The Tor Browser: content/media/webvtt/WebVTTParserWrapper.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

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

     5 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");

     6 Components.utils.import("resource://gre/modules/vtt.jsm");

     8 var Ci = Components.interfaces;

    10 var WEBVTTPARSERWRAPPER_CID = "{acf6e493-0092-4b26-b172-241e375c57ab}";

    11 var WEBVTTPARSERWRAPPER_CONTRACTID = "@mozilla.org/webvttParserWrapper;1";

    13 function WebVTTParserWrapper()

    14 {

    15   // Nothing

    16 }

    18 WebVTTParserWrapper.prototype =

    19 {

    20   loadParser: function(window)

    21   {

    22     this.parser = new WebVTT.Parser(window,  new TextDecoder("utf8"));

    23   },

    25   parse: function(data)

    26   {

    27     // We can safely translate the string data to a Uint8Array as we are

    28     // guaranteed character codes only from \u0000 => \u00ff

    29     var buffer = new Uint8Array(data.length);

    30     for (var i = 0; i < data.length; i++) {

    31       buffer[i] = data.charCodeAt(i);

    32     }

    34     this.parser.parse(buffer);

    35   },

    37   flush: function()

    38   {

    39     this.parser.flush();

    40   },

    42   watch: function(callback)

    43   {

    44     this.parser.oncue = callback.onCue;

    45     this.parser.onregion = callback.onRegion;

    46     this.parser.onparsingerror = function(e) {

    47       // Passing the just the error code back is enough for our needs.

    48       callback.onParsingError(("code" in e) ? e.code : -1);

    49     };

    50   },

    52   convertCueToDOMTree: function(window, cue)

    53   {

    54     return WebVTT.convertCueToDOMTree(window, cue.text);

    55   },

    57   processCues: function(window, cues, overlay)

    58   {

    59     WebVTT.processCues(window, cues, overlay);

    60   },

    62   classDescription: "Wrapper for the JS WebVTT implementation (vtt.js)",

    63   classID: Components.ID(WEBVTTPARSERWRAPPER_CID),

    64   QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebVTTParserWrapper]),

    65   classInfo: XPCOMUtils.generateCI({

    66     classID:    WEBVTTPARSERWRAPPER_CID,

    67     contractID: WEBVTTPARSERWRAPPER_CONTRACTID,

    68     interfaces: [Ci.nsIWebVTTParserWrapper]

    69   })

    70 };

    72 this.NSGetFactory = XPCOMUtils.generateNSGetFactory([WebVTTParserWrapper]);

The Tor Browser / file revision