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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
// ==========================================================================
// Plyr Captions
// ==========================================================================
import support from './support';
import utils from './utils';
import controls from './controls';
const captions = {
// Setup captions
setup() {
// Requires UI support
if (!this.supported.ui) {
return;
}
// Set default language if not set
const stored = this.storage.get('language');
if (!utils.is.empty(stored)) {
this.captions.language = stored;
}
if (utils.is.empty(this.captions.language)) {
this.captions.language = this.config.captions.language.toLowerCase();
}
// Set captions enabled state if not set
if (!utils.is.boolean(this.captions.active)) {
const active = this.storage.get('captions');
if (utils.is.boolean(active)) {
this.captions.active = active;
} else {
this.captions.active = this.config.captions.active;
}
}
// Only Vimeo and HTML5 video supported at this point
if (!this.isVideo || this.isYouTube || (this.isHTML5 && !support.textTracks)) {
// Clear menu and hide
if (this.config.controls.includes('settings') && this.config.settings.includes('captions')) {
controls.setCaptionsMenu.call(this);
}
return;
}
// Inject the container
if (!utils.is.element(this.elements.captions)) {
this.elements.captions = utils.createElement('div', utils.getAttributesFromSelector(this.config.selectors.captions));
utils.insertAfter(this.elements.captions, this.elements.wrapper);
}
// Set the class hook
utils.toggleClass(this.elements.container, this.config.classNames.captions.enabled, !utils.is.empty(captions.getTracks.call(this)));
// If no caption file exists, hide container for caption text
if (utils.is.empty(captions.getTracks.call(this))) {
return;
}
// Set language
captions.setLanguage.call(this);
// Enable UI
captions.show.call(this);
// Set available languages in list
if (this.config.controls.includes('settings') && this.config.settings.includes('captions')) {
controls.setCaptionsMenu.call(this);
}
},
// Set the captions language
setLanguage() {
// Setup HTML5 track rendering
if (this.isHTML5 && this.isVideo) {
captions.getTracks.call(this).forEach(track => {
// Remove previous bindings
utils.on(track, 'cuechange', event => captions.setCue.call(this, event));
// Turn off native caption rendering to avoid double captions
// eslint-disable-next-line
track.mode = 'hidden';
});
// Get current track
const currentTrack = captions.getCurrentTrack.call(this);
// Check if suported kind
if (utils.is.track(currentTrack)) {
// If we change the active track while a cue is already displayed we need to update it
if (Array.from(currentTrack.activeCues || []).length) {
captions.setCue.call(this, currentTrack);
}
}
} else if (this.isVimeo && this.captions.active) {
this.embed.enableTextTrack(this.language);
}
},
// Get the tracks
getTracks() {
// Return empty array at least
if (utils.is.nullOrUndefined(this.media)) {
return [];
}
// Only get accepted kinds
return Array.from(this.media.textTracks || []).filter(track => [
'captions',
'subtitles',
].includes(track.kind));
},
// Get the current track for the current language
getCurrentTrack() {
return captions.getTracks.call(this).find(track => track.language.toLowerCase() === this.language);
},
// Display active caption if it contains text
setCue(input) {
// Get the track from the event if needed
const track = utils.is.event(input) ? input.target : input;
const active = track.activeCues[0];
const currentTrack = captions.getCurrentTrack.call(this);
// Only display current track
if (track !== currentTrack) {
return;
}
// Display a cue, if there is one
if (utils.is.cue(active)) {
captions.setText.call(this, active.getCueAsHTML());
} else {
captions.setText.call(this, null);
}
utils.dispatchEvent.call(this, this.media, 'cuechange');
},
// Set the current caption
setText(input) {
// Requires UI
if (!this.supported.ui) {
return;
}
if (utils.is.element(this.elements.captions)) {
const content = utils.createElement('span');
// Empty the container
utils.emptyElement(this.elements.captions);
// Default to empty
const caption = !utils.is.nullOrUndefined(input) ? input : '';
// Set the span content
if (utils.is.string(caption)) {
content.textContent = caption.trim();
} else {
content.appendChild(caption);
}
// Set new caption text
this.elements.captions.appendChild(content);
} else {
this.debug.warn('No captions element to render to');
}
},
// Display captions container and button (for initialization)
show() {
// If there's no caption toggle, bail
if (!utils.is.element(this.elements.buttons.captions)) {
return;
}
// Try to load the value from storage
let active = this.storage.get('captions');
// Otherwise fall back to the default config
if (!utils.is.boolean(active)) {
({ active } = this.config.captions);
} else {
this.captions.active = active;
}
if (active) {
utils.toggleClass(this.elements.container, this.config.classNames.captions.active, true);
utils.toggleState(this.elements.buttons.captions, true);
}
},
};
export default captions;
|
