GuiMSTextField.java

package com.minestellar.core.gui.widget;

import net.minecraft.client.gui.GuiScreen;
import net.minecraft.util.ChatAllowedCharacters;

import org.lwjgl.input.Keyboard;

public class GuiMSTextField extends GuiWidget {

	private String text;
	private boolean isFocused;
	private boolean isEnabled;

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

	private char[] allowedcharacters;

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

	public GuiMSTextField 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') {
			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) {
		for (int i = 0; i < allowedcharacters.length; i++) {
			if (allowedcharacters[i] == c) {
				return true;
			} else {
				continue;
			}
		}

		return false;
	}

	@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(this.x - 1, this.y - 1, this.x + this.width + 1, this.y + this.height + 1, -6250336);
		drawRect(this.x, this.y, this.x + this.width, this.y + this.height, -16777216);
	}

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

	public GuiMSTextField setAllowedCharacters(char[] s) {
		if (s == null)
			s = ChatAllowedCharacters.allowedCharacters;
		else
			allowedcharacters = s;
		return this;
	}

}