angular-ui/ui-grid

Arrow up from initial infinite scroll paint does not go up a row

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#5,031 建立於 2016年1月26日

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 (1 留言) (0 反應) (0 負責人)JavaScript (5,395 star) (2,496 fork)batch import
grid-infinite-scrollhelp wantedtype: bug

描述

When you initially load infinite scroll grid that has more data above, if you are on the first row and arrow up, more data is loaded and you see the scroll thumb move down, but it does not move up a row. you have to subsequently arrow up again to get go up the row.

In this plunker: http://plnkr.co/edit/nhP6CpaL9EJM3orGL41O?p=preview

  1. Click on the first row, first column.
  2. Hit the arrow up key. Note that the scroll thumb moves down indicating that more data loaded, but it did not go up a row. A subsequent pressing of the up arrow key moves you up the row.

貢獻者指南

技術棧
javascript
領域
frontend
議題類型
bug
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。
needs investigation
前置要求
Understanding of infinite scrollKeyboard event handling
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。
25
研究方向
Investigate the infinite scroll implementation in ui grid, focusing on the keyboard navigation handler for the arrow up key when the user is at the first row. The issue is that pressing arrow up loads more data but does not move the selection up a row; a second press is needed. Look at the scroll event handling and row focus logic, particularly in files related to grid keyboard navigation and infinite scroll.