minecraft-src/net/minecraft/client/gui/screens/recipebook/RecipeButton.java

package net.minecraft.client.gui.screens.recipebook;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.gui.components.AbstractWidget;
import net.minecraft.client.gui.narration.NarratedElementType;
import net.minecraft.client.gui.narration.NarrationElementOutput;
import net.minecraft.client.gui.screens.Screen;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.util.context.ContextMap;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.crafting.display.RecipeDisplayEntry;
import net.minecraft.world.item.crafting.display.RecipeDisplayId;

@Environment(EnvType.CLIENT)
public class RecipeButton extends AbstractWidget {
	private static final ResourceLocation SLOT_MANY_CRAFTABLE_SPRITE = ResourceLocation.withDefaultNamespace("recipe_book/slot_many_craftable");
	private static final ResourceLocation SLOT_CRAFTABLE_SPRITE = ResourceLocation.withDefaultNamespace("recipe_book/slot_craftable");
	private static final ResourceLocation SLOT_MANY_UNCRAFTABLE_SPRITE = ResourceLocation.withDefaultNamespace("recipe_book/slot_many_uncraftable");
	private static final ResourceLocation SLOT_UNCRAFTABLE_SPRITE = ResourceLocation.withDefaultNamespace("recipe_book/slot_uncraftable");
	private static final float ANIMATION_TIME = 15.0F;
	private static final int BACKGROUND_SIZE = 25;
	private static final Component MORE_RECIPES_TOOLTIP = Component.translatable("gui.recipebook.moreRecipes");
	private RecipeCollection collection = RecipeCollection.EMPTY;
	private List<RecipeButton.ResolvedEntry> selectedEntries = List.of();
	private boolean allRecipesHaveSameResultDisplay;
	private final SlotSelectTime slotSelectTime;
	private float animationTime;

	public RecipeButton(SlotSelectTime slotSelectTime) {
		super(0, 0, 25, 25, CommonComponents.EMPTY);
		this.slotSelectTime = slotSelectTime;
	}

	public void init(RecipeCollection collection, boolean isFiltering, RecipeBookPage page, ContextMap contextMap) {
		this.collection = collection;
		List<RecipeDisplayEntry> list = collection.getSelectedRecipes(isFiltering ? RecipeCollection.CraftableStatus.CRAFTABLE : RecipeCollection.CraftableStatus.ANY);
		this.selectedEntries = list.stream()
			.map(recipeDisplayEntry -> new RecipeButton.ResolvedEntry(recipeDisplayEntry.id(), recipeDisplayEntry.resultItems(contextMap)))
			.toList();
		this.allRecipesHaveSameResultDisplay = allRecipesHaveSameResultDisplay(this.selectedEntries);
		List<RecipeDisplayId> list2 = list.stream().map(RecipeDisplayEntry::id).filter(page.getRecipeBook()::willHighlight).toList();
		if (!list2.isEmpty()) {
			list2.forEach(page::recipeShown);
			this.animationTime = 15.0F;
		}
	}

	private static boolean allRecipesHaveSameResultDisplay(List<RecipeButton.ResolvedEntry> entries) {
		Iterator<ItemStack> iterator = entries.stream().flatMap(resolvedEntry -> resolvedEntry.displayItems().stream()).iterator();
		if (!iterator.hasNext()) {
			return true;
		} else {
			ItemStack itemStack = (ItemStack)iterator.next();

			while (iterator.hasNext()) {
				ItemStack itemStack2 = (ItemStack)iterator.next();
				if (!ItemStack.isSameItemSameComponents(itemStack, itemStack2)) {
					return false;
				}
			}

