//
// RECommonFunctions.m
// REFrostedViewController
//
// Copyright (c) 2013 Roman Efimov (https://github.com/romaonthego)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//

#import "RECommonFunctions.h"
#import <UIKit/UIKit.h>

BOOL REFrostedViewControllerUIKitIsFlatMode(void)
{
    static BOOL isUIKitFlatMode = NO;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        if (floor(NSFoundationVersionNumber) > 993.0) {
            // If your app is running in legacy mode, tintColor will be nil - else it must be set to some color.
            if (UIApplication.sharedApplication.keyWindow) {
                isUIKitFlatMode = [UIApplication.sharedApplication.delegate.window respondsToSelector:@selector(tintColor)];
            } else {
                // Possible that we're called early on (e.g. when used in a Storyboard). Adapt and use a temporary window.
                isUIKitFlatMode = [[UIWindow new] respondsToSelector:@selector(tintColor)];
            }
        }
    });
    return isUIKitFlatMode;
}