Function getInputHistoryState

dash/dash-renderer/src/reducers/reducer.js:93–113

(payload, state, recordChanges)

}

function getInputHistoryState(payload, state, recordChanges) {
    const {graphs, paths, layout} = state;
    const {itempath, props} = payload;
    const refProps = path(itempath.concat(['props']), layout) || {};
    const {id} = refProps;

    let historyEntry;
    if (id) {
        if (recordChanges) {
            state.changed = {id, props};
        }

        historyEntry = {id, props: {}};
        keys(props).forEach(propKey => {
            if (getCallbacksByInput(graphs, paths, id, propKey).length) {
                historyEntry.props[propKey] = refProps[propKey];
            }
        });
    }
    return historyEntry;
}

function recordHistory(reducer) {
    return function (state, action) {