Built-in Mixins

Tapestry includes the following mixins out-of-the-box.

Autocomplete

modifies a text field to provide for auto-completion of text using values retrieved from the server as the user types. See instructions.

DiscardBody

discards a component's body. Returns false from the BeforeRenderBody phase, which prevents the rendering of the body.

FormFieldFocus

instruments the outer Form on which component the focus should be activated. Replaced by OverrideFieldFocus starting in Tapestry 5.4.

NotEmpty

attaches to any component that renders an element. At the end of the render, if the element is empty, then a non-breaking space ( ) is injected into the element.

OverrideFieldFocus

when attached to a form field, causes that field to gain focus. Starting in Tapestry 5.4, this supersedes FormFieldFocus.

RenderClientId

forces a client element to render its client id by ensuring that "getClientId" is called.

RenderDisabled

renders an "disabled" attribute if the containing component is disabled

RenderInformals

renders out all informal parameters, at the end of the BeginRender phase. This mixin can be used with components that render a single tag inside the BeginRender phase.

RenderNotification

triggers event notifications to identify when it enters the BeginRender and AfterRender render phases

TriggerFragment

when applied to a Checkbox or Radio component, links the input field and a FormFragment, making the field control the client-side visibility of the FormFragment

ZoneRefresh

periodically refreshes a Zone by triggering an event on the server using ajax requests.