requestor parameter in VirtualFile operations

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Permanently deleted user

创建于 2017年02月21日 11:53

All write operations in VirtualFile need a "requestor" parameter, from the document I know it should be the caller of the operation and it could be anything but null (null has special meaning).

I use my class.this as the requestor, it works, anyway I still don't understand what it should be in most case and when it will be used in IDEA.

Thanks

2 条评论

Peter Gromov

创建于 2017年02月21日 13:30

It's just some user data to pass with the change. Some listeners use it to make decisions. There are 2 special values:

null for refresh events
"instanceof SavingRequestor" for save events

Everything else is at your discretion. Most clients pass "this" in it, just because they have to pass something.

Permanently deleted user

创建于 2017年02月21日 14:43

Thank you Peter.

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