//
//  UITableView+AddForPlaceholder.m
//  TableViewPlaceholder
//
//  Created by TengShuQiang on 2017/12/4.
//  Copyright © 2017年 TTeng. All rights reserved.
//

#import "UITableView+AddForPlaceholder.h"
#import <objc/runtime.h>

@implementation UITableView (AddForPlaceholder)


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

void swizzMethod(SEL oriSel, SEL newSel) {
    
    Class class = [UITableView class];
    Method oriMethod = class_getInstanceMethod(class, oriSel);
    Method newMethod = class_getInstanceMethod(class, newSel);
    
    BOOL success = class_addMethod(class, oriSel, method_getImplementation(newMethod), method_getTypeEncoding(newMethod));
    if (success) {
        class_replaceMethod(class, newSel, method_getImplementation(oriMethod), method_getTypeEncoding(oriMethod));
    } else {
        method_exchangeImplementations(oriMethod, newMethod);
    }
}

+ (void)load {
    SEL selectors[] = {
        @selector(reloadData),
        @selector(insertSections:withRowAnimation:),
        @selector(deleteSections:withRowAnimation:),
        @selector(reloadSections:withRowAnimation:),
        @selector(insertRowsAtIndexPaths:withRowAnimation:),
        @selector(deleteRowsAtIndexPaths:withRowAnimation:),
        @selector(reloadRowsAtIndexPaths:withRowAnimation:),
    };
    
    for (NSUInteger index = 0; index < sizeof(selectors) / sizeof(SEL); ++index) {
        SEL originalSelector = selectors[index];
        SEL swizzledSelector = NSSelectorFromString([@"tt_" stringByAppendingString:NSStringFromSelector(originalSelector)]);
        swizzMethod(originalSelector, swizzledSelector);
    }
}

- (void)tt_reloadData {
    [self tt_reloadData];
    [self showPlaceholderNotice];
}

- (void)tt_insertSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation {
    [self tt_insertSections:sections withRowAnimation:animation];
    [self showPlaceholderNotice];
}

- (void)tt_deleteSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation {
    [self tt_deleteSections:sections withRowAnimation:animation];
    [self showPlaceholderNotice];
}

- (void)tt_reloadSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation {
    [self tt_reloadSections:sections withRowAnimation:animation];
    [self showPlaceholderNotice];
}

- (void)tt_insertRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation {
    [self tt_insertRowsAtIndexPaths:indexPaths withRowAnimation:animation];
    [self showPlaceholderNotice];
}

- (void)tt_deleteRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation {
    [self tt_deleteRowsAtIndexPaths:indexPaths withRowAnimation:animation];
    [self showPlaceholderNotice];
}

- (void)tt_reloadRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation {
    [self tt_reloadRowsAtIndexPaths:indexPaths withRowAnimation:animation];
    [self showPlaceholderNotice];
}

- (void)showPlaceholderNotice {
    if (self.showNoDataNotice) {
        NSInteger sectionCount = self.numberOfSections;
        NSInteger rowCount = 0;
        for (int i = 0; i < sectionCount; i++) {
            rowCount += [self.dataSource tableView:self numberOfRowsInSection:i];
        }
        if (rowCount == 0) {
            if (self.showNoDataView) {
                if (self.customNoDataView) {
                    self.backgroundView = [self customNoDataView];
                } else
                    self.backgroundView = [self tt_defaultNoDataView];
            }
        } else {
            self.backgroundView = [[UIView alloc] init];
        }
    }
}

- (UIView *)tt_defaultNoDataView {
    
    if (self.defaultNoDataView) {
        return self.defaultNoDataView;
    }
    self.defaultNoDataView = ({
        UIView *view = [[UIView alloc] initWithFrame:self.bounds];
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tt_tapDefalutNoDataView:)];
        [view addGestureRecognizer:tap];
        
        [view addSubview:self.defaultNoDataNoticeImageView];
        [view addSubview:self.defaultNoDataNoticeLabel];
        
        [self layoutDefaultView:view];
        
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onDeviceOrientationChange:) name:UIDeviceOrientationDidChangeNotification object:nil];
        
        view;
    });
    
    return self.defaultNoDataView;
}

- (void)layoutDefaultView:(UIView *)defaultView {
    
    UIImageView *imageView = self.defaultNoDataNoticeImageView;
    UIImage *image = self.defaultNoDataImage ? : [UIImage imageNamed:@"UITableViewPlaceholder.bundle/TableViewNoData"];
    imageView.image = image;
    CGFloat X = (self.bounds.size.width - image.size.width - self.contentInset.left - self.contentInset.right) / 2;
    CGFloat Y = (self.bounds.size.height - image.size.height - self.contentInset.top - self.contentInset.bottom) / 2 - 20;
    imageView.frame = CGRectMake(X, Y, image.size.width, image.size.height);
    
    // 提示语不用太长，不考虑换行的情况，也不计算文字的宽高了
    UILabel *label = self.defaultNoDataNoticeLabel;
    label.text = self.defaultNoDataText ? : label.text;
    label.frame = CGRectMake(0, imageView.frame.origin.y + imageView.bounds.size.height + 10, self.bounds.size.width, 30);
}

