src/game/java/net/minecraft/client/gui/components/AbstractTextAreaWidget.java

package net.minecraft.client.gui.components;

import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.client.sounds.SoundManager;
import net.minecraft.network.chat.Component;
import net.minecraft.resources.ResourceLocation;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public abstract class AbstractTextAreaWidget extends AbstractScrollArea {
    private static final WidgetSprites BACKGROUND_SPRITES = new WidgetSprites(
        ResourceLocation.withDefaultNamespace("widget/text_field"), ResourceLocation.withDefaultNamespace("widget/text_field_highlighted")
    );
    private static final int INNER_PADDING = 4;

    public AbstractTextAreaWidget(int p_378028_, int p_375960_, int p_376988_, int p_376757_, Component p_378529_) {
        super(p_378028_, p_375960_, p_376988_, p_376757_, p_378529_);
    }

    @Override
    public boolean mouseClicked(double p_375702_, double p_378084_, int p_377941_) {
        boolean flag = this.updateScrolling(p_375702_, p_378084_, p_377941_);
        return super.mouseClicked(p_375702_, p_378084_, p_377941_) || flag;
    }

    @Override
    public boolean keyPressed(int p_378364_, int p_377961_, int p_378789_) {
        boolean flag = p_378364_ == 265;
        boolean flag1 = p_378364_ == 264;
        if (flag || flag1) {
            double d0 = this.scrollAmount();
            this.setScrollAmount(this.scrollAmount() + (double)(flag ? -1 : 1) * this.scrollRate());
            if (d0 != this.scrollAmount()) {
                return true;
            }
        }

        return super.keyPressed(p_378364_, p_377961_, p_378789_);
    }

    @Override
    public void renderWidget(GuiGraphics p_376330_, int p_376585_, int p_376181_, float p_376214_) {
        if (this.visible) {
            this.renderBackground(p_376330_);
            p_376330_.enableScissor(this.getX() + 1, this.getY() + 1, this.getX() + this.width - 1, this.getY() + this.height - 1);
            p_376330_.pose().pushPose();
            p_376330_.pose().translate(0.0, -this.scrollAmount(), 0.0);
            this.renderContents(p_376330_, p_376585_, p_376181_, p_376214_);
            p_376330_.pose().popPose();
            p_376330_.disableScissor();
            this.renderDecorations(p_376330_);
        }
    }

    protected void renderDecorations(GuiGraphics p_376435_) {
        this.renderScrollbar(p_376435_);
    }

    protected int innerPadding() {
        return 4;
    }

    protected int totalInnerPadding() {
        return this.innerPadding() * 2;
    }

    @Override
    public boolean isMouseOver(double p_376364_, double p_377350_) {
        return this.active
            && this.visible
            && p_376364_ >= (double)this.getX()
            && p_377350_ >= (double)this.getY()
            && p_376364_ < (double)(this.getRight() + 6)
            && p_377350_ < (double)this.getBottom();
    }

    @Override
    protected int scrollBarX() {
        return this.getRight();
    }

    @Override
    protected int contentHeight() {
        return this.getInnerHeight() + this.totalInnerPadding();
    }

    protected void renderBackground(GuiGraphics p_378043_) {
        this.renderBorder(p_378043_, this.getX(), this.getY(), this.getWidth(), this.getHeight());
    }

    protected void renderBorder(GuiGraphics p_376239_, int p_378450_, int p_375463_, int p_377865_, int p_375612_) {
        ResourceLocation resourcelocation = BACKGROUND_SPRITES.get(this.isActive(), this.isFocused());
        p_376239_.blitSprite(RenderType::guiTextured, resourcelocation, p_378450_, p_375463_, p_377865_, p_375612_);
    }

    protected boolean withinContentAreaTopBottom(int p_376309_, int p_378518_) {
        return (double)p_378518_ - this.scrollAmount() >= (double)this.getY()
            && (double)p_376309_ - this.scrollAmount() <= (double)(this.getY() + this.height);
    }

    protected abstract int getInnerHeight();

    protected abstract void renderContents(GuiGraphics p_375874_, int p_377970_, int p_376165_, float p_376358_);

    protected int getInnerLeft() {
        return this.getX() + this.innerPadding();
    }

    protected int getInnerTop() {
        return this.getY() + this.innerPadding();
    }

    @Override
    public void playDownSound(SoundManager p_378011_) {
    }
}