As far as I know, the only way to add a file to a file input element without user action, is to intercept QWebPage::chooseFile [http://developer.qt.nokia.com/doc/qt-4.8/qwebpage.html#chooseFile]. This requires creating a click event on the element via Javascript code, which works fine in Qt 4.7. Qt 4.8 however, incorporates a change [https://github.com/WebKit/webkit/commit/931870c11b2a4d0b714eea241db5654d9d8cf6a7] that prevents this, by ignoring click events that are not generated by the user. (See https://bugs.webkit.org/show_bug.cgi?id=47593.) It seems like there ought to be a better way to upload a file, without having to create click events in Javascript code, which would mean that the above would not be a problem.
We were able to trigger the events required to open the file dialog in capybara-webkit here: http://git.io/izIfYA. This worked with Qt 4.8 but no longer works in Qt 5.0. In Qt 5.0, we must trigger native mouse events, which is quite cumbersome as it requires finding the element position on screen, scrolling it into view, and then triggering the event. In either case, we must still have a way to trigger the expected mouse events, in the event that a developer using capybara-webkit is testing that those events are being triggered. However, a programmatic method for uploading files would be handy, seeing as all current approaches seem a bit brittle.
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