@abaplint/runtime
Version:
Transpiler - Runtime
48 lines • 1.79 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ABAPEventing = void 0;
class ABAPEventing {
registrations = {};
setHandler(event, methods, forObject, activation) {
if (activation === false) {
throw new Error("ABAPEventing.setHandler: deactivation not supported, todo");
}
else if (methods.length === 0) {
throw new Error("ABAPEventing.setHandler: no methods provided");
}
if (!this.registrations[event.EVENT_CLASS]) {
this.registrations[event.EVENT_CLASS] = {};
}
if (!this.registrations[event.EVENT_CLASS][event.EVENT_NAME]) {
this.registrations[event.EVENT_CLASS][event.EVENT_NAME] = [];
}
const ref = forObject === "ALL" ? "ALL" : new WeakRef(forObject);
const handlers = this.registrations[event.EVENT_CLASS][event.EVENT_NAME];
// todo: tackle duplicates
handlers.push({
handlers: methods,
forObject: ref,
});
}
// todo: cleanup of dead WeakRefs
async raiseEvent(event, me, parameters) {
const handlers = this.registrations[event.EVENT_CLASS]?.[event.EVENT_NAME];
if (handlers === undefined) {
return;
}
for (const handler of handlers) {
if (handler.forObject === "ALL") {
for (const method of handler.handlers) {
await method(parameters);
}
}
else if (handler.forObject.deref() === me) {
for (const method of handler.handlers) {
await method(parameters);
}
}
}
}
}
exports.ABAPEventing = ABAPEventing;
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