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Permalink: http://www.treeweb.es/u/974/ 01/02/2011

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1 (function(window){2 3  var _db = null;4  var _name = 'casper';5  var _store = 'StaticMap';6  var _version = 16;7 8  // Allow other browsers:9  window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;10 11  window.staticMap = {12  'open':function(callback) {13  var request = indexedDB.open(_name, _version);14 15  request.onupgradeneeded = function(event) {16  _db = event.target.result;17 18  // Remove all structures19  var i;20  for (i=0; i<_db.objectStoreNames.length; i++){21  _db.deleteObjectStore(_db.objectStoreNames[i]);22  }23 24  // Create new structures25  var objectStore = _db.createObjectStore(_store, { keyPath: "key" });26 27  callback(false);28  }29  30  request.onsuccess = function(event) {31  _db = event.target.result;32  callback(true);33  }34  },35  'get':function(key, callback) {36  var request = _db.transaction([_store], "readwrite").objectStore(_store).get(key);37  request.onsuccess = function(event) {38  if (typeof event.target.result == 'undefined') {39  callback(null);40  } else {41  callback(event.target.result.value);42  }43  };44  },45  'set':function(key, value, callback) {46  var transaction = _db.transaction([_store], "readwrite");47 48  transaction.onerror = function(event) {49  // Don't forget to handle errors!50  callback(false);51  };52 53  var objectStore = transaction.objectStore(_store);54 55  var request = objectStore.add({'key':key,'value':value});56 57  request.onsuccess = function(event) {58  callback(true);59  };60  },61  'unset':function(key, callback) {62  var request = _db.transaction([_store], "readwrite").objectStore(_store).delete(key);63  request.onsuccess = function(event) {64  callback(false);65  };66  }67  }68 69 }(this))
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