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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | 103x 103x 39x 39x 39x 39x 39x 39x 39x 39x 39x 11x 39x 39x 39x | import { useCallback, useEffect, useRef, useState } from "react";
import {
EconomicsResultLineKindEnum,
type EconomicsResultLineRead,
} from "@/api/apiStore.gen";
import { scrollElementIntoEconomicsContext } from "../../shared/model/economicsScroll";
import { DEPRECIATION_METRIC_ROW_KEYS } from "../model/financialMetricCatalog";
import type { DetailSectionValue } from "../model/types";
const RESULT_ROW_HIGHLIGHT_MS = 1400;
const RESULT_ROW_SCROLL_ATTEMPTS = 8;
export function useResultRowFocus({
lines,
focusResultLineId,
focusRequestKey,
}: {
lines?: EconomicsResultLineRead[];
focusResultLineId?: number;
focusRequestKey: number;
}) {
const [selectedSourceRowId, setSelectedSourceRowId] = useState<number>();
const [openDetailSections, setOpenDetailSections] = useState<
DetailSectionValue[]
>([]);
const rowRefs = useRef(new Map<number, HTMLElement>());
const handledFocusRequestRef = useRef<string | null>(null);
const highlightClearTimeoutRef = useRef<ReturnType<
typeof window.setTimeout
> | null>(null);
const scrollToSourceRow = useCallback((sourceRowId: number, attempt = 0) => {
window.requestAnimationFrame(() => {
const row = rowRefs.current.get(sourceRowId);
if (row) {
scrollElementIntoEconomicsContext(row);
row.focus();
return;
}
if (attempt < RESULT_ROW_SCROLL_ATTEMPTS) {
scrollToSourceRow(sourceRowId, attempt + 1);
}
});
}, []);
const selectSourceRow = useCallback(
(sourceRowId: number | undefined) => {
Iif (!sourceRowId) return;
if (lines) {
const sourceSections = detailSectionsForLineId(lines, sourceRowId);
setOpenDetailSections((current) =>
mergeDetailSections(current, sourceSections),
);
}
if (highlightClearTimeoutRef.current !== null) {
window.clearTimeout(highlightClearTimeoutRef.current);
}
setSelectedSourceRowId(sourceRowId);
highlightClearTimeoutRef.current = window.setTimeout(() => {
setSelectedSourceRowId((current) =>
current === sourceRowId ? undefined : current,
);
highlightClearTimeoutRef.current = null;
}, RESULT_ROW_HIGHLIGHT_MS);
scrollToSourceRow(sourceRowId);
},
[lines, scrollToSourceRow],
);
useEffect(() => {
return () => {
if (highlightClearTimeoutRef.current !== null) {
window.clearTimeout(highlightClearTimeoutRef.current);
}
};
}, []);
useEffect(() => {
if (!focusResultLineId) return;
const focusRequestId =
String(focusRequestKey) + ":" + String(focusResultLineId);
Iif (handledFocusRequestRef.current === focusRequestId) return;
Iif (!lines?.some((line) => line.id === focusResultLineId)) return;
handledFocusRequestRef.current = focusRequestId;
selectSourceRow(focusResultLineId);
}, [focusRequestKey, focusResultLineId, lines, selectSourceRow]);
const detailSectionValues = mergeDetailSections(
openDetailSections,
lines && selectedSourceRowId
? detailSectionsForLineId(lines, selectedSourceRowId)
: [],
);
return {
selectedSourceRowId,
rowRefs: rowRefs.current,
detailSectionValues,
setOpenDetailSections,
selectSourceRow,
};
}
function detailSectionsForLineId(
lines: EconomicsResultLineRead[],
lineId: number,
): DetailSectionValue[] {
const line = lines.find((candidate) => candidate.id === lineId);
Iif (!line) return [];
Iif (line.kind === EconomicsResultLineKindEnum.Capital)
return ["capital-summary"];
if (line.kind === EconomicsResultLineKindEnum.Operating) {
return ["resource-breakdown", "operating-breakdown", "operating-summary"];
}
Iif (line.kind === EconomicsResultLineKindEnum.Depreciation)
return ["depreciation-tax"];
if (
line.kind === EconomicsResultLineKindEnum.FinancialMetric &&
DEPRECIATION_METRIC_ROW_KEYS.has(line.row_key)
) {
return ["depreciation-tax"];
}
Iif (line.kind === EconomicsResultLineKindEnum.CashFlow)
return ["calculation-trace"];
return [];
}
function mergeDetailSections(
explicitSections: DetailSectionValue[],
selectedRowSections: DetailSectionValue[],
): DetailSectionValue[] {
if (selectedRowSections.length === 0) return explicitSections;
return Array.from(new Set([...explicitSections, ...selectedRowSections]));
}
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