Logging node click event (#24)

packages/serverless-workflow-diagram-editor/sw-editor/sw-editor-client/src/main/java/org/kie/workbench/common/stunner/sw/client/editor/ShapeEventsHandler.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2022 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.kie.workbench.common.stunner.sw.client.editor;
+
+import javax.enterprise.event.Observes;
+import javax.inject.Singleton;
+
+import elemental2.dom.DomGlobal;
+import org.kie.workbench.common.stunner.core.client.canvas.CanvasHandler;
+import org.kie.workbench.common.stunner.core.client.canvas.event.selection.CanvasClearSelectionEvent;
+import org.kie.workbench.common.stunner.core.client.canvas.event.selection.CanvasSelectionEvent;
+import org.kie.workbench.common.stunner.core.graph.Node;
+import org.kie.workbench.common.stunner.core.graph.content.view.View;
+import org.kie.workbench.common.stunner.sw.definition.State;
+
+@Singleton
+public class ShapeEventsHandler {
+
+    void onCanvasSelectionEvent(@Observes CanvasSelectionEvent event) {
+        if (null != event.getCanvasHandler()) {
+            if (event.getIdentifiers().size() == 1) {
+                final String uuid = event.getIdentifiers().iterator().next();
+                String stateName = obtainStateName(event.getCanvasHandler(), uuid);
+                // TODO: This stateName is what you have to send to the multiplyach...
+                DomGlobal.console.log("Selected state with name = " + stateName);
+            }
+        }
+    }
+
+    private String obtainStateName(CanvasHandler<?,?> handler, String uuid) {
+        Node<?,?> node = handler.getDiagram().getGraph().getNode(uuid);
+        Object content = node.getContent();
+        if (content instanceof View) {
+            Object bean = ((View) content).getDefinition();
+            if (bean instanceof State) {
+                return ((State)bean).name;
+            }
+        }
+        return null;
+    }
+
+    void onCanvasClearSelectionEvent(@Observes CanvasClearSelectionEvent event) {
+        if (null != event.getCanvasHandler()) {
+            // TODO: Selection is cleard, nothing selected
+        }
+    }
+
+}