fission-core 0.9.0

Core runtime, state, actions, effects, resources, input, and UI model for Fission
Documentation 
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use std::collections::HashSet;

use fission_core::ScrollStateMap;
use fission_ir::WidgetId;

#[test]
fn scroll_state_discards_unmounted_scroll_nodes() {
    let active = WidgetId::explicit("active-scroll");
    let inactive = WidgetId::explicit("inactive-scroll");
    let mut scroll = ScrollStateMap::default();
    scroll.set_offset(active, 40.0);
    scroll.set_offset(inactive, 120.0);

    scroll.retain_active(&HashSet::from([active]));

    assert_eq!(scroll.get_offset(active), 40.0);
    assert_eq!(scroll.get_offset(inactive), 0.0);
}