functional scrolling

core/src/mindustry/logic/LogicDialog.java

@@ -0,0 +1,36 @@
+package mindustry.logic;
+
+import arc.func.*;
+import arc.scene.ui.layout.*;
+import arc.util.*;
+import mindustry.ui.dialogs.*;
+
+public class LogicDialog extends BaseDialog{
+    LCanvas canvas;
+    Cons<String> consumer = s -> Log.info(s);
+
+    public LogicDialog(){
+        super("logic");
+
+        clearChildren();
+
+        canvas = new LCanvas();
+        addCloseButton();
+
+        stack(canvas, new Table(t -> {
+            t.bottom();
+            t.add(buttons);
+        })).grow();
+
+        hidden(() -> {
+            consumer.get(canvas.save());
+        });
+    }
+
+    public void show(String code, Cons<String> consumer){
+        canvas.load(code);
+        this.consumer = consumer;
+
+        show();
+    }
+}