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-rw-r--r--dom/base/ShadowRoot.h155
1 files changed, 60 insertions, 95 deletions
diff --git a/dom/base/ShadowRoot.h b/dom/base/ShadowRoot.h
index f84078134..a24c8138e 100644
--- a/dom/base/ShadowRoot.h
+++ b/dom/base/ShadowRoot.h
@@ -8,8 +8,7 @@
#define mozilla_dom_shadowroot_h__
#include "mozilla/dom/DocumentFragment.h"
-#include "mozilla/dom/StyleSheetList.h"
-#include "mozilla/StyleSheet.h"
+#include "mozilla/dom/StyleScope.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIContentInlines.h"
@@ -21,17 +20,17 @@ class nsIContent;
class nsXBLPrototypeBinding;
namespace mozilla {
+
+class EventChainPreVisitor;
+
namespace dom {
class Element;
-class HTMLContentElement;
-class HTMLShadowElement;
-class ShadowRootStyleSheetList;
class ShadowRoot final : public DocumentFragment,
+ public StyleScope,
public nsStubMutationObserver
{
- friend class ShadowRootStyleSheetList;
public:
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ShadowRoot,
DocumentFragment)
@@ -42,76 +41,86 @@ public:
NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
- ShadowRoot(nsIContent* aContent, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+ ShadowRoot(Element* aElement, bool aClosed,
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
nsXBLPrototypeBinding* aProtoBinding);
+ // Shadow DOM v1
+ Element* Host();
+ ShadowRootMode Mode() const
+ {
+ return mMode;
+ }
+ bool IsClosed() const
+ {
+ return mMode == ShadowRootMode::Closed;
+ }
+
+ // StyleScope.
+ nsINode& AsNode() final
+ {
+ return *this;
+ }
+
+ // [deprecated] Shadow DOM v0
void AddToIdTable(Element* aElement, nsIAtom* aId);
void RemoveFromIdTable(Element* aElement, nsIAtom* aId);
void InsertSheet(StyleSheet* aSheet, nsIContent* aLinkingContent);
void RemoveSheet(StyleSheet* aSheet);
bool ApplyAuthorStyles();
void SetApplyAuthorStyles(bool aApplyAuthorStyles);
- StyleSheetList* StyleSheets();
- HTMLShadowElement* GetShadowElement() { return mShadowElement; }
+ StyleSheetList* StyleSheets()
+ {
+ return &StyleScope::EnsureDOMStyleSheets();
+ }
/**
- * Sets the current shadow insertion point where the older
- * ShadowRoot will be projected.
+ * Distributes all the explicit children of the pool host to the content
+ * insertion points in this ShadowRoot.
*/
- void SetShadowElement(HTMLShadowElement* aShadowElement);
+ void DistributeAllNodes();
+private:
/**
- * Change the node that populates the distribution pool with
- * its children. This is distinct from the ShadowRoot host described
- * in the specifications. The ShadowRoot host is the element
- * which created this ShadowRoot and does not change. The pool host
- * is the same as the ShadowRoot host if this is the youngest
- * ShadowRoot. If this is an older ShadowRoot, the pool host is
- * the <shadow> element in the younger ShadowRoot (if it exists).
+ * Try to reassign an element to a slot and returns whether the assignment
+ * changed.
*/
- void ChangePoolHost(nsIContent* aNewHost);
+ bool MaybeReassignElement(Element* aElement, const nsAttrValue* aOldValue);
/**
- * Distributes a single explicit child of the pool host to the content
- * insertion points in this ShadowRoot.
+ * Try to assign aContent to a slot in the shadow tree, returns the assigned
+ * slot if found.
*/
- void DistributeSingleNode(nsIContent* aContent);
+ const HTMLSlotElement* AssignSlotFor(nsIContent* aContent);
/**
- * Removes a single explicit child of the pool host from the content
- * insertion points in this ShadowRoot.
+ * 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.
*/
- void RemoveDistributedNode(nsIContent* aContent);
+ const HTMLSlotElement* UnassignSlotFor(nsIContent* aContent,
+ const nsAString& aSlotName);
/**
- * Distributes all the explicit children of the pool host to the content
- * insertion points in this ShadowRoot.
+ * Called when we redistribute content after insertion points have changed.
