1 files changed, 86 insertions, 0 deletions
diff --git a/src/main/java/me/xmrvizzy/skyblocker/config/controllers/EnumDropdownController.java b/src/main/java/me/xmrvizzy/skyblocker/config/controllers/EnumDropdownController.java
new file mode 100644
index 00000000..cf40c7d5
--- /dev/null
+++ b/src/main/java/me/xmrvizzy/skyblocker/config/controllers/EnumDropdownController.java
@@ -0,0 +1,86 @@
+package me.xmrvizzy.skyblocker.config.controllers;
+
+import dev.isxander.yacl3.api.Option;
+import dev.isxander.yacl3.api.utils.Dimension;
+import dev.isxander.yacl3.gui.AbstractWidget;
+import dev.isxander.yacl3.gui.YACLScreen;
+import dev.isxander.yacl3.gui.controllers.dropdown.AbstractDropdownController;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.stream.Stream;
+
+public class EnumDropdownController<E extends Enum<E>> extends AbstractDropdownController<E> {
+    protected EnumDropdownController(Option<E> option) {
+        super(option);
+    }
+
+    @Override
+    public String getString() {
+        return option().pendingValue().toString();
+    }
+
+    @Override
+    public void setFromString(String value) {
+        option().requestSet(getEnumFromString(value));
+    }
+
+    /**
+     * Searches through enum constants for one whose {@link Enum#toString()} result equals {@code value}
+     *
+     * @return The enum constant associated with the {@code value} or the pending value if none are found
+     * @implNote The return value of {@link Enum#toString()} on each enum constant should be unique in order to ensure accuracy
+     */
+    private E getEnumFromString(String value) {
+        value = value.toLowerCase();
+        for (E constant : option().pendingValue().getDeclaringClass().getEnumConstants()) {
+            if (constant.toString().toLowerCase().equals(value)) return constant;
+        }
+
+        return option().pendingValue();
+    }
+
+    @Override
+    public boolean isValueValid(String value) {
+        value = value.toLowerCase();
+        for (E constant : option().pendingValue().getDeclaringClass().getEnumConstants()) {
+            if (constant.toString().equals(value)) return true;
+        }
+
+        return false;
+    }
+
+    @Override
+    protected String getValidValue(String value, int offset) {
+        return getValidEnumConstants(value)
+                .skip(offset)
+                .findFirst()
+                .orElseGet(this::getString);
+    }
+
+    /**
+     * Filters and sorts through enum constants for those whose {@link Enum#toString()} result equals {@code value}
+     *
+     * @return a sorted stream containing enum constants associated with the {@code value}
+     * @implNote The return value of {@link Enum#toString()} on each enum constant should be unique in order to ensure accuracy
+     */
+    @NotNull
+    protected Stream<String> getValidEnumConstants(String value) {
+        String valueLowerCase = value.toLowerCase();
+        return Arrays.stream(option().pendingValue().getDeclaringClass().getEnumConstants())
+                .map(Enum::toString)
+                .filter(constant -> constant.toLowerCase().contains(valueLowerCase))
+                .sorted((s1, s2) -> {
+                    String s1LowerCase = s1.toLowerCase();
+                    String s2LowerCase = s2.toLowerCase();
+                    if (s1LowerCase.startsWith(valueLowerCase) && !s2LowerCase.startsWith(valueLowerCase)) return -1;
+                    if (!s1LowerCase.startsWith(valueLowerCase) && s2LowerCase.startsWith(valueLowerCase)) return 1;
+                    return s1.compareTo(s2);
+                });
+    }
+
+    @Override
+    public AbstractWidget provideWidget(YACLScreen screen, Dimension<Integer> widgetDimension) {
+        return new EnumDropdownControllerElement<>(this, screen, widgetDimension);
+    }
+}