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MutationObserver api: Implement takeRecords() and characterData mutations

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This commit is contained in:
Fabrice Desré 2018-04-24 20:39:28 -07:00
parent c5f7c9ccf3
commit 75434e6fce
9 changed files with 98 additions and 112 deletions
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12
components/script/dom/characterdata.rs
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@ -17,6 +17,7 @@ use dom::bindings::str::DOMString;
use dom::comment::Comment;
use dom::document::Document;
use dom::element::Element;
use dom::mutationobserver::{Mutation, MutationObserver};
use dom::node::{ChildrenMutation, Node, NodeDamage};
use dom::processinginstruction::ProcessingInstruction;
use dom::text::Text;
@ -81,6 +82,14 @@ impl CharacterData {
}
}
}
// Queue a MutationObserver record before changing the content.
fn queue_mutation_record(&self) {
let mutation = Mutation::CharacterData {
old_value: self.data.borrow().clone(),
};
MutationObserver::queue_a_mutation_record(self.upcast::<Node>(), mutation);
}
}
impl CharacterDataMethods for CharacterData {
@ -91,6 +100,7 @@ impl CharacterDataMethods for CharacterData {
// https://dom.spec.whatwg.org/#dom-characterdata-data
fn SetData(&self, data: DOMString) {
self.queue_mutation_record();
let old_length = self.Length();
let new_length = data.encode_utf16().count() as u32;
*self.data.borrow_mut() = data;
@ -193,6 +203,8 @@ impl CharacterDataMethods for CharacterData {
}
};
// Step 4: Mutation observers.
self.queue_mutation_record();
// Step 5 to 7.
new_data = String::with_capacity(
prefix.len() +