    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
    015    package org.apache.tapestry5.annotations;
    016
    017    import java.lang.annotation.Documented;
    018    import static java.lang.annotation.ElementType.FIELD;
    019    import java.lang.annotation.Retention;
    020    import static java.lang.annotation.RetentionPolicy.RUNTIME;
    021    import java.lang.annotation.Target;
    022
    023    import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.COMPONENT;
    024    import org.apache.tapestry5.ioc.annotations.UseWith;
    025
    026    /**
    027     * Used to attach one ore more instance mixin to an embedded component. Each mixin is specified in terms of a logical
    028     * mixin type name. This annotation is only recognized when used in conjuction with the {@link Component} annotation.
    029     *
    030     * @see MixinClasses
    031     */
    032    @Target(FIELD)
    033    @Documented
    034    @Retention(RUNTIME)
    035    @UseWith(COMPONENT)
    036    public @interface Mixins
    037    {
    038
    039        /**
    040         * One or more mixin type names and optional constraints, from which actual mixin class names can be resolved.
    041         * For specifying constraints, do:
    042         * mixinname::constraint1;constraint2
    043         * For instance:
    044         * mixina::before:mixinb;after:mixinc;after:mixind
    045         */
    046        String[] value();
    047    }