How are you supposed to use GuiConfigEntries.SelectValueEntry?

I'm going to go insane. As with almost everything Forge there is basically no documentation to be found. I wanted to use the SelectValueEntry GUI entry in the same fashion I use numeric sliders - by telling Configuration Properties about this nice ConfigEntry class:

File configFile = event.getSuggestedConfigurationFile();
config = new Configuration(configFile);
config.get("Category", "Field", "Default").setConfigEntryClass(GuiConfigEntries.SelectValueEntry.class);

Naturally that doesn't work because the relevant constructor then doesn't know about SelectValueEntry's fourth required parameter that gives it the map with values.

I tried a bunch of different  things; mainly the least  ugly override of the class like so:

public class MySelectValueEntry extends GuiConfigEntries.SelectValueEntry {
	public MySelectValueEntry(GuiConfig owningScreen, GuiConfigEntries owningEntryList, IConfigElement configElement) {
		super(owningScreen, owningEntryList, configElement,  ValueMap);
	}
}

where ValueMap is a previously constructed Map<Integer, String>, and just using it there instead. Seemed like a fairly okay solution, but I was met with an exception:

[01:59:12] [main/ERROR] [FML]: There was a critical error instantiating the custom IConfigEntry for config element cfg.field.
java.lang.NoSuchMethodException: net.amunak.minecraft.mod.Configuration$MySelectValueEntry.<init>(net.minecraftforge.fml.client.config.GuiConfig, net.minecraftforge.fml.client.config.GuiConfigEntries, net.minecraftforge.fml.client.config.IConfigElement)
	at java.lang.Class.getConstructor0(Class.java:3082) ~[?:1.8.0_181]
	at java.lang.Class.getConstructor(Class.java:1825) ~[?:1.8.0_181]
	at net.minecraftforge.fml.client.config.GuiConfigEntries.<init>(GuiConfigEntries.java:127) [GuiConfigEntries.class:?]
	at net.minecraftforge.fml.client.config.GuiConfig.<init>(GuiConfig.java:217) [GuiConfig.class:?]
	at net.minecraftforge.fml.client.config.GuiConfig.<init>(GuiConfig.java:153) [GuiConfig.class:?]
	at net.amunak.minecraft.mod.ModConfigGuiFactory$ConfigScreen$SimpleCategory.buildChildScreen(ModConfigGuiFactory.java:138) [ModConfigGuiFactory$ConfigScreen$SimpleCategory.class:?]
	at net.minecraftforge.fml.client.config.GuiConfigEntries$CategoryEntry.<init>(GuiConfigEntries.java:1322) [GuiConfigEntries$CategoryEntry.class:?]
	at net.amunak.minecraft.mod.ModConfigGuiFactory$ConfigScreen$SimpleCategory.<init>(ModConfigGuiFactory.java:121) [ModConfigGuiFactory$ConfigScreen$SimpleCategory.class:?]
	at net.amunak.minecraft.mod.ModConfigGuiFactory$ConfigScreen$EntitiesPlayersCategory.<init>(ModConfigGuiFactory.java:75) [ModConfigGuiFactory$ConfigScreen$EntitiesPlayersCategory.class:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) [?:1.8.0_181]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [?:1.8.0_181]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) [?:1.8.0_181]
	at net.minecraftforge.fml.client.config.GuiConfigEntries.<init>(GuiConfigEntries.java:128) [GuiConfigEntries.class:?]
	at net.minecraftforge.fml.client.config.GuiConfig.initGui(GuiConfig.java:269) [GuiConfig.class:?]
	at net.minecraft.client.gui.GuiScreen.setWorldAndResolution(GuiScreen.java:543) [GuiScreen.class:?]
	at net.minecraft.client.Minecraft.displayGuiScreen(Minecraft.java:1097) [Minecraft.class:?]
	at net.minecraftforge.fml.client.GuiModList.actionPerformed(GuiModList.java:303) [GuiModList.class:?]
	at net.minecraft.client.gui.GuiScreen.mouseClicked(GuiScreen.java:494) [GuiScreen.class:?]
	at net.minecraftforge.fml.client.GuiModList.mouseClicked(GuiModList.java:206) [GuiModList.class:?]
	at net.minecraft.client.gui.GuiScreen.handleMouseInput(GuiScreen.java:611) [GuiScreen.class:?]
	at net.minecraftforge.fml.client.GuiModList.handleMouseInput(GuiModList.java:352) [GuiModList.class:?]
	at net.minecraft.client.gui.GuiScreen.handleInput(GuiScreen.java:576) [GuiScreen.class:?]
	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1885) [Minecraft.class:?]
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1187) [Minecraft.class:?]
	at net.minecraft.client.Minecraft.run(Minecraft.java:441) [Minecraft.class:?]
	at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
	at GradleStart.main(GradleStart.java:25) [start/:?]

suggesting that a fitting  constructor(?) doesn't exist. You can look at the full and pretty much current source code for context. I specifically don't want to draw the menu "by hand" (thus bypassing the whole instantiation from net.minecraftforge.fml.client.config.GuiConfigEntries:126) to avoid duplicating tons of code that already works just fine inside Forge.

Did I miss something or am I doing it somehow completely wrong? I've been trying at it for the past like 4 hours without much recourse. Any ideas?

Edited October 6, 20186 yr by Amunak