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Allow children native scroll

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Partly uses @DEFusion's #459 pull-request. Closes #455
This commit is contained in:
DanielApt
2016-02-22 22:32:06 +00:00
parent 9580e08886
commit f14b6a0d47
2 changed files with 86 additions and 10 deletions
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src/js/plugin/handler/mouse-wheel.js
+13 -10
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@@ -55,20 +55,23 @@ function bindMouseWheelHandler(element, i) {
return [deltaX, deltaY];
}
function shouldBeConsumedByTextarea(deltaX, deltaY) {
var hoveredTextarea = element.querySelector('textarea:hover');
if (hoveredTextarea) {
var maxScrollTop = hoveredTextarea.scrollHeight - hoveredTextarea.clientHeight;
function shouldBeConsumedByChild(deltaX, deltaY) {
var child = element.querySelector('textarea:hover, .ps-child:hover');
if (child) {
console.log(child);
if (child.tagName !== 'TEXTAREA' && !window.getComputedStyle(child).overflow.match(/(scroll|auto)/)) {
return false;
}
var maxScrollTop = child.scrollHeight - child.clientHeight;
if (maxScrollTop > 0) {
if (!(hoveredTextarea.scrollTop === 0 && deltaY > 0) &&
!(hoveredTextarea.scrollTop === maxScrollTop && deltaY < 0)) {
if (!(child.scrollTop === 0 && deltaY > 0) && !(child.scrollTop === maxScrollTop && deltaY < 0)) {
return true;
}
}
var maxScrollLeft = hoveredTextarea.scrollLeft - hoveredTextarea.clientWidth;
var maxScrollLeft = child.scrollLeft - child.clientWidth;
if (maxScrollLeft > 0) {
if (!(hoveredTextarea.scrollLeft === 0 && deltaX < 0) &&
!(hoveredTextarea.scrollLeft === maxScrollLeft && deltaX > 0)) {
if (!(child.scrollLeft === 0 && deltaX < 0) && !(child.scrollLeft === maxScrollLeft && deltaX > 0)) {
return true;
}
}
@@ -82,7 +85,7 @@ function bindMouseWheelHandler(element, i) {
var deltaX = delta[0];
var deltaY = delta[1];
if (shouldBeConsumedByTextarea(deltaX, deltaY)) {
if (shouldBeConsumedByChild(deltaX, deltaY)) {
return;
}