whenever I click on a drag-and-dropped PDF resource file, the PDF opens up inside a fully-functioning pop-up window. All without leaving the Moodle page.
Figure 1. This window pops out after the user has clicked on a "previously dragged-and-dropped-into-the-coursepage" PDF resource file.
Figure 2. The pop-up window is fully-functioning.
Figure 3. An animated spinner image (rubik's cube) to indicate loading time.
Figure 4. I can begin reading the PDF document's contents even though the entire document has not finished loading.
I have tested it on multiple platforms: iPad, Mac, PC and Android. All working.