create an plugin for "Eye of Gnome"

Eye Of Gnome 3.18.2 is a standard part of Ubuntu 16.04 , installed as "image viewer". [login to view URL] It's agreat and *fast* image viewer, especially when you need to zoom into the photos, I am using it to browse thru, and tag photos of faults for use in report. I would like an plugin like this, let's call it "Report" Plugin config should contain: Subfolder/folder name: "output_folder" (< a folder name, customizable and saved) Describe on/off (checkbox) (<enables to attach a comment before copying) Description 1: "Fault type 1" <(string customizable and saved) Description 2: "Fault type 2" Description 3: "Fault type 3" Description 4: "Fault type 4" Description 5 "Fault type 5" Description 6: "Fault type 6" Plugin should DO: Now imagine the Eye Of Gnome being used to browse photos in a folder. What the plugin does is: if the following button (c,v,b,or n) is pressed while browsing photos, do action: c : copy current image (file) to a subfolder. (retain same filename, just make a copy) v : save current view (the area I may have zoomed at useing mousewheel) to subfolder (with same exif), filename should be added a "c" so if source is [login to view URL] , copied file should be [login to view URL] b: let me mark an area, the selected area, should be saved to a subfolder, retaining EXIF information and adding "c" to filename n: execute a command of my choice (selected in plugin config) with the path+filename of currently displayed file as parameters. However IF "Describe" feature is enabled in settings: then after pressing c,v,b or n, user should be presented with an dialog like: ---------------------------------------------- Fault type 1 Fault type 2 Fault type 3 Fault type 4 Fault type 5 Fault type 6 ------------------------------------------------ The 6 selections preselect last selected choice, selecting by cursor , and pressing enter writes that custom string to "Comment" part of EXIF , then processes according to c,v,b or n, as usual. (Whenever I say "retain EXIF information" it's only important to keep the GPS and time/date/comment information, not the maker notes and such.) I expect the project outcome be open source, so and being available to others is just a plus.