Function processTxInfo

src/chart/custom/CustomView.ts:1249–1300

(
    elOption: CustomElementOption,
    state: DisplayStateNonNormal,
    attachedTxInfo: AttachedTxInfo
)

}

function processTxInfo(
    elOption: CustomElementOption,
    state: DisplayStateNonNormal,
    attachedTxInfo: AttachedTxInfo
): void {
    const stateOpt = !state ? elOption : retrieveStateOption(elOption, state);
    const styleOpt = !state
        ? (elOption as CustomDisplayableOption).style
        : retrieveStyleOptionOnState(elOption, stateOpt, EMPHASIS);

    const elType = elOption.type;
    let txCfg = stateOpt ? stateOpt.textConfig : null;
    const txConOptNormal = elOption.textContent;
    let txConOpt: CustomElementOption | CustomElementOptionOnState =
        !txConOptNormal ? null : !state ? txConOptNormal : retrieveStateOption(txConOptNormal, state);

    if (styleOpt && (
        // Because emphasis style has little info to detect legacy,
        // if normal is legacy, emphasis is trade as legacy.
        attachedTxInfo.isLegacy
        || isEC4CompatibleStyle(styleOpt, elType, !!txCfg, !!txConOpt)
    )) {
        attachedTxInfo.isLegacy = true;
        const convertResult = convertFromEC4CompatibleStyle(styleOpt, elType, !state);
        // Explicitly specified `textConfig` and `textContent` has higher priority than
        // the ones generated by legacy style. Otherwise if users use them and `api.style`
        // at the same time, they not both work and hardly to known why.
        if (!txCfg && convertResult.textConfig) {
            txCfg = convertResult.textConfig;
        }
        if (!txConOpt && convertResult.textContent) {
            txConOpt = convertResult.textContent;
        }
    }

    if (!state && txConOpt) {
        const txConOptNormal = txConOpt as CustomElementOption;
        // `textContent: {type: 'text'}`, the "type" is easy to be missing. So we tolerate it.
        !txConOptNormal.type && (txConOptNormal.type = 'text');
        if (__DEV__) {
            // Do not tolerate incorrcet type for forward compat.
            assert(
                txConOptNormal.type === 'text',
                'textContent.type must be "text"'
            );
        }
    }

    const info = !state ? attachedTxInfo.normal : attachedTxInfo[state];
    info.cfg = txCfg;
    info.conOpt = txConOpt;
}

function retrieveStateOption(
    elOption: CustomElementOption, state: DisplayStateNonNormal