Here is a list of all files with brief descriptions:

[detail level 123456]

▼ NS3-GUI
▼ src
▼ main
▼ Dialogs
Dialog_ConfigureClient.java
Dialog_ConfigureServer.java
Dialog_Connection.java
Dialog_DefaultLinkConfig.java
Dialog_DefaultNetworkConfig.java
Dialog_DefaultWiFiLinkConfig.java
Dialog_Helper.java
Dialog_Link.java
Dialog_Network.java
Dialog_outputFileChooser.java
Dialog_WiFiLink.java
▼ FileHandler
CodeGenerator.java
FileReaderWriter.java
▼ GuiRenderers
CanvasPainter.java
CsmaLinkPainter.java
NodePainter.java
P2pLinkPainter.java
TopologyPainter.java
WifiLinkPainter.java
▼ Helpers
ApplicationSettingsHelper.java
LoggingHelper.java
PlaceHolderHelper.java
▼ Ns3Objects
▼ Devices
Device.java
▼ Links
CSMA.java
NetworkLink.java
P2P.java
WIFI.java
▼ Netoworks
Network.java
▼ StatusHelper
LinkType.java
LogLevel.java
ToolStatus.java
Home_Screen.java