whose_ios/NIMKit/NIMKit/Classes/Sections/Input/TradeInputContainer.m

//
//  TradeInputContainer.m
//  NIMKit
//
//  Created by Fenix Wang on 2017/7/2.
//  Copyright © 2017年 NetEase. All rights reserved.
//

#import "TradeInputContainer.h"
#import "NIMGrowingTextView.h"
#import "UIView+NIM.h"
#import <NIMSDK/NIMSDK.h>
#import "NIMKitMediaFetcher.h"
#import "SVProgressHUD.h"


@interface TradeInputContainer()<NIMGrowingTextViewDelegate, UIScrollViewDelegate>

@property (nonatomic, strong) UILabel               *countLabel;
@property (nonatomic, strong) UIButton              *countBtn;
@property (nonatomic, strong) UISlider              *slider;
@property (nonatomic, strong) UIView                *textViewContainer;
@property (nonatomic, strong) UIView                *textViewBg;
@property (nonatomic, strong) NIMGrowingTextView    *growTextView;
@property (nonatomic, strong) UIButton              *sendBtn;
@property (nonatomic, strong) UIScrollView          *picContainer;
@property (nonatomic, strong) UIButton              *picAddBtn;


@property (nonatomic, strong) NSMutableArray        *picArr;
@property (nonatomic, strong) NSMutableArray        *imgViewArr;
@property (nonatomic, strong) NSMutableArray        *picDataArr;
@property (nonatomic, assign) int                   picUploadIndex;
@property (nonatomic, strong) NIMKitMediaFetcher    *mediaFetcher;

@end

@implementation TradeInputContainer

- (instancetype)initWithFrame:(CGRect)frame
{
    if (self = [super initWithFrame:frame]) {
        [self loadUIComponents];
    }
    return self;
}

- (void)loadUIComponents{
    
    _layoutHold = NO;
    _imgViewArr = [[NSMutableArray alloc] init];
    
    UIButton *btn                  = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, self.nim_width, self.nim_height)];
    btn.backgroundColor = UIColor.whiteColor;
    [btn setTitle:@"" forState:UIControlStateNormal];
    [self addSubview:btn];
    
    _countLabel = [[UILabel alloc] initWithFrame:CGRectMake(self.nim_width - 150, 5, 100, 40)];
    _countLabel.textAlignment = NSTextAlignmentRight;
    [self addSubview:_countLabel];
    
    UIButton *countBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    countBtn.frame = CGRectMake(self.nim_width - 50, 5, 30, 30);
    [countBtn setImage:[UIImage imageNamed:@"箭头_下"] forState:UIControlStateNormal];
    [countBtn addTarget:self action:@selector(toggleSlider:) forControlEvents:UIControlEventTouchUpInside];
    [self addSubview:countBtn];
    
    _slider = [[UISlider alloc] initWithFrame:CGRectMake(10, 40, self.nim_width-20, 40)];
    _slider.minimumValue = 1;
    _slider.maximumValue = 100;
    _slider.value = 1;
    [_slider addTarget:self
                action:@selector(sliderValueChanged)
      forControlEvents:UIControlEventValueChanged
     ];
    [self addSubview:_slider];
    
    
    _textViewContainer = [[UIView alloc] initWithFrame:CGRectMake(10, 80, self.nim_width-20, 40)];
    [self addSubview:_textViewContainer];
    
    _textViewBg = [[UIView alloc] initWithFrame:CGRectMake(0, 0, _textViewContainer.nim_width-80, 40)];
    _textViewBg.layer.cornerRadius = 20;
    _textViewBg.backgroundColor = [UIColor colorWithRed:0.9 green:0.9 blue:0.9 alpha:1];
    [_textViewContainer addSubview:_textViewBg];
    
    _growTextView = [[NIMGrowingTextView alloc] initWithFrame:CGRectMake(10, 0, _textViewContainer.nim_width-100, 40)];
    _growTextView.textViewDelegate = self;
    _growTextView.font = [UIFont systemFontOfSize:14.0f];
    _growTextView.maxNumberOfLines = 1;
    _growTextView.minNumberOfLines = 1;
    _growTextView.textColor = [UIColor blackColor];
    _growTextView.backgroundColor = [UIColor clearColor];
    _growTextView.returnKeyType = UIReturnKeyDone;
    [_textViewContainer addSubview:_growTextView];
    
    _sendBtn = [[UIButton alloc] initWithFrame:CGRectMake(_textViewContainer.nim_width-75, 0, 75, 40)];
    _sendBtn.layer.cornerRadius = 20;
    _sendBtn.backgroundColor = [UIColor colorWithRed:(255.0 / 255.0) green:(171.0 / 255.0) blue:(8.0 / 255.0) alpha:1.0];
    [_sendBtn setTitleColor:UIColor.whiteColor forState:UIControlStateNormal];
    [_sendBtn setTitle:@"发送" forState:UIControlStateNormal];
    [_sendBtn addTarget:self action:@selector(onTouchPublish:) forControlEvents:UIControlEventTouchUpInside];
    [_textViewContainer addSubview:_sendBtn];
    
