/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.myfaces.shared_tomahawk.renderkit.html.util;
import org.apache.myfaces.shared_tomahawk.config.MyfacesConfig;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HTML;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlRendererUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
/**
* @author Manfred Geiler (latest modification by $Author: grantsmith $)
* @author Anton Koinov
* @version $Revision: 472792 $ $Date: 2006-11-09 07:34:47 +0100 (Do, 09 Nov 2006) $
*/
public final class JavascriptUtils
{
private static final Log log = LogFactory.getLog(JavascriptUtils.class);
public static final String JAVASCRIPT_DETECTED = JavascriptUtils.class.getName() + ".JAVASCRIPT_DETECTED";
private static final String OLD_VIEW_ID = JavascriptUtils.class + ".OLD_VIEW_ID";
private JavascriptUtils()
{
// utility class, do not instantiate
}
private static final Set RESERVED_WORDS =
new HashSet(Arrays.asList(new String[]{
"abstract",
"boolean",
"break",
"byte",
"case",
"catch",
"char",
"class",
"const",
"continue",
"default",
"delete",
"do",
"double",
"else",
"export",
"extends",
"false",
"final",
"finally",
"float",
"for",
"function",
"goto",
"if",
"implements",
"in",
"instanceof",
"int",
"long",
"native",
"new",
"null",
"package",
"private",
"protected",
"public",
"return",
"short",
"static",
"super",
"switch",
"synchronized",
"this",
"throw",
"throws",
"transient",
"true",
"try",
"typeof",
"var",
"void",
"while",
"with"
}));
/**Don't use this function - except when compatibility with the RI is a must,
* as in the name for the clear form parameters script.
*/
public static String getValidJavascriptNameAsInRI(String origIdentifier)
{
return origIdentifier.replaceAll("-", "\\$_");
}
public static String getValidJavascriptName(String s, boolean checkForReservedWord)
{
if (checkForReservedWord && RESERVED_WORDS.contains(s))
{
return s + "_";
}
StringBuffer buf = null;
for (int i = 0, len = s.length(); i < len; i++)
{
char c = s.charAt(i);
if (Character.isLetterOrDigit(c))
{
// allowed char
if (buf != null) buf.append(c);
}
else
{
if (buf == null)
{
buf = new StringBuffer(s.length() + 10);
buf.append(s.substring(0, i));
}
buf.append('_');
if (c < 16)
{
// pad single hex digit values with '0' on the left
buf.append('0');
}
if (c < 128)
{
// first 128 chars match their byte representation in UTF-8
buf.append(Integer.toHexString(c).toUpperCase());
}
else
{
byte[] bytes;
try
{
bytes = Character.toString(c).getBytes("UTF-8");
}
catch (UnsupportedEncodingException e)
{
throw new RuntimeException(e);
}
for (int j = 0; j < bytes.length; j++)
{
int intVal = bytes[j];
if (intVal < 0)
{
// intVal will be >= 128
intVal = 256 + intVal;
}
else if (intVal < 16)
{
// pad single hex digit values with '0' on the left
buf.append('0');
}
buf.append(Integer.toHexString(intVal).toUpperCase());
}
}
}
}
return buf == null ? s : buf.toString();
}
public static String encodeString(String string)
{
if (string == null)
{
return "";
}
StringBuffer sb = null; //create later on demand
String app;
char c;
for (int i = 0; i < string.length (); ++i)
{
app = null;
c = string.charAt(i);
switch (c)
{
case '\\' : app = "\\"; break;
case '"' : app = "\\\""; break;
case '\'' : app = "\\'"; break;
case '\n' : app = "\\n"; break;
case '\r' : app = "\\r"; break;
}
if (app != null)
{
if (sb == null)
{
sb = new StringBuffer(string.substring(0, i));
}
sb.append(app);
} else {
if (sb != null)
{
sb.append(c);
}
}
}
if (sb == null)
{
return string;
}
else
{
return sb.toString();
}
}
public static boolean isJavascriptAllowed(ExternalContext externalContext)
{
MyfacesConfig myfacesConfig = MyfacesConfig.getCurrentInstance(externalContext);
if (myfacesConfig.isAllowJavascript())
{
if (myfacesConfig.isDetectJavascript())
{
return isJavascriptDetected(externalContext);
}
else
{
return true;
}
}
else
{
return false;
}
}
public static void setJavascriptDetected(HttpSession session, boolean value)
{
session.setAttribute(JAVASCRIPT_DETECTED, Boolean.valueOf(value));
}
public static boolean isJavascriptDetected(ExternalContext externalContext)
{
//TODO/FIXME (manolito): This info should be better stored in the viewroot component and not in the session
Boolean sessionValue = (Boolean)externalContext.getSessionMap().get(JAVASCRIPT_DETECTED);
return sessionValue != null && sessionValue.booleanValue();
}
public static void setOldViewId(ExternalContext externalContext, String viewId)
{
externalContext.getRequestMap().put(OLD_VIEW_ID, viewId);
}
public static String getOldViewId(ExternalContext externalContext)
{
return (String)externalContext.getRequestMap().get(OLD_VIEW_ID);
}
}