Code/net/minecraft/client/gui/screens/EditServerScreen.java

package net.minecraft.client.gui.screens;

import it.unimi.dsi.fastutil.booleans.BooleanConsumer;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.gui.components.Button;
import net.minecraft.client.gui.components.CycleButton;
import net.minecraft.client.gui.components.EditBox;
import net.minecraft.client.multiplayer.ServerData;
import net.minecraft.client.multiplayer.resolver.ServerAddress;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class EditServerScreen extends Screen {
    private static final Component NAME_LABEL = Component.translatable("addServer.enterName");
    private static final Component IP_LABEL = Component.translatable("addServer.enterIp");
    private Button addButton;
    private final BooleanConsumer callback;
    private final ServerData serverData;
    private EditBox ipEdit;
    private EditBox nameEdit;
    private final Screen lastScreen;

    public EditServerScreen(Screen p_96017_, BooleanConsumer p_96018_, ServerData p_96019_) {
        super(Component.translatable("addServer.title"));
        this.lastScreen = p_96017_;
        this.callback = p_96018_;
        this.serverData = p_96019_;
    }

    @Override
    protected void init() {
        this.nameEdit = new EditBox(this.font, this.width / 2 - 100, 66, 200, 20, Component.translatable("addServer.enterName"));
        this.nameEdit.setValue(this.serverData.name);
        this.nameEdit.setResponder(p_169304_ -> this.updateAddButtonStatus());
        this.addWidget(this.nameEdit);
        this.ipEdit = new EditBox(this.font, this.width / 2 - 100, 106, 200, 20, Component.translatable("addServer.enterIp"));
        this.ipEdit.setMaxLength(128);
        this.ipEdit.setValue(this.serverData.ip);
        this.ipEdit.setResponder(p_169302_ -> this.updateAddButtonStatus());
        this.addWidget(this.ipEdit);
        this.addRenderableWidget(
            CycleButton.builder(ServerData.ServerPackStatus::getName)
                .withValues(ServerData.ServerPackStatus.values())
                .withInitialValue(this.serverData.getResourcePackStatus())
                .create(
                    this.width / 2 - 100,
                    this.height / 4 + 72,
                    200,
                    20,
                    Component.translatable("addServer.resourcePack"),
                    (p_169299_, p_169300_) -> this.serverData.setResourcePackStatus(p_169300_)
                )
        );
        this.addButton = this.addRenderableWidget(
            Button.builder(Component.translatable("addServer.add"), p_96030_ -> this.onAdd())
                .bounds(this.width / 2 - 100, this.height / 4 + 96 + 18, 200, 20)
                .build()
        );
        this.addRenderableWidget(
            Button.builder(CommonComponents.GUI_CANCEL, p_169297_ -> this.callback.accept(false))
                .bounds(this.width / 2 - 100, this.height / 4 + 120 + 18, 200, 20)
                .build()
        );
        this.updateAddButtonStatus();
    }

    @Override
    protected void setInitialFocus() {
        this.setInitialFocus(this.nameEdit);
    }

    @Override
    public void resize(Minecraft p_96026_, int p_96027_, int p_96028_) {
        String s = this.ipEdit.getValue();
        String s1 = this.nameEdit.getValue();
        this.init(p_96026_, p_96027_, p_96028_);
        this.ipEdit.setValue(s);
        this.nameEdit.setValue(s1);
    }

    private void onAdd() {
        this.serverData.name = this.nameEdit.getValue();
        this.serverData.ip = this.ipEdit.getValue();
        this.callback.accept(true);
    }

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

    private void updateAddButtonStatus() {
        this.addButton.active = ServerAddress.isValidAddress(this.ipEdit.getValue()) && !this.nameEdit.getValue().isEmpty();
    }

    @Override
    public void render(GuiGraphics p_282351_, int p_96022_, int p_96023_, float p_96024_) {
        super.render(p_282351_, p_96022_, p_96023_, p_96024_);
        p_282351_.drawCenteredString(this.font, this.title, this.width / 2, 17, 16777215);
        p_282351_.drawString(this.font, NAME_LABEL, this.width / 2 - 100 + 1, 53, 10526880);
        p_282351_.drawString(this.font, IP_LABEL, this.width / 2 - 100 + 1, 94, 10526880);
        this.nameEdit.render(p_282351_, p_96022_, p_96023_, p_96024_);
        this.ipEdit.render(p_282351_, p_96022_, p_96023_, p_96024_);
    }
}