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/*
 * Copyright 2016-2017 Axioma srl.
 * 
 * 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.
 */
package com.holonplatform.vaadin7.data.container;

import com.holonplatform.core.query.QueryConfigurationProvider;
import com.holonplatform.core.query.QueryFilter;
import com.holonplatform.core.query.QuerySort;
import com.holonplatform.vaadin7.data.ItemDataProvider;
import com.holonplatform.vaadin7.data.ItemDataSource;
import com.holonplatform.vaadin7.data.ItemIdentifierProvider;
import com.holonplatform.vaadin7.data.ItemDataSource.CommitHandler;
import com.holonplatform.vaadin7.data.ItemDataSource.PropertySortGenerator;
import com.vaadin.data.Buffered;
import com.vaadin.data.Container;
import com.vaadin.data.Container.ItemSetChangeListener;
import com.vaadin.data.Item;

/**
 * Builder to create {@link ItemDataSourceContainer} instances.
 * 
 * @param  Item property type
 * @param  Item type
 * 
 * @since 5.0.0
 */
public interface ItemDataSourceContainerBuilder> {

	/**
	 * Set the items data provider.
	 * @param dataProvider The items data provider to set
	 * @return this
	 */
	B dataSource(ItemDataProvider dataProvider);

	/**
	 * Set the item adapter to convert data source item data type to a container {@link Item} and back.
	 * @param itemAdapter The item adapter to set
	 * @return this
	 */
	B itemAdapter(ItemAdapter itemAdapter);

	/**
	 * Set the item identifier provider to use to obtain item ids.
	 * @param  Item id type
	 * @param itemIdentifierProvider the item identifier provider to set
	 * @return this
	 */
	 B itemIdentifier(ItemIdentifierProvider itemIdentifierProvider);

	/**
	 * Add an Item property to this container
	 * @param propertyId Property id
	 * @param type Property value type
	 * @return this
	 */
	B withProperty(PROPERTY propertyId, Class type);

	/**
	 * Add an Item property to this container and declares it as sortable
	 * @param propertyId Property id
	 * @param type Property value type
	 * @return this
	 */
	B withSortableProperty(PROPERTY propertyId, Class type);

	/**
	 * Add an Item property to this container and declares it as read-only
	 * @param propertyId Property id
	 * @param type Property value type
	 * @return this
	 */
	B withReadOnlyProperty(PROPERTY propertyId, Class type);

	/**
	 * Add an Item property to this container and declares it as read-only and sortable
	 * @param propertyId Property id
	 * @param type Property value type
	 * @return this
	 */
	B withReadOnlySortableProperty(PROPERTY propertyId, Class type);

	/**
	 * Set if auto-refresh is enabled for this container, i.e. items are loaded when one of the Container method which
	 * involve operations on item set is called.
	 * 

	 * If auto-refresh is not enabled, {@link ItemDataSource#refresh()} method must be called to load items before using
	 * this Container.
	 * 

	 * @param autoRefresh true to enable auto-refresh
	 * @return this
	 */
	B autoRefresh(boolean autoRefresh);

	/**
	 * Set batch (page) size for items loading using {@link ItemDataProvider}.
	 * 

	 * A value <=0 means no paging, and {@link ItemDataProvider} should behave in a consistent manner.
	 * 

	 * @param batchSize Batch (page) size for items loading
	 * @return this
	 */
	B batchSize(int batchSize);

	/**
	 * Set max items cache size
	 * @param maxCacheSize Max cache size to set
	 * @return this
	 */
	B maxCacheSize(int maxCacheSize);

	/**
	 * Set whether given property id is sortable.
	 * @param propertyId Property id
	 * @param sortable Whether given property id is sortable
	 * @return this
	 */
	B sortable(PROPERTY propertyId, boolean sortable);

	/**
	 * Set whether given property id is read-only.
	 * @param propertyId Property id
	 * @param readOnly Whether given property id is read-only
	 * @return this
	 */
	B readOnly(PROPERTY propertyId, boolean readOnly);

	/**
	 * Set a default value to initialize the given propertyId
	 * @param propertyId Property id
	 * @param defaultValue Default value
	 * @return this
	 */
	B defaultValue(PROPERTY propertyId, Object defaultValue);

	/**
	 * Sets the buffered mode to the specified status.
	 * 

	 * When in buffered mode, an internal buffer will be used to store changes using {@link CommitHandler} until
	 * {@link ItemDataSource#commit()} is called. Calling {@link ItemDataSource#discard()} will revert the internal
	 * buffer to the value of the data source.
	 * 

	 * 

	 * When in non-buffered mode, write operations will be done directly on the data source using {@link CommitHandler}.
	 * In this mode the {@link ItemDataSource#commit()} and {@link ItemDataSource#discard()} methods serve no purpose.
	 * 

	 * @param buffered true if buffered mode should be turned on, false otherwise
	 * @return this
	 */
	B buffered(boolean buffered);

	/**
	 * Set a {@link PropertySortGenerator} to generate {@link QuerySort}s for given property
	 * @param property Property (not null)
	 * @param propertySortGenerator PropertySortGenerator (not null)
	 * @return this
	 */
	B withPropertySortGenerator(PROPERTY property, PropertySortGenerator propertySortGenerator);

	/**
	 * Add an external {@link QueryConfigurationProvider} for additional query configuration
	 * @param queryConfigurationProvider QueryConfigurationProvider to add
	 * @return this
	 */
	B withQueryConfigurationProvider(QueryConfigurationProvider queryConfigurationProvider);

	/**
	 * Set query fixed filter (always added to query predicates)
	 * @param filter Query fixed filter, or null for none
	 * @return this
	 */
	B fixedFilter(QueryFilter filter);

	/**
	 * Set query fixed sort (always added to query sorts)
	 * @param sort Query fixed sort, or null for none
	 * @return this
	 */
	B fixedSort(QuerySort sort);

	/**
	 * Set query default sort. If not null and no other sort is available, this one will be used
	 * @param sort Default query sort
	 * @return this
	 */
	B defaultSort(QuerySort sort);

	/**
	 * Add a query parameter
	 * @param name Parameter name
	 * @param value Parameter value
	 * @return this
	 */
	B queryParameter(String name, Object value);

	/**
	 * Set the handler to manage item set modifications.
	 * 

	 * This is required to activate item set modification support, using methods such as {@link Container#addItem()},
	 * {@link Container#removeItem(Object)} and {@link Buffered#commit()}.
	 * 

	 * @param commitHandler Item commit handler
	 * @return this
	 */
	B commitHandler(CommitHandler commitHandler);

	/**
	 * Add an {@link ItemSetChangeListener}
	 * @param listener Listener to add
	 * @return this
	 */
	B withItemSetChangeListener(ItemSetChangeListener listener);

	/**
	 * Build {@link ItemDataSourceContainer} instance
	 * @return ItemDataSourceContainer instance
	 */
	ItemDataSourceContainer build();

	/**
	 * Default {@link ItemDataSourceContainerBuilder}.
	 * @param  Item type
	 * @param  Item property type
	 */
	public interface BaseItemDataSourceContainerBuilder
			extends ItemDataSourceContainerBuilder> {

	}

}




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