;'use strict';(function(exports){var datastore;var DATASTORE_NAME='bookmarks_store';var readyState;var listeners=Object.create(null);function init(){return new Promise(function doInit(resolve,reject){if(readyState==='initialized'){resolve();return;}
if(readyState==='initializing'){document.addEventListener('ds-initialized',function oninitalized(){document.removeEventListener('ds-initialized',oninitalized);resolve();});return;}
readyState='initializing';if(!navigator.getDataStores){console.error('Bookmark store: DataStore API is not working');reject({name:'NO_DATASTORE'});readyState='failed';return;}
navigator.getDataStores(DATASTORE_NAME).then(function(ds){if(ds.length<1){console.error('Bookmark store: Cannot get access to the Store');reject({name:'NO_ACCESS_TO_DATASTORE'});readyState='failed';return;}
datastore=ds[0];datastore.addEventListener('change',onchangeHandler);readyState='initialized';document.dispatchEvent(new CustomEvent('ds-initialized'));resolve();},reject);});}
function doGetAll(resolve,reject){var result=Object.create(null);var cursor=datastore.sync();function cursorResolve(task){switch(task.operation){case'update':case'add':result[task.data.id]=task.data;break;case'remove':delete result[task.data.id];break;case'clear':result=Object.create(null);break;case'done':resolve(result);return;}
cursor.next().then(cursorResolve,reject);}
cursor.next().then(cursorResolve,reject);}
function get(id){return new Promise(function doGet(resolve,reject){init().then(function onInitialized(){datastore.get(id).then(resolve,reject);},reject);});}
function getAll(){return new Promise(function doGet(resolve,reject){init().then(doGetAll.bind(null,resolve,reject),reject);});}
function onchangeHandler(event){var operation=event.operation;var callbacks=listeners[operation];callbacks&&callbacks.forEach(function iterCallback(callback){datastore.get(event.id).then(function got(result){callback.method.call(callback.context||this,{type:operation,target:result||event});});});}
function addEventListener(type,callback){var context;if(!(type in listeners)){listeners[type]=[];}
var cb=callback;if(typeof cb==='object'){context=cb;cb=cb.handleEvent;}
if(cb){listeners[type].push({method:cb,context:context});init();}}
function removeEventListener(type,callback){if(!(type in listeners)){return false;}
var callbacks=listeners[type];var length=callbacks.length;for(var i=0;i<length;i++){var thisCallback=callback;if(typeof thisCallback==='object'){thisCallback=callback.handleEvent;}
if(callbacks[i]&&callbacks[i].method===thisCallback){callbacks.splice(i,1);return true;}}
return false;}
function add(data){return new Promise(function doAdd(resolve,reject){init().then(function onInitialized(){var id=data.url;Object.defineProperty(data,'id',{enumerable:true,configurable:false,writable:false,value:id});datastore.add(data,id).then(function add_success(){resolve(true);},function add_error(){datastore.put(data,id).then(function put_success(){resolve();},reject);});},reject);});}
function getRevisionId(){return new Promise(function doGet(resolve,reject){init().then(function onInitialized(){resolve(datastore.revisionId);},reject);});}
function put(data){return new Promise(function doAdd(resolve,reject){init().then(function onInitialized(){datastore.put(data,data.id).then(function success(){resolve();},reject);},reject);});}
function remove(id){return new Promise(function doRemove(resolve,reject){init().then(function onInitialized(){datastore.remove(id).then(resolve,reject);},reject);});}
function clear(){return new Promise(function doClear(resolve,reject){init().then(function onInitialized(){datastore.clear().then(resolve,reject);},reject);});}
exports.BookmarksDatabase={get:get,getAll:getAll,getRevisionId:getRevisionId,addEventListener:addEventListener,removeEventListener:removeEventListener,add:add,put:put,remove:remove,clear:clear};}(window));