minecraft-src/com/mojang/realmsclient/gui/screens/configuration/RealmsPreferredRegionSelectionScreen.java

package com.mojang.realmsclient.gui.screens.configuration;

import com.mojang.realmsclient.dto.RealmsRegion;
import com.mojang.realmsclient.dto.RegionSelectionPreference;
import com.mojang.realmsclient.dto.ServiceQuality;
import java.util.Map;
import java.util.Objects;
import java.util.function.BiConsumer;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.gui.components.AbstractWidget;
import net.minecraft.client.gui.components.Button;
import net.minecraft.client.gui.components.ObjectSelectionList;
import net.minecraft.client.gui.components.StringWidget;
import net.minecraft.client.gui.layouts.HeaderAndFooterLayout;
import net.minecraft.client.gui.layouts.LinearLayout;
import net.minecraft.client.gui.screens.Screen;
import net.minecraft.client.renderer.RenderPipelines;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import org.jetbrains.annotations.Nullable;

@Environment(EnvType.CLIENT)
public class RealmsPreferredRegionSelectionScreen extends Screen {
	private static final Component REGION_SELECTION_LABEL = Component.translatable("mco.configure.world.region_preference.title");
	private static final int SPACING = 8;
	private final HeaderAndFooterLayout layout = new HeaderAndFooterLayout(this);
	private final Screen parent;
	private final BiConsumer<RegionSelectionPreference, RealmsRegion> applySettings;
	final Map<RealmsRegion, ServiceQuality> regionServiceQuality;
	@Nullable
	private RealmsPreferredRegionSelectionScreen.RegionSelectionList list;
	RealmsSettingsTab.RegionSelection selection;
	@Nullable
	private Button doneButton;

	public RealmsPreferredRegionSelectionScreen(
		Screen parent,
		BiConsumer<RegionSelectionPreference, RealmsRegion> applySettings,
		Map<RealmsRegion, ServiceQuality> regionServiceQuality,
		RealmsSettingsTab.RegionSelection selection
	) {
		super(REGION_SELECTION_LABEL);
		this.parent = parent;
		this.applySettings = applySettings;
		this.regionServiceQuality = regionServiceQuality;
		this.selection = selection;
	}

	@Override
	public void onClose() {
		this.minecraft.setScreen(this.parent);
	}

	@Override
	protected void init() {
		LinearLayout linearLayout = this.layout.addToHeader(LinearLayout.vertical().spacing(8));
		linearLayout.defaultCellSetting().alignHorizontallyCenter();
		linearLayout.addChild(new StringWidget(this.getTitle(), this.font));
		this.list = this.layout.addToContents(new RealmsPreferredRegionSelectionScreen.RegionSelectionList());
		LinearLayout linearLayout2 = this.layout.addToFooter(LinearLayout.horizontal().spacing(8));
		this.doneButton = linearLayout2.addChild(Button.builder(CommonComponents.GUI_DONE, button -> {
			this.applySettings.accept(this.selection.preference(), this.selection.region());
			this.onClose();
		}).build());
		linearLayout2.addChild(Button.builder(CommonComponents.GUI_CANCEL, button -> this.onClose()).build());
		this.list
			.setSelected(
				(RealmsPreferredRegionSelectionScreen.RegionSelectionList.Entry)this.list
					.children()
					.stream()
					.filter(entry -> Objects.equals(entry.regionSelection, this.selection))
					.findFirst()
					.orElse(null)
			);
		this.layout.visitWidgets(guiEventListener -> {
			AbstractWidget var10000 = this.addRenderableWidget(guiEventListener);
		});
		this.repositionElements();
	}

	@Override
	protected void repositionElements() {
		this.layout.arrangeElements();
		this.list.updateSize(this.width, this.layout);
	}

	void updateButtonValidity() {
		this.doneButton.active = this.list.getSelected() != null;
	}

	@Environment(EnvType.CLIENT)
	class RegionSelectionList extends ObjectSelectionList<RealmsPreferredRegionSelectionScreen.RegionSelectionList.Entry> {
		RegionSelectionList() {
			super(
				RealmsPreferredRegionSelectionScreen.this.minecraft,
				RealmsPreferredRegionSelectionScreen.this.width,
				RealmsPreferredRegionSelectionScreen.this.height - 77,
				40,
				16
			);
			this.addEntry(new RealmsPreferredRegionSelectionScreen.RegionSelectionList.Entry(RegionSelectionPreference.AUTOMATIC_PLAYER, null));
			this.addEntry(new RealmsPreferredRegionSelectionScreen.RegionSelectionList.Entry(RegionSelectionPreference.AUTOMATIC_OWNER, null));
			RealmsPreferredRegionSelectionScreen.this.regionServiceQuality
				.keySet()
				.stream()
				.map(realmsRegion -> new RealmsPreferredRegionSelectionScreen.RegionSelectionList.Entry(RegionSelectionPreference.MANUAL, realmsRegion))
				.forEach(entry -> this.addEntry(entry));
		}

		public void setSelected(@Nullable RealmsPreferredRegionSelectionScreen.RegionSelectionList.Entry selected) {
			super.setSelected(selected);
			if (selected != null) {
				RealmsPreferredRegionSelectionScreen.this.selection = selected.regionSelection;
			}

			RealmsPreferredRegionSelectionScreen.this.updateButtonValidity();
		}

		@Environment(EnvType.CLIENT)
		class Entry extends ObjectSelectionList.Entry<RealmsPreferredRegionSelectionScreen.RegionSelectionList.Entry> {
			final RealmsSettingsTab.RegionSelection regionSelection;
			private final Component name;

			public Entry(final RegionSelectionPreference regionSelectionPreference, @Nullable final RealmsRegion preferredRegion) {
				this(new RealmsSettingsTab.RegionSelection(regionSelectionPreference, preferredRegion));
			}

			public Entry(final RealmsSettingsTab.RegionSelection regionSelection) {
				this.regionSelection = regionSelection;
				if (regionSelection.preference() == RegionSelectionPreference.MANUAL) {
					if (regionSelection.region() != null) {
						this.name = Component.translatable(regionSelection.region().translationKey);
					} else {
						this.name = Component.empty();
					}
				} else {
					this.name = Component.translatable(regionSelection.preference().translationKey);
				}
			}

			@Override
			public Component getNarration() {
				return Component.translatable("narrator.select", this.name);
			}

			@Override
			public void render(GuiGraphics guiGraphics, int index, int top, int left, int width, int height, int mouseX, int mouseY, boolean hovering, float partialTick) {
				guiGraphics.drawString(RealmsPreferredRegionSelectionScreen.this.font, this.name, left + 5, top + 2, -1);
				if (this.regionSelection.region() != null && RealmsPreferredRegionSelectionScreen.this.regionServiceQuality.containsKey(this.regionSelection.region())) {
					ServiceQuality serviceQuality = (ServiceQuality)RealmsPreferredRegionSelectionScreen.this.regionServiceQuality
						.getOrDefault(this.regionSelection.region(), ServiceQuality.UNKNOWN);
					guiGraphics.blitSprite(RenderPipelines.GUI_TEXTURED, serviceQuality.getIcon(), left + width - 18, top + 2, 10, 8);
				}
			}

			@Override
			public boolean mouseClicked(double mouseX, double mouseY, int button) {
				RegionSelectionList.this.setSelected(this);
				return super.mouseClicked(mouseX, mouseY, button);
			}
		}
	}
}