Re: FormLayout & Swixml Marriage

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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