001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.markup.html; 018 019import org.apache.wicket.Component; 020import org.apache.wicket.MarkupContainer; 021import org.apache.wicket.markup.ComponentTag; 022import org.apache.wicket.markup.IMarkupFragment; 023import org.apache.wicket.markup.MarkupStream; 024import org.apache.wicket.markup.resolver.IComponentResolver; 025import org.apache.wicket.util.lang.Args; 026 027/** 028 * For each wicket:head tag a HeaderPartContainer is created and added to the HtmlHeaderContainer 029 * which has been added to the Page. 030 * 031 * @author Juergen Donnerstag 032 */ 033public final class HeaderPartContainer extends WebMarkupContainer implements IComponentResolver 034{ 035 private static final long serialVersionUID = 1L; 036 037 /** The panel or bordered page the header part is associated with */ 038 private final MarkupContainer container; 039 040 /** <wicket:head scope="...">. A kind of namespace */ 041 private final String scope; 042 043 /** 044 * @param id 045 * The component id 046 * @param container 047 * The Panel (or bordered page) the header part is associated with 048 * @param markup 049 */ 050 public HeaderPartContainer(final String id, final MarkupContainer container, 051 final IMarkupFragment markup) 052 { 053 super(id); 054 055 Args.notNull(container, "container"); 056 Args.notNull(markup, "markup"); 057 058 setMarkup(markup); 059 060 this.container = container; 061 062 scope = getScopeFromMarkup(); 063 064 setRenderBodyOnly(true); 065 } 066 067 /** 068 * 069 * @return get "wicket:scope" attribute from <wicket:head> tag 070 */ 071 private String getScopeFromMarkup() 072 { 073 IMarkupFragment markup = getMarkup(); 074 String namespace = markup.getMarkupResourceStream().getWicketNamespace(); 075 ComponentTag tag = (ComponentTag)markup.get(0); 076 return tag.getAttributes().getString(namespace + ":scope"); 077 } 078 079 /** 080 * Get the scope of the header part 081 * 082 * @return The scope name 083 */ 084 public final String getScope() 085 { 086 return scope; 087 } 088 089 /** 090 * The tag must be resolved against the panel and not against the page 091 */ 092 @Override 093 public final Component resolve(final MarkupContainer container, 094 final MarkupStream markupStream, final ComponentTag tag) 095 { 096 // The tag must be resolved against the panel and not against the page 097 return this.container.get(tag.getId()); 098 } 099}