A shadow tree is a node tree whose root is a shadow root. +
A shadow root is always connected to another node tree through its +host. A shadow tree is therefore never alone. The +node tree of a shadow root's host is sometimes +referred to as the light tree.
+A {{DocumentFragment}} node can have an associated element named -host. +
A {{DocumentFragment}} node has an associated +host (null or an +element in a different node tree). It is null unless otherwise stated.
An object A is a host-including inclusive ancestor of an object B, if either A is an inclusive ancestor of B, -or if B's root has an associated host and +or if B's root has a non-null host and A is a host-including inclusive ancestor of B's root's host. @@ -5014,6 +5020,10 @@ interface ShadowRoot : DocumentFragment {
Shadow roots have an associated encapsulation mode
("open" or "closed").
Shadow roots's associated host is never null.
+ +The host attribute's getter must return the
context object's host.
diff --git a/dom.html b/dom.html
index 62b9e9771..5c7706ce1 100644
--- a/dom.html
+++ b/dom.html
@@ -1023,6 +1023,8 @@
A shadow tree is a node tree whose root is a shadow root.
+A shadow root is always connected to another node tree through its host. A shadow tree is therefore never alone. The node tree of a shadow root’s host is sometimes +referred to as the light tree.
To ensure pre-insertion validity of a node into a parent before a child, run these steps:
A DocumentFragment node can have an associated element named host.
A DocumentFragment node has an associated host (null or an element in a different node tree). It is null unless otherwise stated.
An object A is a host-including inclusive ancestor of an object B, if either A is an inclusive ancestor of B, -or if B’s root has an associated host and A is a host-including inclusive ancestor of B’s root’s host.
+or if B’s root has a non-null host and A is a host-including inclusive ancestor of B’s root’s host.The DocumentFragment node’s host concept is useful for HTML’s template element and for shadow roots, and impacts the pre-insert and replace algorithms.
tree = new DocumentFragment()
@@ -2787,6 +2789,7 @@ ShadowRoot nodes are simply known as shadow roots.
Shadow roots have an associated encapsulation mode ("open" or "closed").
Shadow roots’s associated host is never null.
The host attribute’s getter must return the context object’s host.
In shadow-including tree order, is shadow-including preorder, depth-first traversal of a node tree. shadow-including preorder, depth-first traversal of a node tree tree is preorder, depth-first traversal of tree, with for each element element encountered in tree with a non-null shadow root, shadow-including preorder, depth-first traversal of that element’s shadow root’s node tree just after it is @@ -5193,6 +5196,7 @@