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Hook up PSES events to PSEventManager

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#613 4 則留言 0 個 reaction 已指派 0 人 在 GitHub 檢視

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評估

難度
5/5
預估耗時
一週以上
新手友好度
25/100
Issue 類型
功能
描述清晰度
基本清楚
活躍度
停滯
技術堆疊
csharp, powershell
領域
tooling

研究方向

先追蹤元件註冊表中現有的 IMessageHandlers，並將提議的 Register-EditorEvent 行為與 Register-EngineEvent、PSEventSubscriber 和 PSEngineEvent 進行比較。定義事件名稱常數、訂閱者註冊、處理常式分派、runspace 排隊以及 EventArgs 輸出行為；完成的標準是多個 PowerShell 和編譯型語言處理常式可以共存，而不會取代現有的處理常式。

由索引模型根據 Issue 內容生成。

描述

Area-Language Server Issue-Enhancement

Right now the only way to register event/request handlers is to override them via IMessageHandlers from the component registry. This has a few issues

  1. As far as I can tell this only allows you to override handlers, not add to them. Doing this as part of an extension module would break existing functionality.

  2. These delegates are invoked from a thread that doesn't have a default runspace. This means if the delegate is a converted script block it will fail (and crash PSES)

I propose we add the following:

  1. Function or cmdlet Register-EditorEvent. This should work like Register-EngineEvent. It would take a SourceIdentifier as the event name and script block to register as a PSEventSubscriber. Ideally this would also include argument completion for event names.

  2. A class that holds constants with event names (see PSEngineEvent)

  3. Additional logic to existing handlers and other events to check for relevant event subscribers and if found generate the event.

  4. If the event/handler typically returns a value, a property would need to be added to the EventArgs to handle output (PowerShell eventing doesn't handle delegate output)

This would solve a few issues

  1. Extension modules could register additional handlers the same way in PowerShell and compiled languages

  2. Eventing should take care of all the runspace management and queuing of commands that would normally make this a huge pain. This would also allow the events to be ran in between sequence points of an in progress command.

  3. Allow multiple handlers for a single request/event

主要語言
C#
星號
767
分支
266
平均合併
3 天 16 小時
30 天內合併 PR
1

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  3. Fork 儲存庫，在一個分支上完成修改。
  4. 送出 Pull Request，並在描述裡引用這個 Issue 編號。

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