Enum DataChange 

pub enum DataChange {
    ItemsInserted {
        range: Range<usize>,
    },
    ItemsRemoved {
        range: Range<usize>,
    },
    ItemsMoved {
        from: usize,
        to: usize,
        count: usize,
    },
    ItemUpdated {
        index: usize,
    },
    WindowLoaded {
        range: Range<usize>,
    },
    Reset,
}

Describes a mutation to a flat list. Emitted by crate::ListModel automatically and by crate::ListDataSource implementors manually.

Variants

ItemsInserted

Rows were inserted; range holds the indices of the newly inserted items.

Fields

range: Range<usize>

ItemsRemoved

Rows were removed; range holds the indices they occupied before removal.

Fields

range: Range<usize>

ItemsMoved

A contiguous block of count rows moved from from to to (post-removal index).

Fields

from: usize

to: usize

count: usize

ItemUpdated

A single row’s data changed in place without any structural shift.

Fields

index: usize

WindowLoaded

A window of previously-Loading rows became Ready (lazy / windowed sources). Semantically like ItemsInserted for a row-height cache (divergence = range.start), but no rows were added — the count was already declared — so a SelectionModel must NOT index-shift for it.

Fields

range: Range<usize>

Reset

The entire list was replaced; consumers must discard all cached state and rebuild.

Trait Implementations

impl Clone for DataChange

fn clone(&self) -> DataChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DataChange

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

Formats the value using the given formatter.

impl Eq for DataChange

impl PartialEq for DataChange

fn eq(&self, other: &DataChange) -> 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 StructuralPartialEq for DataChange