TextInput.java

package com.lucasdnd.ags.ui;

import java.awt.Toolkit;
import java.awt.event.KeyEvent;

import org.newdawn.slick.Color;
import org.newdawn.slick.GameContainer;
import org.newdawn.slick.Graphics;
import org.newdawn.slick.Input;
import org.newdawn.slick.SlickException;
import org.newdawn.slick.state.StateBasedGame;

import com.lucasdnd.ags.system.ResourceLoader;

public class TextInput extends TextButton {
	
	boolean hasFocus;
	boolean isShiftDown;
	String label;
	String text;
	int maxTextLength;
	float rectangleMarginX = 140f;
	float rectangleMarginY = -7f;
	float innerTextPaddingX = 4f;
	
	String cursor = "";
	int cursorBlinkTime = 500;
	int currentCursorBlinkTime = 0;

	public TextInput(String label, int maxTextLength, float xPos, float yPos, float width, float height) throws SlickException {
		super(label, xPos, yPos, width, height);
		this.maxTextLength = maxTextLength;
		this.width = width;
		this.height = height;
		this.label = label;
		
		text = "";
		isShiftDown = false;
	}
	
	public void update(GameContainer container, StateBasedGame game, int delta, boolean leftMouseClicked,
			boolean leftMouseDown, int mouseX, int mouseY, Input input) throws SlickException {
		
		if (isEnabled) {
			
			super.update(container, game, delta, leftMouseClicked, leftMouseDown, mouseX, mouseY);
			
			// Cursor blink
			currentCursorBlinkTime += delta;
			if (currentCursorBlinkTime >= cursorBlinkTime) {
				currentCursorBlinkTime = 0;
				if (cursor.compareTo("|") == 0) {
					cursor = "";
				} else {
					cursor = "|";
				}
			}
			
			// Get keys input
			String letter = "";
			if (input.isKeyPressed(Input.KEY_A)) {
				letter = "a";
			} else if (input.isKeyPressed(Input.KEY_B)) {
				letter = "b";
			} else if (input.isKeyPressed(Input.KEY_C)) {
				letter = "c";
			} else if (input.isKeyPressed(Input.KEY_D)) {
				letter = "d";
			} else if (input.isKeyPressed(Input.KEY_E)) {
				letter = "e";
			} else if (input.isKeyPressed(Input.KEY_F)) {
				letter = "f";
			} else if (input.isKeyPressed(Input.KEY_G)) {
				letter = "g";
			} else if (input.isKeyPressed(Input.KEY_H)) {
				letter = "h";
			} else if (input.isKeyPressed(Input.KEY_I)) {
				letter = "i";
			} else if (input.isKeyPressed(Input.KEY_J)) {
				letter = "j";
			} else if (input.isKeyPressed(Input.KEY_K)) {
				letter = "k";
			} else if (input.isKeyPressed(Input.KEY_L)) {
				letter = "l";
			} else if (input.isKeyPressed(Input.KEY_M)) {
				letter = "m";
			} else if (input.isKeyPressed(Input.KEY_N)) {
				letter = "n";
			} else if (input.isKeyPressed(Input.KEY_O)) {
				letter = "o";
			} else if (input.isKeyPressed(Input.KEY_P)) {
				letter = "p";
			} else if (input.isKeyPressed(Input.KEY_Q)) {
				letter = "q";
			} else if (input.isKeyPressed(Input.KEY_R)) {
				letter = "r";
			} else if (input.isKeyPressed(Input.KEY_S)) {
				letter = "s";
			} else if (input.isKeyPressed(Input.KEY_T)) {
				letter = "t";
			} else if (input.isKeyPressed(Input.KEY_U)) {
				letter = "u";
			} else if (input.isKeyPressed(Input.KEY_V)) {
				letter = "v";
			} else if (input.isKeyPressed(Input.KEY_W)) {
				letter = "w";
			} else if (input.isKeyPressed(Input.KEY_X)) {
				letter = "x";
			} else if (input.isKeyPressed(Input.KEY_Y)) {
				letter = "y";
			} else if (input.isKeyPressed(Input.KEY_Z)) {
				letter = "z";
			} else if (input.isKeyPressed(Input.KEY_0)) {
				letter = "0";
			} else if (input.isKeyPressed(Input.KEY_1)) {
				letter = "1";
			} else if (input.isKeyPressed(Input.KEY_2)) {
				letter = "2";
			} else if (input.isKeyPressed(Input.KEY_3)) {
				letter = "3";
			} else if (input.isKeyPressed(Input.KEY_4)) {
				letter = "4";
			} else if (input.isKeyPressed(Input.KEY_5)) {
				letter = "5";
			} else if (input.isKeyPressed(Input.KEY_6)) {
				letter = "6";
			} else if (input.isKeyPressed(Input.KEY_7)) {
				letter = "7";
			} else if (input.isKeyPressed(Input.KEY_8)) {
				letter = "8";
			} else if (input.isKeyPressed(Input.KEY_9)) {
				letter = "9";
			} else if (input.isKeyPressed(Input.KEY_SPACE)) {
				letter = " ";
			} else if (input.isKeyPressed(Input.KEY_BACK)) {
				cursor = "|";
				currentCursorBlinkTime = 0;
				if (text.length() > 0) {
					text = text.substring(0, text.length() - 1);
				}
			}
			
			// Append the letter to the String
			if (letter.compareTo("") != 0 && text.length() < maxTextLength) {
				cursor = "|";
				currentCursorBlinkTime = 0;
				boolean isCapsOn = Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK);
				if (input.isKeyDown(Input.KEY_LSHIFT) || isCapsOn) {
					letter = letter.toUpperCase();
				}
				text += letter;
			}
		}
	}
	
	@Override
	public void render(GameContainer container, StateBasedGame game, Graphics g) throws SlickException {
		
		if (visible) {
			
			g.setLineWidth(2f);
			g.setColor(Color.black);
			
			// Draw label
			ResourceLoader.getInstance().tinyLightGrayFont.drawString(xPos + 1f, yPos + 1f, label);
			ResourceLoader.getInstance().tinyBlackFont.drawString(xPos, yPos, label);
			
			g.drawRoundRect(xPos + rectangleMarginX, yPos + rectangleMarginY, width, height, 2);
			
			// Draw inner text
			ResourceLoader.getInstance().tinyLightGrayFont.drawString(xPos + rectangleMarginX + innerTextPaddingX + 1f, yPos + 1f, text + cursor);
			ResourceLoader.getInstance().tinyBlackFont.drawString(xPos + rectangleMarginX + innerTextPaddingX, yPos, text + cursor);
		}
	}

	public boolean isHasFocus() {
		return hasFocus;
	}

	public void setHasFocus(boolean hasFocus) {
		this.hasFocus = hasFocus;
	}

	public String getLabel() {
		return label;
	}

	public void setLabel(String label) {
		this.label = label;
	}

	public String getText() {
		return text;
	}

	public void setText(String text) {
		this.text = text;
	}
}