*/
- void DistributeAllNodes();
+ void DistributionChanged();
- void AddInsertionPoint(HTMLContentElement* aInsertionPoint);
- void RemoveInsertionPoint(HTMLContentElement* aInsertionPoint);
+ bool IsPooledNode(nsIContent* aChild) const;
+
+public:
+ void AddSlot(HTMLSlotElement* aSlot);
+ void RemoveSlot(HTMLSlotElement* aSlot);
- void SetYoungerShadow(ShadowRoot* aYoungerShadow);
- ShadowRoot* GetYoungerShadowRoot() { return mYoungerShadow; }
void SetInsertionPointChanged() { mInsertionPointChanged = true; }
void SetAssociatedBinding(nsXBLBinding* aBinding) { mAssociatedBinding = aBinding; }
- nsISupports* GetParentObject() const { return mPoolHost; }
-
- nsIContent* GetPoolHost() { return mPoolHost; }
- nsTArray<HTMLShadowElement*>& ShadowDescendants() { return mShadowDescendants; }
-
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
- static bool IsPooledNode(nsIContent* aChild, nsIContent* aContainer,
- nsIContent* aHost);
static ShadowRoot* FromNode(nsINode* aNode);
- static bool IsShadowInsertionPoint(nsIContent* aContent);
-
- static void RemoveDestInsertionPoint(nsIContent* aInsertionPoint,
- nsTArray<nsIContent*>& aDestInsertionPoints);
// WebIDL methods.
Element* GetElementById(const nsAString& aElementId);
@@ -124,8 +133,6 @@ public:
GetElementsByClassName(const nsAString& aClasses);
void GetInnerHTML(nsAString& aInnerHTML);
void SetInnerHTML(const nsAString& aInnerHTML, ErrorResult& aError);
- Element* Host();
- ShadowRoot* GetOlderShadowRoot() { return mOlderShadow; }
void StyleSheetChanged();
bool IsComposedDocParticipant() { return mIsComposedDocParticipant; }
@@ -134,24 +141,17 @@ public:
mIsComposedDocParticipant = aIsComposedDocParticipant;
}
- virtual void DestroyContent() override;
+ nsresult GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
+
protected:
virtual ~ShadowRoot();
- // The pool host is the parent of the nodes that will be distributed
- // into the insertion points in this ShadowRoot. See |ChangeShadowRoot|.
- nsCOMPtr<nsIContent> mPoolHost;
-
- // An array of content insertion points that are a descendant of the ShadowRoot
- // sorted in tree order. Insertion points are responsible for notifying
- // the ShadowRoot when they are removed or added as a descendant. The insertion
- // points are kept alive by the parent node, thus weak references are held
- // by the array.
- nsTArray<HTMLContentElement*> mInsertionPoints;
+ ShadowRootMode mMode;
- // An array of the <shadow> elements that are descendant of the ShadowRoot
- // sorted in tree order. Only the first may be a shadow insertion point.
- nsTArray<HTMLShadowElement*> mShadowDescendants;
+ // 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;
@@ -161,19 +161,6 @@ protected:
// owns |mProtoBinding|.
RefPtr<nsXBLBinding> mAssociatedBinding;
- RefPtr<ShadowRootStyleSheetList> mStyleSheetList;
-
- // The current shadow insertion point of this ShadowRoot.
- HTMLShadowElement* mShadowElement;
-
- // The ShadowRoot that was created by the host element before
- // this ShadowRoot was created.
- RefPtr<ShadowRoot> mOlderShadow;
-
- // The ShadowRoot that was created by the host element after
- // this ShadowRoot was created.
- RefPtr<ShadowRoot> mYoungerShadow;
-
// A boolean that indicates that an insertion point was added or removed
// from this ShadowRoot and that the nodes need to be redistributed into
// the insertion points. After this flag is set, nodes will be distributed
@@ -189,28 +176,6 @@ protected:
nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override;
};
-class ShadowRootStyleSheetList : public StyleSheetList
-{
-public:
- explicit ShadowRootStyleSheetList(ShadowRoot* aShadowRoot);
-
- NS_DECL_ISUPPORTS_INHERITED
- NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ShadowRootStyleSheetList, StyleSheetList)
-
- virtual nsINode* GetParentObject() const override
- {
- return mShadowRoot;
- }
-
- uint32_t Length() override;
- StyleSheet* IndexedGetter(uint32_t aIndex, bool& aFound) override;
-
-protected:
- virtual ~ShadowRootStyleSheetList();
-
- RefPtr<ShadowRoot> mShadowRoot;
-};
-
} // namespace dom
} // namespace mozilla
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-19 08:10:30 +0000