hover and resize window support

[twalpole]

This pull request is an attempt at contributing to issue #832 - It implements an api for hover and resize_window. Unfortunately hover doesnt work with firefox on osx (works properly using chrome via webdriver) due to what appear to be positional bugs in selenium

[twalpole]

@abotalov I'm pretty sure it gets reset for every test in Capybara::SpecHelper::reset! - if I'm wrong about that I'll be happy to store and reset the setting

[abotalov]

1. I think specs to resize_window and hover shouldn't belong to the same group. For example capybara-webkit currently supports resize_window but doesn't support hover without executing script (at least at first glance, I haven't used it)
2. @jnicklas If we support set of window size, we should also support get of size. What about alias:
   window_size=(width, height)
   and method:
   window_size returning 2 values: width and height

Also please take a look at Selenium's Window class. Do we need separate class? I think no but want to point it out

[jnicklas]

Imo, we could combine this with a more sensible alternative to within_window. So we an iterate through open windows, resize them, etc.. The idea of a separate window class is good.

[twalpole]

@jnicklas Moving window related functions to a Capybara::Driver::Window class is fine, but I'm not sure what you're suggesting with within_window. Are you saying that one shouldnt be able to just call resize_window or window.size(xxx,yyy) in the current session to resize the current window?

[abotalov]

First word should be "Move". Sentence case is used in other comments in this file.

[abotalov]

@twalpole Please don't add different features in the same pull request next time when you will do it. It will make review easier

[abotalov]

Could you add YARD comments for size and resize?

[twalpole]

@abotalov There hasnt been agreement on the API yet, I would clean it all up when there is

[twalpole]

@abotalov The only reason they were in the same PR was because they were discussed in the same issue referenced above.

[twalpole]

I dont dealing find dealing with @aboltalov to be worth doing this, closing PR, someone else can add this feature if its wanted

[deivid-rodriguez]

Was this feature ever merged or implemented in any way? Thanks!