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UserDialogRequestHandler.javaAPI DocApache log4j 1.2.154835Sat Aug 25 00:09:34 BST 2007com.psibt.framework.net

UserDialogRequestHandler

public class UserDialogRequestHandler extends RootRequestHandler
This class implements a RequestHandler for the path "/userdialog/" in the PluggableHTTPServer. A simple input form is presented in the browser where you can enter a message. This message will be sent to the PluggableHTTPServer and shown in a JOptionPane MessageDialog.
author
Volker Mentzner

Fields Summary
private Component
parentComponent
Constructors Summary
public UserDialogRequestHandler()
Creates a new UserDialogRequestHandler object

    this(null);
public UserDialogRequestHandler(Component parentComponent)
Creates a new UserDialogRequestHandler object with a parentComponent reference

    this.setTitle("user dialog");
    this.setDescription("show user dialog");
    this.setHandledPath("/userdialog/");
    this.parentComponent = parentComponent;
Methods Summary
public booleanhandleRequest(java.lang.String request, Writer out)
Handles the given request and writes the reply to the given out-stream.

param
request - client browser request
param
out - Out stream for sending data to client browser
return
if the request was handled by this handler : true, else : false

    String path = "";
    String query = null;
    try {
      URL url = new URL("http://localhost"+request);
      path = url.getPath();
      query = url.getQuery();
      if (path.startsWith(this.getHandledPath()) == false) {
        return false;
      }

      out.write("HTTP/1.0 200 OK\r\n");
      out.write("Content-type: text/html\r\n\r\n");
      out.write("<HTML><HEAD><TITLE>" + this.getTitle() + "</TITLE></HEAD>\r\n");
      out.write("<BODY><H1>" + this.getDescription() + "</H1>\r\n");
      if ((query != null) && (query.length() >= 0)) {
        int idx = query.indexOf("=");
        String message = query.substring(idx+1, query.length());
        // replace '+' by space
        message = message.replace('+", ' ");
        // replace hex strings starting with '%' by their values
        idx = message.indexOf("%");
        while (idx >= 0) {
          String sl = message.substring(0, idx);
          String sm = message.substring(idx+1, idx+3);
          String sr = message.substring(idx+3, message.length());
          try {
            int i = Integer.parseInt(sm, 16);
            sm = String.valueOf((char)i);
          }
          catch (Exception ex) {
            sm = "";
          }
          message = sl + sm + sr;
          idx = message.indexOf("%");
        }
        // show message in a new thread
        if ((message != null) && (message.length() > 0)) {
          Thread t = new Thread(new DialogThread(parentComponent, message));
          t.start();
        }
      }
      out.write("<form name=\"Formular\" ACTION=\""+this.getHandledPath()+"+\" METHOD=\"PUT\">");
      out.write("<table>\r\n");
      out.write(" <tr><td>Send message to user</td></tr>\r\n");
      out.write(" <tr><td><textarea name=\"message\" rows=10 cols=50></textarea></td></tr>\r\n");
      out.write("</table>\r\n");
      out.write("<input type=submit value=\"Submit\">");
      out.write("</form>");
      out.write("</BODY></HTML>\r\n");
      out.flush();
      return true;
    } catch (Exception ex) {
      return false;
    }