View size with autolayout constraints

[sdkdimon]

Hi, i am new to NUI framework and don't know all architecture of project for now, i am can't setup view size, that use autolayout constraints, from .nss theme. Seems to be that functionality not implemented yet. Or i am missing something?
So i add autolayout handling code into NUIViewRenderer. Test it with simple UIButton. It works.

+ (void)renderSize:(UIView*)view withClass:(NSString*)className
{
    NSArray <NSLayoutConstraint *> *viewConstraints = [view constraints];
    BOOL viewUseAutolayout = viewConstraints != nil && viewConstraints;
    if (viewUseAutolayout){
        if ([NUISettings hasProperty:@"height" withClass:className]) {
            CGFloat height = [NUISettings getFloat:@"height" withClass:className];
            //Or use custom identifier string for example NUIHeightConstraint
            NSPredicate *heightConstraintPredicate = [NSPredicate predicateWithFormat:@"self.firstItem == %@ && self.firstAttribute == %d && self.secondAttribute == %d",view,NSLayoutAttributeHeight,NSLayoutAttributeNotAnAttribute];
            NSLayoutConstraint *heightConstraint = [[viewConstraints filteredArrayUsingPredicate:heightConstraintPredicate] firstObject];
            if(heightConstraint != nil){
                [heightConstraint setConstant:height];
            }
        }
        if ([NUISettings hasProperty:@"width" withClass:className]) {
             CGFloat width = [NUISettings getFloat:@"width" withClass:className];
            //Or use custom identifier string for example NUIWidthConstraint
            NSPredicate *widthConstraintPredicate = [NSPredicate predicateWithFormat:@"self.firstItem == %@ && self.firstAttribute == %d && self.secondAttribute == %d",view,NSLayoutAttributeWidth,NSLayoutAttributeNotAnAttribute];
            NSLayoutConstraint *widthConstraint = [[viewConstraints filteredArrayUsingPredicate:widthConstraintPredicate] firstObject];
            if(widthConstraint != nil){
              [widthConstraint setConstant:width];
            }
        }
    } else{
        CGFloat height = view.frame.size.height;
        if ([NUISettings hasProperty:@"height" withClass:className]) {
            height = [NUISettings getFloat:@"height" withClass:className];
        }
        CGFloat width = view.frame.size.width;
        if ([NUISettings hasProperty:@"width" withClass:className]) {
            width = [NUISettings getFloat:@"width" withClass:className];
        }
        if (height != view.frame.size.height || width != view.frame.size.width) {
            view.frame = CGRectMake(view.frame.origin.x, view.frame.origin.y, width, height);
        }
    }
}

How do you think will this solution work properly ?

[Stunner]

NUI does not support sizing its views with auto layout from the .nss file. This library is meant for styling of colors, fonts, borders and other various details of a view and is not responsible for layout of the view hierarchy itself. Please consult the Style Classes for details on what all can be configured with this library.

[sdkdimon]

Thanks.

[yonaskolb]

This works great!
If NUI already has style properties for width and height, I see no reason that it shouldn't set AutoLayout constraints instead of frames if they already exist