feat: Add Storage overlay search

8 files changed, 236 insertions, 72 deletions

diff --git a/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java b/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java
index 1fbbe45..355a666 100644
--- a/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java
+++ b/src/main/java/moe/nea/firmament/init/HandledScreenRiser.java
@@ -32,12 +32,18 @@ public class HandledScreenRiser extends RiserUtils {
 	String keyReleased = remapper.mapMethodName("intermediary", Intermediary.<Element>className(),
 	                                            Intermediary.methodName(Element::keyReleased),
 	                                            keyReleasedDesc.getDescriptor());
+	// public boolean charTyped(char chr, int modifiers)
+	Type charTypedDesc = Type.getMethodType(Type.BOOLEAN_TYPE, Type.CHAR_TYPE, Type.INT_TYPE);
+	String charTyped = remapper.mapMethodName("intermediary", Intermediary.<Element>className(),
+	                                          Intermediary.methodName(Element::charTyped),
+	                                          charTypedDesc.getDescriptor());
 
 
 	@Override
 	public void addTinkerers() {
 		ClassTinkerers.addTransformation(HandledScreen, this::addMouseScroll, true);
 		ClassTinkerers.addTransformation(HandledScreen, this::addKeyReleased, true);
+		ClassTinkerers.addTransformation(HandledScreen, this::addCharTyped, true);
 	}
 
 	/**
@@ -70,86 +76,77 @@ public class HandledScreenRiser extends RiserUtils {
 	}
 
 	void addKeyReleased(ClassNode classNode) {
-		var keyReleasedNode = findMethod(classNode, keyReleased, keyReleasedDesc);
+		addSuperInjector(
+			classNode, keyReleased, keyReleasedDesc, "keyReleased_firmament",
+			insns -> {
+				// ALOAD 0, load this
+				insns.add(new VarInsnNode(Opcodes.ALOAD, 0));
+				// ILOAD 1-3, load args
+				insns.add(new VarInsnNode(Opcodes.ILOAD, 1));
+				insns.add(new VarInsnNode(Opcodes.ILOAD, 2));
+				insns.add(new VarInsnNode(Opcodes.ILOAD, 3));
+			});
+	}
+
+	void addCharTyped(ClassNode classNode) {
+		addSuperInjector(
+			classNode, charTyped, charTypedDesc, "charTyped_firmament",
+			insns -> {
+				// ALOAD 0, load this
+				insns.add(new VarInsnNode(Opcodes.ALOAD, 0));
+				// ILOAD 1-2, load args. chars = ints
+				insns.add(new VarInsnNode(Opcodes.ILOAD, 1));
+				insns.add(new VarInsnNode(Opcodes.ILOAD, 2));
+			});
+	}
+
+	void addSuperInjector(
+		ClassNode classNode,
+		String name,
+		Type desc,
+		String firmamentName,
+		Consumer<InsnList> loadArgs
+	) {
+		var keyReleasedNode = findMethod(classNode, name, desc);
 		if (keyReleasedNode == null) {
 			keyReleasedNode = new MethodNode(
 				Modifier.PUBLIC,
-				keyReleased,
-				keyReleasedDesc.getDescriptor(),
+				name,
+				desc.getDescriptor(),
 				null,
 				new String[0]
 			);
 			var insns = keyReleasedNode.instructions;
-			// ALOAD 0, load this
-			insns.add(new VarInsnNode(Opcodes.ALOAD, 0));
-			// ILOAD 1-3, load args
-			insns.add(new VarInsnNode(Opcodes.ILOAD, 1));
-			insns.add(new VarInsnNode(Opcodes.ILOAD, 2));
-			insns.add(new VarInsnNode(Opcodes.ILOAD, 3));
+			loadArgs.accept(insns);
 			// INVOKESPECIAL call super method
 			insns.add(new MethodInsnNode(Opcodes.INVOKESPECIAL, getTypeForClassName(Screen).getInternalName(),
-			                             keyReleased, keyReleasedDesc.getDescriptor()));
+			                             name, desc.getDescriptor()));
 			// IRETURN return int on stack (booleans are int at runtime)
 			insns.add(new InsnNode(Opcodes.IRETURN));
 			classNode.methods.add(keyReleasedNode);
 		}
-		insertTrueHandler(keyReleasedNode, insns -> {
-			// ALOAD 0, load this
-			insns.add(new VarInsnNode(Opcodes.ALOAD, 0));
-			// ILOAD 1-3, load args
-			insns.add(new VarInsnNode(Opcodes.ILOAD, 1));
-			insns.add(new VarInsnNode(Opcodes.ILOAD, 2));
-			insns.add(new VarInsnNode(Opcodes.ILOAD, 3));
-		}, insns -> {
+		insertTrueHandler(keyReleasedNode, loadArgs, insns -> {
 			// INVOKEVIRTUAL call custom handler
 			insns.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
 			                             getTypeForClassName(HandledScreen).getInternalName(),
-			                             "keyReleased_firmament",
-			                             keyReleasedDesc.getDescriptor()));
+			                             firmamentName,
+			                             desc.getDescriptor()));
 		});
+
 	}
 
