br.com.jarch.faces.ui.ButtonUI Maven / Gradle / Ivy

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package br.com.jarch.faces.ui;

import br.com.jarch.core.exception.ValidationException;
import br.com.jarch.faces.util.JsfUtils;

import javax.el.MethodExpression;
import javax.faces.component.FacesComponent;
import javax.faces.component.UINamingContainer;
import javax.faces.context.FacesContext;

@FacesComponent("br.com.jarch.faces.ui.ButtonUI")
public class ButtonUI extends UINamingContainer {

    public String methodAction() {
        MethodExpression me = (MethodExpression) this.getAttributes().get("action");

        if (me != null) {
            try {
                Object result = me.invoke(FacesContext.getCurrentInstance().getELContext(), null);
                if (result instanceof String) {
                    return (String) result;
                }
            } catch (Exception ex) {
                ex.printStackTrace();

                if (ValidationException.class.isAssignableFrom(ex.getClass())
                    || (ex.getCause() != null && ValidationException.class.isAssignableFrom(ex.getCause().getClass()))) {
                    throw ex;
                }

                Object result = JsfUtils.resolveExpressionLanguage(me.getExpressionString());
                if (result instanceof String) {
                    return (String) result;
                }
            }
        }

        return null;
    }

    public void methodActionListener() {
        MethodExpression me = (MethodExpression) this.getAttributes().get("actionListener");
        if (me != null) {
            me.invoke(FacesContext.getCurrentInstance().getELContext(), null);
        }
    }

    public void methodListener() {
        MethodExpression me = (MethodExpression) this.getAttributes().get("listener");
        if (me != null) {
            me.invoke(FacesContext.getCurrentInstance().getELContext(), null);
        }
    }
}