[kepler-dev] Help with Pop Up Box in Kepler

[subhav mital]

Hey,

After I create my actor named UserIp, I right click on it, and use the 'save
in library' option.

When I try to call it (drag and drop the actor into the working window)
after re-opening Kepler, I get the error: "Change Failed: Cannot create
entity without a class name.in [external stream] at line 1 column 29.

The stack trace is:

com.microstar.xml.XmlException: Cannot create entity without a class name.
in [external stream] at line 1 and column 29
at ptolemy.moml.MoMLParser._checkForNull(MoMLParser.java:3618)
at ptolemy.moml.MoMLParser._createEntity(MoMLParser.java:3790)
at ptolemy.moml.MoMLParser.startElement(MoMLParser.java:2379)
at com.microstar.xml.XmlParser.parseElement(XmlParser.java:921)
at com.microstar.xml.XmlParser.parseContent(XmlParser.java:1104)
at com.microstar.xml.XmlParser.parseElement(XmlParser.java:924)
at com.microstar.xml.XmlParser.parseDocument(XmlParser.java:481)
at com.microstar.xml.XmlParser.doParse(XmlParser.java:159)
at com.microstar.xml.XmlParser.parse(XmlParser.java:132)
at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1318)
at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1446)
at ptolemy.moml.MoMLChangeRequest._execute(MoMLChangeRequest.java:270)
at ptolemy.kernel.util.ChangeRequest.execute(ChangeRequest.java:139)
at ptolemy.kernel.util.NamedObj.executeChangeRequests(NamedObj.java:697)
at ptolemy.kernel.util.NamedObj.requestChange(NamedObj.java:1668)
at ptolemy.actor.CompositeActor.requestChange(CompositeActor.java:1187)
at
ptolemy.vergil.basic.EditorDropTarget$DTListener.drop(EditorDropTarget.java:409)
at java.awt.dnd.DropTarget.drop(Unknown Source)
at sun.awt.dnd.SunDropTargetContextPeer.processDropMessage(Unknown Source)
at
sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchDropEvent(Unknown
Source)
at
sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent(Unknown
Source)
at sun.awt.dnd.SunDropTargetEvent.dispatch(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processDropTargetEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)


Any idea what wrong am I doing? How should you save your actor once created
and instantiated from Kepler?

Thanks!


On Mon, Mar 23, 2009 at 2:44 AM, subhav mital <mital.subhav at gmail.com>wrote:

> Thanks for that..It worked...Kepler Rocks!
>
> I can share the code or upload it for others to use.
>
> Thanks..
>
>
> On Sun, Mar 22, 2009 at 12:46 AM, Peter Reutemann <fracpete at gmail.com>wrote:
>
>> > The working code for a pop-up box which accepts user values is given
>> below:
>>
>> [...]
>>
>> > 1) Following my question about creating a pop-up box in Kepler which
>> accepts
>> > user input, how should I go about implementing this functionality in
>> Kepler
>> > ? ( The above code works on Eclipse)
>> > 2) I need to create an actor with an output port that takes this input
>> value
>> > from the user and makes it available there. (So as to use this value in
>> > conjunction with other actors such as the Display actor)
>>
>> Just a quick stab at what the fire() method of an actor could look
>> like (not tested whether Kepler likes user interaction):
>>
>>  /**
>>   * Lets the user enter a value and broadcasts it.
>>   *
>>   * @throws IllegalActionException If there is no director.
>>   */
>>  public void fire() throws IllegalActionException {
>>    super.fire();
>>
>>    String reply = JOptionPane.showInputDialog("Please enter value");
>>    if (reply == nul)
>>      return;
>>
>>    output.broadcast(new StringToken(reply));
>>  }
>>
>> Your actor would be derived from ptolemy.actor.lib.Source and the
>> output port would have to be of type STRING (defined in the actor's
>> constructor):
>>    output.setTypeEquals(BaseType.STRING);
>>
>> Cheers, Peter
>> --
>> Peter Reutemann, Dept. of Computer Science, University of Waikato, NZ
>> http://www.cs.waikato.ac.nz/~fracpete/           Ph. +64 (7) 858-5174
>>
>
>
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