Button.java

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package ajaxrequest;

import java.io.IOException;
import java.util.List;

import javax.faces.component.UICommand;
import javax.faces.context.FacesContext;


/**
 * <p><strong>Button</strong> is a {@link UIComponent} that manages the
 * layout of its child components.</p>
 */

public class Button extends UICommand {
    
    public static final String COMPONENT_TYPE = "ajaxrequest.Button";
    
    // ------------------------------------------------------------ Constructors
    
    /**
     * <p>Create a new {@link Button} instance with default property
     * values.</p>
     */
    public Button() {
        setRendererType("javax.faces.Button");
    }
    
    public void decode(FacesContext context) {
        super.decode(context);
        getAttributes().put("styleClass", "execute");
    }
    
    public void encodeBegin(FacesContext context) throws IOException {
        String style = (String)getAttributes().get("styleClass");
        if (style == null) {
            getAttributes().put("styleClass", "initial-render");
        } else {
            if (style.equals("execute")) {
                getAttributes().put("styleClass", "execute-render");
            } else if (style.equals("execute-norender")) {
                getAttributes().put("styleClass", "execute-norender");
            } else {
                getAttributes().put("styleClass", "render");
            }
        }
        super.encodeBegin(context);
    }
}