What's your aim making this here? Is it mostly just to show the sub-components of a PDF? Because if you added more support for Javascript it would fill a need (IDK how niche, lol.)
When I was trying to improve my resume I added some custom Javascript to the PDF using Adobe Reader and what I learned is even Adobe's product makes it painful. Basically the process was something like this:
1. You add a script that loads at certain sections in the document. Let's say this is the equivalent of document.load.
2. To do this there's a field to add the full script which must be typed up correctly beforehand. Only after its added do you know it works and every syntax error requires you to edit your previous script, delete the script you added, and hope your new version works.
3. There's really no interactive way to work with the scripts. Their 'debugger' has almost no features at all or hints of syntax errors. Even getting a script to run in it requires finding the right combination of key strokes in a 1000+ line document on PDF scripting.
The programming itself though is quite simple. It's just Javascript with a different DOM and security model. You can still do event-based programming and write powerful programs - all running inside a PDF. But it will only run in firefox (using PDF.js I think) and Adobe reader (for the JS support.) I just thought I'd tell you that writing these JS programs in PDFs (1) actually seems to have a lot of unrealized potential and (2) the tooling to do so is terrible. So with better JS support it would be useful.
When I was trying to improve my resume I added some custom Javascript to the PDF using Adobe Reader and what I learned is even Adobe's product makes it painful. Basically the process was something like this:
1. You add a script that loads at certain sections in the document. Let's say this is the equivalent of document.load.
2. To do this there's a field to add the full script which must be typed up correctly beforehand. Only after its added do you know it works and every syntax error requires you to edit your previous script, delete the script you added, and hope your new version works.
3. There's really no interactive way to work with the scripts. Their 'debugger' has almost no features at all or hints of syntax errors. Even getting a script to run in it requires finding the right combination of key strokes in a 1000+ line document on PDF scripting.
The programming itself though is quite simple. It's just Javascript with a different DOM and security model. You can still do event-based programming and write powerful programs - all running inside a PDF. But it will only run in firefox (using PDF.js I think) and Adobe reader (for the JS support.) I just thought I'd tell you that writing these JS programs in PDFs (1) actually seems to have a lot of unrealized potential and (2) the tooling to do so is terrible. So with better JS support it would be useful.