Hi Tucker, Jim,
I was able to get dhtml to run in Laszlo-in-10 by making a small change to
source.jsp. Before I put it out for review, am I missing some
functionality? One thing I'm aware of is the loading clock is still shown
in swf.
The attached file goes here,
/legals/laszlo-explorer/source.jsp
and load laszlo-in-10 from laszlo-explorer in dhtml mode.
(A couple of the demos don't fit completely in the window, and at least one
sample page generates a dhtml warning).
Phil
<!-- * X_LZ_COPYRIGHT_BEGIN ***************************************************
* Copyright 2001-2006 Laszlo Systems, Inc. All Rights Reserved. *
* Use is subject to license terms. *
* X_LZ_COPYRIGHT_END ****************************************************** -->
<%@ page import="java.util.ArrayList,
java.util.regex.*,
java.io.*"%>
<%!
class TmpFileManager implements HttpSessionBindingListener
{
private File tempFile;
public void setTempFile(File tmpfile)
{
tempFile = tmpfile;
}
public void valueBound(HttpSessionBindingEvent event)
{
}
public void valueUnbound(HttpSessionBindingEvent event)
{
// remove the temporary file when the session expires
tempFile.delete();
}
}
Pattern amp = Pattern.compile("&");
Pattern lt = Pattern.compile("<");
public String quote(String source) {
// Escape HTML
return
lt.matcher(amp.matcher(source).replaceAll("&")).replaceAll("<");
}
%>
<%!
// Does this pathname point to a valid target directory? Should be
// a subdir of the webapp.
boolean isValidSubdir(String path) {
try {
String canonical = (new File(path)).getCanonicalPath();
String webapp = (new
File((getServletContext().getRealPath(".")))).getCanonicalPath();
return canonical.startsWith(webapp);
} catch (IOException e) {
return false;
}
}
%>
<%
String src = request.getParameter("src");
if (src == null) {
out.println("no src query arg was supplied");
return;
}
String title = request.getParameter("title");
String fname = src;
// Check if url is in proper subdir of this JSP
if (!isValidSubdir(application.getRealPath(src))) {
out.println("invalid path");
return;
}
String sTmpFile = "TempFilePath";
try {
String formAction=request.getParameter("formAction");
String sourceCode=request.getParameter("sourceCode");
int lastSeparator = Math.max(src.lastIndexOf("/"), 0);
String sessionId = session.getId();
String saveAsLabel = "Save as";
String errorMessage = null;
// Temp files need to go in the same directory as sources so that
// includes come out right.
String tempUrl = src.substring(0,
lastSeparator)+"/.tmp_"+sessionId+"_"+src.substring(lastSeparator+1);
String tempFilePath=application.getRealPath(tempUrl);
//new File(tempFilePath).getParentFile().mkdirs();
boolean temp=false;
if ("Update".equals(formAction)) {
ByteArrayOutputStream os = new ByteArrayOutputStream();
String xslfile =
getServletContext().getRealPath("laszlo-explorer/verify.xsl");
org.openlaszlo.utils.TransformUtils.applyTransform(xslfile,
sourceCode, os);
if (os.size() > 0) {
errorMessage = os.toString();
} else {
File tempFile = new File(tempFilePath);
BufferedWriter writer = new BufferedWriter(new
FileWriter(tempFile));
writer.write(sourceCode);
writer.flush();
writer.close();
fname = tempUrl;
temp = true;
// save the file name with the session object
// the file will be deleted when the session expires
Object tmg = session.getAttribute(sTmpFile);
TmpFileManager tmpFileMgr;
if (tmg == null || !(tmg instanceof TmpFileManager)) {
tmpFileMgr = new TmpFileManager();
tmpFileMgr.setTempFile(tempFile);
session.setAttribute(sTmpFile, tmpFileMgr);
} else {
tmpFileMgr = (TmpFileManager) tmg;
}
}
} else if (formAction != null && formAction.startsWith(saveAsLabel)) {
// only allow requests from localhost
if (request.getRemoteAddr().equals("127.0.0.1")) {
response.addHeader("Content-Type","application/octet-strem");
response.addHeader("Content-Disposition","attachment;
filename=\"" +
request.getParameter("saveasfile") + "\"");
out.write(sourceCode);
}
return;
} else {
if ("Reset".equals(formAction)) {
File file = new File(tempFilePath);
if (file.exists()) file.delete();
} else {
if (new File(tempFilePath).exists()) {
temp = true;
fname = tempUrl;
}
}
File file = new
File(temp?tempFilePath:application.getRealPath(src));
BufferedReader reader = new BufferedReader(new FileReader(file));
String line;
StringBuffer sb = new StringBuffer();
while ((line = reader.readLine()) != null) {
sb.append(line);
sb.append("\n");
}
reader.close();
sourceCode = sb.toString();
}
String basefile = src.substring(src.lastIndexOf("/")+1);
%>
<html>
<head>
<link rel="stylesheet" href="../lps/includes/explore.css" type="text/css">
</head>
<body class="source-view"
onload="parent.swf.location.href='loading.jsp?src=<%=
temp?request.getContextPath()+"/"+tempUrl:request.getContextPath()+"/"+src
%>?showTaskBar=false&lzr=<%= request.getParameter("lzr") %>';">
<h2><%= title %></h2>
<form method="post">
<%if (errorMessage != null) {%><p>Error: <%=errorMessage%> The program
was not compiled.<p><%}%>
<input name="src" type="hidden" value="<%= src %>">
<textarea name="sourceCode" id="sourceCode" cols="58" rows="21"
wrap="off"><%= quote(sourceCode) %></textarea><br>
<input type="submit" name="formAction" value="Update">
<input type="submit" name="formAction" value="Reset">
<%if (request.getRemoteAddr().equals("127.0.0.1")) {%>
<input type="submit" name="formAction" value="<%=saveAsLabel%>…">
<input type="text" name="saveasfile" value="<%=basefile%>">
<%}%>
</form>
</body>
</html>
<%
} catch (Exception e) {
out.println("JSP error caught: "+e);
}
%>
