Added CheckBoxListener for GuiAdvancedCheckBox

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

@@ -1,13 +1,28 @@
 package eu.crushedpixel.replaymod.gui.elements;
 
+import eu.crushedpixel.replaymod.gui.elements.listeners.CheckBoxListener;
 import net.minecraft.client.Minecraft;
 import net.minecraftforge.fml.client.config.GuiCheckBox;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class GuiAdvancedCheckBox extends GuiCheckBox implements GuiElement {
     public GuiAdvancedCheckBox(int xPos, int yPos, String displayString, boolean isChecked) {
         super(0, xPos, yPos, displayString, isChecked);
     }
 
+    public GuiAdvancedCheckBox(String displayString, boolean isChecked, boolean isEnabled) {
+        this(0, 0, displayString, isChecked);
+        this.setElementEnabled(isEnabled);
+    }
+
+    private List<CheckBoxListener> listeners = new ArrayList<CheckBoxListener>();
+
+    public void addCheckBoxListener(CheckBoxListener listener) {
+        this.listeners.add(listener);
+    }
+
     @Override
     public void draw(Minecraft mc, int mouseX, int mouseY) {
         drawButton(mc, mouseX, mouseY);
@@ -28,7 +43,9 @@ public class GuiAdvancedCheckBox extends GuiCheckBox implements GuiElement {
 
     @Override
     public boolean mouseClick(Minecraft mc, int mouseX, int mouseY, int button) {
-        return mousePressed(mc, mouseX, mouseY);
+        boolean success = mousePressed(mc, mouseX, mouseY);
+        if(success) fireCheckListeners();
+        return success;
     }
 
     @Override
@@ -55,4 +72,16 @@ public class GuiAdvancedCheckBox extends GuiCheckBox implements GuiElement {
     public void setElementEnabled(boolean enabled) {
         this.enabled = enabled;
     }
+
+    @Override
+    public void setIsChecked(boolean isChecked) {
+        super.setIsChecked(isChecked);
+        fireCheckListeners();
+    }
+
+    private void fireCheckListeners() {
+        for(CheckBoxListener listener : listeners) {
+            listener.onCheck(isChecked());
+        }
+    }
 }

src/main/java/eu/crushedpixel/replaymod/gui/elements/listeners/CheckBoxListener.java

@@ -0,0 +1,7 @@
+package eu.crushedpixel.replaymod.gui.elements.listeners;
+
+public interface CheckBoxListener {
+
+    void onCheck(boolean checked);
+
+}