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Scroll element into view if it's been moved off the screen

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This commit is contained in:
David Rowe 2018-05-05 12:03:18 +12:00
parent 03da2f0946
commit 1be948ee28
1 changed files with 4 additions and 1 deletions
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5
interface/resources/html/raiseAndLowerKeyboard.js
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@ -45,12 +45,15 @@
function scheduleBringToView(timeout) { function scheduleBringToView(timeout) {
setTimeout(function () { setTimeout(function () {
// If the element is not visible because the keyboard has been raised over the top of it, scroll it into view. // If the element is not visible because the keyboard has been raised over the top of it, scroll it up into view.
// If the element is not visible because the keyboard raising has moved it off screen, scroll it down into view.
var elementRect = document.activeElement.getBoundingClientRect(); var elementRect = document.activeElement.getBoundingClientRect();
var VISUAL_MARGIN = 3 var VISUAL_MARGIN = 3
var delta = elementRect.y + elementRect.height + VISUAL_MARGIN - window.innerHeight; var delta = elementRect.y + elementRect.height + VISUAL_MARGIN - window.innerHeight;
if (delta > 0) { if (delta > 0) {
window.scrollBy(0, delta); window.scrollBy(0, delta);
} else if (elementRect.y < VISUAL_MARGIN) {
window.scrollBy(0, elementRect.y - VISUAL_MARGIN);
} }
}, timeout); }, timeout);
} }