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// ==========================================================================
// Fullscreen wrapper
// https://developer.mozilla.org/en-US/docs/Web/API/Fullscreen_API#prefixing
// ==========================================================================
import utils from './utils';
const browser = utils.getBrowser();
function onChange() {
if (!this.enabled) {
return;
}
// Update toggle button
const button = this.player.elements.buttons.fullscreen;
if (utils.is.element(button)) {
utils.toggleState(button, this.active);
}
// Trigger an event
utils.dispatchEvent.call(this.player, this.target, this.active ? 'enterfullscreen' : 'exitfullscreen', true);
// Trap focus in container
if (!browser.isIos) {
utils.trapFocus.call(this.player, this.target, this.active);
}
}
function toggleFallback(toggle = false) {
// Store or restore scroll position
if (toggle) {
this.scrollPosition = {
x: window.scrollX || 0,
y: window.scrollY || 0,
};
} else {
window.scrollTo(this.scrollPosition.x, this.scrollPosition.y);
}
// Toggle scroll
document.body.style.overflow = toggle ? 'hidden' : '';
// Toggle class hook
utils.toggleClass(this.target, this.player.config.classNames.fullscreen.fallback, toggle);
// Toggle button and fire events
onChange.call(this);
}
class Fullscreen {
constructor(player) {
// Keep reference to parent
this.player = player;
// Get prefix
this.prefix = Fullscreen.prefix;
this.property = Fullscreen.property;
// Scroll position
this.scrollPosition = { x: 0, y: 0 };
// Register event listeners
// Handle event (incase user presses escape etc)
utils.on(document, this.prefix === 'ms' ? 'MSFullscreenChange' : `${this.prefix}fullscreenchange`, () => {
// TODO: Filter for target??
onChange.call(this);
});
// Fullscreen toggle on double click
utils.on(this.player.elements.container, 'dblclick', event => {
// Ignore double click in controls
if (utils.is.element(this.player.elements.controls) && this.player.elements.controls.contains(event.target)) {
return;
}
this.toggle();
});
// Update the UI
this.update();
}
// Determine if native supported
static get native() {
return !!(document.fullscreenEnabled || document.webkitFullscreenEnabled || document.mozFullScreenEnabled || document.msFullscreenEnabled);
}
// Get the prefix for handlers
static get prefix() {
// No prefix
if (utils.is.function(document.exitFullscreen)) {
return '';
}
// Check for fullscreen support by vendor prefix
let value = '';
const prefixes = [
'webkit',
'moz',
'ms',
];
prefixes.some(pre => {
if (utils.is.function(document[`${pre}ExitFullscreen`]) || utils.is.function(document[`${pre}CancelFullScreen`])) {
value = pre;
return true;
}
return false;
});
return value;
}
static get property() {
return this.prefix === 'moz' ? 'FullScreen' : 'Fullscreen';
}
// Determine if fullscreen is enabled
get enabled() {
return (
(Fullscreen.native || this.player.config.fullscreen.fallback) &&
this.player.config.fullscreen.enabled &&
this.player.supported.ui &&
this.player.isVideo
);
}
// Get active state
get active() {
if (!this.enabled) {
return false;
}
// Fallback using classname
if (!Fullscreen.native) {
return utils.hasClass(this.target, this.player.config.classNames.fullscreen.fallback);
}
const element = !this.prefix ? document.fullscreenElement : document[`${this.prefix}${this.property}Element`];
return element === this.target;
}
// Get target element
get target() {
return browser.isIos && this.player.config.fullscreen.iosNative ? this.player.media : this.player.elements.container;
}
// Update UI
update() {
if (this.enabled) {
this.player.debug.log(`${Fullscreen.native ? 'Native' : 'Fallback'} fullscreen enabled`);
} else {
this.player.debug.log('Fullscreen not supported and fallback disabled');
}
// Add styling hook to show button
utils.toggleClass(this.player.elements.container, this.player.config.classNames.fullscreen.enabled, this.enabled);
}
// Make an element fullscreen
enter() {
if (!this.enabled) {
return;
}
// iOS native fullscreen doesn't need the request step
if (browser.isIos && this.player.config.fullscreen.iosNative) {
if (this.player.playing) {
this.target.webkitEnterFullscreen();
}
} else if (!Fullscreen.native) {
toggleFallback.call(this, true);
} else if (!this.prefix) {
this.target.requestFullscreen();
} else if (!utils.is.empty(this.prefix)) {
this.target[`${this.prefix}Request${this.property}`]();
}
}
// Bail from fullscreen
exit() {
if (!this.enabled) {
return;
}
// iOS native fullscreen
if (browser.isIos && this.player.config.fullscreen.iosNative) {
this.target.webkitExitFullscreen();
this.player.play();
} else if (!Fullscreen.native) {
toggleFallback.call(this, false);
} else if (!this.prefix) {
(document.cancelFullScreen || document.exitFullscreen).call(document);
} else if (!utils.is.empty(this.prefix)) {
const action = this.prefix === 'moz' ? 'Cancel' : 'Exit';
document[`${this.prefix}${action}${this.property}`]();
}
}
// Toggle state
toggle() {
if (!this.active) {
this.enter();
} else {
this.exit();
}
}
}
export default Fullscreen;
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