//
//  IQUIViewController+Additions.swift
// https://github.com/hackiftekhar/IQKeyboardManager
// Copyright (c) 2013-16 Iftekhar Qurashi.
//
// 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 UIKit

private var kIQLayoutGuideConstraint = "kIQLayoutGuideConstraint"

@objc public extension UIViewController {

    /**
     This method is provided to override by viewController's if the library lifts a viewController which you doesn't want to lift . This may happen if you have implemented side menu feature in your app and the library try to lift the side menu controller. Overriding this method in side menu class to return correct controller should fix the problem.
    */
    func parentIQContainerViewController() -> UIViewController? {
        return self
    }
    
    /**
    To set customized distance from keyboard for textField/textView. Can't be less than zero
     
     @deprecated    Due to change in core-logic of handling distance between textField and keyboard distance, this layout contraint tweak is no longer needed and things will just work out of the box regardless of constraint pinned with safeArea/layoutGuide/superview
    */
    @available(*, deprecated, message: "Due to change in core-logic of handling distance between textField and keyboard distance, this layout contraint tweak is no longer needed and things will just work out of the box regardless of constraint pinned with safeArea/layoutGuide/superview.")
    @IBOutlet @objc var IQLayoutGuideConstraint: NSLayoutConstraint? {
        get {
            
            return objc_getAssociatedObject(self, &kIQLayoutGuideConstraint) as? NSLayoutConstraint
        }

        set(newValue) {
            objc_setAssociatedObject(self, &kIQLayoutGuideConstraint, newValue, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
        }
    }
}
