Created dummy GuiOverlayElement interface for ComposedElement to determine which Elements to draw last

Added methods to retrieve position and size from a GuiElement
Added draw() method with option to override hovered boolean to GuiElement interface and implemented it. This is required for GuiAdvancedButtons which would be tinted blue (as if hovered) even though an overlying GuiElement (e.g. GuiDropdown) was hovered

src/main/java/eu/crushedpixel/replaymod/gui/elements/ComposedElement.java

@@ -22,10 +22,25 @@ public class ComposedElement implements GuiElement {
         Collections.sort(parts, COMPOSED_ELEMENT_COMPARATOR);
     }
 
+    @Override
+    public void draw(Minecraft mc, int mouseX, int mouseY, boolean hovered) {
+        draw(mc, mouseX, mouseY);
+    }
+
     @Override
     public void draw(Minecraft mc, int mouseX, int mouseY) {
-        for (GuiElement part : parts) {
-            part.draw(mc, mouseX, mouseY);
+        GuiElement hovered = null;
+
+        for (int i=parts.size()-1; i>=0; i--) {
+            GuiElement part = parts.get(i);
+            if(part.isHovering(mouseX, mouseY)) {
+                hovered = part;
+                break;
+            }
+        }
+
+        for(GuiElement part : parts) {
+            part.draw(mc, mouseX, mouseY, hovered == part);
         }
     }
 
@@ -96,11 +111,11 @@ public class ComposedElement implements GuiElement {
 
         @Override
         public int compare(GuiElement o1, GuiElement o2) {
-            Boolean d1 = o1 instanceof GuiDropdown;
-            Boolean d2 = o2 instanceof GuiDropdown;
+            Boolean d1 = o1 instanceof GuiOverlayElement;
+            Boolean d2 = o2 instanceof GuiOverlayElement;
 
             if(d1 && d2) {
-                return -new Integer(((GuiDropdown)o1).yPosition).compareTo(((GuiDropdown)o2).yPosition);
+                return -new Integer(o1.yPos()).compareTo(o2.yPos());
             }
 
             return d1.compareTo(d2);
@@ -111,4 +126,24 @@ public class ComposedElement implements GuiElement {
             return false;
         }
     }
+
+    @Override
+    public int xPos() {
+        return 0;
+    }
+
+    @Override
+    public int yPos() {
+        return 0;
+    }
+
+    @Override
+    public int width() {
+        return 0;
+    }
+
+    @Override
+    public int height() {
+        return 0;
+    }
 }