/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.cocoon.portal.layout.impl;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.cocoon.portal.layout.AbstractLayout;
import org.apache.cocoon.portal.layout.CompositeLayout;
import org.apache.cocoon.portal.layout.Item;
import org.apache.cocoon.portal.layout.Layout;
import org.apache.cocoon.util.ClassUtils;
/**
* A composite layout is a layout that contains other layouts.
*
* @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a>
* @author <a href="mailto:volker.schmitt@basf-it-services.com">Volker Schmitt</a>
*
* @version CVS $Id: CompositeLayoutImpl.java 603313 2007-12-11 17:30:12Z cziegeler $
*/
public class CompositeLayoutImpl
extends AbstractLayout
implements CompositeLayout {
protected List items = new ArrayList(3);
/** The class name of the items */
protected String itemClassName;
/**
* Constructor
*/
public CompositeLayoutImpl() {
// nothing to do
}
/**
* Add indexed item to the itemList.
* @param index index for the position inside the list
* @param item item to add
*/
public final void addItem(int index, Item item) {
this.items.add(index, item);
item.setParent(this);
}
/**
* Add Item to the ItemList.
* @param item item to add
*/
public final void addItem(Item item) {
this.items.add(item);
item.setParent(this);
}
/**
* Get Item from the ItemList.
* @return Item
*/
public final Item getItem(int index) {
return (Item) this.items.get(index);
}
/**
* Get the ItemList.
* @return items
*/
public final List getItems() {
return this.items;
}
/**
* Get size of ItemList.
* @return size
*/
public final int getSize() {
return this.items.size();
}
public final void removeItem(Item item) {
this.items.remove(item);
item.setParent(null);
}
/* (non-Javadoc)
* @see org.apache.cocoon.portal.layout.CompositeLayout#createNewItem()
*/
public Item createNewItem() {
if ( this.itemClassName == null ) {
return new Item();
}
try {
return (Item)ClassUtils.newInstance(this.itemClassName);
} catch (Exception ignore) {
return new Item();
}
}
/**
* @return Returns the item class name.
*/
public String getItemClassName() {
return this.itemClassName;
}
/**
* @param value The item class name to set.
*/
public void setItemClassName(String value) {
this.itemClassName = value;
}
/* (non-Javadoc)
* @see java.lang.Object#clone()
*/
protected Object clone() throws CloneNotSupportedException {
CompositeLayoutImpl clone = (CompositeLayoutImpl)super.clone();
// we are not cloning the items
clone.items = new ArrayList();
return clone;
}
/* (non-Javadoc)
* @see org.apache.cocoon.portal.layout.Layout#copy(java.util.Map)
*/
public Layout copy() {
CompositeLayoutImpl clone = (CompositeLayoutImpl)super.copy();
final Iterator i = this.items.iterator();
while ( i.hasNext() ) {
final Item current = (Item)i.next();
final Item clonedItem = current.copy(clone);
clone.addItem(clonedItem);
}
return clone;
}
}