SaveLoadButton.java

package codechicken.nei;

import net.minecraft.client.gui.GuiScreen;
import net.minecraft.util.ChatAllowedCharacters;
import org.lwjgl.input.Keyboard;

import static codechicken.lib.gui.GuiDraw.drawString;
import static codechicken.lib.gui.GuiDraw.getStringWidth;
import static codechicken.nei.NEIClientUtils.translate;

public abstract class SaveLoadButton extends Button {
    public SaveLoadButton(String s) {
        super(s);
    }

    @Override
    public boolean handleClick(int mousex, int mousey, int button) {
        if (button == 1) {
            label = "";
            onTextChange();
            focused = true;
            NEIClientUtils.playClickSound();
            return true;
        }
        return super.handleClick(mousex, mousey, button);
    }

    public abstract void onTextChange();

    @Override
    public void onGuiClick(int i, int j) {
        if (!contains(i, j)) {
            focused = false;
        }
    }

    @Override
    public boolean handleKeyPress(int keyID, char keyChar) {
        if (!focused) {
            return false;
        }

        if (keyID == Keyboard.KEY_BACK) {
            if (label.length() > 0) {
                label = label.substring(0, label.length() - 1);
                onTextChange();
                backdowntime = System.currentTimeMillis();
            }
        } else if (keyID == Keyboard.KEY_RETURN) {
            focused = false;
        } else if (keyChar == 22)//paste
        {
            String pastestring = GuiScreen.getClipboardString();
            if (pastestring == null) {
                pastestring = "";
            }

            label = label + pastestring;
            onTextChange();
        } else if (ChatAllowedCharacters.isAllowedCharacter(keyChar)) {
            label = label + keyChar;
            onTextChange();
        }
        return true;
    }

    @Override
    public void update() {
        cursorCounter++;
        if (backdowntime > 0) {
            if (Keyboard.isKeyDown(Keyboard.KEY_BACK) && label.length() > 5) {
                if (System.currentTimeMillis() - backdowntime > 200 / (1 + backs * 0.3F)) {
                    label = label.substring(0, label.length() - 1);
                    onTextChange();
                    backdowntime = System.currentTimeMillis();
                    backs++;
                }
            } else {
                backdowntime = 0;
                backs = 0;
            }
        }
    }

    @Override
    public void draw(int mousex, int mousey) {
        super.draw(mousex, mousey);
        if (focused && (cursorCounter / 6) % 2 == 0) {
            drawString("_", x + (w + getStringWidth(getRenderLabel())) / 2, y + (h - 8) / 2, 0xFFFFFFFF);
        }
    }

    @Override
    public String getRenderLabel() {
        return translate(saved ? "load" : "save") + " " + label;
    }

    public boolean saved;
    public long backdowntime;
    public int backs;
    public int cursorCounter;
    public boolean focused;
}