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Psychotoxical
e945da693a
Theme infra (fixedThemes, theme utils), music-network presetIcon, audio-device probe, library-index sync, and the auth*SettingsActions slices stay in the core/global layer (consumed via @/ alias) to avoid inverting core->feature.
37 lines
1.3 KiB
TypeScript
37 lines
1.3 KiB
TypeScript
import type { BackdropSourcePref } from '@/cover/artistBackdrop';
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/**
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* Move the source at `from` so it lands at exactly index `to` — the ↑/↓ buttons,
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* i.e. a swap with the neighbour. Returns a new array, or `null` for an
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* out-of-range or no-op move (so the caller can skip a redundant update).
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*/
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export function moveSourceTo(
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sources: BackdropSourcePref[],
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from: number,
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to: number,
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): BackdropSourcePref[] | null {
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if (from === to || from < 0 || to < 0 || from >= sources.length || to >= sources.length) return null;
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const next = sources.slice();
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const [item] = next.splice(from, 1);
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next.splice(to, 0, item);
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return next;
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}
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/**
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* Insert the source at `from` immediately before the row at `beforeIndex` — the
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* drag-drop case, matching the "line above this row" drop indicator. The -1 when
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* dragging downward accounts for the slot the dragged item vacated. Returns a
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* new array, or `null` for an out-of-range or no-op move.
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*/
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export function dropSourceBefore(
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sources: BackdropSourcePref[],
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from: number,
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beforeIndex: number,
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): BackdropSourcePref[] | null {
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if (from === beforeIndex || from < 0 || from >= sources.length) return null;
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const next = sources.slice();
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const [item] = next.splice(from, 1);
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next.splice(from < beforeIndex ? beforeIndex - 1 : beforeIndex, 0, item);
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return next;
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}
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