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License Agreement. Rich Faces - Natural Ajax for Java Server Faces (JSF) Copyright (C) 2007 Exadel, Inc. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
package org.richfaces.component;
import  org.richfaces.renderkit.AjaxConstants;
import  javax.faces.component.UICommand;
import  javax.faces.component.UIComponent;
import  javax.faces.context.FacesContext;

The <a4j:commandButton> component is similar to the JavaServer Faces (JSF) <h:commandButton> component, but additionally includes Ajax support.

Nick Belaevski
@JsfComponent(renderer = @JsfRenderer(type = "org.richfaces.CommandButtonRenderer"), tag = @Tag(type = .),
        attributes = {"ajax-props.xml""command-button-props.xml""core-props.xml""accesskey-props.xml" })
public abstract class AbstractCommandButton extends AbstractActionComponent implements MetaComponentResolver, AccesskeyProps {
    public static final String COMPONENT_TYPE = "org.richfaces.CommandButton";
    public static final String COMPONENT_FAMILY = UICommand.COMPONENT_FAMILY;

Absolute or relative URL of the image to be displayed for this button. If specified, this "input" element will be of type "image". Otherwise, it will be of the type specified by the "type" property with a label specified by the "value" property
    public abstract String getImage();
    public String resolveClientId(FacesContext facesContext, UIComponent contextComponentString metaComponentId) {
        return null;
    public String substituteUnresolvedClientId(FacesContext facesContext, UIComponent contextComponentString metaComponentId) {
        if (AjaxContainer.META_COMPONENT_ID.equals(metaComponentId)) {
            return AjaxConstants.FORM;
        return null;
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