CellEditEvent.java

/*
 * Copyright 2009-2014 PrimeTek.
 *
 * 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 org.primefaces.event;

import java.util.ArrayList;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.component.UIPanel;
import javax.faces.component.ValueHolder;
import javax.faces.component.behavior.Behavior;
import javax.faces.event.AjaxBehaviorEvent;
import javax.faces.event.AjaxBehaviorListener;
import javax.faces.event.FacesListener;
import org.primefaces.component.api.UIColumn;
import org.primefaces.component.celleditor.CellEditor;
import org.primefaces.component.datatable.DataTable;

public class CellEditEvent extends AjaxBehaviorEvent {

    private Object oldValue;
    
    private Object newValue;
    
    private int rowIndex;
    
    private UIColumn column;

    public CellEditEvent(UIComponent component, Behavior behavior, int rowIndex, UIColumn column) {
        super(component, behavior);
        this.rowIndex = rowIndex;
        this.column = column;
        this.oldValue = resolveValue();
    }

	@Override
	public boolean isAppropriateListener(FacesListener faceslistener) {
		return (faceslistener instanceof AjaxBehaviorListener);
	}

	@Override
	public void processListener(FacesListener faceslistener) {
		((AjaxBehaviorListener) faceslistener).processAjaxBehavior(this);
	}
    
    public Object getOldValue() {
        return this.oldValue;
    }

    public Object getNewValue() {
        if(newValue == null) {
            newValue = resolveValue();
        }
        return newValue;
    }

    public int getRowIndex() {
        return rowIndex;
    }

    public void setRowIndex(int rowIndex) {
        this.rowIndex = rowIndex;
    }

    public UIColumn getColumn() {
        return column;
    }

    public void setColumn(UIColumn column) {
        this.column = column;
    }
    
    private Object resolveValue() {
        DataTable data = (DataTable) source;
        data.setRowModel(rowIndex);
        Object value = null;
        
        for(UIComponent child : column.getChildren()) {
            if(child instanceof CellEditor) {
                UIComponent inputFacet = child.getFacet("input");
                
                //multiple
                if(inputFacet instanceof UIPanel) {
                    List<Object> values = new ArrayList<Object>();
                    for(UIComponent kid : inputFacet.getChildren()) {
                        if(kid instanceof ValueHolder) {
                            values.add(((ValueHolder) kid).getValue());
                        }
                    }
                    
                    value = values;
                } 
                //single
                else {
                    value = ((ValueHolder) inputFacet).getValue();
                }
                
            }
        }
        
        return value;
    }
}