Function dispatchHighDownActually

src/component/axisPointer/axisTrigger.ts:450–505

(
    axesInfo: Dictionary<CollectedAxisInfo>,
    dispatchAction: ExtensionAPI['dispatchAction'],
    api: ExtensionAPI
)

}

function dispatchHighDownActually(
    axesInfo: Dictionary<CollectedAxisInfo>,
    dispatchAction: ExtensionAPI['dispatchAction'],
    api: ExtensionAPI
) {
    // FIXME
    // highlight status modification should be a stage of main process?
    // (Consider conflict (e.g., legend and axisPointer) and setOption)

    const zr = api.getZr();
    const highDownKey = 'axisPointerLastHighlights' as const;
    const lastHighlights = inner(zr)[highDownKey] || {};
    const newHighlights: Dictionary<BatchItem> = inner(zr)[highDownKey] = {};

    // Update highlight/downplay status according to axisPointer model.
    // Build hash map and remove duplicate incidentally.
    each(axesInfo, function (axisInfo, key) {
        const option = axisInfo.axisPointerModel.option;
        option.status === 'show' && axisInfo.triggerEmphasis && each(option.seriesDataIndices, function (batchItem) {
            newHighlights[batchItem.seriesIndex + '|' + batchItem.dataIndex] = batchItem;
        });
    });

    // Diff.
    const toHighlight: Pick<BatchItem, 'seriesIndex' | 'dataIndex'>[] = [];
    const toDownplay: Pick<BatchItem, 'seriesIndex' | 'dataIndex'>[] = [];
    function makeHighDownItem(batchItem: BatchItem) {
        // `dataIndexInside` should be removed, since the last recorded `dataIndexInside` may have
        // been changed if `dataZoomInside` changed the view. Only `dataIndex` will suffice.
        return {
            seriesIndex: batchItem.seriesIndex,
            dataIndex: batchItem.dataIndex,
        };
    }
    each(lastHighlights, function (batchItem, key) {
        !newHighlights[key] && toDownplay.push(makeHighDownItem(batchItem));
    });
    each(newHighlights, function (batchItem, key) {
        !lastHighlights[key] && toHighlight.push(makeHighDownItem(batchItem));
    });

    toDownplay.length && api.dispatchAction({
        type: 'downplay',
        escapeConnect: true,
        // Not blur others when highlight in axisPointer.
        notBlur: true,
        batch: toDownplay
    } as DownplayPayload);
    toHighlight.length && api.dispatchAction({
        type: 'highlight',
        escapeConnect: true,
        // Not blur others when highlight in axisPointer.
        notBlur: true,
        batch: toHighlight
    } as HighlightPayload);
}

function findInputAxisInfo(