Imroved Indicator interface, draws two indicators now

src/indicators/BaseIndicator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, tube
+ * Copyright (c) 2017, 7u83
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -26,13 +26,14 @@
 package indicators;
 
 import org.json.JSONObject;
+import sesim.ConfigurableInterface;
 import sesim.Indicator;
 
 /**
  *
  * @author tube
  */
-public abstract class BaseIndicator implements Indicator{
+public abstract class BaseIndicator implements Indicator {
 
     @Override
     public String getName() {

src/indicators/SMAIndicator.java

@@ -25,6 +25,7 @@
  */
 package indicators;
 
+import org.json.JSONObject;
 import sesim.OHLCData;
 import sesim.OHLCDataItem;
 
@@ -38,16 +39,31 @@ public class SMAIndicator extends BaseIndicator {
 
     OHLCData indicator;
 
-    public SMAIndicator(OHLCData parent) {
-        this.parent = parent;
+    public SMAIndicator() {
         indicator = new OHLCData();
     }
-    
-    public void setParent(OHLCData parent){
-        
+
+    public void setParent(OHLCData parent) {
+        this.parent = parent;
     }
 
-    int len = 20;
+    final String LEN = "len";
+    int len = 60;
+
+    @Override
+    public void putConfig(JSONObject cfg) {
+
+        len = cfg.getInt(LEN);
+
+    }
+
+    @Override
+    public JSONObject getConfig() {
+        JSONObject r;
+        r = new JSONObject();
+        r.put(LEN, len);
+        return r;
+    }
 
     private float getAt(int pos) {
         if (parent.size() == 0) {
@@ -67,10 +83,9 @@ public class SMAIndicator extends BaseIndicator {
     }
 
     public void update() {
- 
-             
+
         if (parent.size() == 0) {
-            
+
             return;
         }