Re: FormLayout & Swixml Marriage

I like it.  It adds a great deal of flexibility to the
tag definition section and handles the convesion
section nicely.  This would be a great way to handle
swing version changes in swixml.  Have a tag file for
1.4 and one for 1.5.  

Add automatic retrieval of these files in jars and you
have a drop in extension.

--- Brian P Michael <[email protected]> wrote:
> Everyone,
> 
> I am looking at the code to see what it would take
> to add an extensible 
> layout system.
> 
> I don't think it would be to hard to complete.
> 
> Changes that would need to occur
> 
> 1) ConstraintsConverter.java class
> 		a) add a set of 
>
registerConstraintHelper("borderlayout",borderConstrainthelper.class)
> 		b) Call those classes based upon which layout it
> used.
> 2) LayoutConverter.java
> 		a) add a set of 
>
RegisterLayoutConverter("borderlayout",borderLayoutConverter.class)
> 		b) add a set of LayoutConverters, one converter
> per class.
> 			Break the routine apart and call the appropriate
> converter class
> 		
> 3) Parser.java
> 		a) Change the single line
> 			    LayoutManager layoutMgr = obj instanceof
> Container ? ( 
> (Container) obj ).getLayout() : null;
> 
> 			I am not sure what would be needed here yet.
> 
> The key to this would be a flexible register
> function that also accepts 
> an XML file.
> 
> E.g. in SwingTagLibrary
> 	Instead of having
> protected void registerTags() {
>      registerTag( "Applet", JApplet.class );
>      registerTag( "Button", JButton.class );
>      registerTag( "ButtonGroup", ButtonGroup.class
> );
>      registerTag( "HBox", XHBox.class );
>      registerTag( "VBox", XVBox.class );
>      registerTag( "Checkbox", JCheckBox.class );
> ........
>    
>
registerLayout("BorderLayout","BorderLayoutConstraints.class",
> 
> "BorderLayoutConverter.class");
>    
>
registerLayout("FlowLayout","FlowLayoutConstraints.class",
> 
> "FlowLayoutConverter.class");
> 
> 
> We would need:
> 	registerTag("tagfile"); or
> 	
> 	SwingEngine("tagfile").
> 
> A default filename of swingTaglibrary.xml could be
> also established.
> 
> Where tagfile is a filename with XML in it.
> E.g.
> 	<tag name="Applet" class="JApplet.class"/>
> 	<tag name="Button" class="JButton.class"/>
> 	<tag name="ButtonGroup" class="ButtonGroup.class"/>
> 	<layout type="BorderLayout" 
> constraintHelper="BorderLayoutConstraints.class" 
> converterClass="BorderLayoutConverter.class"/>
> 	<layout type="FlowLayout" 
> constraintHelper="FlowLayoutConstraints.class" 
> converterClass="FlowLayoutConverter.class"/>
> 	<layout type="GridBagLayout" 
> constraintHelper="GridBagConstraints.class" 
> converterClass="GridBagLayoutConverter.class"/>
> 
> 
> Any comments.
> 
> 
> Sincerely,
> 
> Brian P Michael>
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> 


=====
Gabe Hicks

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