How to create my own XML Editor with design tab and source tab? [closed]

[frOst.]

Following is an xml Editor with design tab and source tab:http://publib.boulder.ibm.com/infoc...m.ibm.etools.xsdeditor.doc/images/ncalxml.gifI'd like to create such an editor using SWT, that is, I'd like to develop a Eclipse plugin: XML Editor. I hope the XML editor includes a design tab and a source tab, just like the Screenshot above. and I'd like to develop the xml editor using java swt. And I need a tutorial about developing xml editor.