 	void addMouseScroll(ClassNode classNode) {
-		MethodNode mouseScrolledNode = findMethod(classNode, mouseScrolled, mouseScrolledDesc);
-		if (mouseScrolledNode == null) {
-			mouseScrolledNode = new MethodNode(
-				Modifier.PUBLIC,
-				mouseScrolled,
-				mouseScrolledDesc.getDescriptor(),
-				null,
-				new String[0]
-			);
-			var insns = mouseScrolledNode.instructions;
-			// ALOAD 0, load this
-			insns.add(new VarInsnNode(Opcodes.ALOAD, 0));
-			// DLOAD 1-4, load the 4 argument doubles. Note that since doubles are two entries wide we skip 2 each time.
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 1));
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 3));
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 5));
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 7));
-			// INVOKESPECIAL call super method
-			insns.add(new MethodInsnNode(Opcodes.INVOKESPECIAL, getTypeForClassName(Screen).getInternalName(), mouseScrolled, mouseScrolledDesc.getDescriptor()));
-			// IRETURN return int on stack (booleans are int at runtime)
-			insns.add(new InsnNode(Opcodes.IRETURN));
-			classNode.methods.add(mouseScrolledNode);
-		}
-
-		insertTrueHandler(mouseScrolledNode, insns -> {
-			// ALOAD 0, load this
-			insns.add(new VarInsnNode(Opcodes.ALOAD, 0));
-			// DLOAD 1-4, load the 4 argument doubles. Note that since doubles are two entries wide we skip 2 each time.
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 1));
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 3));
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 5));
-			insns.add(new VarInsnNode(Opcodes.DLOAD, 7));
-		}, insns -> {
-			// INVOKEVIRTUAL call custom handler
-			insns.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
-			                             getTypeForClassName(HandledScreen).getInternalName(),
-			                             "mouseScrolled_firmament",
-			                             mouseScrolledDesc.getDescriptor()));
-
-		});
+		addSuperInjector(
+			classNode, mouseScrolled, mouseScrolledDesc, "mouseScrolled_firmament",
+			insns -> {
+				// ALOAD 0, load this
+				insns.add(new VarInsnNode(Opcodes.ALOAD, 0));
+				// DLOAD 1-4, load the 4 argument doubles. Note that since doubles are two entries wide we skip 2 each time.
+				insns.add(new VarInsnNode(Opcodes.DLOAD, 1));
+				insns.add(new VarInsnNode(Opcodes.DLOAD, 3));
+				insns.add(new VarInsnNode(Opcodes.DLOAD, 5));
+				insns.add(new VarInsnNode(Opcodes.DLOAD, 7));
+			});
 	}
 
 }
diff --git a/src/main/java/moe/nea/firmament/mixins/MixinHandledScreen.java b/src/main/java/moe/nea/firmament/mixins/MixinHandledScreen.java
index 82f8f5d..e607ba3 100644
--- a/src/main/java/moe/nea/firmament/mixins/MixinHandledScreen.java
+++ b/src/main/java/moe/nea/firmament/mixins/MixinHandledScreen.java
@@ -62,10 +62,6 @@ public abstract class MixinHandledScreen<T extends ScreenHandler> {
 		}
 	}
 
