001// Copyright 2005 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.tapestry.pageload;
016
017import org.apache.tapestry.TapestryConstants;
018
019/**
020 * Returns the namespace property for the
021 * {@link org.apache.tapestry.TapestryConstants#PAGE_CLASS_NAME} key.
022 * 
023 * @author Howard M. Lewis Ship
024 * @since 4.0
025 */
026public class NamespaceDefaultPageClassProvider implements ComponentClassProvider
027{
028
029    public String provideComponentClassName(ComponentClassProviderContext context)
030    {
031        // This may be null, if the namespace fails to define this meta data value.
032
033        return context.getNamespace().getPropertyValue(TapestryConstants.PAGE_CLASS_NAME);
034    }
035
036}