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

package net.minecraft.client.gui.components;

import java.util.Objects;
import java.util.function.BiFunction;
import java.util.function.Consumer;
import java.util.function.Predicate;
import javax.annotation.Nullable;
import net.minecraft.Util;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Font;
import net.minecraft.client.gui.GuiGraphics;
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.client.sounds.SoundManager;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.MutableComponent;
import net.minecraft.network.chat.Style;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.util.FormattedCharSequence;
import net.minecraft.util.Mth;
import net.minecraft.util.StringUtil;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class EditBox extends AbstractWidget {
    private static final WidgetSprites SPRITES = new WidgetSprites(
        ResourceLocation.withDefaultNamespace("widget/text_field"), ResourceLocation.withDefaultNamespace("widget/text_field_highlighted")
    );
    public static final int BACKWARDS = -1;
    public static final int FORWARDS = 1;
    private static final int CURSOR_INSERT_WIDTH = 1;
    private static final int CURSOR_INSERT_COLOR = -3092272;
    private static final String CURSOR_APPEND_CHARACTER = "_";
    public static final int DEFAULT_TEXT_COLOR = 14737632;
    private static final int CURSOR_BLINK_INTERVAL_MS = 300;
    private final Font font;
    private String value = "";
    private int maxLength = 32;
    private boolean bordered = true;
    private boolean canLoseFocus = true;
    private boolean isEditable = true;
    private int displayPos;
    private int cursorPos;
    private int highlightPos;
    private int textColor = 14737632;
    private int textColorUneditable = 7368816;
    @Nullable
    private String suggestion;
    @Nullable
    private Consumer<String> responder;
    private Predicate<String> filter = Objects::nonNull;
    private BiFunction<String, Integer, FormattedCharSequence> formatter = (p_94147_, p_94148_) -> FormattedCharSequence.forward(p_94147_, Style.EMPTY);
    @Nullable
    private Component hint;
    private long focusedTime = Util.getMillis();

    public EditBox(Font p_299161_, int p_299570_, int p_297565_, Component p_300284_) {
        this(p_299161_, 0, 0, p_299570_, p_297565_, p_300284_);
    }

    public EditBox(Font p_94114_, int p_94115_, int p_94116_, int p_94117_, int p_94118_, Component p_94119_) {
        this(p_94114_, p_94115_, p_94116_, p_94117_, p_94118_, null, p_94119_);
    }

    public EditBox(Font p_94106_, int p_94107_, int p_94108_, int p_94109_, int p_94110_, @Nullable EditBox p_94111_, Component p_94112_) {
        super(p_94107_, p_94108_, p_94109_, p_94110_, p_94112_);
        this.font = p_94106_;
        if (p_94111_ != null) {
            this.setValue(p_94111_.getValue());
        }
    }

    public void setResponder(Consumer<String> p_94152_) {
        this.responder = p_94152_;
    }

    public void setFormatter(BiFunction<String, Integer, FormattedCharSequence> p_94150_) {
        this.formatter = p_94150_;
    }

    @Override
    protected MutableComponent createNarrationMessage() {
        Component component = this.getMessage();
        return Component.translatable("gui.narrate.editBox", component, this.value);
    }

    public void setValue(String p_94145_) {
        if (this.filter.test(p_94145_)) {
            if (p_94145_.length() > this.maxLength) {
                this.value = p_94145_.substring(0, this.maxLength);
            } else {
                this.value = p_94145_;
            }

            this.moveCursorToEnd(false);
            this.setHighlightPos(this.cursorPos);
            this.onValueChange(p_94145_);
        }
    }

    public String getValue() {
        return this.value;
    }

    public String getHighlighted() {
        int i = Math.min(this.cursorPos, this.highlightPos);
        int j = Math.max(this.cursorPos, this.highlightPos);
        return this.value.substring(i, j);
    }

    public void setFilter(Predicate<String> p_94154_) {
        this.filter = p_94154_;
    }

    public void insertText(String p_94165_) {
        int i = Math.min(this.cursorPos, this.highlightPos);
        int j = Math.max(this.cursorPos, this.highlightPos);
        int k = this.maxLength - this.value.length() - (i - j);
        if (k > 0) {
            String s = StringUtil.filterText(p_94165_);
            int l = s.length();
            if (k < l) {
                if (Character.isHighSurrogate(s.charAt(k - 1))) {
                    k--;
                }

