testing/specialpowers/content/MockPermissionPrompt.jsm
author Alfredo Yang <ayang@mozilla.com>
Sun, 09 Feb 2014 15:34:40 -0500
changeset 167787 b987d99d861ada90942361a4d5fa8d4048f79617
parent 159609 f7b049ca82a31b6d14ef879b83311831e9121dba
permissions -rw-r--r--
Bug 853356 - gUM video permisson prompt. r=fabrice, felipc, wjohnston, mrbkap, jimm, jesup, khuey, jsmith

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

this.EXPORTED_SYMBOLS = ["MockPermissionPrompt"];

const Cc = Components.classes;
const Ci = Components.interfaces;
const Cm = Components.manager;
const Cu = Components.utils;

const CONTRACT_ID = "@mozilla.org/content-permission/prompt;1";

Cu.import("resource://gre/modules/FileUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");

var registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
var oldClassID, oldFactory;
var newClassID = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator).generateUUID();
var newFactory = {
  createInstance: function(aOuter, aIID) {
    if (aOuter)
      throw Components.results.NS_ERROR_NO_AGGREGATION;
    return new MockPermissionPromptInstance().QueryInterface(aIID);
  },
  lockFactory: function(aLock) {
    throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
  },
  QueryInterface: XPCOMUtils.generateQI([Ci.nsIFactory])
};

this.MockPermissionPrompt = {
  init: function() {
    this.reset();
    if (!registrar.isCIDRegistered(newClassID)) {
      try {
        oldClassID = registrar.contractIDToCID(CONTRACT_ID);
        oldFactory = Cm.getClassObject(Cc[CONTRACT_ID], Ci.nsIFactory);
      } catch (ex) {
        oldClassID = "";
        oldFactory = null;
        dump("TEST-INFO | can't get permission prompt registered component, " +
            "assuming there is none");
      }
      if (oldFactory) {
        registrar.unregisterFactory(oldClassID, oldFactory);
      }
      registrar.registerFactory(newClassID, "", CONTRACT_ID, newFactory);
    }
  },
  
  reset: function() {
  },
  
  cleanup: function() {
    this.reset();
    if (oldFactory) {
      registrar.unregisterFactory(newClassID, newFactory);
      registrar.registerFactory(oldClassID, "", CONTRACT_ID, oldFactory);
    }
  },
};

function MockPermissionPromptInstance() { };
MockPermissionPromptInstance.prototype = {
  QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPermissionPrompt]),

  promptResult: Ci.nsIPermissionManager.UNKNOWN_ACTION,

  prompt: function(request) {

    let perms = request.types.QueryInterface(Ci.nsIArray);
    for (let idx = 0; idx < perms.length; idx++) {
      let perm = perms.queryElementAt(idx, Ci.nsIContentPermissionType);
      if (Services.perms.testExactPermissionFromPrincipal(
           request.principal, perm.type) != Ci.nsIPermissionManager.ALLOW_ACTION) {
        request.cancel();
        return;
      }
    }

    request.allow();
  }
};

// Expose everything to content. We call reset() here so that all of the relevant
// lazy expandos get added.
MockPermissionPrompt.reset();
function exposeAll(obj) {
  var props = {};
  for (var prop in obj)
    props[prop] = 'rw';
  obj.__exposedProps__ = props;
}
exposeAll(MockPermissionPrompt);
exposeAll(MockPermissionPromptInstance.prototype);