Bug 154447 – select box not show popup in phantomjs

• Status: RESOLVED
• Resolution: INVALID
• Component: Forms

[james]

When using phantomjs 2.1.1 to render form, select box never popup it's options when clicked, please see Issue: https://github.com/ariya/phantomjs/issues/14017

A maintainer said below:

> select boxes' pop-up menus are getting drawn in a different way from normal page contents and therefore are getting left out of the rendering (possibly they are never drawn at all in a 'headless' configuration)


I've double checked the click event surely sent to the select, and using keyboard ArrowDown key can switch to second options. So it's not the event sending problem.

Phantomjs userAgent is:

"Mozilla/5.0 (Unknown; Linux i686) AppleWebKit/538.1 (KHTML, like Gecko) PhantomJS/2.1.1 Safari/538.1"

[Alexey Proskuryakov]

Looks like phantomjs is based on QtWebKit, which is not one of the ports supported at webkit.org. Please see <https://trac.webkit.org/wiki/BuildingQtOnLinux>.

The below comment from phantomjs issue discussion seems like a good guess to me, although in this case, this becomes a phantomjs bug. Since it is phantomjs that advertises offscreen drawing capability, it is that project's responsibility to make it work.

> My educated guess as to the root cause of the problem is that select boxes'
> pop-up menus are getting drawn in a different way from normal page contents
> and therefore are getting left out of the rendering (possibly they are never
> drawn at all in a 'headless' configuration).

Mac and iOS ports work like that by design, so Qt may do the same.