WizardPage.java

package org.xbmc.android.remote.presentation.wizard;

import java.util.ArrayList;

import org.xbmc.android.remote.presentation.wizard.listener.PageCanFinishListener;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ScrollView;

public abstract class WizardPage<T> extends ScrollView {

	private ArrayList<PageCanFinishListener> listeners = new ArrayList<PageCanFinishListener>();
	private boolean canFinish = false;
	protected T input = null;
	protected Wizard<T> wizard;
	
	public WizardPage(Context context, AttributeSet attrs, int defStyle, Wizard<T> wizard) {
		super(context, attrs, defStyle);
		this.wizard = wizard;
	}

	public WizardPage(Context context, AttributeSet attrs, Wizard<T> wizard) {
		super(context, attrs);
		this.wizard = wizard;
	}

	public WizardPage(Context context, Wizard<T> wizard) {
		super(context);
		this.wizard = wizard;
	}
	
	public void init() {
		inflate(getContext(), getLayoutId(), this);
		onInit();
	}
	
	public OnClickListener getNextClickListener() {
		return new OnClickListener() {
			public void onClick(View v) {
				showNextPage();
			}
		};
	}
	
	protected void showNextPage() {
		wizard.showNextPage();
	}
	
	public abstract WizardPage<T> getNextPage() ;
	
	public abstract int getLayoutId();
	
	protected abstract void onInit();
	
	protected void showBusyMessage(String msg) {
		wizard.showBusyMessage(msg);
	}
	
	protected void removeBusyMessage() {
		wizard.removeBusyMessage();
	}
	
	public void setInput(T input) {
		this.input = input;
	}
	
	public T getInput() {
		return input;
	}
	
	public boolean canFinish() {
		return canFinish;
	}
	
	protected void setCanFinish(boolean canFinish) {
		this.canFinish = canFinish;
		notifyCanFinishListeners();
	}
	
	private void notifyCanFinishListeners() {
		for(PageCanFinishListener listener : listeners) {
			listener.canFinish(canFinish);
		}
	}
	
	public void addCanFinishListener(PageCanFinishListener listener) {
		listeners.add(listener);
	}
	
	public void removeCanFinishListener(PageCanFinishListener listener) {
		listeners.remove(listener);
	}
	
	public void show() {
		Animation animation = AnimationUtils.makeInAnimation(getContext(), false);
		this.setAnimation(animation);
		setVisibility(View.VISIBLE);
	}

	public void hide() {
		Animation animation = AnimationUtils.makeOutAnimation(getContext(), false);
		this.setAnimation(animation);
		this.setVisibility(View.GONE);
	}

}