luci-base: luci.js: support registering request progress handlers
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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@ -378,6 +378,9 @@
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contenttype = opt.headers[header];
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}
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if ('progress' in opt && 'upload' in opt.xhr)
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opt.xhr.upload.addEventListener('progress', opt.progress);
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if (contenttype != null)
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opt.xhr.setRequestHeader('Content-Type', contenttype);
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