Photo Viewer DB Interface

IndexedDB interface for WMEPIE Photo Viewer tool

Ce script ne devrait pas être installé directement. C'est une librairie créée pour d'autres scripts. Elle doit être inclus avec la commande // @require https://update.greasyfork.org/scripts/375202/651025/Photo%20Viewer%20DB%20Interface.js 

// ==UserScript==
// @name         Photo Viewer DB Interface
// @namespace    https://greasyfork.org/en/users/166843-wazedev
// @version      2018.12.05.01
// @description  IndexedDB interface for WMEPIE Photo Viewer tool
// @author       WazeDev
// @include      /^https:\/\/(www|beta)\.waze\.com\/(?!user\/)(.{2,6}\/)?editor\/?.*$/
// @license      GNU GPLv3
// @grant        none
// ==/UserScript==


(function() {
  'use strict';
  var pvdb;

  function getDB() {
    if (!pvdb) {
      pvdb= new Promise(function(resolve, reject) {
        var openreq = indexedDB.open('WMEPIEPhotoViewer', 1);

        openreq.onerror = function() {
          reject(openreq.error);
        };

        openreq.onupgradeneeded = function() {
          // First time setup: create an empty object store
          //openreq.result.createObjectStore(dbName, { keyPath: "placeID" });
		  if(!openreq.result.objectStoreNames.contains("Places")) {
			  openreq.result.createObjectStore("Places", { keyPath: "placeID" });
			  }
        };

        openreq.onsuccess = function() {
          resolve(openreq.result);
        };
      });
    }
    return pvdb;
  }

  function withStore(storeName, type, callback) {
    return getDB().then(function(pvdb) {
      return new Promise(function(resolve, reject) {
        var transaction = pvdb.transaction(storeName, type);
        transaction.oncomplete = function() {
          resolve();
        };
        transaction.onerror = function() {
          reject(transaction.error);
        };
        callback(transaction.objectStore(storeName));
      });
    });
  }

  var idbPVKeyval = {
    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 = idbPVKeyval ;
  } else if (typeof define === 'function' && define.amd) {
    define('idbPVKeyval ', [], function() {
      return idbPVKeyval ;
    });
  } else {
    self.idbPVKeyval = idbPVKeyval ;
  }
}());