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public class MouseClickAction extends AnAction {

    @Override
    public void actionPerformed(AnActionEvent e) {
        PsiClass psiClass=getPsiClassFromContext(e);
        new ToStringGenerator(psiClass).execute();

    }


    private PsiClass getPsiClassFromContext(AnActionEvent e) {
        PsiFile psiFile= e.getData(LangDataKeys.PSI_FILE);
        Editor editor= e.getData(PlatformDataKeys.EDITOR);
        if(psiFile==null||editor==null){
            e.getPresentation().setEnabled(false);
            return null;
        }
        int offset=editor.getCaretModel().getOffset();
        PsiElement elementAt=psiFile.findElementAt(offset);
        PsiClass psiClass= PsiTreeUtil.getParentOfType(elementAt,PsiClass.class);
        return psiClass;
    }

}