[Webkit-unassigned] [Bug 174076] There is no way for WKWebView to access or download blob subresource contents

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=174076

Chris Dumez <cdumez at apple.com> changed:

           What    |Removed                     |Added
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                 CC|                            |cdumez at apple.com

--- Comment #4 from Chris Dumez <cdumez at apple.com> ---
(In reply to Dan Saunders from comment #3)
> Here is a basic repro:
> https://jsfiddle.net/dsaunders45459/9h5yocvp/
> 
> var data = new Blob(["test"], {
>   type: 'text/plain;charset=utf-8'
> });
> 
> var save_link = document.createElementNS("http://www.w3.org/1999/xhtml",
> "a");
> var object_url = window.URL.createObjectURL(data);
> save_link.href = object_url;
> save_link.download = "testfile.txt";
> var event = new MouseEvent("click");
> save_link.dispatchEvent(event);
> 
> 
> decidePolicyForNavigationAction gets called with
> "blob:https://jsfiddle.net/7d0fb8d6-1a27-4b33-aaa0-9e17e4108b69" URL, but
> there is no way to download that file. The WebKit2 MiniBrowser does
> decisionHandler(WKNavigationActionPolicyAllow) for this request and you can
> see it results in a no-op.

I don't think the WK2 Minibrowsers supports downloads of any kind?

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