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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
// ==========================================================================
// Event utils
// ==========================================================================
import is from './is';
// Check for passive event listener support
// https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md
// https://www.youtube.com/watch?v=NPM6172J22g
const supportsPassiveListeners = (() => {
// Test via a getter in the options object to see if the passive property is accessed
let supported = false;
try {
const options = Object.defineProperty({}, 'passive', {
get() {
supported = true;
return null;
},
});
window.addEventListener('test', null, options);
window.removeEventListener('test', null, options);
} catch (e) {
// Do nothing
}
return supported;
})();
// Toggle event listener
export function toggleListener(
element,
event,
callback,
toggle = false,
passive = true,
capture = false,
) {
// Bail if no element, event, or callback
if (
!element ||
!('addEventListener' in element) ||
is.empty(event) ||
!is.function(callback)
) {
return;
}
// Allow multiple events
const events = event.split(' ');
// Build options
// Default to just the capture boolean for browsers with no passive listener support
let options = capture;
// If passive events listeners are supported
if (supportsPassiveListeners) {
options = {
// Whether the listener can be passive (i.e. default never prevented)
passive,
// Whether the listener is a capturing listener or not
capture,
};
}
// If a single node is passed, bind the event listener
events.forEach(type => {
if (this && this.eventListeners && toggle) {
// Cache event listener
this.eventListeners.push({ element, type, callback, options });
}
element[toggle ? 'addEventListener' : 'removeEventListener'](
type,
callback,
options,
);
});
}
// Bind event handler
export function on(
element,
events = '',
callback,
passive = true,
capture = false,
) {
toggleListener.call(
this,
element,
events,
callback,
true,
passive,
capture,
);
}
// Unbind event handler
export function off(
element,
events = '',
callback,
passive = true,
capture = false,
) {
toggleListener.call(
this,
element,
events,
callback,
false,
passive,
capture,
);
}
// Bind once-only event handler
export function once(
element,
events = '',
callback,
passive = true,
capture = false,
) {
function onceCallback(...args) {
off(element, events, onceCallback, passive, capture);
callback.apply(this, args);
}
toggleListener.call(
this,
element,
events,
onceCallback,
true,
passive,
capture,
);
}
// Trigger event
export function triggerEvent(element, type = '', bubbles = false, detail = {}) {
// Bail if no element
if (!is.element(element) || is.empty(type)) {
return;
}
// Create and dispatch the event
const event = new CustomEvent(type, {
bubbles,
detail: Object.assign({}, detail, {
plyr: this,
}),
});
// Dispatch the event
element.dispatchEvent(event);
}
// Unbind all cached event listeners
export function unbindListeners() {
if (this && this.eventListeners) {
this.eventListeners.forEach(item => {
const { element, type, callback, options } = item;
element.removeEventListener(type, callback, options);
});
this.eventListeners = [];
}
}
// Run method when / if player is ready
export function ready() {
return new Promise(
resolve =>
this.ready
? setTimeout(resolve, 0)
: on.call(this, this.elements.container, 'ready', resolve),
).then(() => {});
}
|
