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Merge pull request #4931 from matrix-org/travis/room-list/sticky-headers

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Improve performance and stability in sticky headers for new room list
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Travis Ralston 2020-07-09 08:00:56 -06:00 • committed by GitHub
commit bd8e1f7198
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3 changed files with 107 additions and 60 deletions
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12
res/css/views/rooms/_RoomSublist2.scss
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@ -24,10 +24,6 @@ limitations under the License.
margin-left: 8px;
width: 100%;
&:first-child {
margin-top: 12px; // so we're not up against the search/filter
}
.mx_RoomSublist2_headerContainer {
// Create a flexbox to make alignment easy
display: flex;
@ -49,10 +45,15 @@ limitations under the License.
padding-bottom: 8px;
height: 24px;
// Hide the header container if the contained element is stickied.
// We don't use display:none as that causes the header to go away too.
&.mx_RoomSublist2_headerContainer_hasSticky {
height: 0;
}
.mx_RoomSublist2_stickable {
flex: 1;
max-width: 100%;
z-index: 2; // Prioritize headers in the visible list over sticky ones
// Create a flexbox to make ordering easy
display: flex;
@ -64,7 +65,6 @@ limitations under the License.
// when sticky scrolls instead of collapses the list.
&.mx_RoomSublist2_headerContainer_sticky {
position: fixed;
z-index: 1; // over top of other elements, but still under the ones in the visible list
height: 32px; // to match the header container
// width set by JS
}