GuiCCTextField.java

package codechicken.core.gui;

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

public class GuiCCTextField extends GuiWidget {
    private String text;
    private boolean isFocused;
    private boolean isEnabled;

    public int maxStringLength;
    public int cursorCounter;
    public String actionCommand;

    private String allowedCharacters;

    public GuiCCTextField(int x, int y, int width, int height, String text) {
        super(x, y, width, height);
        isFocused = false;
        isEnabled = true;
        this.text = text;
    }

    public GuiCCTextField setActionCommand(String s) {
        actionCommand = s;
        return this;
    }

    public void setText(String s) {
        if (s.equals(text)) {
            return;
        }

        String oldText = text;
        text = s;
        onTextChanged(oldText);
    }

    public void onTextChanged(String oldText) {
    }

    public final String getText() {
        return text;
    }

    public final boolean isEnabled() {
        return isEnabled;
    }

    public void setEnabled(boolean b) {
        isEnabled = b;
        if (!isEnabled && isFocused) {
            setFocused(false);
        }
    }

    public final boolean isFocused() {
        return isFocused;
    }

    @Override
    public void update() {
        cursorCounter++;
    }

    @Override
    public void keyTyped(char c, int keycode) {
        if (!isEnabled || !isFocused) {
            return;
        }

        /*if(c == '\t')//tab
        {
            parentGuiScreen.selectNextField();
        }*/
        if (c == '\026')//paste
        {
            String s = GuiScreen.getClipboardString();
            if (s == null || s.equals("")) {
                return;
            }

            for (int i = 0; i < s.length(); i++) {
                if (text.length() == maxStringLength) {
                    return;
                }

                char tc = s.charAt(i);
                if (canAddChar(tc)) {
                    setText(text + tc);
                }
            }
        }
        if (keycode == Keyboard.KEY_RETURN) {
            setFocused(false);
            sendAction(actionCommand, getText());
        }

        if (keycode == Keyboard.KEY_BACK && text.length() > 0) {
            setText(text.substring(0, text.length() - 1));
        }

        if ((text.length() < maxStringLength || maxStringLength == 0) && canAddChar(c)) {
            setText(text + c);
        }
    }

    public boolean canAddChar(char c) {
        return allowedCharacters == null ? ChatAllowedCharacters.isAllowedCharacter(c) : allowedCharacters.indexOf(c) >= 0;
    }

    @Override
    public void mouseClicked(int x, int y, int button) {
        if (isEnabled && pointInside(x, y)) {
            setFocused(true);
            if (button == 1) {
                setText("");
            }
        } else {
            setFocused(false);
        }
    }

    public void setFocused(boolean focus) {
        if (focus == isFocused) {
            return;
        }
        isFocused = focus;
        onFocusChanged();
    }

    public void onFocusChanged() {
        if (isFocused) {
            cursorCounter = 0;
        }
    }

    @Override
    public void draw(int i, int j, float f) {
        drawBackground();
        drawText();
    }

    public void drawBackground() {
        drawRect(x - 1, y - 1, x + width + 1, y + height + 1, 0xffa0a0a0);
        drawRect(x, y, x + width, y + height, 0xff000000);
    }

    public String getDrawText() {
        String s = getText();
        if (isEnabled && isFocused && (cursorCounter / 6) % 2 == 0) {
            s += "_";
        }
        return s;
    }

    public void drawText() {
        drawString(fontRenderer, getDrawText(), x + 4, y + height / 2 - 4, getTextColour());
    }

    public int getTextColour() {
        return isEnabled ? 0xe0e0e0 : 0x707070;
    }

    public GuiCCTextField setMaxStringLength(int i) {
        maxStringLength = i;
        return this;
    }

    public GuiCCTextField setAllowedCharacters(String s) {
        allowedCharacters = s;
        return this;
    }
}