void (@NotNull AnActionEvent e) { if (DiffUtil.isFromShortcut(e)) { // consume shortcut even if there are nothing to do - avoid calling some other action e.getPresentation().setEnabledAndVisible(true); return; } Presentation presentation = e.getPresentation(); Editor editor = e.getData(CommonDataKeys.EDITOR); ThreeSide side = getEditorSide(editor); if (side == null) { presentation.setEnabledAndVisible(false); return; } if (!isVisible(side)) { presentation.setEnabledAndVisible(false); return; } presentation.setText(getText(side)); presentation.setVisible(true); presentation.setEnabled(isSomeChangeSelected(side)); }