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// Copyright (c) 2020–2021 Teddy Wing
//
// This file is part of Immersive.
//
// Immersive is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Immersive is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Immersive. If not, see <https://www.gnu.org/licenses/>.
import logger from './logger';
import wait_element from './wait_element';
// Prevent credits from being minimised.
function init_mutation_observer (player) {
const observer = new MutationObserver(function(mutation_list) {
for (var i = 0; i < mutation_list.length; i++) {
const mutation = mutation_list[i];
const player = mutation.target as HTMLElement;
const video = player.querySelector('video') as HTMLElement;
// The `postplay` class minimises the movie. Remove it if it gets
// added to remain in full frame.
if (player.classList.contains('watch-video--player-view-minimized')) {
logger.debug('fullscreen_credits', 'init_mutation_observer()', 'Maximising');
player.classList.remove('watch-video--player-view-minimized');
// Resize the video to full frame. Otherwise it will shrink for
// a second until the click event kicks in.
video.style.height = null;
video.style.width = 'inherit';
// Activating playback controls makes them visible. Keep them
// hidden.
const style_el = document.createElement('style');
document.head.appendChild(style_el);
const stylesheet = style_el.sheet as CSSStyleSheet;
stylesheet.insertRule(`
.watch-video--back-container {
visibility: hidden !important;
}
.watch-video--bottom-controls-container {
display: none !important;
}`,
stylesheet.cssRules.length
);
// Playback controls are removed when postplay is activated.
// Re-enable them.
const click_area = player.children[0] as HTMLElement;
click_area.click();
// Once the player controls auto-hide themselves, remove our
// forced hiding so that the controls become user-accessible
// again.
setTimeout(
function() {
document.head.removeChild(style_el);
},
4000
);
return;
}
}
});
observer.observe(
player,
{
attributeFilter: ['class']
}
);
}
// Initialise the mutation observer when the video player becomes available.
export default function init () {
wait_element('.watch-video--player-view')
.then(function(player) {
init_mutation_observer(player);
});
}
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