001// Copyright 2012 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.services.compatibility; 016 017import org.apache.tapestry5.ioc.annotations.UsesMappedConfiguration; 018 019/** 020 * Used globally to track what compatibility traits are enabled. By default, in Tapestry 5.4, 021 * all traits are enabled unless explicitly disabled. This behavior may change in Tapestry 5.5. 022 * <p/> 023 * The configuration allows traits to be explicitly enabled or disabled. 024 * 025 * @since 5.4 026 */ 027@UsesMappedConfiguration(key = Trait.class, value = Boolean.class) 028public interface Compatibility 029{ 030 /** 031 * Returns true if the indicated compatibility trait is enabled. 032 * 033 * @param trait 034 * @return true if enabled, false otherwise 035 */ 036 boolean enabled(Trait trait); 037}