112 lines
3.1 KiB
JavaScript
112 lines
3.1 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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'use strict';
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const RESOURCE_NAME = 'pdf.js';
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const EXT_PREFIX = 'extensions.uriloader@pdf.js';
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let Cc = Components.classes;
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let Ci = Components.interfaces;
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let Cm = Components.manager;
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let Cu = Components.utils;
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Cu.import('resource://gre/modules/Services.jsm');
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function getBoolPref(pref, def) {
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try {
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return Services.prefs.getBoolPref(pref);
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} catch (ex) {
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return def;
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}
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}
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function setStringPref(pref, value) {
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let str = Cc['@mozilla.org/supports-string;1']
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.createInstance(Ci.nsISupportsString);
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str.data = value;
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Services.prefs.setComplexValue(pref, Ci.nsISupportsString, str);
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}
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function log(str) {
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if (!getBoolPref(EXT_PREFIX + '.pdfBugEnabled', false))
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return;
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dump(str + '\n');
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}
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// Register/unregister a class as a component.
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let Factory = {
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registrar: null,
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aClass: null,
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register: function(aClass) {
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if (this.aClass) {
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log('Cannot register more than one class');
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return;
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}
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this.registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
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this.aClass = aClass;
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var proto = aClass.prototype;
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this.registrar.registerFactory(proto.classID, proto.classDescription,
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proto.contractID, this);
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},
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unregister: function() {
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if (!this.aClass) {
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log('Class was never registered.');
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return;
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}
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var proto = this.aClass.prototype;
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this.registrar.unregisterFactory(proto.classID, this);
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this.aClass = null;
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},
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// nsIFactory::createInstance
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createInstance: function(outer, iid) {
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if (outer !== null)
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throw Cr.NS_ERROR_NO_AGGREGATION;
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return (new (this.aClass)).QueryInterface(iid);
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}
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};
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let pdfStreamConverterUrl = null;
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// As of Firefox 13 bootstrapped add-ons don't support automatic registering and
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// unregistering of resource urls and components/contracts. Until then we do
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// it programatically. See ManifestDirective ManifestParser.cpp for support.
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function startup(aData, aReason) {
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// Setup the resource url.
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var ioService = Services.io;
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var resProt = ioService.getProtocolHandler('resource')
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.QueryInterface(Ci.nsIResProtocolHandler);
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var aliasURI = ioService.newURI('content/', 'UTF-8', aData.resourceURI);
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resProt.setSubstitution(RESOURCE_NAME, aliasURI);
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// Load the component and register it.
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pdfStreamConverterUrl = aData.resourceURI.spec +
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'components/PdfStreamConverter.js';
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Cu.import(pdfStreamConverterUrl);
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Factory.register(PdfStreamConverter);
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}
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function shutdown(aData, aReason) {
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if (aReason == APP_SHUTDOWN)
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return;
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var ioService = Services.io;
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var resProt = ioService.getProtocolHandler('resource')
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.QueryInterface(Ci.nsIResProtocolHandler);
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// Remove the resource url.
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resProt.setSubstitution(RESOURCE_NAME, null);
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// Remove the contract/component.
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Factory.unregister();
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// Unload the converter
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Cu.unload(pdfStreamConverterUrl);
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pdfStreamConverterUrl = null;
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}
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function install(aData, aReason) {
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}
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function uninstall(aData, aReason) {
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setStringPref(EXT_PREFIX + '.database', '{}');
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}
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