-	boolean keyReleased_firmament(int keyCode, int scanCode, int modifiers) {
-		return HandledScreenKeyReleasedEvent.Companion.publish(new HandledScreenKeyReleasedEvent((HandledScreen<?>) (Object) this, keyCode, scanCode, modifiers)).getCancelled();
-	}
-
 	@Inject(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/screen/ingame/HandledScreen;drawForeground(Lnet/minecraft/client/gui/DrawContext;II)V", shift = At.Shift.AFTER))
 	public void onAfterRenderForeground(DrawContext context, int mouseX, int mouseY, float delta, CallbackInfo ci) {
 		context.getMatrices().push();
diff --git a/src/main/java/moe/nea/firmament/mixins/customgui/PatchHandledScreen.java b/src/main/java/moe/nea/firmament/mixins/customgui/PatchHandledScreen.java
index 814f172..6e1090a 100644
--- a/src/main/java/moe/nea/firmament/mixins/customgui/PatchHandledScreen.java
+++ b/src/main/java/moe/nea/firmament/mixins/customgui/PatchHandledScreen.java
@@ -5,6 +5,7 @@ import com.llamalad7.mixinextras.injector.v2.WrapWithCondition;
 import com.llamalad7.mixinextras.injector.wrapoperation.Operation;
 import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation;
 import com.llamalad7.mixinextras.sugar.Local;
+import moe.nea.firmament.events.HandledScreenKeyReleasedEvent;
 import moe.nea.firmament.util.customgui.CoordRememberingSlot;
 import moe.nea.firmament.util.customgui.CustomGui;
 import moe.nea.firmament.util.customgui.HasCustomGui;
@@ -73,6 +74,16 @@ public class PatchHandledScreen<T extends ScreenHandler> extends Screen implemen
 		return override != null && override.mouseScrolled(mouseX, mouseY, horizontalAmount, verticalAmount);
 	}
 
+	public boolean keyReleased_firmament(int keyCode, int scanCode, int modifiers) {
+		if (HandledScreenKeyReleasedEvent.Companion.publish(new HandledScreenKeyReleasedEvent((HandledScreen<?>) (Object) this, keyCode, scanCode, modifiers)).getCancelled())
+			return true;
+		return override != null && override.keyReleased(keyCode, scanCode, modifiers);
+	}
+
+	public boolean charTyped_firmament(char chr, int modifiers) {
+		return override != null && override.charTyped(chr, modifiers);
+	}
+
 	@Inject(method = "init", at = @At("TAIL"))
 	private void onInit(CallbackInfo ci) {
 		if (override != null) {
@@ -179,6 +190,16 @@ public class PatchHandledScreen<T extends ScreenHandler> extends Screen implemen
 		}
 	}
 
+	@Inject(method = "keyPressed", at = @At("HEAD"), cancellable = true)
+	private void overrideKeyPressed(int keyCode, int scanCode, int modifiers, CallbackInfoReturnable<Boolean> cir) {
+		if (override != null) {
+			if (override.keyPressed(keyCode, scanCode, modifiers)) {
+				cir.setReturnValue(true);
+			}
+		}
+	}
+
+
 	@Inject(
 		method = "mouseReleased",
 		at = @At("HEAD"), cancellable = true)
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayCustom.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayCustom.kt
index 2be798b..6092e26 100644
--- a/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayCustom.kt
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayCustom.kt
@@ -66,6 +66,18 @@ class StorageOverlayCustom(
 		return overview.mouseDragged(mouseX, mouseY, button, deltaX, deltaY)
 	}
 
+	override fun keyReleased(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+		return overview.keyReleased(keyCode, scanCode, modifiers)
+	}
+
+	override fun keyPressed(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+		return overview.keyPressed(keyCode, scanCode, modifiers)
+	}
+
+	override fun charTyped(chr: Char, modifiers: Int): Boolean {
+		return overview.charTyped(chr, modifiers)
+	}
+
 	override fun mouseClick(mouseX: Double, mouseY: Double, button: Int): Boolean {
 		return overview.mouseClicked(mouseX, mouseY, button, (handler as? StorageBackingHandle.Page)?.storagePageSlot)
 	}
diff --git a/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayScreen.kt b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayScreen.kt
index 4c624ef..cf1cf1d 100644
--- a/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayScreen.kt
+++ b/src/main/kotlin/features/inventory/storageoverlay/StorageOverlayScreen.kt
@@ -1,15 +1,22 @@
 package moe.nea.firmament.features.inventory.storageoverlay
 
