I'm developing a Chemical drawing tool and have been progressing steadily with a lot of difficulties. My technology stack is Java 8, GWT 2.8.2, GMD 2.x, Eclipse Photon, running on a MacBook Pro, and Chrome | Firefox | Opera for testing. A limited functioning pilot is running at http://peruselab.com.
I just ran into a trouble that I couldn't figure out on my own. Below are the relevant snippets of code that's causing trouble. The call (1) ActionHandlerMap.getHandler(action) is expected to return an instance of PeruseEventHandler. I expect the sequence of execution to be 1, 2, & 3. However, upon returning from 2 (verified with the debugger) I see the control going to 4 (screen clip 1) followed by throwing an exception (screen clip 2). Any idea what could be wrong? Your help will be greatly appreciated.
Screen clip 1
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