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Popup menus and mouse-sensitive graphics w/CL-HTTP
I am porting a Common Lisp system from a Symbolics GUI to a WWW GUI using
CL-HTTP. The Symbolics code produced screens that typically combined some
simple graphs (made up of labelled nodes and links) with text. Some text
and graphic elements, when mouse-selected, opened pop-up menus with action
options (e.g. add additional link to this node).
Do you have any suggestions on the easiest way to reproduce this UI
metaphor with CL-HTTP? Some specific questions:
€ HTML doesn't seem to support pop-up menus. Is my only option to create a
new page with the menu options as anchors? Will CL-HTTP support Java
applets or the like that could do the job?
€ I understand that I can use bitmaps to produce the effect of
mouse-sensitive graph components, but will I have to write my own code to
produce the bitmaps and determine which element a user has selected? Is
there any high-level Lisp code available that does this already?
I'd appreciate any pointers you may have.
Thanks,
Mark Klein
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Mark Klein, PhD
Information Systems Department
The Applied Research Laboratory
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