Add better key binding support

src/main/java/moe/nea/firmament/mixins/MixinKeybindsScreen.java

@@ -0,0 +1,53 @@
+package moe.nea.firmament.mixins;
+
+import moe.nea.firmament.gui.config.ManagedConfig;
+import moe.nea.firmament.keybindings.FirmamentKeyBindings;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.screen.option.ControlsListWidget;
+import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.client.option.KeyBinding;
+import net.minecraft.text.Text;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.ModifyArg;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(ControlsListWidget.KeyBindingEntry.class)
+public class MixinKeybindsScreen {
+
+    @Mutable
+    @Shadow
+    @Final
+    private ButtonWidget editButton;
+
+    @Shadow
+    @Final
+    private KeyBinding binding;
+
+    @Shadow
+    @Final
+    private ButtonWidget resetButton;
+
+    @ModifyArg(method = "<init>", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/widget/ButtonWidget;builder(Lnet/minecraft/text/Text;Lnet/minecraft/client/gui/widget/ButtonWidget$PressAction;)Lnet/minecraft/client/gui/widget/ButtonWidget$Builder;"))
+    public ButtonWidget.PressAction onInit(ButtonWidget.PressAction action) {
+        ManagedConfig config = FirmamentKeyBindings.INSTANCE.getKeyBindings().get(binding);
+        if (config == null) return action;
+        return button -> {
+            config.showConfigEditor(MinecraftClient.getInstance().currentScreen);
+        };
+    }
+
+    @Inject(method = "update", at = @At("HEAD"), cancellable = true)
+    public void onUpdate(CallbackInfo ci) {
+        ManagedConfig config = FirmamentKeyBindings.INSTANCE.getKeyBindings().get(binding);
+        if (config == null) return;
+        resetButton.active = false;
+        editButton.setMessage(Text.translatable("firmament.keybinding.external"));
+        ci.cancel();
+    }
+
+}