+import io.github.notenoughupdates.moulconfig.common.IMinecraft
 import io.github.notenoughupdates.moulconfig.gui.GuiContext
+import io.github.notenoughupdates.moulconfig.gui.KeyboardEvent
 import io.github.notenoughupdates.moulconfig.gui.MouseEvent
 import io.github.notenoughupdates.moulconfig.gui.component.ColumnComponent
 import io.github.notenoughupdates.moulconfig.gui.component.PanelComponent
 import io.github.notenoughupdates.moulconfig.gui.component.TextComponent
+import io.github.notenoughupdates.moulconfig.gui.component.TextFieldComponent
+import io.github.notenoughupdates.moulconfig.observer.GetSetter
+import io.github.notenoughupdates.moulconfig.observer.Property
+import java.util.TreeSet
 import me.shedaniel.math.Point
 import me.shedaniel.math.Rectangle
 import net.minecraft.client.gui.DrawContext
 import net.minecraft.client.gui.screen.Screen
 import net.minecraft.client.gui.screen.ingame.HandledScreen
+import net.minecraft.item.ItemStack
 import net.minecraft.screen.slot.Slot
 import net.minecraft.text.Text
 import net.minecraft.util.Identifier
@@ -20,10 +27,16 @@ import moe.nea.firmament.util.MC
 import moe.nea.firmament.util.MoulConfigUtils.adopt
 import moe.nea.firmament.util.MoulConfigUtils.clickMCComponentInPlace
 import moe.nea.firmament.util.MoulConfigUtils.drawMCComponentInPlace
+import moe.nea.firmament.util.MoulConfigUtils.typeMCComponentInPlace
+import moe.nea.firmament.util.StringUtil.words
 import moe.nea.firmament.util.assertTrueOr
 import moe.nea.firmament.util.customgui.customGui
 import moe.nea.firmament.util.mc.FakeSlot
+import moe.nea.firmament.util.mc.displayNameAccordingToNbt
+import moe.nea.firmament.util.mc.loreAccordingToNbt
 import moe.nea.firmament.util.render.drawGuiTexture
+import moe.nea.firmament.util.tr
+import moe.nea.firmament.util.unformattedString
 
 class StorageOverlayScreen : Screen(Text.literal("")) {
 
@@ -83,10 +96,13 @@ class StorageOverlayScreen : Screen(Text.literal("")) {
 		horizontalAmount: Double,
 		verticalAmount: Double
 	): Boolean {
-		scroll = (scroll + StorageOverlay.adjustScrollSpeed(verticalAmount)).toFloat()
+		coerceScroll(StorageOverlay.adjustScrollSpeed(verticalAmount).toFloat())
+		return true
+	}
+	fun coerceScroll(offset: Float) {
+		scroll = (scroll + offset)
 			.coerceAtMost(getMaxScroll())
 			.coerceAtLeast(0F)
-		return true
 	}
 
 	fun getMaxScroll() = lastRenderedInnerHeight.toFloat() - getScrollPanelInner().height
@@ -142,12 +158,26 @@ class StorageOverlayScreen : Screen(Text.literal("")) {
 
 	val guiContext = GuiContext(EmptyComponent())
 	private val knobStub = EmptyComponent()
-	val editButton = PanelComponent(ColumnComponent(FirmButtonComponent(TextComponent("Edit"), action = ::editPages)),
-	                                8, PanelComponent.DefaultBackgroundRenderer.TRANSPARENT)
+	val editButton = FirmButtonComponent(TextComponent(tr("firmament.storage-overlay.edit-pages", "Edit Pages").string), action = ::editPages)
+	val searchText = Property.of("") // TODO: sync with REI
+	val searchField = TextFieldComponent(searchText, 100, GetSetter.constant(true),
+	                                     tr("firmament.storage-overlay.search.suggestion", "Search...").string,
+	                                     IMinecraft.instance.defaultFontRenderer)
+	val controlComponent = PanelComponent(
+		ColumnComponent(
+			searchField,
+			editButton,
+		),
+		8, PanelComponent.DefaultBackgroundRenderer.TRANSPARENT
+	)
 
