Code coverage report for sockjs-client/lib/reventtarget.js

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
 
1
13
 
13
1
 
13
3
 
13
13
 
10
 
13
 
 
1
11
 
 
11
1
 
10
10
10
8
 
6
 
2
 
 
 
 
1
103
 
 
 
 
 
 
 
 
103
96
 
103
 
 
4
4
9
 
 
 
 
1
 
'use strict';
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */
 
/* Simplified implementation of DOM2 EventTarget.
 *   http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget
 */
 
module.exports = REventTarget;
 
function REventTarget() {}
 
REventTarget.prototype.addEventListener = function (eventType, listener) {
    var arr;
 
    if (!this._listeners) {
         this._listeners = {};
    }
    if (!(eventType in this._listeners)) {
        this._listeners[eventType] = [];
    }
    arr = this._listeners[eventType];
    if (arr.indexOf(listener) === -1) {
        // Make a copy so as not to interfere with a current dispatchEvent.
        arr = arr.concat([listener]);
    }
    this._listeners[eventType] = arr;
};
 
REventTarget.prototype.removeEventListener = function (eventType, listener) {
    var arr,
        idx;
 
    if (!(this._listeners && (eventType in this._listeners))) {
        return;
    }
    arr = this._listeners[eventType];
    idx = arr.indexOf(listener);
    if (idx !== -1) {
        if (arr.length > 1) {
            // Make a copy so as not to interfer with a current dispatchEvent.
            this._listeners[eventType] = arr.slice(0, idx).concat( arr.slice(idx+1) );
        } else {
            delete this._listeners[eventType];
        }
    }
};
 
REventTarget.prototype.dispatchEvent = function (event) {
    var type = event.type,
        args = [].slice.call(arguments, 0),
        listeners,
        i;
 
    // TODO: This doesn't match the real behavior; per spec, onfoo get
    // their place in line from the /first/ time they're set from
    // non-null. Although WebKit bumps it to the end every time it's
    // set.
    if (this['on'+type]) {
        this['on'+type].apply(this, args);
    }
    if (this._listeners && type in this._listeners) {
        // Grab a reference to the listeners list. removeEventListener may
        // remove the list.
        listeners = this._listeners[type];
        for (i = 0; i < listeners.length; i++) {
            listeners[i].apply(this, args);
        }
    }
};
 
module.exports = REventTarget;