SortableJS/Sortable

Cannot drop over iframe (not into - but absolutely on top of an iframe)

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#1,388 创建于 2018年11月14日

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 (8 评论) (1 反应) (0 负责人)JavaScript (30,389 star) (3,731 fork)batch import
bughelp wanted

描述

Hey guys, I ran into a really weird bug in Chrome when you are sorting OVER an iframe via absolute positioned containers. You can start drag just fine but the dropzone is somehow "under" the iframe even though z-index is clearly in order.

See the following pen for example:

https://codepen.io/dolbex/pen/WYpPMq

贡献者指南

技术栈
javascript
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。
half day
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
basic knowledge of CSS z indexunderstanding of drag and drop eventsfamiliarity with iframe behavior
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。
50
研究方向
Investigate the issue by examining how Sortable handles drag events over iframes. The bug report indicates that the drop zone appears beneath the iframe despite correct z index, likely due to iframe capturing pointer events. Check the source code in the 'src' directory for event handling, especially dragenter, dragover, and drop handlers. Compare behavior across browsers; the issue is Chrome specific. Consider if a workaround like temporarily disabling pointer events on the iframe during drag could be explored. Also review existing comments for any attempted solutions.