/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jsp.java;
import com.caucho.jsp.JspParseException;
import com.caucho.jsp.TagInstance;
import com.caucho.vfs.WriteStream;
import javax.servlet.jsp.tagext.VariableInfo;
import java.io.IOException;
/**
* Represents the body for a SimpleTag
*/
public class JspBody extends JspFragmentNode {
private TagInstance _tag;
/**
* Adds a text node.
*/
public JspNode addText(String text)
throws JspParseException
{
JspNode node = new StaticText(_gen, text, this);
addChild(node);
return node;
}
/**
* Returns the tag name for the current tag.
*/
public String getCustomTagName()
{
if (isJspFragment())
return "_jsp_parent_tag";
else
return getParent().getCustomTagName();
}
/**
* Returns true if the children are static.
*/
public boolean isStatic()
{
if (_children == null)
return true;
for (int i = 0; i < _children.size(); i++) {
if (! _children.get(i).isStatic())
return false;
}
return true;
}
/**
* Returns the TagInstance of the enclosing parent.
*/
public TagInstance getTag()
{
JspNode parent = getParent();
if (parent == null)
return _gen.getRootTag();
else if (parent instanceof CustomSimpleTag ||
parent instanceof TagFileTag) {
if (_tag == null)
_tag = new TagInstance(_gen.getTagManager());
return _tag;
}
else
return parent.getTag();
}
/**
* Called after all the attributes from the tag.
*/
public void endAttributes()
throws JspParseException
{
super.endAttributes();
JspNode parent = getParent();
if (parent == null
// parent instanceof JspRoot ||
|| parent instanceof JspTop) {
throw error(L.l("jsp:body must be contained in a valid tag."));
}
else if (parent instanceof JspBody
|| parent instanceof JspAttribute) {
throw error(L.l("jsp:body is not allowed in <{0}>",
parent.getTagName()));
}
if (parent instanceof GenericTag) {
GenericTag tag = (GenericTag) parent;
if ("tagdependent".equals(tag.getBodyContent())
&& _gen.getJspBuilder() != null) {
_gen.getJspBuilder().startTagDependent();
}
}
}
/**
* Generates the XML text representation for the tag validation.
*
* @param os write stream to the generated XML.
*/
public void printXml(WriteStream os)
throws IOException
{
os.print("<jsp:body");
os.print(" jsp:id=\"" + _gen.generateJspId() + "\">");
printXmlChildren(os);
os.print("</jsp:body>");
}
/**
* Generates the prologue.
*/
public void generatePrologue(JspJavaWriter out)
throws Exception
{
JspNode parent = getParent();
if (! isJspFragment()) {
generatePrologueChildren(out);
return;
}
super.generatePrologue(out);
TagInstance parentTag = getParent().getTag();
boolean isSimple = false;
if (parentTag == null || parentTag.isTop()) {
}
else if (! getTag().isTop()) {
}
else if (parentTag.isSimpleTag()) {
getTag().setId(TagInstance.FRAGMENT_WITH_SIMPLE_PARENT);
}
else
getTag().setId(TagInstance.FRAGMENT_WITH_TAG_PARENT);
}
/**
* Generates the prologue as a child, i.e. in the fragment
* definition itself.
*/
public void generatePrologueChildren(JspJavaWriter out)
throws Exception
{
super.generatePrologueChildren(out);
JspNode parent = getParent();
if (parent instanceof GenericTag) {
GenericTag tag = (GenericTag) parent;
tag.printVarDeclaration(out, VariableInfo.AT_BEGIN);
tag.printVarDeclaration(out, VariableInfo.NESTED);
}
}
/**
* Direct generation of the body is forbidden.
*/
/*
public void generate(JspJavaWriter out)
throws Exception
{
throw error(L.l("jsp:body must be contained in a valid tag."));
}
*/
}