1 files changed, 144 insertions, 0 deletions
diff --git a/src/client/java/dev/isxander/yacl/impl/OptionImpl.java b/src/client/java/dev/isxander/yacl/impl/OptionImpl.java
new file mode 100644
index 0000000..90158c7
--- /dev/null
+++ b/src/client/java/dev/isxander/yacl/impl/OptionImpl.java
@@ -0,0 +1,144 @@
+package dev.isxander.yacl.impl;
+
+import com.google.common.collect.ImmutableSet;
+import dev.isxander.yacl.api.Binding;
+import dev.isxander.yacl.api.Controller;
+import dev.isxander.yacl.api.Option;
+import dev.isxander.yacl.api.OptionFlag;
+import net.minecraft.text.Text;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.function.BiConsumer;
+import java.util.function.Function;
+
+public class OptionImpl<T> implements Option<T> {
+    private final Text name;
+    private Text tooltip;
+    private final Controller<T> controller;
+    private final Binding<T> binding;
+    private boolean available;
+
+    private final ImmutableSet<OptionFlag> flags;
+
+    private final Class<T> typeClass;
+
+    private T pendingValue;
+
+    private final List<BiConsumer<Option<T>, T>> listeners;
+
+    public OptionImpl(
+            @NotNull Text name,
+            @Nullable Function<T, Text> tooltipGetter,
+            @NotNull Function<Option<T>, Controller<T>> controlGetter,
+            @NotNull Binding<T> binding,
+            boolean available,
+            ImmutableSet<OptionFlag> flags,
+            @NotNull Class<T> typeClass,
+            @NotNull Collection<BiConsumer<Option<T>, T>> listeners
+    ) {
+        this.name = name;
+        this.binding = binding;
+        this.available = available;
+        this.flags = flags;
+        this.typeClass = typeClass;
+        this.listeners = new ArrayList<>(listeners);
+        this.controller = controlGetter.apply(this);
+
+        addListener((opt, pending) -> tooltip = tooltipGetter.apply(pending));
+        requestSet(binding().getValue());
+    }
+
+    @Override
+    public @NotNull Text name() {
+        return name;
+    }
+
+    @Override
+    public @NotNull Text tooltip() {
+        return tooltip;
+    }
+
+    @Override
+    public @NotNull Controller<T> controller() {
+        return controller;
+    }
+
+    @Override
+    public @NotNull Binding<T> binding() {
+        return binding;
+    }
+
+    @Override
+    public boolean available() {
+        return available;
+    }
+
+    @Override
+    public void setAvailable(boolean available) {
+        this.available = available;
+    }
+
+    @Override
+    public @NotNull Class<T> typeClass() {
+        return typeClass;
+    }
+
+    @Override
+    public @NotNull ImmutableSet<OptionFlag> flags() {
+        return flags;
+    }
+
+    @Override
+    public boolean requiresRestart() {
+        return flags.contains(OptionFlag.GAME_RESTART);
+    }
+
+    @Override
+    public boolean changed() {
+        return !binding().getValue().equals(pendingValue);
+    }
+
+    @Override
+    public @NotNull T pendingValue() {
+        return pendingValue;
+    }
+
+    @Override
+    public void requestSet(T value) {
+        pendingValue = value;
+        listeners.forEach(listener -> listener.accept(this, pendingValue));
+    }
+
+    @Override
+    public boolean applyValue() {
+        if (changed()) {
+            binding().setValue(pendingValue);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void forgetPendingValue() {
+        requestSet(binding().getValue());
+    }
+
+    @Override
+    public void requestSetDefault() {
+        requestSet(binding().defaultValue());
+    }
+
+    @Override
+    public boolean isPendingValueDefault() {
+        return binding().defaultValue().equals(pendingValue());
+    }
+
+    @Override
+    public void addListener(BiConsumer<Option<T>, T> changedListener) {
+        this.listeners.add(changedListener);
+    }
+}