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Add LazyListView.onRangeVisible optional callback

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Will be used in sync v3 to request different parts of the room list.
This commit is contained in:
Kegan Dougal 2021-11-23 11:16:09 +00:00
parent c6c0fb93fb
commit 63b3c6c909
2 changed files with 8 additions and 1 deletions
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6
src/platform/web/ui/general/LazyListView.js
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@ -72,11 +72,12 @@ class ItemRange {
}
export class LazyListView extends ListView {
constructor({itemHeight, overflowMargin = 5, overflowItems = 20,...options}, childCreator) {
constructor({itemHeight, onRangeVisible, overflowMargin = 5, overflowItems = 20,...options}, childCreator) {
super(options, childCreator);
this._itemHeight = itemHeight;
this._overflowMargin = overflowMargin;
this._overflowItems = overflowItems;
this._onRangeVisible = onRangeVisible; // function(ItemRange)
}
_getVisibleRange() {
@ -103,6 +104,9 @@ export class LazyListView extends ListView {
if (forceRender || !this._renderRange.contains(intersectRange)) {
this._renderRange = renderRange;
this._renderElementsInRange();
if (this._onRangeVisible) {
this._onRangeVisible(renderRange);
}
}
}

3
src/platform/web/ui/session/leftpanel/LeftPanelView.js
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@ -64,6 +64,9 @@ export class LeftPanelView extends TemplateView {
className: "RoomList",
itemHeight: 44,
list: vm.tileViewModels,
onRangeVisible: (range) => {
console.log(range);
},
},
tileVM => {
if (tileVM.kind === "invite") {