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