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function requestFullscreen(element) {
if (element.requestFullscreen) {
element.requestFullscreen();
} else if (element.mozRequestFullScreen) {
element.mozRequestFullScreen();
} else if (element.webkitRequestFullscreen) {
element.webkitRequestFullscreen();
} else if (element.msRequestFullscreen) {
element.msRequestFullscreen();
}
}
function exitFullscreen() {
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
}
}
function getFullscreenElement() {
return (
document.fullscreenElement ||
document.msFullscreenElement ||
document.mozFullScreenElement ||
document.webkitFullscreenElement ||
null
);
}
function toggleFullscreen(element) {
if (getFullscreenElement()) {
exitFullscreen();
} else {
requestFullscreen(element);
}
}
function setup(container, fullscreenElement=null) {
const fullscreenLink = container.querySelector('.fullscreen-link');
if (fullscreenLink !== null) {
if (fullscreenElement === null) {
fullscreenElement = container.querySelector('.fullscreen-element');
}
fullscreenLink.addEventListener('click', (e) => {
toggleFullscreen(fullscreenElement);
e.preventDefault();
return false;
}, false);
}
const template = container.querySelector('template');
const templateContentContainer = container.querySelector('.template-content-container');
if (template !== null && templateContentContainer !== null) {
const mode = container.dataset.shadowMode;
const shadow = templateContentContainer.attachShadow({mode});
const containerStyles = document.querySelector('#container-styles');
shadow.appendChild(containerStyles.cloneNode(true));
const content = document.importNode(template.content, true);
setup(content);
shadow.appendChild(content);
}
}
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