spiegel-keyman/web/source/dom/variableStoreCookieSerializer.ts

namespace com.keyman.dom {
  export class VariableStoreCookieSerializer implements text.VariableStoreSerializer {
    loadStore(keyboardID: string, storeName: string): text.VariableStore {
      var cName='KeymanWeb_'+keyboardID+'_Option_'+storeName;
      let map = com.keyman.singleton.util.loadCookie(cName) as text.VariableStore;

      if(typeof map[storeName] != 'undefined') {
        // Since it was stored in a cookie.
        map[storeName] = decodeURIComponent(map[storeName]);
      }

      return map || {};
    }
    
    saveStore(keyboardID: string, storeName: string, storeMap: text.VariableStore) {
      // The cookie entry includes the store name...
      var cName='KeymanWeb_'+keyboardID+'_Option_'+storeName;
      storeMap[storeName] = encodeURIComponent(storeMap[storeName]);

      // And the lookup under that entry looks for the value under the store name, again.
      com.keyman.singleton.util.saveCookie(cName, storeMap);
    }
  }
}