001// Copyright 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.internal.pageload;
016
017/**
018 * Used to construct component names.
019 */
020public class ComponentName
021{
022    private final String pageName;
023
024    final String nestedId;
025
026    final String completeId;
027
028    ComponentName(String pageName)
029    {
030        this.pageName = pageName;
031        this.nestedId = null;
032        this.completeId = pageName;
033    }
034
035    private ComponentName(String pageName, String nestedId, String completeId)
036    {
037        this.completeId = completeId;
038        this.nestedId = nestedId;
039        this.pageName = pageName;
040    }
041
042    ComponentName child(String embeddedId)
043    {
044        String newNestedId = nestedId == null
045                             ? embeddedId
046                             : nestedId + "." + embeddedId;
047
048        return new ComponentName(pageName, newNestedId, pageName + ":" + newNestedId);
049    }
050}