Enum script::dom::node::ChildrenMutation

pub enum ChildrenMutation<'a> {
    Append {
        prev: &'a Node,
        added: &'a [&'a Node],
    },
    Insert {
        prev: &'a Node,
        added: &'a [&'a Node],
        next: &'a Node,
    },
    Prepend {
        added: &'a [&'a Node],
        next: &'a Node,
    },
    Replace {
        prev: Option<&'a Node>,
        removed: &'a Node,
        added: &'a [&'a Node],
        next: Option<&'a Node>,
    },
    ReplaceAll {
        removed: &'a [&'a Node],
        added: &'a [&'a Node],
    },
    ChangeText,
}

Variants

Append

Fields

prev: &'a Node

added: &'a [&'a Node]

Insert

Fields

prev: &'a Node

added: &'a [&'a Node]

next: &'a Node

Prepend

Fields

added: &'a [&'a Node]

next: &'a Node

Replace

Fields

prev: Option<&'a Node>

removed: &'a Node

added: &'a [&'a Node]

next: Option<&'a Node>

ReplaceAll

Fields

removed: &'a [&'a Node]

added: &'a [&'a Node]

ChangeText

Mutation for when a Text node’s data is modified. This doesn’t change the structure of the list, which is what the other variants’ fields are stored for at the moment, so this can just have no fields.

Implementations

impl<'a> ChildrenMutation<'a>

fn insert( prev: Option<&'a Node>, added: &'a [&'a Node], next: Option<&'a Node> ) -> ChildrenMutation<'a>

fn replace( prev: Option<&'a Node>, removed: &'a Option<&'a Node>, added: &'a [&'a Node], next: Option<&'a Node> ) -> ChildrenMutation<'a>

fn replace_all( removed: &'a [&'a Node], added: &'a [&'a Node] ) -> ChildrenMutation<'a>

pub fn next_child(&self) -> Option<&Node>

Get the child that follows the added or removed children. Currently only used when this mutation might force us to restyle later children (see HAS_SLOW_SELECTOR_LATER_SIBLINGS and Element’s implementation of VirtualMethods::children_changed).

pub fn modified_edge_element(&self) -> Option<Root<Dom<Node>>>

If nodes were added or removed at the start or end of a container, return any previously-existing child whose “:first-child” or “:last-child” status may have changed.

NOTE: This does not check whether the inserted/removed nodes were elements, so in some cases it will return a false positive. This doesn’t matter for correctness, because at worst the returned element will be restyled unnecessarily.