Intellij Plugin set text of current Document

Question

Is there a way to change the whole code in a file from a string? I mean there is a way to read everything in the Document but can I also replace the whole text?

The way with which you can read the Code in the Document:

SourceCodeString = e.getData(LangDataKeys.EDITOR).getDocument().getText();

So I'm basically trying to do the opposite of that.

Answer 1

Check the related documentation Safely Replacing Selected Text in the Document:

// Replace the selection with a fixed string.
// Must do this document change in a write action context.
WriteCommandAction.runWriteCommandAction(project, () ->
    document.replaceString(start, end, "editor_basics")
);