update class name and references when renaming a Java file

[testforstephen]

Signed-off-by: Jinbo Wang jinbwan@microsoft.com

it requires eclipse-jdtls/eclipse.jdt.ls#1406

[testforstephen]

[fbricon]

@testforstephen so while this only works for a simple file rename within the same directory, any chance we can fix #641, i.e. when moving file to a different location?

[testforstephen]

Have a look at the moving case, but there is still some problem needed to fix.

Since the file event api at the client side will listen at file explorer operation and workspace edit, that means the file move event is probably from two sources: drag and drop at file explorer, move a CU through move refactoring. For the second operation, it's unnecessary to re-handle it in file event handler. Currently VS Code didn't provide the event source yet (there is a feature request for it microsoft/vscode#93470), the extension itself has to find a way to figure out whether to handle the event.

In the onDidRenameFiles event, we can do that through comparing the package declaration and file location. But the upstream JDT move refactoring implementation won't work in the didRenameFiles, because it requires the references update calculation to be done before the actual move happens. I'm still trying to modify the jdt code to see whether it can reach what you want.

On the other side, it's hard for the extension to detect the event source in the onWillRenameFiles event. If the vscode feature request is ready, we can handle the move case in the onWillRenameFiles event.