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DomSnapshot

Struct DomSnapshot 

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pub struct DomSnapshot { /* private fields */ }
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An owned snapshot of a DOM subtree.

Nodes are stored in pre-order so id == index. roots lists the ids of top-level nodes (a snapshot has exactly one root in practice).

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impl DomSnapshot

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pub fn from_tree( root: &NodeRef<HtmlNodeType>, ) -> (Self, Vec<Weak<RefCell<TreeNode<HtmlNodeType>>>>)

Builds a snapshot of root and the matching live-node references.

dom_refs[i] is the live DOM node for snapshot node id i. The refs are kept separate (and are not Send) so the UI thread can apply attribute write-backs after the background thread finished building.

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pub fn from_mirror( root: &NodeRef<HtmlNodeType>, dom_ids: &HashMap<usize, u64>, ) -> Self

Builds a snapshot of a JS thread’s mirror tree.

dom_ids maps Rc::as_ptr addresses of mirror nodes to the stable id assigned by the JS runtime, so node identities survive the snapshot round trip. Mirrored nodes that were never exposed to scripts carry SnapNode::dom_id zero.

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pub fn into_tree(&self) -> (DomTree, HashMap<usize, u64>)

Rebuilds a live DOM tree from the snapshot.

The returned map keyed by Rc::as_ptr address pairs every non-zero SnapNode::dom_id with the freshly built node, so the caller can re-register the JS runtime’s node references after committing.

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pub fn roots(&self) -> &[NodeId]

Root node ids (always a single root in practice).

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pub fn nodes(&self) -> &[SnapNode]

All snapshot nodes in pre-order (id == index).

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pub fn node(&self, id: NodeId) -> &SnapNode

The node with the given id.

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pub fn children(&self, id: NodeId) -> &[NodeId]

Child ids of the node with the given id.

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pub fn inner_text(&self, id: NodeId) -> String

Concatenated text content of a node, including descendants.

Trait Implementations§

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impl Debug for DomSnapshot

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for DomSnapshot

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fn default() -> DomSnapshot

Returns the “default value” for a type. Read more

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