Not sure the title makes sense.
I have built a plugin that installs my custom module and sets my source directories. Inside these source directories I have two files that go together. A.file and A.file.xml A.file is the source code, and A.file.xml is a metadata configuration file for the source file. I would like to click on the A.file and open an editor that has 2 tabs. The source tab, will show the contents of A.file and allow me to edit it. The metadata tab will show my customer editor which is just a properties type viewer that will save the contents to A.file.xml.
I'm just not sure where/how to look to find examples of doing something like this. If anyone has any info that would be greatly appreciated.