Struct MutationObserverRegistry 

pub struct MutationObserverRegistry {
    pub next_observer_id: u32,
    pub registrations: Vec<RegisteredObserver>,
    pub records: Vec<(u32, MutationRecord)>,
}

MutationObserver 管理コア状態機械

Fields

next_observer_id: u32

registrations: Vec<RegisteredObserver>

records: Vec<(u32, MutationRecord)>

Implementations

impl MutationObserverRegistry

pub fn new() -> Self

pub fn allocate_id(&mut self) -> u32

pub fn register( &mut self, observer_id: u32, target_idx: usize, options: MutationObserverOptions, )

W3C 仕様: 同一 observer_id かつ同一 target_idx の登録は既存を更新、別 target_idx は追加

pub fn disconnect(&mut self, observer_id: u32)

disconnect(): 当該 observer_id の全登録と保留レコードを破棄

pub fn take_records(&mut self, observer_id: u32) -> Vec<MutationRecord>

takeRecords(): 当該 observer_id の保留レコードを取り出してクリア

pub fn notify_child_list<F>( &mut self, parent_idx: usize, added: Vec<usize>, removed: Vec<usize>, is_ancestor: F, )

where F: Fn(usize, usize) -> bool,

childList 変化を通知

pub fn notify_attribute<F>( &mut self, target_idx: usize, attr_name: &str, old_val: Option<&str>, is_ancestor: F, )

where F: Fn(usize, usize) -> bool,

属性変化を通知

pub fn notify_character_data<F>( &mut self, target_idx: usize, old_val: Option<&str>, is_ancestor: F, )

where F: Fn(usize, usize) -> bool,

characterData 変化を通知

pub fn drain_all_grouped(&mut self) -> BTreeMap<u32, Vec<MutationRecord>>

全レコードを一括ドレイン（observer_id ごとにグループ化）

Trait Implementations

impl Clone for MutationObserverRegistry

fn clone(&self) -> MutationObserverRegistry

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MutationObserverRegistry

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

Formats the value using the given formatter.

impl Default for MutationObserverRegistry

fn default() -> MutationObserverRegistry

Returns the “default value” for a type.