104 lines
3.2 KiB
JavaScript
104 lines
3.2 KiB
JavaScript
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
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/* Copyright 2014 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* jshint esnext:true */
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/* globals Components, Services, XPCOMUtils, PdfjsContentUtils,
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PdfjsContentUtils, PdfStreamConverter, addMessageListener */
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'use strict';
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(function contentScriptClosure() {
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// we need to use closure here -- we are running in the global context
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cm = Components.manager;
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const Cu = Components.utils;
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const Cr = Components.results;
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Cu.import('resource://gre/modules/XPCOMUtils.jsm');
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Cu.import('resource://gre/modules/Services.jsm');
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var isRemote = Services.appinfo.processType ===
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Services.appinfo.PROCESS_TYPE_CONTENT;
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// Factory that registers/unregisters a constructor as a component.
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function Factory() {
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}
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Factory.prototype = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIFactory]),
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_targetConstructor: null,
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register: function register(targetConstructor) {
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this._targetConstructor = targetConstructor;
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var proto = targetConstructor.prototype;
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var registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
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registrar.registerFactory(proto.classID, proto.classDescription,
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proto.contractID, this);
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},
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unregister: function unregister() {
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var proto = this._targetConstructor.prototype;
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var registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
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registrar.unregisterFactory(proto.classID, this);
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this._targetConstructor = null;
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},
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// nsIFactory
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createInstance: function createInstance(aOuter, iid) {
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if (aOuter !== null) {
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throw Cr.NS_ERROR_NO_AGGREGATION;
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}
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return (new (this._targetConstructor)()).QueryInterface(iid);
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},
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// nsIFactory
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lockFactory: function lockFactory(lock) {
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// No longer used as of gecko 1.7.
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throw Cr.NS_ERROR_NOT_IMPLEMENTED;
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}
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};
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var pdfStreamConverterFactory = new Factory();
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function startup() {
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Cu.import('resource://pdf.js/PdfjsContentUtils.jsm');
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PdfjsContentUtils.init();
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Cu.import('resource://pdf.js/PdfStreamConverter.jsm');
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pdfStreamConverterFactory.register(PdfStreamConverter);
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}
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function shutdown() {
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// Remove the contract/component.
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pdfStreamConverterFactory.unregister();
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// Unload the converter
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Cu.unload('resource://pdf.js/PdfStreamConverter.jsm');
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PdfjsContentUtils.uninit();
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Cu.unload('resource://pdf.js/PdfjsContentUtils.jsm');
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}
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if (isRemote) {
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startup();
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addMessageListener('PDFJS:Child:shutdown', function (e) {
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shutdown();
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});
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}
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})();
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