                s = s.substring(0, k);
                l = k;
            }

            String s1 = new StringBuilder(this.value).replace(i, j, s).toString();
            if (this.filter.test(s1)) {
                this.value = s1;
                this.setCursorPosition(i + l);
                this.setHighlightPos(this.cursorPos);
                this.onValueChange(this.value);
            }
        }
    }

    private void onValueChange(String p_94175_) {
        if (this.responder != null) {
            this.responder.accept(p_94175_);
        }
    }

    private void deleteText(int p_94218_) {
        if (Screen.hasControlDown()) {
            this.deleteWords(p_94218_);
        } else {
            this.deleteChars(p_94218_);
        }
    }

    public void deleteWords(int p_94177_) {
        if (!this.value.isEmpty()) {
            if (this.highlightPos != this.cursorPos) {
                this.insertText("");
            } else {
                this.deleteCharsToPos(this.getWordPosition(p_94177_));
            }
        }
    }

    public void deleteChars(int p_94181_) {
        this.deleteCharsToPos(this.getCursorPos(p_94181_));
    }

    public void deleteCharsToPos(int p_310763_) {
        if (!this.value.isEmpty()) {
            if (this.highlightPos != this.cursorPos) {
                this.insertText("");
            } else {
                int i = Math.min(p_310763_, this.cursorPos);
                int j = Math.max(p_310763_, this.cursorPos);
                if (i != j) {
                    String s = new StringBuilder(this.value).delete(i, j).toString();
                    if (this.filter.test(s)) {
                        this.value = s;
                        this.moveCursorTo(i, false);
                    }
                }
            }
        }
    }

    public int getWordPosition(int p_94185_) {
        return this.getWordPosition(p_94185_, this.getCursorPosition());
    }

    private int getWordPosition(int p_94129_, int p_94130_) {
        return this.getWordPosition(p_94129_, p_94130_, true);
    }

    private int getWordPosition(int p_94141_, int p_94142_, boolean p_94143_) {
        int i = p_94142_;
        boolean flag = p_94141_ < 0;
        int j = Math.abs(p_94141_);

        for (int k = 0; k < j; k++) {
            if (!flag) {
                int l = this.value.length();
                i = this.value.indexOf(32, i);
                if (i == -1) {
                    i = l;
                } else {
                    while (p_94143_ && i < l && this.value.charAt(i) == ' ') {
                        i++;
                    }
                }
            } else {
                while (p_94143_ && i > 0 && this.value.charAt(i - 1) == ' ') {
                    i--;
                }

                while (i > 0 && this.value.charAt(i - 1) != ' ') {
                    i--;
                }
            }
        }

        return i;
    }

    public void moveCursor(int p_94189_, boolean p_297286_) {
        this.moveCursorTo(this.getCursorPos(p_94189_), p_297286_);
    }

    private int getCursorPos(int p_94221_) {
        return Util.offsetByCodepoints(this.value, this.cursorPos, p_94221_);
    }

    public void moveCursorTo(int p_94193_, boolean p_300521_) {
        this.setCursorPosition(p_94193_);
        if (!p_300521_) {
            this.setHighlightPos(this.cursorPos);
        }

        this.onValueChange(this.value);
    }

    public void setCursorPosition(int p_94197_) {
        this.cursorPos = Mth.clamp(p_94197_, 0, this.value.length());
        this.scrollTo(this.cursorPos);
    }

    public void moveCursorToStart(boolean p_299543_) {
        this.moveCursorTo(0, p_299543_);
    }

    public void moveCursorToEnd(boolean p_297711_) {
        this.moveCursorTo(this.value.length(), p_297711_);
    }

    @Override
    public boolean keyPressed(int p_94132_, int p_94133_, int p_94134_) {
        if (this.isActive() && this.isFocused()) {
            switch (p_94132_) {
                case 259:
                    if (this.isEditable) {
                        this.deleteText(-1);
                    }

                    return true;
                case 260:
                case 264:
                case 265:
                case 266:
                case 267:
                default:
                    if (Screen.isSelectAll(p_94132_)) {
                        this.moveCursorToEnd(false);
                        this.setHighlightPos(0);
                        return true;
                    } else if (Screen.isCopy(p_94132_)) {
                        Minecraft.getInstance().keyboardHandler.setClipboard(this.getHighlighted());
                        return true;
                    } else if (Screen.isPaste(p_94132_)) {
                        if (this.isEditable()) {
                            this.insertText(Minecraft.getInstance().keyboardHandler.getClipboard());
                        }