 	init {
-		guiContext.adopt(editButton)
+		searchText.addObserver { _, _ ->
+			layoutedForEach(StorageOverlay.Data.data ?: StorageData(), { _, _, _ -> })
+			coerceScroll(0F)
+		}
 		guiContext.adopt(knobStub)
+		guiContext.adopt(controlComponent)
 	}
 
 	fun drawControls(context: DrawContext, mouseX: Int, mouseY: Int) {
@@ -157,7 +187,7 @@ class StorageOverlayScreen : Screen(Text.literal("")) {
 			measurements.controlY,
 			CONTROL_BACKGROUND_WIDTH, CONTROL_HEIGHT)
 		context.drawMCComponentInPlace(
-			editButton,
+			controlComponent,
 			measurements.controlX, measurements.controlY,
 			CONTROL_WIDTH, CONTROL_HEIGHT,
 			mouseX, mouseY)
@@ -251,7 +281,7 @@ class StorageOverlayScreen : Screen(Text.literal("")) {
 			knobGrabbed = false
 			return true
 		}
-		if (clickMCComponentInPlace(editButton,
+		if (clickMCComponentInPlace(controlComponent,
 		                            measurements.controlX, measurements.controlY,
 		                            CONTROL_WIDTH, CONTROL_HEIGHT,
 		                            mouseX.toInt(), mouseY.toInt(),
@@ -290,7 +320,7 @@ class StorageOverlayScreen : Screen(Text.literal("")) {
 			knobGrabbed = true
 			return true
 		}
-		if (clickMCComponentInPlace(editButton,
+		if (clickMCComponentInPlace(controlComponent,
 		                            measurements.controlX, measurements.controlY,
 		                            CONTROL_WIDTH, CONTROL_HEIGHT,
 		                            mouseX.toInt(), mouseY.toInt(),
@@ -299,6 +329,78 @@ class StorageOverlayScreen : Screen(Text.literal("")) {
 		return false
 	}
 
+	override fun charTyped(chr: Char, modifiers: Int): Boolean {
+		if (typeMCComponentInPlace(
+				controlComponent,
+				measurements.controlX, measurements.controlY,
+				CONTROL_WIDTH, CONTROL_HEIGHT,
+				KeyboardEvent.CharTyped(chr)
+			)
+		) {
+			return true
+		}
+		return super.charTyped(chr, modifiers)
+	}
+
+	override fun keyReleased(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+		if (typeMCComponentInPlace(
+				controlComponent,
+				measurements.controlX, measurements.controlY,
+				CONTROL_WIDTH, CONTROL_HEIGHT,
+				KeyboardEvent.KeyPressed(keyCode, false)
+			)
+		) {
+			return true
+		}
+		return super.keyReleased(keyCode, scanCode, modifiers)
+	}
+
+	override fun keyPressed(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+		if (typeMCComponentInPlace(
+				controlComponent,
+				measurements.controlX, measurements.controlY,
+				CONTROL_WIDTH, CONTROL_HEIGHT,
+				KeyboardEvent.KeyPressed(keyCode, true)
+			)
+		) {
+			return true
+		}
+		return super.keyPressed(keyCode, scanCode, modifiers)
+	}
+
+
+	var searchCache: String? = null
+	var filteredPagesCache = setOf<StoragePageSlot>()
+
+	fun getFilteredPages(): Set<StoragePageSlot> {
+		val searchValue = searchText.get()
+		val data = StorageOverlay.Data.data ?: return filteredPagesCache // Do not update cache if data is missing
+		if (searchCache == searchValue) return filteredPagesCache
+		val result =
+			data.storageInventories
+				.entries.asSequence()
+				.filter { it.value.inventory?.stacks?.any { matchesSearch(it, searchValue) } ?: true }
+				.map { it.key }
+				.toSet()
+		searchCache = searchValue
+		filteredPagesCache = result
+		return result
+	}
+
+
+	fun matchesSearch(itemStack: ItemStack, search: String): Boolean {
+		val searchWords = search.words().toCollection(TreeSet())
+		fun removePrefixes(value: String) {
+			searchWords.removeIf { value.contains(it, ignoreCase = true) }
+		}
+		itemStack.displayNameAccordingToNbt.unformattedString.words().forEach(::removePrefixes)
+		if (searchWords.isEmpty()) return true
+		itemStack.loreAccordingToNbt.forEach {
+			it.unformattedString.words().forEach(::removePrefixes)
+		}
+		return searchWords.isEmpty()
+	}
+
 	private inline fun layoutedForEach(
 		data: StorageData,
 		func: (
@@ -309,7 +411,9 @@ class StorageOverlayScreen : Screen(Text.literal("")) {
 		var yOffset = -scroll.toInt()
 		var xOffset = 0
 		var maxHeight = 0
+		val filter = getFilteredPages()
 		for ((page, inventory) in data.storageInventories.entries) {
+			if (page !in filter) continue
 			val currentHeight = inventory.inventory?.let { it.rows * SLOT_SIZE + 4 + textRenderer.fontHeight }
 				?: 18
 			maxHeight = maxOf(maxHeight, currentHeight)
diff --git a/src/main/kotlin/util/MoulConfigUtils.kt b/src/main/kotlin/util/MoulConfigUtils.kt
index 2e52092..62bf3dd 100644
--- a/src/main/kotlin/util/MoulConfigUtils.kt
+++ b/src/main/kotlin/util/MoulConfigUtils.kt
@@ -7,6 +7,7 @@ import io.github.notenoughupdates.moulconfig.gui.GuiComponent
 import io.github.notenoughupdates.moulconfig.gui.GuiComponentWrapper
 import io.github.notenoughupdates.moulconfig.gui.GuiContext
 import io.github.notenoughupdates.moulconfig.gui.GuiImmediateContext
+import io.github.notenoughupdates.moulconfig.gui.KeyboardEvent
 import io.github.notenoughupdates.moulconfig.gui.MouseEvent
 import io.github.notenoughupdates.moulconfig.observer.GetSetter
 import io.github.notenoughupdates.moulconfig.platform.ModernRenderContext
@@ -247,6 +248,18 @@ object MoulConfigUtils {
 		}
 	}
 
