Statum/example/HomeEntrypoint.vala

using Statum;
using Invercargill;
using Invercargill.DataStructures;

namespace Example {

    /**
     * Private data carried by the bump-counter action (strongly typed). The
     * framework seals/reads it via GObject introspection — no mapper.
     */
    public class CounterPrivate : Object {
        public int delta { get; set; }
    }

    /**
     * Entrypoint for the home page.
     *
     * Demonstrates authoring action references (one with typed private data) and
     * embedding them in state so the client can invoke them via `stm-action`,
     * then returning them with the fluent directive builder.
     */
    public class HomeEntrypoint : StatumEntrypoint {

        public override async DirectiveBuilder handle() throws GLib.Error {
            // A counter slot whose public data carries a `bump` action reference
            // sealed with typed private data ({delta: 1}).
            var counter_public = new PropertyDictionary();
            counter_public.set_native<int>("value", 0);
            var bump_private = new CounterPrivate();
            bump_private.delta = 1;
            counter_public["bump"] = action_registry
                .author_private<BumpCounterAction, CounterPrivate>(bump_private)
                .to_element();
            var counter_slot = state_service.new_slot(Scope.PAGE, new State() {
                type_name = "counter",
                public_data = counter_public,
                private_data = new PropertyDictionary()
            });

            // A page slot whose public data carries a private-less `login`
            // action reference.
            var page_public = new PropertyDictionary();
            page_public["login"] = action_registry.author<LoginAction>().to_element();
            var page_slot = state_service.new_slot(Scope.PAGE, new State() {
                type_name = "page",
                public_data = page_public,
                private_data = new PropertyDictionary()
            });

            return directives().set(counter_slot).set(page_slot);
        }
    }
}