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Is there a way to do custom resource loading in the Windows WebView2 component? Like a custom URL scheme, for instance?

I'm looking into using the WebView2 component for rendering some UI things on Windows, and I have a question about resource loading: for loading "normal" resources (i.e. HTML, CSS, images, JavaScript, whatever), the component mostly takes care of handling the loading of those resources itself. But I wonder if there is a way to hook into that loading process and control it yourself with WebView2?
As an example: say you want to load an image that is procedurally generated on native side of the WebView2, i.e. it is not in a file or on a server. How would you do that? Another example would be if you stored all your resources in a zip file or a SQLite database or something like that, and you wanted the WebView2 component to load resources directly from it (with you writing the "bridge" code yourself), how would you do that?
The reason I'm asking is because on macOS, WKWebView provides exactly this functionality by allowing you to create custom url schemes and hooking up handlers to them. This is exactly what I want, and it allows you to do something like this in your HTML:
<script type="text/javascript" src="my-scheme://test.js"/>
And on the Objective-C side, you can do a thing like this (leaving out boilerplate for hooking up my-scheme to this handler, this is the meat of the code for handling the response):
const char* data = "function testFunction() { return 18; }";
[task didReceiveResponse: [[NSURLResponse alloc]
initWithURL: task.request.URL
MIMEType: #"text/javascript"
expectedContentLength: strlen(data)
textEncodingName: #"ASCII"]];
[task didReceiveData: [NSData
dataWithBytes: data
length:strlen(data)]];
[task didFinish];
I.e. by registering the custom url scheme handler, I could send over my C string there as a JavaScript file. It doesn't have to be a hard-coded C string, obviously, as I mentioned the most relevant uses for me would be to provide procedurally generated resources, as well as loading things that are not necessarily stored as files (or on a web server). How would you do this with WebView2?

One way I have sent any type of file from native code to a browser is by converting the file to Base64 and then sending it to the browser. In the case of WebView2 you could use ExecuteScriptAsync. Once the Base64 string is received you could have javascript code (which you have previously injected) to convert it into a blob/file and then you can add it to any part of the DOM you want.

xml data from API has multiple undefined name spaces - how to use xslt to display it in html?

I am using a REST api to get XML data from a database and am trying to display it in an html format using xslt. Unfortunately the xml data comes back with a few namespaces that are not defined. I can get the style sheet to work just fine on a local copy of the data if I strip the namespaces or define them. Striping the name spaces feels like a hack and no the correct way to do this.
this is essentially an example of the data I get back:
<root>
<entity:Entity ns1:atrib="foo">
<g:Value>foo1</g:value>
<g:Name>fooName</g:Name>
</entity:Entity>
xmlhttprequest methods in JS to get this information and XSLTProcessor to transform it then add it into a . It's not displaying the transformed information and i'm 100% positive it's the namespaces that is causing the issue.
I've googled everything I can think of with no luck. Road blocks like this are almost always due to me missing something fundamental.

XSLT will only operate on XML that is well-formed, and it requires all namespaces to be declared. If you want to process this data you should ideally fix it at source; if you can't do that you need to repair it before processing.
There are some XML parsers that allow you to process non-namespace-aware XML, and you could use such a parser as the basis of your repair tool, but this is such an unusual requirement that I'll have to leave you to research how to do that yourself.

Rendering raw pdf data from web service using PDF.js (specify src) in angular ionic app

So here is what I am trying to do. I am getting raw pdf data from a wb service. The data looks something like this.
I get this data in the $http.success() in a string format. I wanted to show this data using the PDF.js library in my angular/ionic code. Is there any way to correct supply this pdf string data as input for the PDF.js library
I also found this angular directive that eases my use of PDF.js in angular code.
https://github.com/akrennmair/ng-pdfviewer
I also tried to use this enhancement as a way to specify the data URI's as input. But I couldn't find a good way of converting my input to data URI format (base 64 encoding).
https://github.com/akrennmair/ng-pdfviewer/pull/15
Any help on this will be highly appreciated. Please provide explanation with code if possible.

Force Chrome to show Json response formatted as tree structure

I can make my app to "force" Chrome (v 39.0.2171.99 m) to show http response as Json (instead of XML).
How do I get the Json in a tree structure (instead of a string)?
Checking the Preview tab in dev tools doesn't work for me.
I could paste the Json string into JsonLint, but I want to know a more direct route, if there is one.

I've been using this extension (It's called JSON Viewer and the source is available at github) for years, it works great.
I don't know who's the developer is but if he ever reads this: Thanks for taking the time to develop such a timesaving tool!

How to parse html that includes javascript code

How does one parse html documents which make heavy use of javascript? I know there are a few libraries in python which can parse static xml/html files and I'm basically looking for a programme or library (or even firefox plugin) which reads html+javascript, executes the javascript bit and outputs html code without javascript so it would look identical if displayed in a browser.
As a simple example
link
should be replaced by the appropriate value the javascript function returns, e.g.
link
A more complex example would be a saved facebook html page which is littered with loads of javascript code.
Probably related to
How to "execute" HTML+Javascript page with Node.js
but do I really need Node.js and JSDOM? Also slightly related is
Python library for rendering HTML and javascript
but I'm not interested in rendering just the pure html output.

You can use Selenium with python as detailed here
Example:
import xmlrpclib
# Make an object to represent the XML-RPC server.
server_url = "http://localhost:8080/selenium-driver/RPC2"
app = xmlrpclib.ServerProxy(server_url)
# Bump timeout a little higher than the default 5 seconds
app.setTimeout(15)
import os
os.system('start run_firefox.bat')
print app.open('http://localhost:8080/AUT/000000A/http/www.amazon.com/')
print app.verifyTitle('Amazon.com: Welcome')
print app.verifySelected('url', 'All Products')
print app.select('url', 'Books')
print app.verifySelected('url', 'Books')
print app.verifyValue('field-keywords', '')
print app.type('field-keywords', 'Python Cookbook')
print app.clickAndWait('Go')
print app.verifyTitle('Amazon.com: Books Search Results: Python Cookbook')
print app.verifyTextPresent('Python Cookbook', '')
print app.verifyTextPresent('Alex Martellibot, David Ascher', '')
print app.testComplete()

From Mozilla Gecko FAQ:
Q. Can you invoke the Gecko engine from a Unix shell script? Could you send it HTML and get back a web page that might be sent to the printer?
A. Not really supported; you can probably get something close to what you want by writing your own application using Gecko's embedding APIs, though. Note that it's currently not possible to print without a widget on the screen to render to.
Embedding Gecko in a program that outputs what you want may be way too heavy, but at least your output will be as good as it gets.

PhantomJS can be loaded using Selenium
$ ipython
In [1]: from selenium import webdriver
In [2]: browser=webdriver.PhantomJS()
In [3]: browser.get('http://seleniumhq.org/')
In [4]: browser.title
Out[4]: u'Selenium - Web Browser Automation'