tobago-example/tobago-example-demo/src/main/webapp/content/40-test/9000-attribute/Attribute.xhtml

<?xml version="1.0" encoding="UTF-8"?>
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<f:view
    xmlns:tc="http://myfaces.apache.org/tobago/component"
    xmlns:f="http://xmlns.jcp.org/jsf/core"
    xmlns:c="http://xmlns.jcp.org/jsp/jstl/core">

  <tc:page>
    <tc:gridLayout columns="250px 1fr">

      <tc:label value="condition"/>
      <tc:gridLayout columns="1fr 1fr">
        <tc:selectBooleanCheckbox value="#{attributeController.condition}"/>
        <tc:button label="update" action="#{attributeController.update}"/>
      </tc:gridLayout>

      <tc:label value="simple output"/>
      <tc:in readonly="true">
        <tc:attribute name="value" value="Some Value from the tc:attribute"/>
      </tc:in>

      <tc:label value="output over EL"/>
      <tc:in readonly="true">
        <tc:attribute name="value" value="#{attributeController.counter}"/>
      </tc:in>

      <tc:label value="action"/>
      <tc:button label="Click">
        <tc:attribute name="action" value="#{attributeController.reload}"/>
      </tc:button>

      <tc:label value="conditional action (#{attributeController.condition})"/>
      <tc:button label="Click">
        <c:if test="${attributeController.condition}">
          <tc:attribute name="action" value="#{attributeController.reload}"/>
        </c:if>
      </tc:button>

      <tc:label value="conditional action not (#{not attributeController.condition})"/>
      <tc:button label="Click">
        <c:if test="${not attributeController.condition}">
          <tc:attribute name="action" value="#{attributeController.reload}"/>
        </c:if>
      </tc:button>

      <tc:label
          value="conditional action (#{attributeController.condition}) and outcome not (#{not attributeController.condition})"/>
      <tc:button label="Click">
        <c:if test="${attributeController.condition}">
          <tc:attribute name="action" value="#{attributeController.reload}"/>
        </c:if>
        <c:if test="${not attributeController.condition}">
          <tc:attribute name="outcome" value="/content/10-intro/intro.xhtml"/>
        </c:if>
      </tc:button>

    </tc:gridLayout>
  </tc:page>
</f:view>