How to preserve the state of a VirtualFile that does not physically exists in the FileSystem

IntelliJ Platform
1

I’m working on a JetBrains plugin where I open a custom editor tab that renders a web page using JCEF. This is done by attaching a VirtualFile to the editor, which then loads the JCEF browser component inside the editor tab. When the editor is moved (for example, to another split or to a different tab group), I need to transfer the state from old editor to the new one. An editor state is preserved in IntelliJ only if either of the following conditions are met (Please see: intellij-community/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/EditorHistoryManager.kt at 6e43b3144cc2a4b244c0bfcc5e7bdfa3c9a131e2 · JetBrains/intellij-community · GitHub):

  1. The VirtualFile used to render the WebView is an instance of the OptionallyIncluded interface, or

  2. The VirtualFile physically exists in the file system.

The problem I am facing is that, IntelliJ marked OptionallyIncluded interface as internal. So, I cannot use that. And since I am loading a JCEF component inside the editor by attaching it to a VirtualFile, it does not physically exists in the FileSystem.

Is there any work around for this?

2

Is it related to this topic? What task are you trying to solve?

3

Yes it is. After debugging the IntelliJ IDE, I found that the above stated issue was the root cause. Therefore, I would like to know if there is a way to preserve the state of a JCEF component that is rendered inside a VirtualFile since it does not physically exists in the file system.