We need to provide some additional controls and a custom layout on the FileHistoryPanel.
As I learn from previous posts, it is not possible to add things like a Combobox to the toolbar of the default FileHistoryPanel implementation. Is this still true?
Perhaps we can have a custom implementation of the FileHistoryPanel interface. But how can we plug in this implementation to the IntelliJ framework so that the AbstractVcsHelperImpl.showFileHistory() method uses this implementation instead of the default one?