public void applyAttachedObject(FacesContext context, UIComponent parent) {
FaceletContext ctx =
(FaceletContext) context.getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY);
// cast to a ValueHolder
ValueHolder vh = (ValueHolder) parent;
ValueExpression ve = null;
Converter c = null;
if (this.binding != null) {
ve = this.binding.getValueExpression(ctx, Converter.class);
c = (Converter) ve.getValue(ctx);
}
if (c == null) {
c = this.createConverter(ctx);
if (ve != null) {
ve.setValue(ctx, c);
}
}
if (c == null) {
throw new TagException(this.tag, "No Converter was created");
}
this.setAttributes(ctx, c);
vh.setConverter(c);
Object lv = vh.getLocalValue();
FacesContext faces = ctx.getFacesContext();
if (lv instanceof String) {
vh.setValue(c.getAsObject(faces, parent, (String) lv));
}
}
public void apply(FaceletContext ctx, UIComponent parent)
throws IOException, FacesException, FaceletException, ELException {
Util.notNull("parent", parent);
UIComponent facetComponent = parent.getFacets().get(UIViewRoot.METADATA_FACET_NAME);
if (facetComponent == null) {
parent.getAttributes().put(FacetHandler.KEY, UIViewRoot.METADATA_FACET_NAME);
try {
this.nextHandler.apply(ctx, parent);
} finally {
parent.getAttributes().remove(FacetHandler.KEY);
}
facetComponent = parent.getFacets().get(UIViewRoot.METADATA_FACET_NAME);
if (!(facetComponent instanceof UIPanel)) {
UIComponent panelGroup =
ctx.getFacesContext().getApplication().createComponent(UIPanel.COMPONENT_TYPE);
panelGroup.getAttributes().put(UIComponent.ADDED_BY_PDL_KEY, Boolean.TRUE);
panelGroup.getChildren().add(facetComponent);
parent.getFacets().put(UIViewRoot.METADATA_FACET_NAME, panelGroup);
facetComponent = panelGroup;
facetComponent.setId(UIViewRoot.METADATA_FACET_NAME);
}
}
}
/**
* Create a Converter instance
*
* @param ctx FaceletContext to use
* @return Converter instance, cannot be null
*/
protected Converter createConverter(FaceletContext ctx) {
if (this.converterId == null) {
throw new TagException(
this.tag,
"Default behavior invoked of requiring a converter-id passed in the constructor, must override ConvertHandler(ConverterConfig)");
}
return ctx.getFacesContext().getApplication().createConverter(this.converterId);
}
/**
* Set Converter instance on parent ValueHolder if it's not being restored.
*
* <ol>
* <li>Cast to ValueHolder
* <li>If "binding" attribute was specified, fetch/create and re-bind to expression.
* <li>Otherwise, call {@link #createConverter(FaceletContext) createConverter}.
* <li>Call {@link com.sun.faces.facelets.tag.MetaTagHandlerImpl#setAttributes(FaceletContext,
* Object) setAttributes} on Converter instance.
* <li>Set the Converter on the ValueHolder
* <li>If the ValueHolder has a localValue, convert it and set the value
* </ol>
*
* @see ValueHolder
* @see Converter
* @see #createConverter(FaceletContext)
* @see com.sun.faces.facelets.FaceletHandler#apply(com.sun.faces.facelets.FaceletContext,
* javax.faces.component.UIComponent)
*/
public final void apply(FaceletContext ctx, UIComponent parent)
throws IOException, FacesException, FaceletException, ELException {
// only process if it's been created
if (parent == null || !(parent.getParent() == null)) {
return;
}
if (parent instanceof ValueHolder) {
applyAttachedObject(ctx.getFacesContext(), parent);
} else if (parent.getAttributes().containsKey(Resource.COMPONENT_RESOURCE_KEY)) {
if (null == getFor()) {
// PENDING(): I18N
throw new TagException(
this.tag,
"converter tags nested within composite components must have a non-null \"for\" attribute");
}
// Allow the composite component to know about the target
// component.
CompositeComponentTagHandler.getAttachedObjectHandlers(parent).add(this);
} else {
throw new TagException(this.tag, "Parent not an instance of ValueHolder: " + parent);
}
}
