Working on AutoComplete TextArea:

• There doesn’t appear to be any open source (or even publicly visible closed source) text areas with an auto complete popup
• There are at least 4 auto complete text input components that function a great deal like ComboBoxes
• The best of which seems to be: http://web.me.com/hillelcoren/Site/Demo.html
• I’ve started using this example to create a custom TextArea that will have similar behavior
• I estimate this component will be around 1500 lines and take at least a week (433 lines so far)

After that’s done there are 2 parts left I can think of:

• Figure out when to open the autocomplete popup (may depend on language).  For example, the Flex one opens after a period, colon, typing “override public function”, hitting ctrl-space, and probably other special occasions.
• Figure out what to use as the dataprovider (auto complete insert options) which will definitely be language and possibly context specific