Plupload not working in webview (Android/iOS mobile)

[caycewilliams]

Hi, whoever comes across this I hope this helps you. Recently I had a problem with plupload where it was not working in a webview. A webview opens when you click on a link in an app and they open the link not in a browser like chrome/safari but in the app.

Versions used: Plupload 2.3.6/Moxie 1.5.7 + DatingScript

The problem was because webview doesn't work with <input type="file" /> when the accept parameter has extensions like "gif,png,jpg". It either needs to be excluded, or have the correct mime types like image/*.

Here is what my plupload javascript with the issue (truncated from php for brevity):

var uploader = new plupload.Uploader({
	        filters : {
	                         mime_types: [
	 				            {title : "Files", extensions : "gif,png,jpg"}
	                         ]
	        }
}

Here is how I fixed the issue,
I removed the mime_types filter (This makes the file input exclude the accept parameter) and added my own _extensions filter to validate the file type.

var uploader = new plupload.Uploader({
	        filters : {
		              _extensions: "gif,png,jpg"
	        }
}

plupload.addFileFilter('_extensions', function(maxSize, file, cb) {
	var fileType = file.type;
	//Make sure file type is valid
	if (!fileType || !fileType.includes('/')) {
		cb(false);
		return;
	}
	//Get extension of file
	var type = fileType.split('/')[1];
	//Get all valid extensions as array
	var exts = 'gif,png,jpg'.split(',');
	//If valid extensions don't include this file type, throw an error
	if (!exts.includes(type)) {
		this.trigger('Error', {
			code: 'EXT_ERROR',
			message: plupload.translate('Not a valid file type: ') + 'gif,png,jpg',
			file: file
		});
		cb(false);
	} else {
		cb(true);
	}
});

I'm not sure how to go about this a better way since the default mime_types filter in plupload doesn't take "image/*". If the maintainer sees this, can you please let me know if this is an acceptable solution, and if there is a patch that can be made for this?