nsresult
HTMLImageElement::LoadSelectedImage(bool aForce, bool aNotify)
{
nsresult rv = NS_ERROR_FAILURE;
if (aForce) {
// In responsive mode we generally want to re-run the full
// selection algorithm whenever starting a new load, per
// spec. This also causes us to re-resolve the URI as appropriate.
UpdateResponsiveSource();
}
if (mResponsiveSelector) {
nsCOMPtr<nsIURI> url = mResponsiveSelector->GetSelectedImageURL();
rv = LoadImage(url, aForce, aNotify, eImageLoadType_Imageset);
} else {
nsAutoString src;
if (!GetAttr(kNameSpaceID_None, nsGkAtoms::src, src)) {
CancelImageRequests(aNotify);
rv = NS_OK;
} else {
// If we have a srcset attribute or are in a <picture> element,
// we always use the Imageset load type, even if we parsed no
// valid responsive sources from either, per spec.
rv = LoadImage(src, aForce, aNotify,
HaveSrcsetOrInPicture() ? eImageLoadType_Imageset
: eImageLoadType_Normal);
}
}
if (NS_FAILED(rv)) {
CancelImageRequests(aNotify);
}
return rv;
}
bool
HTMLImageElement::InResponsiveMode()
{
// When we lose srcset or leave a <picture> element, the fallback to img.src
// will happen from the microtask, and we should behave responsively in the
// interim
return mResponsiveSelector ||
mPendingImageLoadTask ||
HaveSrcsetOrInPicture();
}
nsresult
HTMLImageElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers)
{
nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
aBindingParent,
aCompileEventHandlers);
NS_ENSURE_SUCCESS(rv, rv);
nsImageLoadingContent::BindToTree(aDocument, aParent, aBindingParent,
aCompileEventHandlers);
if (aParent) {
UpdateFormOwner();
}
if (HaveSrcsetOrInPicture()) {
if (aDocument && !mInDocResponsiveContent) {
aDocument->AddResponsiveContent(this);
mInDocResponsiveContent = true;
}
bool forceLoadEvent = HTMLPictureElement::IsPictureEnabled() &&
aParent && aParent->IsHTMLElement(nsGkAtoms::picture);
QueueImageLoadTask(forceLoadEvent);
} else if (!InResponsiveMode() &&
HasAttr(kNameSpaceID_None, nsGkAtoms::src)) {
// We skip loading when our attributes were set from parser land,
// so trigger a aForce=false load now to check if things changed.
// This isn't necessary for responsive mode, since creating the
// image load task is asynchronous we don't need to take special
// care to avoid doing so when being filled by the parser.
// FIXME: Bug 660963 it would be nice if we could just have
// ClearBrokenState update our state and do it fast...
ClearBrokenState();
RemoveStatesSilently(NS_EVENT_STATE_BROKEN);
// We still act synchronously for the non-responsive case (Bug
// 1076583), but still need to delay if it is unsafe to run
// script.
// If loading is temporarily disabled, don't even launch MaybeLoadImage.
// Otherwise MaybeLoadImage may run later when someone has reenabled
// loading.
if (LoadingEnabled()) {
nsContentUtils::AddScriptRunner(
NS_NewRunnableMethod(this, &HTMLImageElement::MaybeLoadImage));
}
}
return rv;
}
