element->imageSourceURL();
m_suppressErrorEvents = (updateBehavior == UpdateSizeChanged);
if (updateBehavior == UpdateIgnorePreviousError)
clearFailedLoadURL();
if (!m_failedLoadURL.isEmpty() && imageSourceURL == m_failedLoadURL)
return;
// Prevent the creation of a ResourceLoader (and therefore a network request)
// for ImageDocument loads. In this case, the image contents have already been
// requested as a main resource and ImageDocumentParser will take care of
// funneling the main resource bytes into m_image, so just create an
// ImageResource to be populated later.
if (m_loadingImageDocument && updateBehavior != UpdateForcedReload) {
setImage(
ImageResource::create(imageSourceToKURL(m_element->imageSourceURL())));
m_image->setStatus(Resource::Pending);
return;
}
// If we have a pending task, we have to clear it -- either we're now loading
// immediately, or we need to reset the task's state.
if (m_pendingTask) {
m_pendingTask->clearLoader();
m_pendingTask.reset();
}
KURL url = imageSourceToKURL(imageSourceURL);
if (shouldLoadImmediately(url)) {
doUpdateFromElement(DoNotBypassMainWorldCSP, updateBehavior, url,
referrerPolicy);
return;
}
// Allow the idiom "img.src=''; img.src='.." to clear down the image before an
// asynchronous load completes.
if (imageSourceURL.isEmpty()) {
ImageResource* image = m_image.get();
if (image) {
image->removeObserver(this);
}
m_image = nullptr;
}
// Don't load images for inactive documents. 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.isActive())
enqueueImageLoadingMicroTask(updateBehavior, referrerPolicy);
}
void ImageLoader::updateFromElement(UpdateFromElementBehavior updateBehavior)
{
AtomicString imageSourceURL = m_element->imageSourceURL();
m_suppressErrorEvents = (updateBehavior == UpdateSizeChanged);
if (updateBehavior == UpdateIgnorePreviousError)
clearFailedLoadURL();
if (!m_failedLoadURL.isEmpty() && imageSourceURL == m_failedLoadURL)
return;
// If we have a pending task, we have to clear it -- either we're
// now loading immediately, or we need to reset the task's state.
if (m_pendingTask) {
m_pendingTask->clearLoader();
m_pendingTask.clear();
}
KURL url = imageSourceToKURL(imageSourceURL);
if (shouldLoadImmediately(url)) {
doUpdateFromElement(DoNotBypassMainWorldCSP, updateBehavior);
return;
}
// Allow the idiom "img.src=''; img.src='.." to clear down the image before
// an asynchronous load completes.
if (imageSourceURL.isEmpty()) {
ImageResource* image = m_image.get();
if (image)
image->removeClient(this);
m_image = nullptr;
}
// Don't load images for inactive documents. 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.isActive())
enqueueImageLoadingMicroTask(updateBehavior);
}
void ImageLoader::updateFromElement(UpdateFromElementBehavior updateBehavior, LoadType loadType)
{
AtomicString imageSourceURL = m_element->imageSourceURL();
if (updateBehavior == UpdateIgnorePreviousError)
clearFailedLoadURL();
if (!m_failedLoadURL.isEmpty() && imageSourceURL == m_failedLoadURL)
return;
// If we have a pending task, we have to clear it -- either we're
// now loading immediately, or we need to reset the task's state.
if (m_pendingTask) {
m_pendingTask->clearLoader();
m_pendingTask.clear();
}
KURL url = imageSourceToKURL(imageSourceURL);
if (imageSourceURL.isNull() || url.isNull() || shouldLoadImmediately(url, loadType)) {
doUpdateFromElement(updateBehavior);
return;
}
enqueueImageLoadingMicroTask(updateBehavior);
}