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fix(sidebar): reveal expanded tree items

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t8y2
2026-05-18 16:35:09 +08:00
parent 28f4aec50d
commit ab87de4054
4 changed files with 83 additions and 1 deletions
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apps/desktop/src/composables/useFlatTree.ts
+24
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@@ -29,3 +29,27 @@ export function flattenTree(nodes: TreeNode[]): FlatTreeNode[] {
export function shouldVirtualizeFlatTree(count: number): boolean {
return count > 0;
}
export function scrollTopForExpandedTreeNode(options: {
expandedIndex: number;
insertedRowCount: number;
currentScrollTop: number;
viewportHeight: number;
rowHeight?: number;
}): number {
const rowHeight = options.rowHeight ?? SIDEBAR_TREE_ROW_HEIGHT;
if (options.expandedIndex < 0 || options.insertedRowCount <= 0 || options.viewportHeight <= 0) {
return options.currentScrollTop;
}
const visibleRowCapacity = Math.max(1, Math.floor(options.viewportHeight / rowHeight) - 1);
const rowsToReveal = Math.min(options.insertedRowCount, visibleRowCapacity);
const expandedContentBottom = (options.expandedIndex + 1 + rowsToReveal) * rowHeight;
const viewportBottom = options.currentScrollTop + options.viewportHeight;
if (expandedContentBottom <= viewportBottom) {
return options.currentScrollTop;
}
return Math.max(0, expandedContentBottom - options.viewportHeight);
}