+	fun typeMCComponentInPlace(
+		component: GuiComponent,
+		x: Int,
+		y: Int,
+		w: Int,
+		h: Int,
+		keyboardEvent: KeyboardEvent
+	): Boolean {
+		val immContext = createInPlaceFullContext(null, IMinecraft.instance.mouseX, IMinecraft.instance.mouseY)
+		return component.keyboardEvent(keyboardEvent, immContext.translated(x, y, w, h))
+	}
+
 	fun clickMCComponentInPlace(
 		component: GuiComponent,
 		x: Int,
diff --git a/src/main/kotlin/util/StringUtil.kt b/src/main/kotlin/util/StringUtil.kt
index f080d5a..68e161a 100644
--- a/src/main/kotlin/util/StringUtil.kt
+++ b/src/main/kotlin/util/StringUtil.kt
@@ -10,4 +10,13 @@ object StringUtil {
 	}
 
 	fun Iterable<String>.unwords() = joinToString(" ")
+	fun nextLexicographicStringOfSameLength(string: String): String {
+		val next = StringBuilder(string)
+		while (next.lastOrNull() == Character.MAX_VALUE) next.setLength(next.length - 1)
+		if (next.isEmpty()) return "" // There is no upper bound. Fall back to the empty string
+		val lastIdx = next.indices.last
+		next[lastIdx] = (next[lastIdx] + 1)
+		return next.toString()
+	}
+
 }
diff --git a/src/main/kotlin/util/customgui/CustomGui.kt b/src/main/kotlin/util/customgui/CustomGui.kt
index 5224448..35c60ac 100644
--- a/src/main/kotlin/util/customgui/CustomGui.kt
+++ b/src/main/kotlin/util/customgui/CustomGui.kt
@@ -76,4 +76,16 @@ abstract class CustomGui {
 	open fun mouseDragged(mouseX: Double, mouseY: Double, button: Int, deltaX: Double, deltaY: Double): Boolean {
 		return false
 	}
+
+	open fun keyPressed(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+		return false
+	}
+
+	open fun charTyped(chr: Char, modifiers: Int): Boolean {
+		return false
+	}
+
+	open fun keyReleased(keyCode: Int, scanCode: Int, modifiers: Int): Boolean {
+		return false
+	}
 }