Project Documentation

Summary

Tag name: <trh:head>
UIComponent class: org.apache.myfaces.trinidad.component.html.HtmlHead
Component type: org.apache.myfaces.trinidad.HtmlHead
Required Ancestor Tag: trh:html

Tag for the HTML head element, including the document's title and any style sheets needed by th current look-and-feel. Page authors that use this do not need to use a styleSheet component, as it will automatically be included.

The head component resets the Trinidad EL context when code re-enters the component via an invoke on component call or a visit tree call. See the org.apache.myfaces.trinidad.context.ComponentContextManager for more information.

Code Example(s)

<trh:head title="The Title"/>

Events

Type Phases Description
org.apache.myfaces.trinidad.event.AttributeChangeEventInvoke Application,
Apply Request Values
Event delivered to describe an attribute change. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change event might include the width of a column that supported client-side resizing.

Attributes

Name Type Supports EL? Description
attributeChangeListenerjavax.el.MethodExpressionOnly EL a method reference to an attribute change listener. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change events might include the width of a column that supported client-side resizing.
bindingorg.apache.myfaces.trinidad.component.html.HtmlHeadOnly EL an EL reference that will store the component instance on a bean. This can be used to give programmatic access to a component from a backing bean, or to move creation of the component to a backing bean.
idStringNo the identifier for the component. The identifier must follow a subset of the syntax allowed in HTML:
  • Must not be a zero-length String.
  • First character must be an ASCII letter (A-Za-z) or an underscore ('_').
  • Subsequent characters must be an ASCII letter or digit (A-Za-z0-9), an underscore ('_'), or a dash ('-').
partialTriggersString[]Yes the IDs of the components that should trigger a partial update. This component will listen on the trigger components. If one of the trigger components receives an event that will cause it to update in some way, this component will request to be updated too.
renderedbooleanYes Default Value: true

whether the component is rendered. When set to false, no output will be delivered for this component (the component will not in any way be rendered, and cannot be made visible on the client). If you want to change a component's rendered attribute from false to true using PPR, set the partialTrigger attribute of its parent component so the parent refreshes and in turn will render this component.
titleStringYes The title of the document. (This title doesn't have to match the title on any contained panelPage.)