UISlider, UIToolbar and UIButton

[savage7]

UISlider
added implementation of UISlider
added all style able properties with exception of:

• (void)setThumbImage:(UIImage *)image forState:(UIControlState)state;
• (void)setMinimumTrackImage:(UIImage *)image forState:(UIControlState)state;
• (void)setMaximumTrackImage:(UIImage *)image forState:(UIControlState)state;

UIToobar
added implementation of UIToobar

UIButton:
added disabled state for background image to UIButton renderer

[tombenner]

This is great! Many thanks for adding these!

I've added a couple more properties to Slider and Toolbar and renamed some of the properties slightly so that they're more consistent with the rest of NUI (e.g. renamed background-image-portrait-top to background-image-top, because it uses UIBarMetricsDefault, which is used for both portrait and landscape unless landscape is specified).

Eventually, the style grammar for setting barMetrics will look more like media queries (#3), which will remove the need for all of these additional properties and make this all a little cleaner.

[savage7]

Do you have a better idea for all this UIControllState* rather than hardcoded implementation for all variants?

I would prefer something like this:
background-image: image.png normal;

[tombenner]

Agreed about trying to avoid hardcoded implementation of those. I was thinking that pseudo-classes (#39) would be a pretty natural way to handle them (similar to a:hover in CSS-world).