Tag Archives: diagram

After investigating the complex interactions that occur with the a title=”GEF Internals Part 1 – Mouse Interaction and the Selection Tool” href=”http://www.vainolo.com/2012/01/01/gef-internals-part-1-mouse-interaction-and-the-selection-tool/”selection tool in my previous post/a, we will now focus on a simpler case, the creation tool. When the mouse moves over the canvas, the codeLightweightSystem/code system catches the mouse move event and forwards it to the codeDomainEventDispatched/code. If the event was not previously captured by the domain codeDomainEventDispatcher/code executes direct codedraw2d/code interaction. I am not completely sure what “captured by the domain” means, but for example when there is a mouse click, which is translated into a codemouseDown/code … Continue reading →

There are some explanations on the net on how GEF works (see here ) but I have not found a good description on how GEF really works, so I will try to unravel the secret and post it here for the world to know. My investigation began when I found that although GEF EditPolicy instances are installed in the EditPart using a key, this key was never used (well, everything works even if I changed all the keys to “chukumuku”). I started reading more and mode code and was fascinated about how the framework works. So here it goes, what … Continue reading →