зеркало из https://github.com/mozilla/gecko-dev.git
49 строки
1.5 KiB
JavaScript
49 строки
1.5 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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/**
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* This indexedDB helper is a simplified version of sdk/indexed-db. It creates a DB with
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* a principal dedicated to DevTools.
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*/
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const Services = require("Services");
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const PSEUDOURI = "indexeddb://fx-devtools";
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const principaluri = Services.io.newURI(PSEUDOURI);
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const principal =
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Services.scriptSecurityManager.createCodebasePrincipal(principaluri, {});
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/**
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* Create the DevTools dedicated DB, by relying on the real indexedDB object passed as a
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* parameter here.
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*
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* @param {IDBFactory} indexedDB
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* Real indexedDB object.
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* @return {Object} Wrapper object that implements IDBFactory methods, but for a devtools
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* specific principal.
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*/
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exports.createDevToolsIndexedDB = function(indexedDB) {
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return Object.freeze({
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/**
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* Only the standard version of indexedDB.open is supported.
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*/
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open(name, version) {
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const options = {};
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if (typeof version === "number") {
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options.version = version;
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}
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return indexedDB.openForPrincipal(principal, name, options);
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},
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/**
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* Only the standard version of indexedDB.deleteDatabase is supported.
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*/
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deleteDatabase(name) {
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return indexedDB.deleteForPrincipal(principal, name);
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},
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cmp: indexedDB.cmp.bind(indexedDB),
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});
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};
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