Struct ItemBatcher 

struct ItemBatcher {
    axis: AbstractAxis,
    index_offset: usize,
    current_span: u16,
    current_is_flex: bool,
}

Takes an axis, and a list of grid items sorted firstly by whether they cross a flex track in the specified axis (items that don’t cross a flex track first) and then by the number of tracks they cross in specified axis (ascending order).

The list holds references so that the GridItems themselves stay in document order and only the (pointer-sized) references are sorted.

Fields

axis: AbstractAxis

The axis in which the ItemBatcher is operating. Used when querying properties from items.

index_offset: usize

The starting index of the current batch

current_span: u16

The span of the items in the current batch

current_is_flex: bool

Whether the current batch of items cross a flexible track

Implementations

impl ItemBatcher

fn new(axis: AbstractAxis) -> Self

Create a new ItemBatcher for the specified axis

fn next<'items, 'a>( &mut self, items: &'items mut [&'a mut GridItem], ) -> Option<(&'items mut [&'a mut GridItem], bool)>

This is basically a manual version of Iterator::next which passes items in as a parameter on each iteration to work around borrow checker rules