/*
* Copyright (c) 1998-2010 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 Software Foundation, 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.util.L10N;
import com.caucho.vfs.WriteStream;
import com.caucho.xml.QName;
import java.io.IOException;
import java.util.ArrayList;
public class JspElement extends JspContainerNode {
static final L10N L = new L10N(JspElement.class);
static final private QName NAME = new QName("name");
private String _name;
private JspAttribute _attrName;
private ArrayList<QName> _attrNames = new ArrayList<QName>();
private ArrayList<JspAttribute> _attrValues = new ArrayList<JspAttribute>();
/**
* Adds an attribute.
*
* @param name the attribute name
* @param value the attribute value
*/
public void addAttribute(QName name, String value)
throws JspParseException
{
if (NAME.equals(name)) {
_name = value;
}
else {
throw error(L.l("`{0}' is an unknown jsp:element attribute. See the JSP documentation for a complete list of jsp:element directive attributes.",
name.getName()));
}
}
/**
* Adds an attribute.
*
* @param name the attribute name
* @param value the attribute value
*/
public void addAttribute(QName name, JspAttribute value)
throws JspParseException
{
if (_name == null && NAME.equals(name)) {
_attrName = value;
}
else {
_attrNames.add(name);
_attrValues.add(value);
}
}
/**
* When the element complets.
*/
public void endElement()
throws JspParseException
{
if (_name == null && _attrName == null) {
throw error(L.l("jsp:element requires a `name' attribute."));
}
}
/**
* Return true if the node only has static text.
*/
public boolean isStatic()
{
return false;
}
@Override
public boolean hasCustomTag()
{
if (super.hasCustomTag())
return true;
// jsp/0433
for (JspAttribute attrValue : _attrValues) {
if (attrValue.hasCustomTag())
return true;
}
return false;
}
/**
* 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:element name=\"" + _name + "\">");
printXmlChildren(os);
os.print("</jsp:element>");
}
/**
* Generates the code for the tag
*
* @param out the output writer for the generated java.
*/
public void generate(JspJavaWriter out)
throws Exception
{
String var = null;
if (_attrName != null) {
var = "_caucho_var" + _gen.uniqueId();
out.println("String " + var + " = " + _attrName.generateValue() + ";");
}
else if (hasELAttribute(_name)) {
var = "_caucho_var" + _gen.uniqueId();
int index = _gen.addExpr(_name);
out.println("String " + var + " = _caucho_expr_" + index + ".evalString(_jsp_env);");
}
else if (hasRuntimeAttribute(_name)) {
// jsp/0408
var = "_caucho_var" + _gen.uniqueId();
out.println("String " + var + " = " + getRuntimeAttribute(_name) + ";");
}
if (var != null) {
out.addText("<");
out.println("out.print(" + var + ");");
}
else
out.addText("<" + _name);
for (int i = 0; i < _attrNames.size(); i++) {
QName name = _attrNames.get(i);
JspAttribute value = _attrValues.get(i);
out.addText(" " + name.getName() + "=\"");
if (value.isStatic())
out.addText(value.getStaticText());
else
out.print("out.print(" + value.generateValue() + ");");
out.addText("\"");
}
out.addText(">");
generateChildren(out);
if (var != null) {
out.println("out.print(\"</\");");
out.println("out.print(" + var + ");");
out.println("out.print(\">\");");
}
else
out.addText("</" + _name + ">");
}
}