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 String style; 041 042 public int doEndTag() throws JspException { 043 044 FacesContext facesContext = FacesContext.getCurrentInstance(); 045 UIPage page = ComponentUtil.findPage(facesContext); 046 if (page == null) { 047 throw new JspException("The StyleTag cannot find the UIPage. " 048 + "Check you have defined the StyleTag inside of the PageTag!"); 049 } 050 051 if (style != null) { 052 page.getStyleFiles().add(ComponentUtil.getValueFromEl(style)); 053 } 054 055 if (bodyContent != null) { 056 String classes = bodyContent.getString(); 057 bodyContent.clearBody(); 058 page.getStyleBlocks().add(ComponentUtil.getValueFromEl(classes)); 059 } 060 061 return EVAL_PAGE; 062 } 063 064 public int doStartTag() throws JspException { 065 return EVAL_BODY_BUFFERED; 066 } 067 068 public void release() { 069 super.release(); 070 style = null; 071 } 072 073 public String getStyle() { 074 return style; 075 } 076 077 /** 078 * Name of the stylsheet file to add to page. 079 */ 080 @TagAttribute 081 public void setStyle(String style) { 082 this.style = style; 083 } 084 } 085