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Update resize handle for new designs 

The diff should have information on what this does and how it is supposed to work.
pull/21833/head
Travis Ralston 2020-06-09 19:48:31 -06:00
parent 7549d7d98a
commit 5f8b7187cf
4 changed files with 132 additions and 37 deletions
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71
res/css/views/rooms/_RoomSublist2.scss
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@ -16,10 +16,6 @@ limitations under the License.
// TODO: Rename to mx_RoomSublist during replacement of old component
// TODO: Just use the 3 selectors we need from this instead of importing it.
// We're going to end up with heavy modifications anyways.
@import "../../../../node_modules/react-resizable/css/styles.css";
.mx_RoomSublist2 {
// The sublist is a column of rows, essentially
display: flex;
@ -63,18 +59,83 @@ limitations under the License.
}
.mx_RoomSublist2_resizeBox {
margin-bottom: 4px; // for the resize handle
position: relative;
// Create another flexbox column for the tiles
display: flex;
flex-direction: column;
overflow: hidden;
.mx_RoomSublist2_showMoreButton {
height: 44px; // 1 room tile high
cursor: pointer;
font-size: $font-13px;
line-height: $font-18px;
color: $roomtile2-preview-color;
// This is the same color as the left panel background because it needs
// to occlude the lastmost tile in the list.
background-color: $header-panel-bg-color;
// Update the render() function for RoomSublist2 if these change
// Update the ListLayout class for minVisibleTiles if these change.
//
// At 24px high and 8px padding on the top this equates to 0.65 of
// a tile due to how the padding calculations work.
height: 24px;
padding-top: 8px;
// We force this to the bottom so it will overlap rooms as needed.
// We account for the space it takes up (24px) in the code through padding.
position: absolute;
bottom: 4px; // the height of the resize handle
left: 0;
right: 0;
// We create a flexbox to cheat at alignment
display: flex;
align-items: center;
.mx_RoomSublist2_showMoreButtonChevron {
position: relative;
width: 16px;
height: 16px;
margin-left: 12px;
margin-right: 18px;
mask-image: url('$(res)/img/feather-customised/chevron-down.svg');
mask-position: center;
mask-size: contain;
mask-repeat: no-repeat;
background: $roomtile2-preview-color;
}
}
// Class name comes from the ResizableBox component
// The hover state needs to use the whole sublist, not just the resizable box,
// so that selector is below and one level higher.
.react-resizable-handle {
cursor: ns-resize;
border-radius: 2px;
// This is positioned directly below the 'show more' button.
position: absolute;
bottom: 0;
left: 0;
right: 0;
// This is to visually align the bar in the list. Should be 12px from
// either side of the list. We define this after the positioning to
// trick the browser.
margin-left: 4px;
margin-right: 8px;
}
}
// The aforementioned selector for the hover state.
&:hover .react-resizable-handle {
opacity: 0.2;
// Update the render() function for RoomSublist2 if this changes
border: 2px solid $primary-fg-color;
}
}

