keysNavigation.add(new UpToChangeCommand(patchKey.getParentKey(), 0, 'u'));
keysNavigation.add(new FileListCmd(0, 'f', PatchUtil.C.fileList()));
historyTable = new HistoryTable(this);
commitMessageBlock = new CommitMessageBlock();
topPanel = new FlowPanel();
add(topPanel);
noDifference = new Label(PatchUtil.C.noDifference());