/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
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*
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package com.sun.enterprise.diagnostics.report.html;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.util.LinkedList;
import java.util.List;
import java.util.Iterator;
/**
* Basic implementation of an element.
*/
public class HTMLElement implements Element {
/**
* The name of this element.
*/
private String name = null;
/**
* The children of this element which are not attributes.
*/
private List<HTMLComponent> children = new LinkedList<HTMLComponent>();
/**
* The attributes for this element.
*/
private List<Attribute> attributes = new LinkedList<Attribute>();
private static final char TAG_MARKER_BEGIN = '<';
private static final char TAG_MARKER_END = '>';
private static final String SLASH_BEGIN="/>";
private static final String SLASH_END="</";
/**
* Make a new element, specifying the name.
* @param name The name of the element.
*/
public HTMLElement(String name) {
setName(name);
}
/**
* @param child The node to add.
* @return This element.
*/
public void add(HTMLComponent child) {
if (child == null) {
throw new NullPointerException("Child node is null.");
}
if (child == this) {
throw new IllegalArgumentException("Attempt to add a node " +
"to itself. Node is " + toString() + ".");
}
if (child instanceof Attribute) {
attributes.add((Attribute) child);
} else {
children.add(child);
}
}
/**
*/
public Element addElement(String name) {
if (name == null) {
throw new NullPointerException("Element name is null.");
}
Element newElement = new HTMLElement(name);
add(newElement);
return newElement;
}
/**
*/
public Text addComment(String content) {
HTMLComment comment = new HTMLComment(content);
add(comment);
return comment;
}
/**
*/
public Text addText(String text) {
if(text != null) {
Text textNode = new HTMLText(text);
add(textNode);
return textNode;
}
return null;
}
/**
*/
public void addText(Iterator<String> textValues) {
while(textValues.hasNext()) {
Text textNode = new HTMLText(textValues.next());
add(textNode);
}
}
public Attribute addAttribute(String id, String value) {
Attribute att = new HTMLAttribute(id, value);
add(att);
return att;
}
/**
*/
public List<Element> getElements() {
List<Element> retval = new LinkedList<Element>();
for (HTMLComponent node : children) {
if (node instanceof Element) {
retval.add((Element) node);
}
} // Loop over children.
return retval;
}
/**
*/
public List<Element> getElements(String name) {
List<Element> list = new LinkedList<Element>();
for (HTMLComponent node : children) {
if (node instanceof Element) {
Element element = (Element) node;
if (element.getName().equalsIgnoreCase(name)) {
list.add((Element) node);
}
}
} // Loop over children.
return list;
}
/**
*/
public List<Text> getComments() {
List<Text> list = new LinkedList<Text>();
for (HTMLComponent node : children) {
if (node instanceof HTMLComment) {
list.add((HTMLComment) node);
}
} // Loop over children.
return list;
}
/**
*/
public List<Text> getTexts() {
List<Text> retval = new LinkedList<Text>();
for (HTMLComponent node : children) {
if (node instanceof Text) {
retval.add((Text) node);
}
} // Loop over children.
return retval;
}
/**
*/
public List<Attribute> getAttributes() {
List<Attribute> retval = new LinkedList<Attribute>();
retval.addAll(attributes);
return retval;
}
/**
*/
public List<Attribute> getAttributes(String name) {
List<Attribute> retval = new LinkedList<Attribute>();
for (HTMLComponent node : getAttributes()) {
if (node instanceof Attribute) {
Attribute att = (Attribute) node;
if (att.getName().equalsIgnoreCase(name)) {
retval.add((Attribute) node);
}
}
} // Loop over children.
return retval;
}
/**
*/
public List<HTMLComponent> children() {
List<HTMLComponent> childrenList = new LinkedList<HTMLComponent>();
childrenList.addAll(children);
childrenList.addAll(attributes);
return childrenList;
}
/**
* @param child The node to delete.
*/
public void delete(HTMLComponent child) {
if (child instanceof Attribute) {
attributes.remove(child);
} else {
children.remove(child);
}
}
/**
* @see java.lang.Object#toString()
*/
public String toString() {
StringBuffer buf = new StringBuffer();
String eName = Escape.getInstance().encodeEntities(name, " \t\r\n");
buf.append(TAG_MARKER_BEGIN).append(eName);
for (Attribute att : attributes) {
buf.append(" ").append(att.toString());
} // Loop over attributes.
if (children.size() == 0) {
buf.append(SLASH_BEGIN);
} else {
buf.append(TAG_MARKER_END);
for (HTMLComponent node : children) {
buf.append(node.toString());
} // Loop over children.
buf.append(SLASH_END).append(eName).append(TAG_MARKER_END);
}
return buf.toString();
}
/**
*/
public void write(Writer output) throws IOException {
output.append(toString());
output.flush();
}
/**
*/
public void write(File file) throws IOException {
FileWriter fileWriter = new FileWriter(file);
write(fileWriter);
fileWriter.close();
}
/**
*/
public String getName() {
return name;
}
/**
*/
public void setName(String name) {
if (name == null) {
throw new NullPointerException("Element name is null.");
}
if (name.length() == 0) {
throw new IllegalArgumentException("Element name is empty.");
}
this.name = name;
}
/**
* Get all children of this element which are of a specified class.
* @param type The class of the children to obtain.
* @return All children of the specified class.
*/
public <T extends HTMLComponent> List<T> get(Class<T> type) {
List<T> list = new LinkedList<T>();
for (HTMLComponent child : children()) {
if (type.isInstance(child)) {
list.add((T) child);
}
}
return list;
}
}
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