Window.java

package net.alcuria.umbracraft.engine.windows;

import net.alcuria.umbracraft.Game;
import net.alcuria.umbracraft.engine.audio.Audio.CommonSound;
import net.alcuria.umbracraft.listeners.Listener;
import net.alcuria.umbracraft.listeners.TypeListener;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.InputMultiplexer;
import com.badlogic.gdx.InputProcessor;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;

/** An abstract window.
 * @author Andrew Keturi
 * @param <T> the layout for the window */
public abstract class Window<T extends WindowLayout> implements TypeListener<InputCode> {
	private InputProcessor lastInputProcessor;
	public final T layout;

	public Window(T layout) {
		this.layout = layout;
	}

	/** Called to close the window */
	protected void close() {
		if (layout.close != null) {
			layout.close.setDisabled(true);
		}
		layout.hide(new Listener() {
			@Override
			public void invoke() {
				Gdx.input.setInputProcessor(lastInputProcessor);
				Game.windows().pop(Window.this);
			}
		});
	}

	/** called to dispose any resources */
	public void dispose() {

	}

	@Override
	public void invoke(InputCode type) {
		onKeyPressed(type);
	}

	/** @return whether or not this window is touchable. default is
	 *         <code>true</code>. */
	public boolean isTouchable() {
		return true;
	}

	/** callback after the window has closed */
	public abstract void onClose();

	/** callback after a key is pressed */
	public abstract void onKeyPressed(InputCode key);

	/** callback after the window has opened */
	public abstract void onOpen();

	void open() {
		layout.show();
		layout.setTypeListener(this);
		lastInputProcessor = Gdx.input.getInputProcessor();
		Gdx.input.setInputProcessor(new InputMultiplexer(layout.getStage(), layout));
		onOpen();
		if (layout.close != null) {
			layout.close.addListener(new ClickListener() {
				@Override
				public void clicked(InputEvent event, float x, float y) {
					if (!layout.close.isDisabled()) {
						Game.audio().sound(CommonSound.CLOSE);
						close();
					}
				}
			});
		}
	}

	/** called to draw the layout */
	public void render() {
		layout.render();
	}

	/** called to update the layout */
	public void update() {
		layout.update();
	}
}