IndexedDB interface for Cities overlay
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://updategf.qytechs.cn/scripts/546306/1644332/WME%20Cities%20Overlay_DB.js
// ==UserScript==
// @name WME Cities Overlay DB
// @namespace https://greasyfork.org/en/users/166843-wazedev
// @version 2025.08.18.02
// @description IndexedDB interface for Cities overlay
// @author WazeDev
// @include /^https:\/\/(www|beta)\.waze\.com\/(?!user\/)(.{2,6}\/)?editor\/?.*$/
// @license GNU GPLv3
// @grant none
// ==/UserScript==
(function() {
'use strict';
var db;
function getDB() {
if (!db) {
db = new Promise(function(resolve, reject) {
var openreq = indexedDB.open('WMECitiesOverlay', 1);
openreq.onerror = function() {
reject(openreq.error);
};
openreq.onupgradeneeded = function() {
// First time setup: create an empty object store
//openreq.result.createObjectStore(dbName, { keyPath: "state" });
if(!openreq.result.objectStoreNames.contains("US_states_cities")) {
openreq.result.createObjectStore("US_states_cities", { keyPath: "state" });
}
if(!openreq.result.objectStoreNames.contains("MX_states_cities")) {
openreq.result.createObjectStore("MX_states_cities", { keyPath: "state" });
}
// CA
if(!openreq.result.objectStoreNames.contains("CA_states_cities")) {
openreq.result.createObjectStore("CA_states_cities", { keyPath: "state" });
}
};
openreq.onsuccess = function() {
resolve(openreq.result);
};
});
}
return db;
}
function withStore(storeName, type, callback) {
return getDB().then(function(db) {
return new Promise(function(resolve, reject) {
var transaction = db.transaction(storeName, type);
transaction.oncomplete = function() {
resolve();
};
transaction.onerror = function() {
reject(transaction.error);
};
callback(transaction.objectStore(storeName));
});
});
}
var idbKeyval = {
get: function(storeName, key) {
var req;
return withStore(storeName, 'readonly', function(store) {
req = store.get(key);
}).then(function() {
return req.result;
});
},
set: function(storeName, value) {
return withStore(storeName, 'readwrite', function(store) {
store.put(value);
});
},
delete: function(storeName, key) {
return withStore(storeName, 'readwrite', function(store) {
store.delete(key);
});
},
clear: function(storeName) {
return withStore(storeName, 'readwrite', function(store) {
store.clear();
});
},
keys: function(storeName) {
var keys = [];
return withStore(storeName, 'readonly', function(store) {
// This would be store.getAllKeys(), but it isn't supported by Edge or Safari.
// And openKeyCursor isn't supported by Safari.
(store.openKeyCursor || store.openCursor).call(store).onsuccess = function() {
if (!this.result) return;
keys.push(this.result.key);
this.result.continue();
};
}).then(function() {
return keys;
});
}
};
if (typeof module != 'undefined' && module.exports) {
module.exports = idbKeyval;
} else if (typeof define === 'function' && define.amd) {
define('idbKeyval', [], function() {
return idbKeyval;
});
} else {
self.idbKeyval = idbKeyval;
}
}());