add graph.nodeHasInputConnections

Author: i-make-robots

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>com.marginallyclever</groupId>
     <artifactId>nodegraphcore</artifactId>
-    <version>1.5.12</version>
+    <version>1.5.13</version>
 
     <name>NodeGraphCore</name>
     <description>Flow based programming in Java.</description>

src/main/java/com/marginallyclever/nodegraphcore/Graph.java

@@ -151,6 +151,19 @@ public void removeConnectionsToNode(Node n) {
         connections.removeAll(toRemove);
     }
 
+    /**
+     * @param node the subject to check
+     * @return true if the given {@link Node} has any {@link Connection}s to the {@link Input} ports.
+     */
+    public boolean nodeHasInputConnections(Node node) {
+        for(Connection c : connections) {
+            for(int i = 0; i<node.getNumPorts(); ++i) {
+                if(c.getInput() == node.getPort(i)) return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * Searches this {@link Graph} for an equivalent {@link Connection}.
      * @param connection the item to match.

src/main/java/com/marginallyclever/nodegraphcore/port/Port.java

@@ -193,8 +193,8 @@ public JSONObject toJSON() throws JSONException {
     public void fromJSON(JSONObject jo) throws JSONException, ClassCastException {
         name = jo.getString("name");
         setValue(jo.has("value")
-                ? (T) DAO4JSONFactory.fromJSON(this.type,jo.get("value"))
-                : null);
+                ? DAO4JSONFactory.fromJSON(this.type,jo.get("value"))
+                : getValue());
         RectangleDAO4JSON dao = new RectangleDAO4JSON();
         rectangle.setBounds(dao.fromJSON(jo.getJSONObject("rectangle")));
     }