NotEnoughItems/src/codechicken/nei/config/OptionKeyBind.java

package codechicken.nei.config;

import net.minecraft.util.EnumChatFormatting;
import org.lwjgl.input.Keyboard;

public class OptionKeyBind extends OptionButton
{
    private boolean hasFocus = false;

    public OptionKeyBind(String name) {
        super("keys." + name);
    }

    @Override
    public void onMouseClicked(int mousex, int mousey, int button) {
        hasFocus = false;
    }

    @Override
    public void keyTyped(char c, int keycode) {
        if (hasFocus) {
            setValue(keycode);
            hasFocus = false;
        }
    }

    @Override
    public boolean onClick(int button) {
        if (button == 0) {
            hasFocus = true;
            return true;
        }
        if (button == 1 && getValue() != 0) {
            setValue(0);
            return true;
        }
        return false;
    }

    public boolean conflicted() {
        if (getValue() == 0)
            return false;

        for (Option o : slot.options)
            if (o instanceof OptionKeyBind && o != this && ((OptionKeyBind) o).getValue() == getValue())
                return true;

        return false;
    }

    public void setValue(int keycode) {
        getTag().setIntValue(keycode);
    }

    public int getValue() {
        return renderTag().getIntValue();
    }

    @Override
    public String getPrefix() {
        return translateN(name);
    }

    @Override
    public String getButtonText() {
        if (hasFocus)
            return EnumChatFormatting.WHITE + "> " + EnumChatFormatting.YELLOW + "??? " + EnumChatFormatting.WHITE + "<";

        if (conflicted())
            return EnumChatFormatting.RED + Keyboard.getKeyName(getValue());

        return Keyboard.getKeyName(getValue());
    }

    @Override
    public int getTextColour(int mousex, int mousey) {
        return -1;
    }
}