Register open URI handling when context is ready

Otherwise, LinkHandler plugins may get invoked during context creation,
before all services have finished initializing.

Author: ctrueden

src/main/java/org/scijava/links/DefaultLinkService.java

@@ -28,10 +28,13 @@
  */
 package org.scijava.links;
 
+import org.scijava.event.ContextCreatedEvent;
+import org.scijava.event.EventHandler;
 import org.scijava.plugin.AbstractHandlerService;
 import org.scijava.plugin.Plugin;
 import org.scijava.service.Service;
 
+import java.awt.Desktop;
 import java.net.URI;
 
 /**
@@ -41,5 +44,14 @@
  */
 @Plugin(type = Service.class)
 public class DefaultLinkService extends AbstractHandlerService<URI, LinkHandler> implements LinkService {
-    // NB: No implementation needed.
+
+	@EventHandler
+	private void onEvent(final ContextCreatedEvent evt) {
+		// Register URI handler with the desktop system, if possible.
+		if (!Desktop.isDesktopSupported()) return;
+		final Desktop desktop = Desktop.getDesktop();
+		if (!desktop.isSupported(Desktop.Action.APP_OPEN_URI)) return;
+		desktop.setOpenURIHandler(event -> handle(event.getURI()));
+	}
+
 }

src/main/java/org/scijava/links/LinkService.java

@@ -32,7 +32,6 @@
 import org.scijava.plugin.HandlerService;
 import org.scijava.service.SciJavaService;
 
-import java.awt.*;
 import java.net.URI;
 import java.util.Optional;
 
@@ -68,18 +67,6 @@ default Class<LinkHandler> getPluginType() {
         return LinkHandler.class;
     }
 
-    // -- Service methods --
-
-    @Override
-    default void initialize() {
-        HandlerService.super.initialize();
-        // Register URI handler with the desktop system, if possible.
-        if (!Desktop.isDesktopSupported()) return;
-        final Desktop desktop = Desktop.getDesktop();
-        if (!desktop.isSupported(Desktop.Action.APP_OPEN_URI)) return;
-        desktop.setOpenURIHandler(event -> handle(event.getURI()));
-    }
-
     // -- Typed methods --
 
     @Override