confused in creating openfire plugin

i want to create a plugin in openfire and i have read the guide at http://community.igniterealtime.org/docs/DOC-1200

but m confused , do i need to download the whole source code of openfire from svn before i develop a plugin for openfire ??

what should i do , here are the step that i am preassuming , please check it and guide me accordingly

1) create a directory stucture as java project in eclipse

2) import openfire.jar files for the plugin api

3) build the plugin folder

4) copy the folder into the server's plugin folder