angular-ui/ui-grid

expandable unusable state

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#6,164 创建于 2017年4月19日

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 (0 评论) (0 反应) (0 负责人)JavaScript (5,395 star) (2,496 fork)batch import
help wantedseverity: performance

描述

The expandable grid gets into an unusable state when you expand a bottom row and scroll up.

This issue is more pronounced on my local project which has a sub-grid with many rows. It can be reproduced on the UI Grid tutorial page by expanding a couple bottom rows:

Go to expandable grid tutorial page: http://ui-grid.info/docs/#/tutorial/216_expandable_grid Scroll to the bottom and expand the last two rows, 498 and 499. Start scrolling up. Notice that half the rows are now missing and they do not return until scrolling. All the way back down to the bottom. Example from the tutorial.

Updated: Link to tutorial was incorrect (original was http://ui-grid.info/docs/#/tutorial/306_expandable_grid)

贡献者指南

技术栈
javascriptangular
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
无
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
40
研究方向
This bug occurs when expanding bottom rows and scrolling, causing rows to go missing. To fix, investigate the grid's virtual scrolling and row expansion logic. Look at the expandable grid tutorial example and the relevant source files in the ui grid repository, particularly the uiGridExpandable module and gridUtil for row height and viewport updates. Recreate the steps and trace the behavior to identify where the row visibility calculation fails.