Re: [ve-dev] ContainerManager

[Rich Kulp <richkulp@xxxxxxxxxx>]

Hi,

By default, if you don't supply a constraint,
it uses the component's name as the constraint. You must explicitly set
the constraint to something, such as null.

Rich

cathyscott@xxxxxxxxxx
Sent by: ve-dev-bounces@xxxxxxxxxxx

12/08/2006 09:12 AM

Please respond to
Discussions people developing code for the Visual Editor project        <ve-dev@xxxxxxxxxxx>

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Subject	[ve-dev] ContainerManager

I am extending the VE so that it parses and generates
Groovy SwingBuilder code instead of Java.
As the Groovy SwingBuilder class simply instantiates Swing components the
only VE component that I am customizing is the CodeGen area.
There have been several mentions of a tutorial in this area but so far
I have not seen one - other than CustomPrompter example which is pretty
basic in respect of the helpers/decoders. Is there a more advanced tutorial
or a chance of one soon?

So far I have followed the same workflow as for Java - I parse the groovy
script and look for relevant expressions in the groovy AST. I then use
these to build a Groovy BDM and then a VE model. The VE model is excatly
the same as that used by the Java VE.
So far I have coded DecoderHelpers/mappers that do the equivalent of ConstructorAddDecoderHelper
/ ContainerAddDecoderHelper and SimpleAttributeDecoderHelper.

I can parse simple Groovy SwingBuilder scripts and build a VE model, edit
simple properties and add a component to a JPanel. So far I am just using
specifying a constraint in my source - just simple adds.

I have a problem at present which I need some help to debug.
I have a script that has a JPanel with a JLabel added to it. I can open
the Groovy VE on it and create a model. But then if I edit, say the name
property of the JLabel, I have an error compong from the VM - IllegalArgumentExceptio
in jfc.vm.ContainerManager.addComponentBefore(..).
unknown constraint:fds
where the String fds is the value entered on the PropertySheet for the
JLabel's name property.
I can debug into BeanAWTUtilities.invoke_addComponent(..) and the arguments
being passed to the ComponentManager appear to be
-an REMBeanProxy for the JPanel
-anREMBeanProxy for the JLabel
- null for beforeComponent
-an REMBooleanTypeBeanProxy with value true

The error message is shown on the image for the JLabel on the canvas and
on the status line.
How can I get some inormation about what is happening?
The model and the source code appear to be fine.

Thanks,
Cathy Scott

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