tederen_ios/smartRhino/Project/VCModel/ChatMessage/Helper/ViewController/SearchController/EMSearchViewController.m

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

#import "EMSearchViewController.h"

@interface EMSearchViewController ()

@end

@implementation EMSearchViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    self.searchBar = [[EMSearchBar alloc] init];
    self.searchBar.delegate = self;
    [self.view addSubview:self.searchBar];
    [self.searchBar mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view);
        make.left.equalTo(self.view);
        make.right.equalTo(self.view);
        make.height.equalTo(@50);
    }];
    
    self.tableView.rowHeight = 60;
    [self.tableView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.searchBar.mas_bottom);
        make.left.equalTo(self.view);
        make.right.equalTo(self.view);
        make.bottom.equalTo(self.view);
    }];
    
    self.searchResults = [[NSMutableArray alloc] init];
    self.searchResultTableView = [[UITableView alloc] init];
    self.searchResultTableView.tableFooterView = [[UIView alloc] init];
    self.searchResultTableView.rowHeight = self.tableView.rowHeight;
    self.searchResultTableView.delegate = self;
    self.searchResultTableView.dataSource = self;
}

- (void)dealloc
{
    [[EMRealtimeSearch shared] realtimeSearchStop];
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

#pragma mark - EMSearchBarDelegate

- (void)searchBarShouldBeginEditing:(EMSearchBar *)searchBar
{
    if (!self.isSearching) {
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillShow:) name:UIKeyboardWillShowNotification object:nil];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillHide:) name:UIKeyboardWillHideNotification object:nil];
        
        self.isSearching = YES;
        [self.view addSubview:self.searchResultTableView];
        [self.searchResultTableView mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.equalTo(self.searchBar.mas_bottom);
            make.left.equalTo(self.view);
            make.right.equalTo(self.view);
            make.bottom.equalTo(self.view);
        }];
    }
}

- (void)searchBarCancelButtonAction:(EMSearchBar *)searchBar
{
    [[EMRealtimeSearch shared] realtimeSearchStop];
    
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    self.isSearching = NO;
    
    [self.searchResults removeAllObjects];
    [self.searchResultTableView reloadData];
    [self.searchResultTableView removeFromSuperview];
}

- (void)searchBarSearchButtonClicked:(EMSearchBar *)searchBar
{
    
}

- (void)searchTextDidChangeWithString:(NSString *)aString
{
    
}

#pragma mark - KeyBoard

- (void)keyBoardWillShow:(NSNotification *)note
{
    if (!self.isSearching) {
        return;
    }
    
    // 获取用户信息
    NSDictionary *userInfo = [NSDictionary dictionaryWithDictionary:note.userInfo];
    // 获取键盘高度
    CGRect keyBoardBounds  = [[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    CGFloat keyBoardHeight = keyBoardBounds.size.height;
    // 获取键盘动画时间
    CGFloat animationTime  = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
    
    // 定义好动作
    void (^animation)(void) = ^void(void) {
        [self.searchResultTableView mas_updateConstraints:^(MASConstraintMaker *make) {
            make.bottom.equalTo(self.view.mas_bottom).offset(-keyBoardHeight);
        }];
    };
    
    if (animationTime > 0) {
        [UIView animateWithDuration:animationTime animations:animation];
    } else {
        animation();
    }
}

- (void)keyBoardWillHide:(NSNotification *)note
{
    if (!self.isSearching) {
        return;
    }
    
    // 获取用户信息
    NSDictionary *userInfo = [NSDictionary dictionaryWithDictionary:note.userInfo];
    // 获取键盘动画时间
    CGFloat animationTime  = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
    
    // 定义好动作
    void (^animation)(void) = ^void(void) {
        [self.searchResultTableView mas_updateConstraints:^(MASConstraintMaker *make) {
            make.bottom.equalTo(self.view.mas_bottom);
        }];
    };
    
    if (animationTime > 0) {
        [UIView animateWithDuration:animationTime animations:animation];
    } else {
        animation();
    }
}

@end