The Tor Browser: b2g/components/ActivitiesGlue.js@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 "use strict"

     7 const Cc = Components.classes;

     8 const Ci = Components.interfaces;

     9 const Cu = Components.utils;

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

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

    14 XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",

    15                                   "resource://gre/modules/SystemAppProxy.jsm");

    17 function ActivitiesDialog() {

    18   this._id = 0;

    20   this.activities = [];

    21 }

    23 ActivitiesDialog.prototype = {

    24   run: function ap_run() {

    25     let id = "activity-choice" + this._id++;

    26     let activity = this.activities.shift();

    28     let choices = [];

    29     activity.list.forEach(function(item) {

    30       choices.push({ manifest: item.manifest, icon: item.icon });

    31     });

    34     // Keep up the frond-end of an activity choice. The messages contains

    35     // a list of {names, icons} for applications able to handle this particular

    36     // activity. The front-end should display a UI to pick one.

    37     let detail = {

    38       type: "activity-choice",

    39       id: id,

    40       name: activity.name,

    41       choices: choices

    42     };

    44     // Listen the resulting choice from the front-end. If there is no choice,

    45     // let's return -1, which means the user has cancelled the dialog.

    46     SystemAppProxy.addEventListener("mozContentEvent", function act_getChoice(evt) {

    47       if (evt.detail.id != id)

    48         return;

    50       SystemAppProxy.removeEventListener("mozContentEvent", act_getChoice);

    51       activity.callback.handleEvent(evt.detail.value !== undefined

    52                                       ? evt.detail.value

    53                                       : -1);

    54     });

    56     SystemAppProxy.dispatchEvent(detail);

    57   },

    59   chooseActivity: function ap_chooseActivity(aName, aActivities, aCallback) {

    60     this.activities.push({

    61       name: aName,

    62       list: aActivities,

    63       callback: aCallback

    64     });

    65     Services.tm.currentThread.dispatch(this, Ci.nsIEventTarget.DISPATCH_NORMAL);

    66   },

    68   classID: Components.ID("{70a83123-7467-4389-a309-3e81c74ad002}"),

    70   QueryInterface: XPCOMUtils.generateQI([Ci.nsIActivityUIGlue, Ci.nsIRunnable])

    71 }

    73 this.NSGetFactory = XPCOMUtils.generateNSGetFactory([ActivitiesDialog]);

The Tor Browser / file revision