Lots of fixes

src/main/java/appeng/client/gui/widgets/ITickingWidget.java

@@ -1,12 +1,13 @@
 package appeng.client.gui.widgets;
 
+import net.minecraft.client.gui.Element;
 import net.minecraft.client.gui.screen.Screen;
 
 /**
  * Indicates that a widget (anything that is in the {@link Screen#children()}
  * list) should receive callbacks every tick.
  */
-public interface ITickingWidget {
+public interface ITickingWidget extends Element {
 
     void tick();
 

src/main/java/appeng/client/gui/widgets/NumberBox.java

@@ -38,7 +38,7 @@ public class NumberBox extends TextFieldWidget {
                      final Class<?> type, LongConsumer changeListener) {
         super(fontRenderer, x, y, width, height, new LiteralText("0"));
         this.setText("0");
-        setResponder(this::onTextChanged);
+        setChangedListener(this::onTextChanged);
         this.lastValue = 0;
         this.changeListener = changeListener;
         if (type == int.class || type == Integer.class) {

src/main/java/appeng/client/gui/widgets/SettingToggleButton.java

@@ -315,7 +315,7 @@ public class SettingToggleButton<T extends Enum<T>> extends IconButton {
 
             return new LiteralText(name + '\n' + sb);
         }
-        return "";
+        return LiteralText.EMPTY;
     }
 
     public String getFillVar() {

src/main/java/appeng/client/gui/widgets/ToggleButton.java

@@ -93,7 +93,7 @@ public class ToggleButton extends ButtonWidget implements ITooltip {
 
             return new LiteralText(name + '\n' + sb);
         }
-        return "";
+        return LiteralText.EMPTY;
     }
 
     @Override