    001// Copyright 2006, 2009 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007//     http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.annotations;
    016
    017import java.lang.annotation.Documented;
    018import static java.lang.annotation.ElementType.FIELD;
    019import java.lang.annotation.Retention;
    020import static java.lang.annotation.RetentionPolicy.RUNTIME;
    021import java.lang.annotation.Target;
    022
    023import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.COMPONENT;
    024import org.apache.tapestry5.ioc.annotations.UseWith;
    025
    026/**
    027 * Used to attach one or more instance mixins to an embedded component. Each mixin is specified as a specific class.
    028 * This annotation is only recognized when used in conjuction with the {@link Component} annotation.
    029 *
    030 * @see Mixins
    031 */
    032@Target(FIELD)
    033@Documented
    034@Retention(RUNTIME)
    035@UseWith(COMPONENT)
    036public @interface MixinClasses
    037{
    038    Class[] value();
    039
    040    /**
    041     * Specifies the ordering constraints for each mixin specified by value. Order may be a 0-length array signifying
    042     * no ordering for any mixin specified by value.  Otherwise, it must be the same length as value.
    043     * Each String can specify multiple constraints, separated by ; (before:mixina;after:mixinb).
    044     * Alternatively, the entry may be null or the empty string to specify no ordering constraints for that particular
    045     * mixin.
    046     * @since 5.2.0.0
    047     */
    048    String[] order() default {};
    049
    050}