void
HTMLImageElement::PictureSourceSizesChanged(nsIContent *aSourceNode,
const nsAString& aNewValue,
bool aNotify)
{
if (!HTMLPictureElement::IsPictureEnabled()) {
return;
}
MOZ_ASSERT(aSourceNode == this ||
IsPreviousSibling(aSourceNode, this),
"Should not be getting notifications for non-previous-siblings");
nsIContent *currentSrc =
mResponsiveSelector ? mResponsiveSelector->Content() : nullptr;
if (aSourceNode == currentSrc) {
// We're currently using this node as our responsive selector
// source.
mResponsiveSelector->SetSizesFromDescriptor(aNewValue);
}
// This always triggers the image update steps per the spec, even if
// we are not using this source.
QueueImageLoadTask(true);
}
void
HTMLImageElement::UnbindFromTree(bool aDeep, bool aNullParent)
{
if (mForm) {
if (aNullParent || !FindAncestorForm(mForm)) {
ClearForm(true);
} else {
UnsetFlags(MAYBE_ORPHAN_FORM_ELEMENT);
}
}
if (mInDocResponsiveContent) {
nsIDocument* doc = GetOurOwnerDoc();
MOZ_ASSERT(doc);
if (doc) {
doc->RemoveResponsiveContent(this);
mInDocResponsiveContent = false;
}
}
if (GetParent() &&
GetParent()->IsHTMLElement(nsGkAtoms::picture) &&
HTMLPictureElement::IsPictureEnabled()) {
// Being removed from picture re-triggers selection, even if we
// weren't using a <source> peer
if (aNullParent) {
QueueImageLoadTask(true);
}
}
nsImageLoadingContent::UnbindFromTree(aDeep, aNullParent);
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
}
void
HTMLImageElement::PictureSourceRemoved(nsIContent *aSourceNode)
{
if (!HTMLPictureElement::IsPictureEnabled()) {
return;
}
QueueImageLoadTask(true);
}
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;
}
nsresult
HTMLImageElement::SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
nsIAtom* aPrefix, const nsAString& aValue,
bool aNotify)
{
// We need to force our image to reload. This must be done here, not in
// AfterSetAttr or BeforeSetAttr, because we want to do it even if the attr is
// being set to its existing value, which is normally optimized away as a
// no-op.
//
// If we are in responsive mode, we drop the forced reload behavior,
// but still trigger a image load task for img.src = img.src per
// spec.
//
// Both cases handle unsetting src in AfterSetAttr
if (aNameSpaceID == kNameSpaceID_None &&
aName == nsGkAtoms::src) {
// This is for dom.disable_image_src_set, which predates "srcset"
// as an attribute. See Bug 773429
if (nsContentUtils::IsImageSrcSetDisabled()) {
return NS_OK;
}
if (InResponsiveMode()) {
if (mResponsiveSelector &&
mResponsiveSelector->Content() == this) {
mResponsiveSelector->SetDefaultSource(aValue);
}
QueueImageLoadTask(true);
} else if (aNotify) {
// If aNotify is false, we are coming from the parser or some such place;
// we'll get bound after all the attributes have been set, so we'll do the
// sync image load from BindToTree. Skip the LoadImage call in that case.
// Note that this sync behavior is partially removed from the spec, bug 1076583
// A hack to get animations to reset. See bug 594771.
mNewRequestsWillNeedAnimationReset = true;
// Force image loading here, so that we'll try to load the image from
// network if it's set to be not cacheable... If we change things so that
// the state gets in Element's attr-setting happen around this
// LoadImage call, we could start passing false instead of aNotify
// here.
