Browsing and searching source code of applications written using a GUI framework

Nowadays, applications are typically written using an object-oriented GUI framework. We explore the possibility of using the GUI of such applications to guide browsing and search of their source code. Such a tool would be helpful for software maintenance and reuse, particularly when the application source is unfamiliar. Generally, the GUI framework is in control and makes calls into the application code to handle various events, thus providing fundamental entry points into the application code, namely the callbacks. Of course, this is a property of frameworks in general but GUI frameworks have one additional advantage: the GUI is visible to the end-user and contains text messages describing what the application can do. Thus, we have an explicit connection between an informal specification fragment visible in the GUI and its precise entry point to the implementation in the source. We demonstrate our approach, which takes advantage of this connection, on KDE applications written using the KDE GUI framework.