palantir/blueprint

Overflow list: add option to keep children mounted

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#3,016 建立於 2018年10月11日

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Package: coreType: feature requesthelp wanted

描述

Environment

  • Package version(s): 3.7.0

Feature request

Current overflow list removes children from DOM when its invisible, and they will be loaded again if they be visible again.

Sometimes the operation of remove and create elements costs too much performance and affects other components, like css animation.

If there is an option that allows keep children in the DOM tree (e.g. just set display: none to them), overflow list will have better performance.

貢獻者指南

技術棧
typescriptreacthtmlcss
領域
frontendperformance
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
React component lifecycleCSS display property
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
40
研究方向
Investigate the OverflowList component in src/components/overflow list/overflowList.tsx. Currently, children are conditionally rendered based on visibility. To keep children mounted, modify the logic to always render children but toggle visibility using CSS display: none. Consider adding a new prop like `keepChildrenMounted` (boolean) to enable this behavior. Ensure that the component still correctly calculates overflow dimensions. Refer to existing tests in the same directory for guidance.
Overflow list: add option to keep children mounted · palantir/blueprint#3016 | Good First Issue