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make collapsing/expanding the first header work again

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This commit is contained in:
Bruno Windels 2020-07-08 15:11:47 +02:00
parent a8085f4e3b
commit a361ac3f83
2 changed files with 14 additions and 9 deletions
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7
src/components/views/rooms/RoomSublist2.tsx
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@ -55,6 +55,7 @@ import StyledCheckbox from "../elements/StyledCheckbox";
const SHOW_N_BUTTON_HEIGHT = 32; // As defined by CSS
const RESIZE_HANDLE_HEIGHT = 4; // As defined by CSS
export const HEADER_HEIGHT = 32; // As defined by CSS
const MAX_PADDING_HEIGHT = SHOW_N_BUTTON_HEIGHT + RESIZE_HANDLE_HEIGHT;
@ -233,7 +234,11 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
const possibleSticky = target.parentElement;
const sublist = possibleSticky.parentElement.parentElement;
if (possibleSticky.classList.contains('mx_RoomSublist2_headerContainer_sticky')) {
const list = sublist.parentElement.parentElement;
// the scrollTop is capped at the height of the header in LeftPanel2
const isAtTop = list.scrollTop <= HEADER_HEIGHT;
const isSticky = possibleSticky.classList.contains('mx_RoomSublist2_headerContainer_sticky');
if (isSticky && !isAtTop) {
// is sticky - jump to list
sublist.scrollIntoView({behavior: 'smooth'});
} else {