In An Inspector Calls, how is Gerald presented?

Gerald Croft is presented as generally a well-meaning, but rather weak young man. He's dominated by his strong-willed father, who strongly disapproves of his engagement to Sheila. Gerald rejects the money-grubbing value system of his father but lacks the strength of character to make a clean break. He knows that without his father's financial support, he won't be able to make it on his own. So he leads the life of a dissolute man-about-town, which indirectly leads to Daisy Renton's death.
Gerald is genuinely upset at what happened to Daisy, but his relationship with her was exploitative, based as it was on a master-servant dynamic. Despite his bitter tears, Gerard's instinct for self-preservation soon kicks in. He goes out of his way to prove that Inspector Goole's a phony, which indicates that he's not prepared to live with the consequences of his actions. Instead of manning up and facing the music he's trying to wheedle his way out of his responsibilities by attempting to discredit the Inspector. Despite everything, Gerald has shown that he's not prepared to change, and has learned absolutely nothing.