org.itsnat.core.domutil

Interface ElementRenderer

public interface ElementRenderer

Is used to render values as markup into DOM elements.

Author:

Jose Maria Arranz Santamaria

See Also:

ElementGroupManager.createDefaultElementRenderer()

Method Summary

Methods

Modifier and Type	Method and Description
void	render(Object userObj, Object value, Element elem, boolean isNew) Renders as markup the specified value into the specified element, usually as a text node.
void	unrender(Object userObj, Element elem) Unrenders the markup used to render previously.

Method Detail

render

void render(Object userObj,
          Object value,
          Element elem,
          boolean isNew)

Renders as markup the specified value into the specified element, usually as a text node.

Default implementation renders the specified value inside the first text node with some text (not only spaces, tabs or line feeds) found below the specified element.

Parameters:

userObj - a context object used to provide contextual information. Default implementation ignores it.

value - the value to render.

elem - the element to render the value into.

isNew - true if this is the first time the markup is rendered. Default implementation ignores this parameter.

unrender

void unrender(Object userObj,
            Element elem)

Unrenders the markup used to render previously. This method is called before the markup is removed.

Default implementation does nothing.

Parameters:

userObj - a context object used to provide contextual information. Default implementation ignores it.

elem - the element to render the value into.