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Implement MutationObserver childList mutations.

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This commit is contained in:
Imanol Fernandez 2017-05-18 17:06:24 +02:00
parent 864f5509d8
commit 0290e405ce
6 changed files with 112 additions and 119 deletions
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55
components/script/dom/mutationrecord.rs
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@ -4,7 +4,7 @@
use dom::bindings::codegen::Bindings::MutationRecordBinding::MutationRecordBinding;
use dom::bindings::codegen::Bindings::MutationRecordBinding::MutationRecordBinding::MutationRecordMethods;
use dom::bindings::js::{JS, Root};
use dom::bindings::js::{JS, MutNullableJS, Root};
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::bindings::str::DOMString;
use dom::node::{Node, window_from_node};
@ -20,6 +20,10 @@ pub struct MutationRecord {
attribute_name: Option<DOMString>,
attribute_namespace: Option<DOMString>,
old_value: Option<DOMString>,
added_nodes: MutNullableJS<NodeList>,
removed_nodes: MutNullableJS<NodeList>,
next_sibling: Option<JS<Node>>,
prev_sibling: Option<JS<Node>>,
}
impl MutationRecord {
@ -32,15 +36,40 @@ impl MutationRecord {
target,
Some(DOMString::from(&**attribute_name)),
attribute_namespace.map(|n| DOMString::from(&**n)),
old_value);
old_value,
None, None, None, None);
reflect_dom_object(record, &*window_from_node(target), MutationRecordBinding::Wrap)
}
pub fn child_list_mutated(target: &Node,
added_nodes: Option<&[&Node]>,
removed_nodes: Option<&[&Node]>,
next_sibling: Option<&Node>,
prev_sibling: Option<&Node>) -> Root<MutationRecord> {
let window = window_from_node(target);
let added_nodes = added_nodes.map(|list| NodeList::new_simple_list_slice(&window, list));
let removed_nodes = removed_nodes.map(|list| NodeList::new_simple_list_slice(&window, list));
reflect_dom_object(box MutationRecord::new_inherited("childList",
target,
None, None, None,
added_nodes.as_ref().map(|list| &**list),
removed_nodes.as_ref().map(|list| &**list),
next_sibling,
prev_sibling),
&*window,
MutationRecordBinding::Wrap)
}
fn new_inherited(record_type: &str,
target: &Node,
attribute_name: Option<DOMString>,
attribute_namespace: Option<DOMString>,
old_value: Option<DOMString>) -> MutationRecord {
old_value: Option<DOMString>,
added_nodes: Option<&NodeList>,
removed_nodes: Option<&NodeList>,
next_sibling: Option<&Node>,
prev_sibling: Option<&Node>) -> MutationRecord {
MutationRecord {
reflector_: Reflector::new(),
record_type: DOMString::from(record_type),
@ -48,6 +77,10 @@ impl MutationRecord {
attribute_name: attribute_name,
attribute_namespace: attribute_namespace,
old_value: old_value,
added_nodes: MutNullableJS::new(added_nodes),
removed_nodes: MutNullableJS::new(removed_nodes),
next_sibling: next_sibling.map(JS::from_ref),
prev_sibling: prev_sibling.map(JS::from_ref),
}
}
}
@ -80,24 +113,28 @@ impl MutationRecordMethods for MutationRecord {
// https://dom.spec.whatwg.org/#dom-mutationrecord-addednodes
fn AddedNodes(&self) -> Root<NodeList> {
let window = window_from_node(&*self.target);
NodeList::empty(&window)
self.added_nodes.or_init(|| {
let window = window_from_node(&*self.target);
NodeList::empty(&window)
})
}
// https://dom.spec.whatwg.org/#dom-mutationrecord-removednodes
fn RemovedNodes(&self) -> Root<NodeList> {
let window = window_from_node(&*self.target);
NodeList::empty(&window)
self.removed_nodes.or_init(|| {
let window = window_from_node(&*self.target);
NodeList::empty(&window)
})
}
// https://dom.spec.whatwg.org/#dom-mutationrecord-previoussibling
fn GetPreviousSibling(&self) -> Option<Root<Node>> {
None
self.prev_sibling.as_ref().map(|node| Root::from_ref(&**node))
}
// https://dom.spec.whatwg.org/#dom-mutationrecord-previoussibling
fn GetNextSibling(&self) -> Option<Root<Node>> {
None
self.next_sibling.as_ref().map(|node| Root::from_ref(&**node))
}
}