platform-ios/RainbowPlanet/RainbowPlanet/Tools/CommentInputView/CommentInputView.swift

//
//  CommentInputView.swift
//  RainbowPlanet
//
//  Created by 南鑫林 on 2019/7/8.
//  Copyright © 2019 RainbowPlanet. All rights reserved.
//

import UIKit
import IQKeyboardManagerSwift
import RxSwift

class CommentInputView: UIView {
    
    let disposeBag = DisposeBag()
    /// 上下间距
    let topOrBottomEdge : CGFloat = 10
    /// 输入框宽度
    let inputTextViewWidth = kScreenWidth - 14 - 89
    /// 键盘的Y
    var keyboardH : CGFloat = 0
    /// 是否隐藏View
    var inputViewIsHidden : Bool = false {
        didSet {
            
        }
    }
    /// 添加视图的高度
    var screenHeight : CGFloat = 0
    
    
    typealias CommentInputViewClosure = (String) -> ()
    var commentInputViewClosure :CommentInputViewClosure?
    
    override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    /// 初始化是否隐藏
    init(isHidden:Bool,height:CGFloat = kScreenHeight) {
        self.init()
        inputViewIsHidden = isHidden
        screenHeight = height
        if isHidden {
            self.frame = CGRect(x: 0, y: screenHeight, width: kScreenWidth, height: kSafeTabBarHeight+48)
        } else {
            self.frame = CGRect(x: 0, y: screenHeight-kSafeTabBarHeight-48, width: kScreenWidth, height: kSafeTabBarHeight+48)
        }
        setupViews()
        setupData()
    }
    
    func setupViews() {
        self.backgroundColor = UIColor.white
        addSubview(inputTextView)
        addSubview(sendButton)
    }
    lazy var inputTextView: IQTextView = {
        let inputTextView = IQTextView(frame: CGRect(x: 14, y: topOrBottomEdge, width: inputTextViewWidth, height: 30))
        inputTextView.backgroundColor = kf0f0f0Color
        inputTextView.font = kRegularFont14
        inputTextView.layoutManager.allowsNonContiguousLayout = false
        inputTextView.enablesReturnKeyAutomatically = true
        inputTextView.scrollsToTop = false
        inputTextView.textContainerInset = UIEdgeInsets(top: 5, left: 15, bottom: 5, right: 15)
        inputTextView.textContainer.lineFragmentPadding = 0
        inputTextView.layer.cornerRadius = 14
        inputTextView.layer.masksToBounds = true
        inputTextView.placeholder = "添加评论...";
        inputTextView.delegate = self
        inputTextView.tintColor = kThemeColor
        return inputTextView
    }()
    
    lazy var sendButton: UIButton = {
        let sendButton = UIButton(type: UIButton.ButtonType.custom)
        sendButton.frame = CGRect(x: kScreenWidth - 14 - 60, y: 11, width: 60, height: 28)
        sendButton.setTitle("发送", for: UIControl.State.normal)
        sendButton.setBackgroundImage(UIImage.imageWithColor(color: kThemeColor), for: UIControl.State.normal)
        sendButton.setBackgroundImage(UIImage.imageWithColor(color: kd8d8d8Color), for: UIControl.State.disabled)
        sendButton.titleLabel?.font = kRegularFont14
        sendButton.layer.cornerRadius = 14;
        sendButton.layer.masksToBounds = true
        sendButton.isEnabled = false
        return sendButton
    }()
    
    func setupData() {
        //监听键盘弹出通知
        _ = NotificationCenter.default.rx
            .notification(UIResponder.keyboardWillShowNotification)
            .takeUntil(self.rx.deallocated) //页面销毁自动移除通知监听
            .subscribe(onNext: { [weak self] notification in
                let userInfo = notification.userInfo
                // 动画的持续时间
                let duration = userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? Double
                // 键盘的frame
                let keyboardFrame = userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect
                self?.keyboardH = (keyboardFrame?.size.height)!

                if self?.inputTextView.text.count ?? 0 > 0 {
                    self?.sendButton.isEnabled = true
                }else {
                    self?.sendButton.isEnabled = false
                }
                UIView.animate(withDuration: duration ?? 0, animations: {
                    self?.y = (self?.screenHeight)! - (keyboardFrame?.size.height)! - (self?.height)! + kSafeTabBarHeight
                })
            })
        
        
        
        //监听键盘隐藏通知
        _ = NotificationCenter.default.rx
            .notification(UIResponder.keyboardWillHideNotification)
            .takeUntil(self.rx.deallocated) //页面销毁自动移除通知监听
            .subscribe(onNext: { [weak self] notification in
                let userInfo = notification.userInfo
                // 动画的持续时间
                let duration = userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? Double
                // 键盘的frame
                let keyboardFrame = userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect
                self?.keyboardH = (keyboardFrame?.size.height)!
                self?.inputTextView.placeholder = "添加评论...";
                self?.sendButton.isEnabled = false
                if let keyboardWillHideNotificationClosure = self?.keyboardWillHideNotificationClosure {
                    keyboardWillHideNotificationClosure()
                }
                UIView.animate(withDuration: duration ?? 0, animations: {
                    if self?.inputViewIsHidden ?? true {
                        self?.y = (self?.screenHeight)!
                    }else {
                        self?.y = (self?.screenHeight)! - (self?.height)!
                        
                    }
                })
            })
        //发送
        sendButton.rx.tap.subscribe(onNext: {[weak self] _ in
            if let commentInputViewClosure = self?.commentInputViewClosure {
                commentInputViewClosure(self?.inputTextView.text ?? "")
            }
        }).disposed(by: disposeBag)

    }
    
    /// 发送成功的回调
    func sendSuccess() {
        self.inputTextView.text = ""
        self.inputTextView.height = 30
        self.height = 48 + kSafeTabBarHeight
        self.y = screenHeight - self.height
        self.endEditing(true)
    }
    
    typealias KeyboardWillHideNotificationClosure = () -> Void
    var  keyboardWillHideNotificationClosure : KeyboardWillHideNotificationClosure?
}

extension CommentInputView : UITextViewDelegate {
    
    func textViewDidChange(_ textView: UITextView) {
        TextLimitTool.restrictionInputTextView(inputTextView, maxNumber: 150)
        if  inputTextView.text.count > 0 {
            sendButton.isEnabled = true
        }else {
            sendButton.isEnabled = false
        }
        let contentSizeH = self.inputTextView.contentSize.height
        if (contentSizeH > 30) {
            textView.height = contentSizeH
        }else {
            textView.height = 30
        }
        self.height = (self.inputTextView.height) + kSafeTabBarHeight + 20
        self.y = screenHeight - (self.keyboardH) - (self.inputTextView.height) - 20
    }
}