CustomEditorProvider Cannot Saved file through function "document.save()"

[SunnyFitz]

Bug Description:

document.save() in CustomEditorProvider cannot working properly

Steps to Reproduce:

1. Create a new file worked on CustomEditorProvider
2. make a change on editor area
3. use Ctrl + S to save file (I used acquireTheiaApi , Created a socket to send message to call document.save on my CustomEditorProvider ), which has called save function but not success
4. click other area （resource explorer or editor title bar ） or open file in code editor and custom editor， than use Ctrl+S to call document.save and it worked

• Operating System: Linuxmint
• Theia Version: 1.12.0-next.9f13354e

[vince-fugnitto]

cc @danarad05 perhaps you can help, or understand why it may not work this way.

[SunnyFitz]

i canceled keyevent in js which run in webview . Then Ctrl + S can work properly.

but customEditor cannot active theia.workspace.onDidChangeActiveTextEditor, so i cannot get customEditor focus changed event.
Is there hava others way to get focused status of customEditor ?

[danarad05]

@SunnyFitz
Thanks for letting us know of issue. Could you please add your example project and a short screen shots video of scenario so I could reproduce issue.
Thanks

[amos42]

This problem does not occur in v1.13.0.
This problem has occurred since v1.14.0, and the problem persists in v1.16.0.