jtulach commented on a change in pull request #2232:
URL: https://github.com/apache/netbeans/pull/2232#discussion_r463406452
##########
File path:
platform/openide.util.lookup/src/org/openide/util/lookup/ProxyLookup.java
##########
@@ -89,7 +110,96 @@ public synchronized String toString() {
}
return map.keySet();
}
-
+
+ /**
+ * A controller which allows the set of lookups being proxied to be
+ * set dynamically.
+ *
+ * @since 8.43
+ */
+ public static final class Controller {
+
+ private BiConsumer<? super Executor, ? super Lookup[]> consumer;
+
+ /**
+ * Create a controller with an initial set of lookups that will be
+ * proxied by a {@link ProxyLookup} this controller is passed to the
+ * constructor of.
+ * @param lookups An array of lookups
+ */
+ public Controller(Lookup... lookups) {
+ consumer = new InitialConsumer(lookups);
+ }
+
+ /**
+ * Create a controller with an initially empty set of lookups to
+ * proxy to.
+ */
+ public Controller() {
+ consumer = new InitialConsumer();
+ }
+
+ /**
+ * Set the lookups on the {@link ProxyLookup} this controller controls;
+ * if called before that ProxyLookup has been created, the lookup
+ * contents will be set during that ProxyLookup's constructor as if you
+ * had passed them to the constructor directly, but the executor
+ * parameter will be ignored (nothing will be listening to it while
it's
+ * in its constructor anyway).
+ *
+ * @param exe An executor to notify in
+ * @param lookups An array of Lookups to be proxied
+ */
+ public synchronized void setLookups(Executor exe, Lookup... lookups) {
+ consumer.accept(exe, lookups);
Review comment:
Throw whatever you prefer.
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