Common config gui

src/main/kotlin/moe/nea/firmament/gui/config/StringHandler.kt

@@ -0,0 +1,32 @@
+package moe.nea.firmament.gui.config
+
+import io.github.cottonmc.cotton.gui.widget.WLabel
+import io.github.cottonmc.cotton.gui.widget.WTextField
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.JsonPrimitive
+import kotlinx.serialization.json.jsonPrimitive
+import net.minecraft.text.Text
+
+class StringHandler(val config: ManagedConfig) : ManagedConfig.OptionHandler<String> {
+    override fun toJson(element: String): JsonElement? {
+        return JsonPrimitive(element)
+    }
+
+    override fun fromJson(element: JsonElement): String {
+        return element.jsonPrimitive.toString()
+    }
+
+    override fun emitGuiElements(opt: ManagedConfig.Option<String>, guiAppender: GuiAppender) {
+        guiAppender.appendLabeledRow(
+            opt.labelText,
+            WTextField(opt.labelText).apply {
+                suggestion = Text.translatableWithFallback(opt.rawLabelText + ".hint", "")
+                guiAppender.onReload { text = opt.value }
+                setChangedListener {
+                    opt.value = it
+                    config.save()
+                }
+            }
+        )
+    }
+}