/******************************************************************************
* Copyright (c) 2002 - 2011 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*****************************************************************************/
package com.ibm.wala.cast.js.html;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.Stack;
import com.ibm.wala.cast.tree.CAstSourcePositionMap.Position;
import com.ibm.wala.util.collections.HashMapFactory;
import com.ibm.wala.util.collections.Pair;
public class DefaultSourceExtractor extends DomLessSourceExtractor{
protected static class HtmlCallBack extends DomLessSourceExtractor.HtmlCallback{
private final HashMap<String, String> constructors = HashMapFactory.make();
private final Stack<String> stack = new Stack<String>();
private final Stack<ITag> forms = new Stack<ITag>();
private final Set<Pair<ITag,String>> sets = new HashSet<Pair<ITag,String>>();
public HtmlCallBack(URL entrypointUrl, IUrlResolver urlResolver) {
super(entrypointUrl, urlResolver);
constructors.put("FORM", "DOMHTMLFormElement");
constructors.put("TABLE", "DOMHTMLTableElement");
}
@Override
public void handleEndTag(ITag tag) {
super.handleEndTag(tag);
endElement(stack.pop());
if (tag.getName().equalsIgnoreCase("FORM")) {
forms.pop();
}
for(Entry<String,Pair<String, Position>> e : tag.getAllAttributes().entrySet()) {
String a = e.getKey();
String v = e.getValue().fst;
if (v != null && v.startsWith("javascript:")) {
try {
entrypointRegion.println(" " + v.substring(11), e.getValue().snd, new URL(tag.getElementPosition().getURL().toString() + "#" + a), true);
} catch (MalformedURLException ex) {
entrypointRegion.println(v.substring(11), e.getValue().snd, entrypointUrl, false);
}
}
}
}
@Override
protected void handleDOM(ITag tag, String funcName) {
String cons = constructors.get(tag.getName().toUpperCase());
if(cons == null) cons = "DOMHTMLElement";
writeElement(tag, cons, funcName);
newLine();
}
private void printlnIndented(String line, ITag relatedTag){
printlnIndented(line, relatedTag==null? null: relatedTag.getElementPosition());
}
private void printlnIndented(String line, Position pos){
StringBuilder indentedLine = new StringBuilder();
for (int i = 0 ; i < stack.size() ; i++){
indentedLine.append(" ");
}
indentedLine.append(line);
if (pos == null){
domRegion.println(indentedLine.toString());
} else {
domRegion.println(indentedLine.toString(), pos, entrypointUrl, false);
}
}
private void newLine(){
domRegion.println("");
}
private String makeRef(String object, String property) {
assert object != null && property != null;
return object + "[\"" + property + "\"]";
}
protected void writeElement(ITag tag, String cons, String varName){
Map<String, Pair<String, Position>> attrs = tag.getAllAttributes();
printlnIndented("function make_" + varName + "(parent) {", tag);
stack.push(varName);
printlnIndented("this.temp = " + cons + ";", tag);
printlnIndented("this.temp(\"" + tag.getName() + "\");", tag);
for (Map.Entry<String, Pair<String, Position>> e : attrs.entrySet()){
String attr = e.getKey();
String value = e.getValue().fst;
writeAttribute(tag, e.getValue().snd, attr, value, "this", varName);
}
if (tag.getName().equalsIgnoreCase("FORM")) {
forms.push(tag);
printlnIndented(" document.forms[document.formCount++] = this;", tag);
printlnIndented(" var currentForm = this;", tag);
} if (tag.getName().equalsIgnoreCase("INPUT")) {
String prop = attrs.containsKey("name") ? attrs.get("name").fst : null;
String type = attrs.containsKey("type") ? attrs.get("type").fst : null;
if (type != null && prop != null) {
//input tags do not need to be in a form
if (!forms.isEmpty()) {
if (type.equalsIgnoreCase("RADIO")) {
if (! sets.contains(Pair.make(forms.peek(), prop))) {
sets.add(Pair.make(forms.peek(), prop));
printlnIndented(" " + makeRef("currentForm", prop) + " = new Array();", tag);
printlnIndented(" " + makeRef("currentForm", prop + "Counter") + " = 0;", tag);
}
printlnIndented(" " + makeRef(makeRef("currentForm", prop), prop + "Counter++") + " = this;", tag);
} else {
printlnIndented(" " + makeRef("currentForm", prop) + " = this;", tag);
}
}
}
}
assert varName != null && !"".equals(varName);
printlnIndented(varName + " = this;", tag);
printlnIndented("document." + varName + " = this;", tag);
printlnIndented("parent.appendChild(this);", tag);
}
protected void writeAttribute(ITag tag, Position pos, String attr, String value, String varName, String varName2) {
writePortletAttribute(tag, attr, value, varName);
writeEventAttribute(tag, pos, attr, value, varName, varName2);
}
protected void writeEventAttribute(ITag tag, Position pos, String attr, String value, String varName, String varName2){
//There should probably be more checking to see what the attributes are since we allow things like: ; to be used as attributes now.
if(attr.length() >= 2 && attr.substring(0,2).equals("on")) {
printlnIndented(varName + "." + attr + " = function " + tag.getName().toLowerCase() + "_" + attr + "(event) {" + value + "};", tag);
entrypointRegion.println(varName2 + "." + attr + "(null);", tag.getElementPosition(), entrypointUrl, false);
} else if (value != null) {
Pair<String, Character> x = quotify(value);
value = x.fst;
char quote = x.snd;
if (attr.equals(attr.toUpperCase())) {
attr = attr.toLowerCase();
}
printlnIndented(varName + "['" + attr + "'] = " + quote + value + quote + ";", tag);
}
}
protected void writePortletAttribute(ITag tag, String attr, String value, String varName){
if(attr.equals("portletid")) {
if(value.substring(value.length()-4).equals("vice")) {
newLine(); newLine();
printlnIndented("function cVice() { var contextVice = " + varName + "; }\ncVice();\n", tag);
} else if(value.substring(value.length()-4).equals("root")) {
newLine(); newLine();
printlnIndented("function cRoot() { var contextRoot = " + varName + "; }\ncRoot();\n", tag);
}
}
}
protected void endElement(String name) {
printlnIndented("};", (Position)null);
if (stack.isEmpty()) {
printlnIndented("new make_" + name + "(document);\n\n", (Position)null);
} else {
printlnIndented("new make_" + name + "(this);\n", (Position)null);
}
}
}
@Override
protected IGeneratorCallback createHtmlCallback(URL entrypointUrl, IUrlResolver urlResolver) {
return new HtmlCallBack(entrypointUrl, urlResolver);
}
}