/*
    * Copyright 2014 James Pether Sörling
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *   http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   *	$Id$
   *  $HeadURL$
  */
  package com.hack23.cia.web.impl.ui.application.views.pageclicklistener;
  
  import java.util.Set;
  
  import com.vaadin.event.SelectionEvent;
  import com.vaadin.event.SelectionEvent.SelectionListener;
  import com.vaadin.ui.UI;
  import com.vaadin.ui.renderers.ClickableRenderer.RendererClickEvent;
  import com.vaadin.ui.renderers.ClickableRenderer.RendererClickListener;
  
  /**
   * The class AbstractPageItemRendererClickListener.
   *
   * @param <T>
   *            the generic type
   */
  public abstract class AbstractPageItemRendererClickListener<T> implements RendererClickListener ,SelectionListener{
  
  	/** The Constant PAGE_SEPARATOR. */
  	private static final Character PAGE_SEPARATOR = '/';
  
  	/** The Constant serialVersionUID. */
  	private static final long serialVersionUID = 1L;
  
  	/** The page. */
  	private final String page;
  
  	/**
  	 * Instantiates a new abstract page item renderer click listener.
  	 *
  	 * @param page
  	 *            the page
  	 */
  	public AbstractPageItemRendererClickListener(final String page) {
  		this.page = page;
  	}
  
  	@Override
  	public final void click(final RendererClickEvent event) {
  		UI.getCurrent().getNavigator().navigateTo(page + PAGE_SEPARATOR + getPageId((T)event.getItemId()));
  	}
  
  
  	@Override
  	public final void select(final SelectionEvent event) {
  		final Set<T> added =(Set<T>) event.getAdded();
  
  		if (!added.isEmpty()) {
  			UI.getCurrent().getNavigator().navigateTo(page + PAGE_SEPARATOR + getPageId(added.iterator().next()));
  
  		}
  
  	}
  
  	/**
  	 * Gets the page id.
  	 *
  	 * @param t
  	 *            the t
  	 * @return the page id
  	 */
  	protected abstract String getPageId(T t);
  
  }