LoadImage(aValue, true, aNotify, eImageLoadType_Normal);
mNewRequestsWillNeedAnimationReset = false;
}
}
return nsGenericHTMLElement::SetAttr(aNameSpaceID, aName, aPrefix, aValue,
aNotify);
}
void
HTMLImageElement::PictureSourceMediaOrTypeChanged(nsIContent *aSourceNode,
bool aNotify)
{
if (!HTMLPictureElement::IsPictureEnabled()) {
return;
}
MOZ_ASSERT(IsPreviousSibling(aSourceNode, this),
"Should not be getting notifications for non-previous-siblings");
// This always triggers the image update steps per the spec, even if
// we are not switching to/from this source
QueueImageLoadTask(true);
}
void
HTMLImageElement::UnbindFromTree(bool aDeep, bool aNullParent)
{
if (mForm) {
if (aNullParent || !FindAncestorForm(mForm)) {
ClearForm(true);
} else {
UnsetFlags(MAYBE_ORPHAN_FORM_ELEMENT);
}
}
if (aNullParent &&
nsINode::GetParentNode()->Tag() == nsGkAtoms::picture &&
HTMLPictureElement::IsPictureEnabled()) {
// Being removed from picture re-triggers selection, even if we
// weren't using a <source> peer
QueueImageLoadTask();
}
nsImageLoadingContent::UnbindFromTree(aDeep, aNullParent);
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
}
void
HTMLImageElement::PictureSourceSrcsetChanged(nsIContent *aSourceNode,
const nsAString& aNewValue,
bool aNotify)
{
bool isSelf = aSourceNode == this;
if (!IsSrcsetEnabled() ||
(!isSelf && !HTMLPictureElement::IsPictureEnabled())) {
return;
}
MOZ_ASSERT(isSelf || IsPreviousSibling(aSourceNode, this),
"Should not be getting notifications for non-previous-siblings");
nsIContent *currentSrc =
mResponsiveSelector ? mResponsiveSelector->Content() : nullptr;
if (aSourceNode == currentSrc) {
// We're currently using this node as our responsive selector
// source.
mResponsiveSelector->SetCandidatesFromSourceSet(aNewValue);
}
if (!mInDocResponsiveContent) {
nsIDocument* doc = GetOurOwnerDoc();
if (doc) {
doc->AddResponsiveContent(this);
mInDocResponsiveContent = true;
}
}
// This always triggers the image update steps per the spec, even if
// we are not using this source.
QueueImageLoadTask(true);
}
nsresult
HTMLImageElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
const nsAttrValue* aValue, bool aNotify)
{
if (aNameSpaceID == kNameSpaceID_None && mForm &&
(aName == nsGkAtoms::name || aName == nsGkAtoms::id) &&
aValue && !aValue->IsEmptyString()) {
// add the image to the hashtable as needed
MOZ_ASSERT(aValue->Type() == nsAttrValue::eAtom,
"Expected atom value for name/id");
mForm->AddImageElementToTable(this,
nsDependentAtomString(aValue->GetAtomValue()));
}
// Handle src/srcset/crossorigin updates. If aNotify is false, we are coming
// from the parser or some such place; we'll get bound after all the
// attributes have been set, so we'll do the image load from BindToTree.
nsAttrValueOrString attrVal(aValue);
if (aName == nsGkAtoms::src &&
aNameSpaceID == kNameSpaceID_None &&
!aValue) {
// SetAttr handles setting src since it needs to catch img.src =
// img.src, so we only need to handle the unset case
if (InResponsiveMode()) {
if (mResponsiveSelector &&
mResponsiveSelector->Content() == this) {
mResponsiveSelector->SetDefaultSource(NullString());
}
QueueImageLoadTask(true);
} else {
// Bug 1076583 - We still behave synchronously in the non-responsive case
CancelImageRequests(aNotify);
}
} else if (aName == nsGkAtoms::srcset &&
aNameSpaceID == kNameSpaceID_None &&
IsSrcsetEnabled()) {
PictureSourceSrcsetChanged(this, attrVal.String(), aNotify);
} else if (aName == nsGkAtoms::sizes &&
aNameSpaceID == kNameSpaceID_None &&
HTMLPictureElement::IsPictureEnabled()) {
PictureSourceSizesChanged(this, attrVal.String(), aNotify);
} else if (aName == nsGkAtoms::crossorigin &&
aNameSpaceID == kNameSpaceID_None &&
aNotify) {
// Force a new load of the image with the new cross origin policy.
if (InResponsiveMode()) {
// per spec, full selection runs when this changes, even though
// it doesn't directly affect the source selection
QueueImageLoadTask(true);
} else {
// Bug 1076583 - We still use the older synchronous algorithm in
// non-responsive mode. Force a new load of the image with the
// new cross origin policy.
ForceReload(aNotify);
}
}
return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName,
aValue, aNotify);
}
void
HTMLImageElement::MediaFeatureValuesChanged()
{
QueueImageLoadTask(false);
}