76
src/components/views/rooms/RoomSublist2.tsx
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@ -178,46 +178,61 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
let content = null;
if (tiles.length > 0) {
const layout = this.props.layout; // to shorten calls
// TODO: Lazy list rendering
// TODO: Whatever scrolling magic needs to happen here
const layout = this.props.layout; // to shorten calls
const minTilesPx = layout.tilesToPixels(Math.min(tiles.length, layout.minVisibleTiles));
const maxTilesPx = layout.tilesToPixels(tiles.length);
const tilesPx = layout.tilesToPixels(Math.min(tiles.length, layout.visibleTiles));
const nVisible = Math.floor(layout.visibleTiles);
const visibleTiles = tiles.slice(0, nVisible);
// If we're hiding rooms, show a 'show more' button to the user. This button
// floats above the resize handle, if we have one present
let showMoreButton = null;
if (tiles.length > nVisible) {
// we have a cutoff condition - add the button to show all
const numMissing = tiles.length - visibleTiles.length;
showMoreButton = (
<div onClick={this.onShowAllClick} className='mx_RoomSublist2_showMoreButton'>
<span className='mx_RoomSublist2_showMoreButtonChevron'>
{/* set by CSS masking */}
</span>
<span className='mx_RoomSublist2_showMoreButtonText'>
{_t("Show %(count)s more", {count: numMissing})}
</span>
</div>
);
}
// Figure out if we need a handle
let handles = ['s'];
if (layout.visibleTiles >= tiles.length && tiles.length <= layout.minVisibleTiles) {
handles = []; // no handles, we're at a minimum
}
// TODO: This might need adjustment, however for now it is fine as a round.
const nVisible = Math.round(layout.visibleTiles);
const visibleTiles = tiles.slice(0, nVisible);
// We have to account for padding so we can accommodate a 'show more' button and
// the resize handle, which are pinned to the bottom of the container. This is the
// easiest way to have a resize handle below the button as otherwise we're writing
// our own resize handling and that doesn't sound fun.
//
// The layout class has some helpers for dealing with padding, as we don't want to
// apply it in all cases. If we apply it in all cases, the resizing feels like it
// goes backwards and can become wildly incorrect (visibleTiles says 18 when there's
// only mathematically 7 possible).
// If we're hiding rooms, show a 'show more' button to the user. This button
// replaces the last visible tile, so will always show 2+ rooms. We do this
// because if it said "show 1 more room" we had might as well show that room
// instead. We also replace the last item so we don't have to adjust our math
// on pixel heights, etc. It's much easier to pretend the button is a tile.
if (tiles.length > nVisible) {
// we have a cutoff condition - add the button to show all
const showMoreHeight = 32; // As defined by CSS
const resizeHandleHeight = 4; // As defined by CSS
// we +1 to account for the room we're about to hide with our 'show more' button
// this results in the button always being 1+, and not needing an i18n `count`.
const numMissing = (tiles.length - visibleTiles.length) + 1;
// The padding is variable though, so figure out what we need padding for.
let padding = 0;
if (showMoreButton) padding += showMoreHeight;
if (handles.length > 0) padding += resizeHandleHeight;
const minTilesPx = layout.calculateTilesToPixelsMin(tiles.length, layout.minVisibleTiles, padding);
const maxTilesPx = layout.tilesToPixelsWithPadding(tiles.length, padding);
const tilesWithoutPadding = Math.min(tiles.length, layout.visibleTiles);
const tilesPx = layout.calculateTilesToPixelsMin(tiles.length, tilesWithoutPadding, padding);
// TODO: CSS TBD
// TODO: Make this an actual tile
// TODO: This is likely to pop out of the list, consider that.
visibleTiles.splice(visibleTiles.length - 1, 1, (
<div
onClick={this.onShowAllClick}
className='mx_RoomSublist2_showMoreButton'
key='showall'
>
{_t("Show %(n)s more", {n: numMissing})}
</div>
));
}
content = (
<ResizableBox
width={-1}
@ -230,6 +245,7 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
className="mx_RoomSublist2_resizeBox"
>
{visibleTiles}
{showMoreButton}
</ResizableBox>
)
}

3
src/i18n/strings/en_EN.json
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@ -1134,7 +1134,8 @@
"Securely back up your keys to avoid losing them. <a>Learn more.</a>": "Securely back up your keys to avoid losing them. <a>Learn more.</a>",
"Not now": "Not now",
"Don't ask me again": "Don't ask me again",
"Show %(n)s more": "Show %(n)s more",
"Show %(count)s more|one": "Show %(count)s more",
"Show %(count)s more|other": "Show %(count)s more",
"Options": "Options",
"%(count)s unread messages including mentions.|other": "%(count)s unread messages including mentions.",
"%(count)s unread messages including mentions.|one": "1 unread mention.",

19
src/stores/room-list/ListLayout.ts
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@ -52,7 +52,24 @@ export class ListLayout {
}
public get minVisibleTiles(): number {
return 3;
// the .65 comes from the CSS where the show more button is
// mathematically 65% of a tile when floating.
return 4.65;
}
public calculateTilesToPixelsMin(maxTiles: number, n: number, possiblePadding: number): number {
// Only apply the padding if we're about to use maxTiles as we need to
// plan for the padding. If we're using n, the padding is already accounted
// for by the resizing stuff.
let padding = 0;
if (maxTiles < n) {
padding = possiblePadding;
}
return this.tilesToPixels(Math.min(maxTiles, n)) + padding;
}
public tilesToPixelsWithPadding(n: number, padding: number): number {
return this.tilesToPixels(n) + padding;
}
public tilesToPixels(n: number): number {