tederen_ios/smartRhino/Project/VCModel/ChatMessage/Helper/ViewController/EMTextFieldViewController.m

//
//  EMTextFieldViewController.m
//  ChatDemo-UI3.0
//
//  Created by XieYajie on 2019/1/16.
//  Copyright © 2019 XieYajie. All rights reserved.
//

#import "EMTextFieldViewController.h"

@interface EMTextFieldViewController ()<UITextFieldDelegate>

@property (nonatomic, strong) NSString *originalString;
@property (nonatomic, strong) NSString *placeholder;
@property (nonatomic) BOOL isEditable;

@property (nonatomic, strong) UITextField *textField;

@end

@implementation EMTextFieldViewController

- (instancetype)initWithString:(NSString *)aString
                   placeholder:(NSString *)aPlaceholder
                    isEditable:(BOOL)aIsEditable
{
    self = [super init];
    if (self) {
        _originalString = aString;
        _placeholder = aPlaceholder;
        _isEditable = aIsEditable;
    }
    
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self _setupSubviews];
}

#pragma mark - Subviews

- (void)_setupSubviews
{
    [self addPopBackLeftItem];
    if (self.isEditable) {
        self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"完成" style:UIBarButtonItemStylePlain target:self action:@selector(doneAction)];
    }
    
    self.view.backgroundColor = kColor_LightGray;
    UIView *bgView = [[UIView alloc] init];
    bgView.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:bgView];
    [bgView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view).offset(20);
        make.left.equalTo(self.view);
        make.right.equalTo(self.view);
        make.height.equalTo(@60);
    }];
    
    self.textField = [[UITextField alloc] init];
    self.textField.delegate = self;
    self.textField.backgroundColor = [UIColor clearColor];
    self.textField.font = [UIFont systemFontOfSize:16];
    self.textField.clearButtonMode = UITextFieldViewModeWhileEditing;
    self.textField.returnKeyType = UIReturnKeyDone;
    self.textField.text = self.originalString;
    self.textField.enabled = self.isEditable;
    if (self.isEditable) {
        self.textField.placeholder = self.placeholder;
    }
    [self.view addSubview:self.textField];
    [self.textField mas_makeConstraints:^(MASConstraintMaker *make) {
        make.center.equalTo(bgView);
        make.top.equalTo(bgView).offset(5);
        make.left.equalTo(bgView).offset(10);
    }];
}

#pragma mark - UITextFieldDelegate

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    if ([string isEqualToString:@"\n"]) {
        [textField resignFirstResponder];
        return NO;
    }
    
    return YES;
}

#pragma mark - Action

- (void)doneAction
{
    [self.view endEditing:YES];
    
    BOOL isPop = YES;
    if (_doneCompletion) {
        isPop = _doneCompletion(self.textField.text);
    }
    
    if (isPop) {
        [self.navigationController popViewControllerAnimated:YES];
    }
}

@end