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.head; 018 019import java.util.Arrays; 020import java.util.Objects; 021 022import org.apache.wicket.request.Response; 023import org.apache.wicket.request.UrlUtils; 024import org.apache.wicket.request.cycle.RequestCycle; 025 026/** 027 * {@link HeaderItem} for style tags that are rendered using a fixed URL, for example resources from 028 * an external site or context relative urls. 029 * 030 * @author papegaaij 031 */ 032public class CssUrlReferenceHeaderItem extends AbstractCssReferenceHeaderItem 033{ 034 private static final long serialVersionUID = 1L; 035 036 private final String url; 037 038 /** 039 * Creates a new {@code CSSUrlReferenceHeaderItem}. 040 * 041 * @param url 042 * context-relative url of the CSS resource 043 * @param media 044 * the media type for this CSS ("print", "screen", etc.) 045 * @param rel 046 * the rel attribute content 047 */ 048 public CssUrlReferenceHeaderItem(String url, String media, String rel) 049 { 050 super(media, rel); 051 052 this.url = url; 053 } 054 055 /** 056 * Creates a new {@code CSSUrlReferenceHeaderItem}. 057 * 058 * @param url 059 * context-relative url of the CSS resource 060 * @param media 061 * the media type for this CSS ("print", "screen", etc.) 062 */ 063 public CssUrlReferenceHeaderItem(String url, String media) 064 { 065 super(media, null); 066 067 this.url = url; 068 } 069 070 /** 071 * @return context-relative url of the CSS resource 072 */ 073 public String getUrl() 074 { 075 return url; 076 } 077 078 @Override 079 public void render(Response response) 080 { 081 internalRenderCSSReference(response, UrlUtils.rewriteToContextRelative(getUrl(), RequestCycle.get())); 082 } 083 084 @Override 085 public Iterable<?> getRenderTokens() 086 { 087 return Arrays.asList( 088 "css-" + UrlUtils.rewriteToContextRelative(getUrl(), RequestCycle.get()) + "-" + getMedia()); 089 } 090 091 @Override 092 public String toString() 093 { 094 return "CSSUrlReferenceHeaderItem(" + getUrl() + ")"; 095 } 096 097 @Override 098 public int hashCode() 099 { 100 // Not using `Objects.hash` for performance reasons 101 int result = super.hashCode(); 102 result = 31 * result + ((url != null) ? url.hashCode() : 0); 103 result = 31 * result + ((getMedia() != null) ? getMedia().hashCode() : 0); 104 result = 31 * result + ((getRel() != null) ? getRel().hashCode() : 0); 105 return result; 106 } 107 108 @Override 109 public boolean equals(Object o) 110 { 111 if (this == o) 112 return true; 113 if (o == null || getClass() != o.getClass()) 114 return false; 115 if (!super.equals(o)) 116 return false; 117 CssUrlReferenceHeaderItem that = (CssUrlReferenceHeaderItem)o; 118 return Objects.equals(url, that.url) && Objects.equals(getMedia(), that.getMedia()) && 119 Objects.equals(getRel(), that.getRel()); 120 } 121}