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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * This indexedDB helper is a simplified version of sdk/indexed-db. It creates a DB with
+ * a principal dedicated to DevTools.
+ */
+
+const PSEUDOURI = "indexeddb://fx-devtools";
+const principaluri = Services.io.newURI(PSEUDOURI);
+const principal = Services.scriptSecurityManager.createContentPrincipal(
+ principaluri,
+ {}
+);
+
+// indexedDB is only exposed to document globals.
+// We are retrieving an instance from a Sandbox, which has to be loaded
+// from the system principal in order to avoid having wrappers around
+// all indexed DB objects.
+const systemPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
+const sandbox = Cu.Sandbox(systemPrincipal, {
+ wantGlobalProperties: ["indexedDB"],
+});
+const { indexedDB } = sandbox;
+
+module.exports = Object.freeze({
+ /**
+ * Only the standard version of indexedDB.open is supported.
+ */
+ open(name, version) {
+ const options = {};
+ if (typeof version === "number") {
+ options.version = version;
+ }
+ return indexedDB.openForPrincipal(principal, name, options);
+ },
+
+ /**
+ * Only the standard version of indexedDB.deleteDatabase is supported.
+ */
+ deleteDatabase(name) {
+ return indexedDB.deleteForPrincipal(principal, name);
+ },
+
+ cmp: indexedDB.cmp.bind(indexedDB),
+});