import * as actions from './actions.js';

const initialState = {
--    arg1: undefined,
--    arg2: undefined
++    isHeader: false
};

export default (state = initialState, action = {}) => {

    const {type, payload} = action;

--    if (type === actions.EXAMPLE_ACTION_1) {
--        return Object.assign({}, state, {});
--    }
++    if (type === actions.TOGGLE_PANEL_HEADER) {
++        return Object.assign({}, state, { isHeader: !state.isHeader });
++    }

--    if (type === actions.EXAMPLE_ACTION_2) {
--        return Object.assign({}, state, {
--            arg1: payload.arg1
--        });
--    }

--    if (type === actions.EXAMPLE_ACTION_3) {
--        return Object.assign({}, state, {
--            arg1: payload.arg1,
--            arg2: payload.arg2
--        });
--    }

    return state;
}