Enum TreeModelChange 

pub enum TreeModelChange {
    Reset,
    RowsInserted {
        parent: u64,
        index: usize,
        count: usize,
    },
    RowsRemoved {
        parent: u64,
        index: usize,
        count: usize,
    },
    RowsMoved {
        parent: u64,
        from: usize,
        to: usize,
        count: usize,
    },
    RowsChanged {
        ids: Vec<u64>,
    },
    SlotsChanged {
        slots: Vec<TreeSlot>,
    },
}

A granular notification from an external tree model. Structural and slot identity changes reconcile the expanded-order index once per batch; label changes preserve geometry and query fresh data on the next frame.

Variants

Reset

RowsInserted

Fields

parent: u64

index: usize

count: usize

RowsRemoved

Fields

parent: u64

index: usize

count: usize

RowsMoved

Fields

parent: u64

from: usize

to: usize

count: usize

RowsChanged

Fields

ids: Vec<u64>

SlotsChanged

One or more paged slots changed between loading, ready, and error.

Fields

slots: Vec<TreeSlot>

Trait Implementations

impl Clone for TreeModelChange

fn clone(&self) -> TreeModelChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TreeModelChange

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

Formats the value using the given formatter.

impl PartialEq for TreeModelChange

fn eq(&self, other: &TreeModelChange) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for TreeModelChange

impl StructuralPartialEq for TreeModelChange