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Store navigation scroll position in session storage.

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This commit is contained in:
kovacsv 2023-01-14 23:51:04 +01:00
parent a96b2cb1d8
commit 4f79f11a4a
1 changed files with 19 additions and 1 deletions
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20
docs/static/script.js vendored
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@ -28,7 +28,18 @@ function Init (menuName)
let menuItem = document.getElementById ('nav-' + menuName);
if (menuItem !== null) {
menuItem.classList.add ('selected');
menuItem.scrollIntoView ({ block : 'center' });
let scrollSetFromStorage = false;
if (window.sessionStorage) {
let scrollPos = window.sessionStorage.getItem ('navScrollPos');
if (scrollPos) {
let navDiv = document.getElementById ('navigation');
navDiv.scrollTop = parseInt (scrollPos, 10);
scrollSetFromStorage = true;
}
}
if (!scrollSetFromStorage) {
menuItem.scrollIntoView ({ block : 'center' });
}
}
hljs.highlightAll ();
}
@ -52,3 +63,10 @@ window.addEventListener ('load', () => {
}
});
});
window.addEventListener ('beforeunload', (ev) => {
if (window.sessionStorage) {
let navDiv = document.getElementById ('navigation');
window.sessionStorage.setItem ('navScrollPos', navDiv.scrollTop.toString ());
}
});