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Re: FormCardHandler.notifyButtonClick()

From: Dave Makower <davemak@pencom.com>
Date: Thu, 7 Nov 1996 12:30:15 -0500
Message-Id: <v01540b05aea7cb2ca804@[199.171.199.246]>
To: www-jigsaw@w3.org
Here is the html generated by the FormCardResource.  
It seems that the HTML that results (eventually) from 
addButton() causes a <form> tag without a </form> closing 
tag.  Perhaps this is what's causing the strange behavior 
I described?


(NOTE:  the actual Java code that generated this 
is slightly different from what I sent previously, 
but the important stuff is the same.  Also note that
I inserted newlines in the following HTML.)

======================== BEGIN INSERTED HTML ========================

<html>
<head>
<title>Generating VirtualContainerResources and LeafResources forSimpleCTest_1</title>
</head>
<body>
<h1>Generating VirtualContainerResources and LeafResources forSimpleCTest_1</h1>
<h3>Parent: <a href="http://pc10117.pencom.com:9999/Admin/Editor/MetaAdmin/">MetaAdmin</a>
<h2>com.pencom.metamagic.c_code.SimpleCMetaRepository</h2>
<form action="http://pc10117.pencom.com:9999/Admin/Editor/editor@3/Generate+MetaRepository" method="POST">
<table width="100%">
</table>
<p>
<input type="submit" name="submit" value="Ok">
<input type="reset" name="submit" value="Reset">
</form>
<hr>
<form method="GET" action="http://pc10117.pencom.com:9999/Admin/Editor/editor@3/Generate+MetaRepository/Generate">
<input type="submit" name="BUTTONRESERVEDBUTTON" value="Generate">
<form method="GET" action="http://pc10117.pencom.com:9999/Admin/Editor/editor@3/Generate+MetaRepository/Delete">
<input type="submit" name="BUTTONRESERVEDBUTTON" value="Delete">
<hr>
<table>
<tr>
<th align=center>
<a href="http://pc10117.pencom.com:9999/Admin/Editor/editor@3/Attributes">Attributes</a> </th>
</tr>
</table>
</body>
</html>

=========================== END INSERTED HTML =============================


>Dave Makower writes:
> > I'm observing some strange behavior with the FormCardHandler class.  (Using
> > Jigsaw 1.0a3)
> > 
> > I have an editor class which extends GenericResourceEditor.  In the
> > defineCards() method, I call a method that has the following code:
> > 
> >    MyHandler handler = new MyHandler(target);
> >    FormCardResource card = defineCard(handler, "MyCardName", "MyCardTitle");
> >    card.addButton("Generate");
> >    card.addButton("Delete");
> > 
> > Then, in the notifyButtonClick() method for the class MyHandler, I have the
> > following code:
> > 
> >    System.out.println("Got button click: \"" + label + "\".");
> > 
> > The strange thing is that no matter which button I click, the label seems
> > to be "Generate" -- never "Delete".  That is, the println statement always
> > causes the following console output:
> > 
> >    Got button click: "Generate".
> > 
> > Why is this?
>
>That's strange, here are a few hints to chase the bug:
>
>a) Check the generated HTML, and make sure the buttons have the
>   correct labels there (it should be the case).
>
>b) Hack the FormCardResource.lookup method, and add some traces, here
>   is a sample of what can be done:
>
>   public boolean lookup(LookupState ls, LookupResult lr) 
>        throws HTTPException
>    {
>        if ( super.lookup(ls, lr) )
>            return true;
>        String label = ls.getNextComponent() ;
>        // Is this a valid button ?
>        for (int i = 0 ; i < vbuttons.size() ; i++) {
>            String button = (String) vbuttons.elementAt(i) ;
>System.out.println("FormCardResource: checking "+button+" against "+label);
>            if ( button.equals(label) ) {
>                // Notify the button click:
>                try {
>System.out.println("FormcardResource: found "+label);
>                    handler.notifyButtonClick(label) ;
>                } catch (FormProcessingException ex) {
>                    lr.setTarget(null);
>                    return false;
>                }
>                lr.setTarget(this);
>                return true;
>            }
>        }
>        // Unknown button:
>        lr.setTarget(null);
>        return true;
>    }
>
>Let me know what happens with these traces...
>
>Anselm.


+---------------------+-------------------------+---------------------+
|    Dave Makower     |    davemak@pencom.com   |   WWW Specialist    |
+---------------------+-------------------------+---------------------+
|     Co-author of "Java Programming Basics" (Henry Holt/MIS:Press)   |
|                 http://www.pencom.com/javabasics/                   |
+----------------------------------+----------------------------------+
|   Pencom Web Works               |   (212) 513-7777   voice         |
|   Pencom Systems Inc.            |   (212) 513-1975   fax           |
|   40 Fulton St.                  |                                  |
|   New York, NY  10038            |   http://www.pencom.com/         |
+----------------------------------+----------------------------------+
Received on Thursday, 7 November 1996 12:29:07 GMT

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