擬似Chrome URLを作成してXULを開けるようにする

pseudoChromeProtocolHandler.js

/*
 @license MPL 1.1/GPL 2.0/LGPL 2.1
 */

const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
const UUID = "{9362f799-ce76-4d7c-9335-396b1c7870a6}";

Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Services", "resource://gre/modules/Services.jsm");

var PseudoChromeProtocolHandler;

installProtocolHandler(rootFile);

function installProtocolHandler (aRootFile) {

  var rootSpec = aRootFile.isDirectory() ?
                 Services.io.newFileURI(aRootFile).spec :
                 "jar:" + Services.io.newFileURI(aRootFile).spec + "!/";

  PseudoChromeProtocolHandler = {
    scheme: "pseudo-chrome",
    defaultPort: -1,
    protocolFlags: Ci.nsIProtocolHandler.URI_DANGEROUS_TO_LOAD |
                   Ci.nsIProtocolHandler.URI_IS_LOCAL_RESOURCE |
                   Ci.nsIProtocolHandler.URI_NORELATIVE |
                   Ci.nsIProtocolHandler.URI_NOAUTH,
    get system_principal() {
      delete this.system_principal;
      return this.system_principal = Cc["@mozilla.org/scriptsecuritymanager;1"].
                                     getService(Ci.nsIScriptSecurityManager).
                                     getSystemPrincipal();
    },
    newURI: function PC_newURI(aSpec, aOriginCharset, aBaseUri) {
      let uri = Cc["@mozilla.org/network/simple-uri;1"].createInstance(Ci.nsIURI);
      uri.spec = aSpec;
      return uri;
    },
    newChannel: function PC_newChannel(aURI) {
      Services.console.logStringMessage(rootSpec + aURI.path);
      let url = rootSpec + aURI.path.substr(2);
      let ch = Services.io.newChannel(url, null, null);
      ch.originalURI = aURI;
      ch.owner = this.system_principal;
      return ch;
    },
    allowPort: function PC_allowPort(aPort, aScheme) {
      return false;
    },
    QueryInterface: XPCOMUtils.generateQI([Ci.nsIProtocolHandler]),
    classID: Components.ID(UUID),
    factory: {
      createInstance: function PC_createInstance(aOuter, aIID) {
        if (aOuter) {
          throw Components.results.NS_ERROR_NO_AGGREGATION;
        }
        return PseudoChromeProtocolHandler.QueryInterface(aIID);
      },
      lockFactory: function BNPH_lockFactory(aLock) {
        throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
      },
      QueryInterface: XPCOMUtils.generateQI([Components.interfaces.nsIFactory])
    },
  };

  var registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
  registrar.registerFactory(Components.ID(UUID),
                            "PseudoChromeProtocolHandler",
                            "@mozilla.org/network/protocol;1?name=pseudo-chrome",
                            PseudoChromeProtocolHandler.factory);
}

function uninstallProtocolHandler () {
  if ("@mozilla.org/network/protocol;1?name=pseudo-chrome" in Cc) {
    var registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
    registrar.unregisterFactory(Components.ID(UUID),
                                PseudoChromeProtocolHandler.factory);
  }
}