001 package org.apache.myfaces.tobago.taglib.component; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one or more 005 * contributor license agreements. See the NOTICE file distributed with 006 * this work for additional information regarding copyright ownership. 007 * The ASF licenses this file to You under the Apache License, Version 2.0 008 * (the "License"); you may not use this file except in compliance with 009 * the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, software 014 * distributed under the License is distributed on an "AS IS" BASIS, 015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 016 * See the License for the specific language governing permissions and 017 * limitations under the License. 018 */ 019 020 import org.apache.myfaces.tobago.apt.annotation.BodyContent; 021 import org.apache.myfaces.tobago.apt.annotation.BodyContentDescription; 022 import org.apache.myfaces.tobago.apt.annotation.Tag; 023 import org.apache.myfaces.tobago.apt.annotation.TagAttribute; 024 import org.apache.myfaces.tobago.component.ComponentUtil; 025 import org.apache.myfaces.tobago.component.UIPage; 026 import org.apache.myfaces.tobago.taglib.decl.HasId; 027 028 import javax.faces.context.FacesContext; 029 import javax.servlet.jsp.JspException; 030 import javax.servlet.jsp.tagext.BodyTagSupport; 031 032 /** 033 * Add a style tag. 034 * Collected bodyContent is rendered as content into a style tag. 035 */ 036 @Tag(name = "style", bodyContent = BodyContent.TAGDEPENDENT) 037 @BodyContentDescription(contentType = "css") 038 public class StyleTag extends BodyTagSupport implements HasId { 039 040 private static final long serialVersionUID = -2201525304632479403L; 041 042 private String style; 043 044 public int doEndTag() throws JspException { 045 046 FacesContext facesContext = FacesContext.getCurrentInstance(); 047 UIPage page = ComponentUtil.findPage(facesContext); 048 if (page == null) { 049 throw new JspException("The StyleTag cannot find the UIPage. " 050 + "Check you have defined the StyleTag inside of the PageTag!"); 051 } 052 053 if (style != null) { 054 page.getStyleFiles().add(ComponentUtil.getValueFromEl(style)); 055 } 056 057 if (bodyContent != null) { 058 String classes = bodyContent.getString(); 059 bodyContent.clearBody(); 060 page.getStyleBlocks().add(ComponentUtil.getValueFromEl(classes)); 061 } 062 063 return EVAL_PAGE; 064 } 065 066 public int doStartTag() throws JspException { 067 return EVAL_BODY_BUFFERED; 068 } 069 070 public void release() { 071 super.release(); 072 style = null; 073 } 074 075 public String getStyle() { 076 return style; 077 } 078 079 /** 080 * Name of the stylsheet file to add to page. 081 */ 082 @TagAttribute 083 public void setStyle(String style) { 084 this.style = style; 085 } 086 } 087