[Webkit-unassigned] [Bug 75242] New: [WK2] add new APIs on WKURLResponse for getting content type and expected content length

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=75242

           Summary: [WK2] add new APIs on WKURLResponse for getting
                    content type and expected content length
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Enhancement
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: keunsoon.lee at samsung.com


Hi, 

This is a suggestion for WK2 API, not a bug.
I think it would be useful to add new APIs to obtain content type and expected content length on WKURLResponse.

Here are some specific use cases.

For content type;
application can use this to determine policy when receiving decidePolicyForResponse for WKPagePolicyClient.
For example, application can extract a MIMEType from WKURLResponseRef, and decide to download for some specific MIME type instead of calling WKFramePolicyListenerUse().

For content length;
application can use this to draw progress bar when getting callbacks for WKContextDownloadClient.
Application cannot know the downloaded percentage unless it obtains expected content length.

I think these APIs have port-widely common usage, so suggested them to add WK2 API.

By the way, to activate these APIs, all port should add encode/decode for ResourceResponse's mimeType() and expectedContentLength() on each WebCoreArgumentCoderXXX.
If you think this patch is acceptable, I'll take care of it.

Thank you.

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