                        return true;
                    } else {
                        if (Screen.isCut(p_94132_)) {
                            Minecraft.getInstance().keyboardHandler.setClipboard(this.getHighlighted());
                            if (this.isEditable()) {
                                this.insertText("");
                            }

                            return true;
                        }

                        return false;
                    }
                case 261:
                    if (this.isEditable) {
                        this.deleteText(1);
                    }

                    return true;
                case 262:
                    if (Screen.hasControlDown()) {
                        this.moveCursorTo(this.getWordPosition(1), Screen.hasShiftDown());
                    } else {
                        this.moveCursor(1, Screen.hasShiftDown());
                    }

                    return true;
                case 263:
                    if (Screen.hasControlDown()) {
                        this.moveCursorTo(this.getWordPosition(-1), Screen.hasShiftDown());
                    } else {
                        this.moveCursor(-1, Screen.hasShiftDown());
                    }

                    return true;
                case 268:
                    this.moveCursorToStart(Screen.hasShiftDown());
                    return true;
                case 269:
                    this.moveCursorToEnd(Screen.hasShiftDown());
                    return true;
            }
        } else {
            return false;
        }
    }

    public boolean canConsumeInput() {
        return this.isActive() && this.isFocused() && this.isEditable();
    }

    @Override
    public boolean charTyped(char p_94122_, int p_94123_) {
        if (!this.canConsumeInput()) {
            return false;
        } else if (StringUtil.isAllowedChatCharacter(p_94122_)) {
            if (this.isEditable) {
                this.insertText(Character.toString(p_94122_));
            }

            return true;
        } else {
            return false;
        }
    }

    @Override
    public void onClick(double p_279417_, double p_279437_) {
        int i = Mth.floor(p_279417_) - this.getX();
        if (this.bordered) {
            i -= 4;
        }

        String s = this.font.plainSubstrByWidth(this.value.substring(this.displayPos), this.getInnerWidth());
        this.moveCursorTo(this.font.plainSubstrByWidth(s, i).length() + this.displayPos, Screen.hasShiftDown());
    }

    @Override
    public void playDownSound(SoundManager p_279245_) {
    }

    @Override
    public void renderWidget(GuiGraphics p_283252_, int p_281594_, int p_282100_, float p_283101_) {
        if (this.isVisible()) {
            if (this.isBordered()) {
                ResourceLocation resourcelocation = SPRITES.get(this.isActive(), this.isFocused());
                p_283252_.blitSprite(RenderType::guiTextured, resourcelocation, this.getX(), this.getY(), this.getWidth(), this.getHeight());
            }

            int l1 = this.isEditable ? this.textColor : this.textColorUneditable;
            int i = this.cursorPos - this.displayPos;
            String s = this.font.plainSubstrByWidth(this.value.substring(this.displayPos), this.getInnerWidth());
            boolean flag = i >= 0 && i <= s.length();
            boolean flag1 = this.isFocused() && (Util.getMillis() - this.focusedTime) / 300L % 2L == 0L && flag;
            int j = this.bordered ? this.getX() + 4 : this.getX();
            int k = this.bordered ? this.getY() + (this.height - 8) / 2 : this.getY();
            int l = j;
            int i1 = Mth.clamp(this.highlightPos - this.displayPos, 0, s.length());
            if (!s.isEmpty()) {
                String s1 = flag ? s.substring(0, i) : s;
                l = p_283252_.drawString(this.font, this.formatter.apply(s1, this.displayPos), j, k, l1);
            }

            boolean flag2 = this.cursorPos < this.value.length() || this.value.length() >= this.getMaxLength();
            int j1 = l;
            if (!flag) {
                j1 = i > 0 ? j + this.width : j;
            } else if (flag2) {
                j1 = l - 1;
                l--;
            }

            if (!s.isEmpty() && flag && i < s.length()) {
                p_283252_.drawString(this.font, this.formatter.apply(s.substring(i), this.cursorPos), l, k, l1);
            }

            if (this.hint != null && s.isEmpty() && !this.isFocused()) {
                p_283252_.drawString(this.font, this.hint, l, k, l1);
            }

            if (!flag2 && this.suggestion != null) {
                p_283252_.drawString(this.font, this.suggestion, j1 - 1, k, -8355712);
            }

