linebender/druid

File Open dialog issue

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#115 创建于 2019年8月9日

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 (1 评论) (0 反应) (0 负责人)Rust (9,091 star) (567 fork)batch import
bughelp wanted

描述

I'm having issues combining File Open dialogs and timers in the druid-shell hello example.

Currently File Open dialogs block while holding a mutable borrow on the WinHandler until the dialog comes back with a result path. If a timer event triggers while the dialog is open, it panics with "already borrowed".

#95 mentions a possible solution. Are there other solutions to consider?

As a workaround for now I don't block when opening the dialog, immediately returning an Err(Error:Null) in get_file_dialog_path and I have a closure that runs with the actual result but I'm not sure where to send it. If a solution is decided upon I can take a shot at a PR.

贡献者指南

技术栈
rust
领域
desktop
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。
fresh
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
Rust borrowing fundamentalsdruid shell basics
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。
30
研究方向
The issue describes a conflict between file dialog blocking and timer events due to mutable borrow on WinHandler. The comment references issue #95 which may have a solution. The contributor could investigate #95 and propose a non blocking approach, such as using channels or callbacks. The workaround mentioned (immediately returning Err and using a closure) could be a starting point. Files to examine include the druid shell hello example and the get file dialog path method.