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focus on visible elements

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This commit is contained in:
Shin'ya Ueoka 2018-01-15 21:56:10 +09:00
parent 03e7e333a3
commit d1a81a877f
3 changed files with 30 additions and 23 deletions
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24
src/content/scrolls.js
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@ -1,3 +1,5 @@
import * as doms from 'shared/utils/dom';
const SCROLL_DELTA_X = 48;
const SCROLL_DELTA_Y = 48;
const SMOOTH_SCROLL_DURATION = 150;
@ -5,25 +7,6 @@ const SMOOTH_SCROLL_DURATION = 150;
// dirty way to store scrolling state on globally
let scrolling = [false];
const isVisible = (element) => {
let rect = element.getBoundingClientRect();
if (rect.width === 0 || rect.height === 0) {
return false;
}
if (rect.right < 0 && rect.bottom < 0) {
return false;
}
if (window.innerWidth < rect.left && window.innerHeight < rect.top) {
return false;
}
let { display, visibility } = window.getComputedStyle(element);
if (display === 'none' || visibility === 'hidden') {
return false;
}
return true;
};
const isScrollableStyle = (element) => {
let { overflowX, overflowY } = window.getComputedStyle(element);
return !(overflowX !== 'scroll' && overflowX !== 'auto' &&
@ -44,8 +27,7 @@ const findScrollable = (element) => {
return element;
}
let children = Array.prototype
.filter.call(element.children, e => isVisible(e));
let children = Array.from(element.children).filter(doms.isVisible);
for (let child of children) {
let scrollable = findScrollable(child);
if (scrollable) {