org.itsnat.core.domutil

Interface ElementLabelRenderer

public interface ElementLabelRenderer

Used by ElementLabel objects to render the associated value.

Author:

Jose Maria Arranz Santamaria

See Also:

ElementLabel.setElementLabelRenderer(ElementLabelRenderer), ElementGroupManager.createDefaultElementLabelRenderer()

Method Summary

Methods

Modifier and Type	Method and Description
void	renderLabel(ElementLabel label, Object value, Element elem, boolean isNew) Renders as markup the specified value into the specified element of the label.
void	unrenderLabel(ElementLabel label, Element elem) Unrenders the label markup.

Method Detail

renderLabel

void renderLabel(ElementLabel label,
               Object value,
               Element elem,
               boolean isNew)

Renders as markup the specified value into the specified element of the label.

The specified element must be used to render the value below, usually as a text node.

Default implementation renders the specified value inside the first text node found below the specified content element.

Parameters:

label - the target label.

value - the value to render.

elem - the DOM element to render the value inside. This element is a hint, if provided, should be obtained by calling ElementGroup.getParentElement().

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

unrenderLabel

void unrenderLabel(ElementLabel label,
                 Element elem)

Unrenders the label markup. This method is called before the markup is removed.

Default implementation does nothing.

Parameters:

label - the target label.

elem - the DOM element used to render the label. This element is a hint, if provided, should be obtained by calling ElementGroup.getParentElement()>.