Source: "A Cmmunicative Grammar of English" by Geoffrey Leech and Jan Svartvik (p.328-329)
As you can see, the book says:
● Nominal to-fininitive clause as subject:
To say there is no afterlife would mean a rejection of religion.
● Nominal to-fininitive clause as direct object:
We want everyone to be happy.
● Nominal to-infinitive clause as subject complement:
The minister's first duty will be to stop inflation.
● Nominal to-infinitive clause as complement of an adjective:
I was very glad to help in this way.
The subject of a to-fininitive is normally introduced by for. A pronoun subject here has the objective form:
What I wanted waas for them to advance me the money.
Is it persuasive for an adjective to take a nominal complement directly? I thought the infinitive clause seems to be an adverbial, not a nominal because It seems to postmodify glad. I'm not sure of it, though. Is it like "worth" in the clause of "the view was worth it"?