c9dc85cd0d
events the frame receives, and a flag to toggle whether to add the listeners. Make sure to dispose of the frame graphics context if it becomes invalid. Removed code to prevent adding a frame participant more than once since the observer list now handles that for us. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2148 542714f4-19e9-0310-aa3c-eee0fc999fb1