Publish Vulpes Preview 15 sources for desktop, Android and Tundra

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gaia/apps/fl/js/db.js

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+'use strict';
+/* global indexedDB */
+/* exported objectStore */
+
+var objectStore = (function() {
+  const DBNAME = 'LOCKEDCONTENT';
+  const DBVERSION = 1;
+  const STORENAMES = ['ringtones', 'wallpapers'];
+  var db;
+
+  function getStore(access, storeName, callback) {
+    if (STORENAMES.indexOf(storeName) === -1) {
+      throw Error('unknown object store name:', storeName);
+    }
+
+    if (db) {
+      callback(db.transaction(storeName, access).objectStore(storeName));
+    }
+    else {
+      initDB(function() { getStore(access, storeName, callback); });
+    }
+  }
+
+  function initDB(callback) {
+    var open = indexedDB.open(DBNAME, DBVERSION);
+
+    open.onsuccess = function() {
+      db = open.result;
+      callback();
+    };
+
+    open.onupgradeneeded = function() {
+      STORENAMES.forEach(function(storeName) {
+        open.result.createObjectStore(storeName, {
+          autoIncrement: true,
+          keyPath: 'id'
+        });
+      });
+    };
+
+    open.onerror = function() {
+      console.error('can not open database:', open.error.name);
+    };
+  }
+
+  return {
+    readonly: function readonly(storeName, callback) {
+      getStore('readonly', storeName, callback);
+    },
+    readwrite: function readwrite(storeName, callback) {
+      getStore('readwrite', storeName, callback);
+    }
+  };
+}());