IconColumn.java

/*
 * � Copyright IBM Corp. 2010
 * 
 * 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.ibm.xsp.extlib.component.data;

import java.util.ArrayList;
import java.util.List;

import javax.faces.context.FacesContext;

import com.ibm.xsp.extlib.component.image.IconEntry;
import com.ibm.xsp.util.StateHolderUtil;


/**
 * Icon column in a {@link UIDataView}.
 * <p>
 * This column let select an image among a set of them.
 * </p>
 */
public class IconColumn extends ValueColumn {

    private List<IconEntry> icons;
	
	public IconColumn() {
	}
	
	public List<IconEntry> getIcons() {
		return icons;
	}
	
	public void addIcon(IconEntry icon) {
		if(icons==null) {
			icons = new ArrayList<IconEntry>();
		}
		icons.add(icon);
	}
	
	@Override
	public void restoreState(FacesContext _context, Object _state) {
		Object _values[] = (Object[]) _state;
		super.restoreState(_context, _values[0]);
        icons = StateHolderUtil.restoreList(_context, getComponent(), _values[1]);
	}

	@Override
	public Object saveState(FacesContext _context) {
		Object _values[] = new Object[2];
		_values[0] = super.saveState(_context);
        _values[1] = StateHolderUtil.saveList(_context, icons);
		return _values;
	}
}