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HTML - implement the labels attribute

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This commit is contained in:
janekptacijarabaci 2017-08-18 06:04:15 +02:00 • committed by Roy Tam
commit 5b24f05ce7
25 changed files with 516 additions and 95 deletions
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40
dom/html/nsGenericHTMLElement.cpp
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@ -108,6 +108,7 @@
#include "mozilla/StyleSetHandle.h"
#include "mozilla/StyleSetHandleInlines.h"
#include "ReferrerPolicy.h"
#include "mozilla/dom/HTMLLabelElement.h"
using namespace mozilla;
using namespace mozilla::dom;
@ -493,6 +494,14 @@ nsGenericHTMLElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
}
}
// We need to consider a labels element is moved to another subtree
// with different root, it needs to update labels list and its root
// as well.
nsDOMSlots* slots = GetExistingDOMSlots();
if (slots && slots->mLabelsList) {
slots->mLabelsList->MaybeResetRoot(SubtreeRoot());
}
return rv;
}
@ -513,6 +522,13 @@ nsGenericHTMLElement::UnbindFromTree(bool aDeep, bool aNullParent)
}
}
// We need to consider a labels element is removed from tree,
// it needs to update labels list and its root as well.
nsDOMSlots* slots = GetExistingDOMSlots();
if (slots && slots->mLabelsList) {
slots->mLabelsList->MaybeResetRoot(SubtreeRoot());
}
nsStyledElement::UnbindFromTree(aDeep, aNullParent);
}
@ -1701,6 +1717,30 @@ nsGenericHTMLElement::IsLabelable() const
return IsAnyOfHTMLElements(nsGkAtoms::progress, nsGkAtoms::meter);
}
/* static */ bool
nsGenericHTMLElement::MatchLabelsElement(Element* aElement, int32_t aNamespaceID,
nsIAtom* aAtom, void* aData)
{
HTMLLabelElement* element = HTMLLabelElement::FromContent(aElement);
return element && element->GetControl() == aData;
}
already_AddRefed<nsINodeList>
nsGenericHTMLElement::Labels()
{
MOZ_ASSERT(IsLabelable(),
"Labels() only allow labelable elements to use it.");
nsDOMSlots* slots = DOMSlots();
if (!slots->mLabelsList) {
slots->mLabelsList = new nsLabelsNodeList(SubtreeRoot(), MatchLabelsElement,
nullptr, this);
}
RefPtr<nsLabelsNodeList> labels = slots->mLabelsList;
return labels.forget();
}
bool
nsGenericHTMLElement::IsInteractiveHTMLContent(bool aIgnoreTabindex) const
{