/*
    * 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.common.gridfactory.impl;
  
  import org.springframework.stereotype.Service;
  import org.vaadin.gridutil.cell.GridCellFilter;
  
  import com.hack23.cia.web.impl.ui.application.views.common.converters.ListPropertyConverter;
  import com.hack23.cia.web.impl.ui.application.views.common.gridfactory.api.GridFactory;
  import com.hack23.cia.web.impl.ui.application.views.common.sizing.ContentRatio;
  import com.hack23.cia.web.impl.ui.application.views.pageclicklistener.AbstractPageItemRendererClickListener;
  import com.vaadin.data.Container;
  import com.vaadin.data.Container.Indexed;
  import com.vaadin.data.util.BeanItemContainer;
  import com.vaadin.event.SelectionEvent.SelectionListener;
  import com.vaadin.ui.AbstractOrderedLayout;
  import com.vaadin.ui.Grid;
  import com.vaadin.ui.Grid.Column;
  import com.vaadin.ui.Grid.SelectionMode;
  
  /**
   * The Class GridFactoryImpl.
   */
  @Service
  public final class GridFactoryImpl implements GridFactory {
  
  	/**
  	 * Instantiates a new grid factory impl.
  	 */
  	public GridFactoryImpl() {
  		super();
  	}
  
  	@Override
  	public void createBasicBeanItemGrid(final AbstractOrderedLayout panelContent, final Container.Indexed datasource,
  			final String caption, final Object[] columnOrder, final Object[] hideColumns,
  			final AbstractPageItemRendererClickListener<?> listener, final String actionId, final ListPropertyConverter[] collectionPropertyConverters) {
  		createBasicBeanItemNestedPropertiesGrid(panelContent,datasource, caption, null, columnOrder, hideColumns, listener, actionId, collectionPropertyConverters);
  
  
  	}
  
  	@Override
  	public void createBasicBeanItemNestedPropertiesGrid(final AbstractOrderedLayout panelContent,final Indexed datasource, final String caption, final String[] nestedProperties,
  			final Object[] columnOrder, final Object[] hideColumns, final AbstractPageItemRendererClickListener<?> listener,
  			final String actionId, final ListPropertyConverter[] collectionPropertyConverters) {
  		final Grid grid = new Grid(datasource);
  
  		grid.setCaption(caption);
  		grid.setSelectionMode(SelectionMode.SINGLE);
  
  		createNestedProperties(datasource, nestedProperties);
  
  		configureColumnOrdersAndHiddenFields(columnOrder, hideColumns, grid);
  
  		configureListeners(listener, grid);
  
  		setColumnConverters(collectionPropertyConverters, grid);
  
  		grid.setSizeFull();
  
  		grid.setStyleName("Level2Header");
  
  		grid.setImmediate(true);
  		grid.setReadOnly(true);
  
  		createGridCellFilter(columnOrder, grid);
  
  		panelContent.addComponent(grid);
  		panelContent.setExpandRatio(grid, ContentRatio.GRID);
  	}
  
  	/**
  	 * Configure column orders and hidden fields.
  	 *
  	 * @param columnOrder
  	 *            the column order
  	 * @param hideColumns
  	 *            the hide columns
  	 * @param grid
  	 *            the grid
  	 */
  	private static void configureColumnOrdersAndHiddenFields(final Object[] columnOrder, final Object[] hideColumns,
 			final Grid grid) {
 		if (columnOrder != null) {
 			grid.setColumnOrder(columnOrder);
 		}
 
 		if (hideColumns != null) {
 			for (final Object o : hideColumns) {
 				grid.removeColumn(o);
 			}
 		}
 	}
 
 	/**
 	 * Creates the nested properties.
 	 *
 	 * @param datasource
 	 *            the datasource
 	 * @param nestedProperties
 	 *            the nested properties
 	 */
 	private static void createNestedProperties(final Indexed datasource, final String[] nestedProperties) {
 		if (nestedProperties != null) {
 			for (final String nestedProperty : nestedProperties) {
 				final BeanItemContainer<?> dataContainer = (BeanItemContainer<?>) datasource;
 				dataContainer.addNestedContainerProperty(nestedProperty);
 			}
 		}
 	}
 
 	/**
 	 * Configure listeners.
 	 *
 	 * @param listener
 	 *            the listener
 	 * @param grid
 	 *            the grid
 	 */
 	private static void configureListeners(final SelectionListener listener,
 			final Grid grid) {
 
 		if (listener != null) {
 			grid.addSelectionListener(listener);
 		}
 	}
 
 
 	/**
 	 * Creates the grid cell filter.
 	 *
 	 * @param columnOrder
 	 *            the column order
 	 * @param grid
 	 *            the grid
 	 */
 	private static void createGridCellFilter(final Object[] columnOrder, final Grid grid) {
 		if (columnOrder != null) {
 			final GridCellFilter gridCellFilter = new GridCellFilter(grid);
 
 			for (final Object column : columnOrder) {
 				if (grid.getColumn(column) != null) {
 					gridCellFilter.setTextFilter(column.toString(), true, true);
 				}
 			}
 
 		}
 	}
 
 
 	/**
 	 * Sets the column converters.
 	 *
 	 * @param collectionPropertyConverter
 	 *            the collection property converter
 	 * @param grid
 	 *            the grid
 	 */
 	private static void setColumnConverters(final ListPropertyConverter[] collectionPropertyConverter, final Grid grid) {
 		if (collectionPropertyConverter != null) {
 			for (final ListPropertyConverter converter : collectionPropertyConverter) {
 				final Column column = grid.getColumn(converter.getColumn());
 				column.setConverter(converter);
 			}
 		}
 	}
 
 
 }