javax.faces.application.ResourceDependency Maven / Gradle / Ivy
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package javax.faces.application;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.Inherited;
/**
* Instances of {@link
* javax.faces.component.UIComponent} or {@link
* javax.faces.render.Renderer} that have this annotation (or {@link
* ResourceDependencies} attached at the class level will automatically
* have a resource dependency added so that the named resource will be
* present in user agent's view of the UIViewRoot in which
* this component or renderer is used.
*
*
*
* The default implementation must support attaching this annotation
* to {@link javax.faces.component.UIComponent} or {@link
* javax.faces.render.Renderer} classes. In both cases, the event that
* precipitates the processing of this annotation is the insertion of a
* UIComponent instance into the view hierarchy on an
* initial request for a view. When that event happens, the following
* action must be taken.
*
* If this annotation is not present on the class in question, no action
* must be taken.
Create a {@link javax.faces.component.UIOutput} instance by passing
* javax.faces.Output. to {@link Application#createComponent(java.lang.String)}.
Get the annotation instance from the class and obtain the values of
* the name, library, and target
* attributes.
If library is the empty string, let library be
* null.
If target is the empty string, let target be
* null.
Obtain the renderer-type for the resource name by
* passing name to {@link ResourceHandler#getRendererTypeForResourceName}.
Call setRendererType on the UIOutput
* instance, passing the renderer-type.
Obtain the Map of attributes from the
* UIOutput component by calling {@link javax.faces.component.UIComponent#getAttributes}.
Store the name into the attributes Map under the
* key "name".
If library is non-null, store it under the key
* "library".
If target is non-null, store it under the key
* "target".
Otherwise, if target is null, call {@link
* javax.faces.component.UIViewRoot#addComponentResource(javax.faces.context.FacesContext,
* javax.faces.component.UIComponent)}, passing the UIOutput
* instance as the second argument.
* Example:
@ResourceDependency(library="corporate", name="colorAndMedia.css"),
*
*
* @since 2.0
*/
@Retention(value = RetentionPolicy.RUNTIME)
@Target(value = ElementType.TYPE)
@Inherited
public @interface ResourceDependency {
/**
* The resourceName of the
* resource pointed to by this ResourceDependency. It
* is valid to have EL Expressions in the value of this attribute,
* as long as the expression resolves to an instance of the expected
* type.
*/
public String name();
/**
* The libraryName in which
* the resource pointed to by this ResourceDependency
* resides. If not specified, defaults to the empty string. It is
* valid to have EL Expressions in the value of this attribute, as
* long as the expression resolves to an instance of the expected
* type.
*/
public String library() default "";
/**
* The value given for this attribute
* will be passed as the "target" argument to {@link
* javax.faces.component.UIViewRoot#addComponentResource(javax.faces.context.FacesContext,
* javax.faces.component.UIComponent, java.lang.String)}. If this
* attribute is specified, {@link
* javax.faces.component.UIViewRoot#addComponentResource(javax.faces.context.FacesContext,javax.faces.component.UIComponent)}
* must be called instead, as described above. It is valid to have
* EL Expressions in the value of this attribute, as long as the
* expression resolves to an instance of the expected type.
*/
public String target() default "";
}