//
//  IBTextField.swift
//  MTP2_iOS
//
//  Created by zhongyuan on 2018/3/17.
//  Copyright © 2018年 zhongyuan.All rights reserved.
//

import UIKit

@IBDesignable
class IBTextField: UITextField {
    /// 集成IBView 参数
    @IBInspectable var 圆角偏移量: CGFloat = 0.0
    @IBInspectable var 圆角倍数: CGPoint = CGPoint.init(x: 0, y: 0)
    @IBInspectable var maskToBounds: Bool = false
    @IBInspectable var borderColor: UIColor = UIColor.clear
    @IBInspectable var borderWidth: CGFloat = 0.0
    /// IBTextField参数
    @IBInspectable var insetLeft: CGFloat = 0.0
    @IBInspectable var insetRight: CGFloat = 0.0
    @IBInspectable var isNeedRightView: Bool = false {
        didSet {
            if !isNeedRightView {
                rightView = nil
                rightViewMode = .always
                return
            }
            rightView = UIImageView(image: rightImage)
            (rightView as? UIImageView)?.contentMode = .scaleAspectFit
            rightViewMode = .always
        }
    }
    @IBInspectable var rightImage: UIImage? = UIImage(named: "pull") {
        didSet {
            if !isNeedRightView { return }
            
            rightView = UIImageView(image: rightImage)
            rightViewMode = .always
        }
    }
    @IBInspectable var rightImageRightInsert: CGFloat = 0.0

    private static let checkValueBlock = {(rect: CGRect,target: IBTextField) -> CGRect in
        guard let l:Double = target.value(forKey:"insetLeft") as? Double,
            let r:Double = target.value(forKey:"insetRight") as? Double else { return CGRect.init() }
        return CGRect.init(x: CGFloat(l),
                           y: 0,
                           width: rect.size.width - CGFloat(l) - CGFloat(r),
                           height: rect.size.height)
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()

        IBView.refreshIBEffect(view: self)
    }

    /// UITextField 文字与输入框的距离
    override func textRect(forBounds bounds:CGRect) -> CGRect {
        let rect:CGRect = super.textRect(forBounds: bounds)
        return IBTextField.checkValueBlock(rect, self)
    }

    /// 控制文本的位置
    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        let rect:CGRect = super.editingRect(forBounds: bounds)
        return IBTextField.checkValueBlock(rect, self)
    }
    
    /// 控制rightView的距离
    override func rightViewRect(forBounds bounds: CGRect) -> CGRect {
        var rect:CGRect = super.rightViewRect(forBounds: bounds)
        rect.origin.x -= rightImageRightInsert
        return rect
    }
}