package com.thinkingblackberry;

import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.Font;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.Keypad;


public class CustomButtonField extends Field {
	private String label;
	private int textColorUnfocused;
	private int textColorFocused;
	private int backgroundColorUnfocused;
	private int backgroundColorFocused;
	
	private int horizontalPadding = 5;
	private int verticalPadding = 5;
	

	public CustomButtonField(String label, int textColorUnfocused,
			int textColorFocused, int backgroundColorUnfocused,
			int backgroundColorFocused, long style) {
		super(style);
		this.label = label;
		this.textColorUnfocused = textColorUnfocused;
		this.textColorFocused = textColorFocused;
		this.backgroundColorUnfocused = backgroundColorUnfocused;
		this.backgroundColorFocused = backgroundColorFocused;
	}

	protected void layout(int maxWidth, int maxHeight) {
		Font font = getFont();
		int width = font.getAdvance(label) + (horizontalPadding * 2);
		int height = font.getHeight() + (verticalPadding * 2);
		// Respect the maximum width and height available from our manager
		setExtent(Math.min(width, maxWidth), Math.min(height, maxHeight));
	}

	protected void paint(Graphics graphics) {
		// Draw background
		graphics.setColor(isFocus() ? backgroundColorFocused : backgroundColorUnfocused);
		graphics.fillRoundRect(0, 0, getWidth(), getHeight(), 10, 10);
		
		// Draw text
		graphics.setColor(isFocus() ? textColorFocused : textColorUnfocused);
		graphics.drawRoundRect(0, 0, getWidth(), getHeight(), 10, 10);
		int fontWidth = getFont().getAdvance(label);
		graphics.drawText(label, (getWidth()-fontWidth)/2, verticalPadding);
	}

	
	protected void drawFocus(Graphics graphics, boolean on) {
		// Don't draw the default focus
	}

	protected void onFocus(int direction) {
		super.onFocus(direction);
		invalidate();
	}

	protected void onUnfocus() {
		super.onUnfocus();
		invalidate();
	}

	public boolean isFocusable() {
		return true;
	}

	protected boolean navigationClick(int status, int time) {
		fieldChangeNotify(0);
		return true;
	}

	protected boolean keyChar(char character, int status, int time) {
		if (character == Keypad.KEY_ENTER) {
			fieldChangeNotify(0);
			return true;
		}
		return super.keyChar(character, status, time);
	}

	public String getLabel() {
		return label;
	}
}