A javascript notification for react-native

NotificationCenter.js

// FaiChou
// willMount add
// willUnmount remove

const __notices = []; // eslint-disable-line
const isDebug = true;


// register notification，name: notification name，selector: function for action to do，observer: type Object
export const addNotification = (name, selector, observer) => {
  if (name && selector) {
    if (!observer) {
      console.warn('addNotification Warning: need observer');
    }
    if (isDebug) {
      console.log('addNotification:', name);
    }
    addNotices({
      name,
      selector,
      observer,
    });
  } else {
    console.error('addNotification error: lack of name or selector');
  }
};

const addNotices = (newNotice) => {
  __notices.push(newNotice);
};

// remove notification， name: notification name，observer: the object who registed it
export const removeNotification = (name, observer) => {
  for (let i = 0; i < __notices.length; i++) {
    const notice = __notices[i];
    if (notice.name === name) {
      if (notice.observer === observer) {
        __notices.splice(i, 1);
        return;
      }
    }
  }
};

// brodcast / send event, name: notification name， info: some params to pass
export const postNotification = (name, info={}) => {
  if (__notices.length === 0) {
    console.error('postNotification error: no notice');
    return;
  }
  for (let i = 0; i < __notices.length; i++) {
    const notice = __notices[i];
    if (notice.name === name) {
      notice.selector(info);
    }
  }
};