            if (flag1) {
                if (flag2) {
                    p_283252_.fill(RenderType.guiOverlay(), j1, k - 1, j1 + 1, k + 1 + 9, -3092272);
                } else {
                    p_283252_.drawString(this.font, "_", j1, k, l1);
                }
            }

            if (i1 != i) {
                int k1 = j + this.font.width(s.substring(0, i1));
                this.renderHighlight(p_283252_, j1, k - 1, k1 - 1, k + 1 + 9);
            }
        }
    }

    private void renderHighlight(GuiGraphics p_281400_, int p_265338_, int p_265693_, int p_265618_, int p_265584_) {
        if (p_265338_ < p_265618_) {
            int i = p_265338_;
            p_265338_ = p_265618_;
            p_265618_ = i;
        }

        if (p_265693_ < p_265584_) {
            int j = p_265693_;
            p_265693_ = p_265584_;
            p_265584_ = j;
        }

        if (p_265618_ > this.getX() + this.width) {
            p_265618_ = this.getX() + this.width;
        }

        if (p_265338_ > this.getX() + this.width) {
            p_265338_ = this.getX() + this.width;
        }

        p_281400_.fill(RenderType.guiTextHighlight(), p_265338_, p_265693_, p_265618_, p_265584_, -16776961);
    }

    public void setMaxLength(int p_94200_) {
        this.maxLength = p_94200_;
        if (this.value.length() > p_94200_) {
            this.value = this.value.substring(0, p_94200_);
            this.onValueChange(this.value);
        }
    }

    private int getMaxLength() {
        return this.maxLength;
    }

    public int getCursorPosition() {
        return this.cursorPos;
    }

    public boolean isBordered() {
        return this.bordered;
    }

    public void setBordered(boolean p_94183_) {
        this.bordered = p_94183_;
    }

    public void setTextColor(int p_94203_) {
        this.textColor = p_94203_;
    }

    public void setTextColorUneditable(int p_94206_) {
        this.textColorUneditable = p_94206_;
    }

    @Override
    public void setFocused(boolean p_265520_) {
        if (this.canLoseFocus || p_265520_) {
            super.setFocused(p_265520_);
            if (p_265520_) {
                this.focusedTime = Util.getMillis();
            }
        }
    }

    private boolean isEditable() {
        return this.isEditable;
    }

    public void setEditable(boolean p_94187_) {
        this.isEditable = p_94187_;
    }

    public int getInnerWidth() {
        return this.isBordered() ? this.width - 8 : this.width;
    }

    public void setHighlightPos(int p_94209_) {
        this.highlightPos = Mth.clamp(p_94209_, 0, this.value.length());
        this.scrollTo(this.highlightPos);
    }

    private void scrollTo(int p_299591_) {
        if (this.font != null) {
            this.displayPos = Math.min(this.displayPos, this.value.length());
            int i = this.getInnerWidth();
            String s = this.font.plainSubstrByWidth(this.value.substring(this.displayPos), i);
            int j = s.length() + this.displayPos;
            if (p_299591_ == this.displayPos) {
                this.displayPos = this.displayPos - this.font.plainSubstrByWidth(this.value, i, true).length();
            }

            if (p_299591_ > j) {
                this.displayPos += p_299591_ - j;
            } else if (p_299591_ <= this.displayPos) {
                this.displayPos = this.displayPos - (this.displayPos - p_299591_);
            }

            this.displayPos = Mth.clamp(this.displayPos, 0, this.value.length());
        }
    }

    public void setCanLoseFocus(boolean p_94191_) {
        this.canLoseFocus = p_94191_;
    }

    public boolean isVisible() {
        return this.visible;
    }

    public void setVisible(boolean p_94195_) {
        this.visible = p_94195_;
    }

    public void setSuggestion(@Nullable String p_94168_) {
        this.suggestion = p_94168_;
    }

    public int getScreenX(int p_94212_) {
        return p_94212_ > this.value.length() ? this.getX() : this.getX() + this.font.width(this.value.substring(0, p_94212_));
    }

    @Override
    public void updateWidgetNarration(NarrationElementOutput p_259237_) {
        p_259237_.add(NarratedElementType.TITLE, this.createNarrationMessage());
    }

    public void setHint(Component p_259584_) {
        this.hint = p_259584_;
    }
}