IntelliJ Code Editor
Here is the first Screenshot of IntelliJ Code Editor.
API Editor Link
You can see this Class has an .api file. (Dynamic Elements)
Clicking on the API icon will open the API Editor.

Component Editor Link
For a Component Action the screen looks like:

The only problem might be when there is a long source code; for this situation the best way is to
use Command + Ctrl + UP Cursor will open the target popup for jumping to the target.

Simple Component Sample
HTML Part

Java Part

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