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Bug 1409975 - Implement node distribution for shadow tree slots

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* Implementation for assignedNodes
* Include slots in the flat tree
* Fix event get-the-parent algorithm for a node
* Update and add reftests for Shadow DOM v1
* Update web platform tests expectations

Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-17 07:10:54 -04:00 • committed by Roy Tam
commit cab78760e5
49 changed files with 775 additions and 429 deletions
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33
dom/base/ShadowRoot.h
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@ -21,6 +21,9 @@ class nsIContent;
class nsXBLPrototypeBinding;
namespace mozilla {
class EventChainPreVisitor;
namespace dom {
class Element;
@ -73,10 +76,26 @@ public:
private:
/**
* Redistributes a node of the pool, and returns whether the distribution
* Try to reassign an element to a slot and returns whether the assignment
* changed.
*/
bool RedistributeElement(Element*);
bool MaybeReassignElement(Element* aElement, const nsAttrValue* aOldValue);
/**
* Try to assign aContent to a slot in the shadow tree, returns the assigned
* slot if found.
*/
const HTMLSlotElement* AssignSlotFor(nsIContent* aContent);
/**
* Unassign aContent from the assigned slot in the shadow tree, returns the
* assigned slot if found.
*
* Note: slot attribute of aContent may have changed already, so pass slot
* name explicity here.
*/
const HTMLSlotElement* UnassignSlotFor(nsIContent* aContent,
const nsAString& aSlotName);
/**
* Called when we redistribute content after insertion points have changed.
@ -86,6 +105,9 @@ private:
bool IsPooledNode(nsIContent* aChild) const;
public:
void AddSlot(HTMLSlotElement* aSlot);
void RemoveSlot(HTMLSlotElement* aSlot);
void SetInsertionPointChanged() { mInsertionPointChanged = true; }
void SetAssociatedBinding(nsXBLBinding* aBinding) { mAssociatedBinding = aBinding; }
@ -113,11 +135,18 @@ public:
mIsComposedDocParticipant = aIsComposedDocParticipant;
}
nsresult GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
protected:
virtual ~ShadowRoot();
ShadowRootMode mMode;
// Map from name of slot to an array of all slots in the shadow DOM with with
// the given name. The slots are stored as a weak pointer because the elements
// are in the shadow tree and should be kept alive by its parent.
nsClassHashtable<nsStringHashKey, nsTArray<mozilla::dom::HTMLSlotElement*>> mSlotMap;
nsTHashtable<nsIdentifierMapEntry> mIdentifierMap;
nsXBLPrototypeBinding* mProtoBinding;