001    // Copyright 2008 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;
016    
017    import java.util.Map;
018    
019    /**
020     * Base class for implementing {@link OptionModel}.  Subclasses must implement {@link
021     * org.apache.tapestry5.OptionModel#getLabel()} and {@link org.apache.tapestry5.OptionModel#getValue()} }.
022     */
023    public abstract class AbstractOptionModel implements OptionModel
024    {
025        /**
026         * Returns false.
027         */
028        public boolean isDisabled()
029        {
030            return false;
031        }
032    
033        /**
034         * Returns null.
035         */
036        public Map<String, String> getAttributes()
037        {
038            return null;
039        }
040    }