    _picContainer = [[UIScrollView alloc] initWithFrame:CGRectMake(10, self.nim_height-55, self.nim_width-20, 50)];
    [self addSubview:_picContainer];
    
    _picAddBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    _picAddBtn.frame = CGRectMake(_picContainer.nim_right+5, _picContainer.nim_top, 10, 10);
    [_picAddBtn setImage:[UIImage imageNamed:@"帮助与反馈_03"] forState:UIControlStateNormal];
    [_picAddBtn addTarget:self action:@selector(onTouchPicAdd:) forControlEvents:UIControlEventTouchUpInside];
    [self addSubview:_picAddBtn];
}


- (void)reset{
    _picArr = [[NSMutableArray alloc] init];
    _picDataArr = [[NSMutableArray alloc] init];
    _growTextView.text = @"";
    _slider.value = 1;
    [self sliderValueChanged];
    
    [self layoutPictures];
}


- (void)toggleSlider:(int)sender{
    _slider.hidden = !_slider.isHidden;
}

- (void)sliderValueChanged{
    _countLabel.text = [NSString stringWithFormat:@"x%.0f", roundf(_slider.value)];
}

- (void)didChangeHeight:(CGFloat)height
{
    NSLog(@"height changed %f", height);
    _textViewBg.nim_height = height + 4;
}

- (BOOL)shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
    if ([text isEqualToString:@"\n"]) {
        [_growTextView resignFirstResponder];
        return NO;
    }
    return YES;
}




- (void)layoutPictures
{
    int maxCountPictures = 9;
    CGFloat picPadding = 2;
    float picSize = (self.nim_width - 20 - picPadding * (maxCountPictures - 1)) / maxCountPictures;
    
    CGFloat startX = 0;
    
    int count = (int)_picArr.count;
    int i = 0;
    for(i=0; i<count; i++){
        startX = i * (picSize + picPadding);
        
        UIImageView *imgView = nil;
        if(i >= _imgViewArr.count){
            imgView = [[UIImageView alloc] initWithFrame:CGRectMake(startX, 0, picSize, picSize)];
            [_picContainer addSubview:imgView];
            [_imgViewArr addObject:imgView];
        }
        else{
            imgView = [_imgViewArr objectAtIndex:i];
            imgView.nim_left = startX;
        }
        
        UIImage *img = [_picArr objectAtIndex:i];
        [imgView setImage:img];
        [imgView setHidden:NO];
    }
    
    if(i < _imgViewArr.count)
    {
        for(int j=i; j<_imgViewArr.count; j++)
        {
            [[_imgViewArr objectAtIndex:j] setHidden:YES];
        }
    }
    
    _picContainer.nim_width = _picArr.count * (picSize + picPadding);
    _picAddBtn.nim_left = _picContainer.nim_right + 5;
    _picAddBtn.nim_width = picSize;
    _picAddBtn.nim_height = picSize;
    
    if(count < maxCountPictures)
    {
        _picAddBtn.hidden = NO;
    }
    else
    {
        _picAddBtn.hidden = YES;
    }
}


- (void)onTouchPicAdd:(int)sender{
    [self showImagePicker:UIImagePickerControllerSourceTypePhotoLibrary];
}


- (NIMKitMediaFetcher *)mediaFetcher
{
    if (!_mediaFetcher) {
        _mediaFetcher = [[NIMKitMediaFetcher alloc] init];
    }
    return _mediaFetcher;
}

- (void)showImagePicker:(UIImagePickerControllerSourceType)type{
    
    __weak typeof(self) weakSelf = self;
    _layoutHold = YES;
    [self.mediaFetcher fetchPhotoFromLibrary:^(NSArray *images, NSString *path, PHAssetMediaType type) {
        
        _layoutHold = NO;
        
        switch (type) {
            case PHAssetMediaTypeImage:
            {
                for (UIImage *image in images) {
                    [weakSelf.picArr addObject:image];
                }
                [weakSelf layoutPictures];
            }
                break;
            case PHAssetMediaTypeVideo:
            {
            }
                break;
            default:
                return;
        }
        
    }];
}

- (void)onTouchPublish:(int)sender{
    
    if (self.delegate && [self.delegate respondsToSelector:@selector(sendTrade:picArr:priority:type:)]) {
        
        int count = (int)roundf(_slider.value);
        [self.delegate sendTrade:_growTextView.text picArr:_picArr priority:count type:self.tradeType];
        
    }

}






@end