			return true;
		}
	}

	public RecipeCollection getCollection() {
		return this.collection;
	}

	@Override
	public void renderWidget(GuiGraphics guiGraphics, int mouseX, int mouseY, float partialTick) {
		ResourceLocation resourceLocation;
		if (this.collection.hasCraftable()) {
			if (this.hasMultipleRecipes()) {
				resourceLocation = SLOT_MANY_CRAFTABLE_SPRITE;
			} else {
				resourceLocation = SLOT_CRAFTABLE_SPRITE;
			}
		} else if (this.hasMultipleRecipes()) {
			resourceLocation = SLOT_MANY_UNCRAFTABLE_SPRITE;
		} else {
			resourceLocation = SLOT_UNCRAFTABLE_SPRITE;
		}

		boolean bl = this.animationTime > 0.0F;
		if (bl) {
			float f = 1.0F + 0.1F * (float)Math.sin(this.animationTime / 15.0F * (float) Math.PI);
			guiGraphics.pose().pushPose();
			guiGraphics.pose().translate((float)(this.getX() + 8), (float)(this.getY() + 12), 0.0F);
			guiGraphics.pose().scale(f, f, 1.0F);
			guiGraphics.pose().translate((float)(-(this.getX() + 8)), (float)(-(this.getY() + 12)), 0.0F);
			this.animationTime -= partialTick;
		}

		guiGraphics.blitSprite(RenderType::guiTextured, resourceLocation, this.getX(), this.getY(), this.width, this.height);
		ItemStack itemStack = this.getDisplayStack();
		int i = 4;
		if (this.hasMultipleRecipes() && this.allRecipesHaveSameResultDisplay) {
			guiGraphics.renderItem(itemStack, this.getX() + i + 1, this.getY() + i + 1, 0, 10);
			i--;
		}

		guiGraphics.renderFakeItem(itemStack, this.getX() + i, this.getY() + i);
		if (bl) {
			guiGraphics.pose().popPose();
		}
	}

	private boolean hasMultipleRecipes() {
		return this.selectedEntries.size() > 1;
	}

	public boolean isOnlyOption() {
		return this.selectedEntries.size() == 1;
	}

	public RecipeDisplayId getCurrentRecipe() {
		int i = this.slotSelectTime.currentIndex() % this.selectedEntries.size();
		return ((RecipeButton.ResolvedEntry)this.selectedEntries.get(i)).id;
	}

	public ItemStack getDisplayStack() {
		int i = this.slotSelectTime.currentIndex();
		int j = this.selectedEntries.size();
		int k = i / j;
		int l = i - j * k;
		return ((RecipeButton.ResolvedEntry)this.selectedEntries.get(l)).selectItem(k);
	}

	public List<Component> getTooltipText(ItemStack stack) {
		List<Component> list = new ArrayList(Screen.getTooltipFromItem(Minecraft.getInstance(), stack));
		if (this.hasMultipleRecipes()) {
			list.add(MORE_RECIPES_TOOLTIP);
		}

		return list;
	}

	@Override
	public void updateWidgetNarration(NarrationElementOutput narrationElementOutput) {
		narrationElementOutput.add(NarratedElementType.TITLE, Component.translatable("narration.recipe", this.getDisplayStack().getHoverName()));
		if (this.hasMultipleRecipes()) {
			narrationElementOutput.add(
				NarratedElementType.USAGE, Component.translatable("narration.button.usage.hovered"), Component.translatable("narration.recipe.usage.more")
			);
		} else {
			narrationElementOutput.add(NarratedElementType.USAGE, Component.translatable("narration.button.usage.hovered"));
		}
	}

	@Override
	public int getWidth() {
		return 25;
	}

	@Override
	protected boolean isValidClickButton(int button) {
		return button == 0 || button == 1;
	}

	@Environment(EnvType.CLIENT)
	record ResolvedEntry(RecipeDisplayId id, List<ItemStack> displayItems) {

		public ItemStack selectItem(int index) {
			if (this.displayItems.isEmpty()) {
				return ItemStack.EMPTY;
			} else {
				int i = index % this.displayItems.size();
				return (ItemStack)this.displayItems.get(i);
			}
		}
	}
}