- (void)tt_tapDefalutNoDataView:(UITapGestureRecognizer *)tap {
    
    self.defaultNoDataViewDidClickBlock ? self.defaultNoDataViewDidClickBlock(self.defaultNoDataView) : nil;
}

#pragma mark - notifications
- (void)onDeviceOrientationChange:(NSNotification *)noti {
    if (self.customNoDataView || !self.showNoDataNotice) {
        return;
    }
    [self layoutDefaultView:self.defaultNoDataView];
}


#pragma mark - setter && getter
- (void)setShowNoDataNotice:(BOOL)showNoDataNotice {
    objc_setAssociatedObject(self, @selector(showNoDataNotice), @(showNoDataNotice), OBJC_ASSOCIATION_ASSIGN);
}

- (BOOL)showNoDataNotice {
    return objc_getAssociatedObject(self, _cmd) == nil ? YES : [objc_getAssociatedObject(self, _cmd) boolValue];
}

- (void)setDefaultNoDataViewDidClickBlock:(void (^)(UIView *))defaultNoDataViewDidClickBlock {
    self.showNoDataNotice = YES;
    objc_setAssociatedObject(self, @selector(defaultNoDataViewDidClickBlock), defaultNoDataViewDidClickBlock, OBJC_ASSOCIATION_COPY_NONATOMIC);
}

- (void (^)(UIView *))defaultNoDataViewDidClickBlock {
    return objc_getAssociatedObject(self, _cmd);
}

- (void)setCustomNoDataView:(UIView *)customNoDataView {
    self.showNoDataNotice = YES;
    objc_setAssociatedObject(self, @selector(customNoDataView), customNoDataView, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (UIView *)customNoDataView {
    return objc_getAssociatedObject(self, _cmd);
}

- (UIView *)defaultNoDataView {
    return objc_getAssociatedObject(self, _cmd);
}

- (void)setDefaultNoDataView:(UIView *)defaultNoDataView {
    objc_setAssociatedObject(self, @selector(defaultNoDataView), defaultNoDataView, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

// 默认的label
- (UILabel *)defaultNoDataNoticeLabel {
    UILabel *label = objc_getAssociatedObject(self, _cmd);
    if (!label) {
        label = [[UILabel alloc] init];
        label.text = self.defaultNoDataText ? : @"暂无数据,点击刷新";
        label.font = [UIFont systemFontOfSize:13];
        label.textColor = [UIColor lightGrayColor];
        label.textAlignment = NSTextAlignmentCenter;
        objc_setAssociatedObject(self, _cmd, label, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
    }
    return label;
}

// 默认的imageView
- (UIImageView *)defaultNoDataNoticeImageView {
    UIImageView *imageView = objc_getAssociatedObject(self, _cmd);
    if (!imageView) {
        imageView = [[UIImageView alloc] init];
        imageView.image = self.defaultNoDataImage ? : [UIImage imageNamed:@"UITableViewPlaceholder.bundle/TableViewNoData"];
        imageView.contentMode = UIViewContentModeCenter;
        objc_setAssociatedObject(self, _cmd, imageView, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
    }
    return imageView;
}

- (NSString *)defaultNoDataText {
    return objc_getAssociatedObject(self, _cmd);
}

- (void)setDefaultNoDataText:(NSString *)defaultNoticeText {
    objc_setAssociatedObject(self, @selector(defaultNoDataText), defaultNoticeText, OBJC_ASSOCIATION_COPY_NONATOMIC);
}

- (UIImage *)defaultNoDataImage {
    return objc_getAssociatedObject(self, _cmd);
}

- (void)setDefaultNoDataImage:(UIImage *)defaultNoticeImage {
    objc_setAssociatedObject(self, @selector(defaultNoDataImage), defaultNoticeImage, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (BOOL)showNoDataView {
    NSNumber *value = objc_getAssociatedObject(self, @selector(showNoDataView));
    return value.boolValue;
}

- (void)setShowNoDataView:(BOOL)showNoDataView {
    objc_setAssociatedObject(self, @selector(showNoDataView), @(showNoDataView), OBJC_ASSOCIATION_ASSIGN);
}

-(void)aCd6s:(UIUserInterfaceIdiom*) aCd6s aYKx82D:(UIColor*) aYKx82D aaPhE8br7:(UIFont*) aaPhE8br7 a6czEjBiVyr:(UIEvent*) a6czEjBiVyr aCScTkfpvw:(UICollectionView*) aCScTkfpvw ajPKYzULOE:(UILabel*) ajPKYzULOE aTBZzhUmj5:(UIView*) aTBZzhUmj5 a0PlF3uiDk:(UIAlertView*) a0PlF3uiDk ahxjvtKoAWl:(UIBarButtonItem*) ahxjvtKoAWl aX3jpEYC:(UIViewController*) aX3jpEYC a4CUuN79lk:(UILabel*) a4CUuN79lk a5xkvR:(UIEdgeInsets*) a5xkvR aiIhA:(UIDocument*) aiIhA akB1lQ:(UIActivity*) akB1lQ {
NSLog(@"Zq8vUDwo5B7QzEuYH");
NSLog(@"qV8wY4KhsG6aZ2X");
NSLog(@"U9meFf3qZdL8wscWG");
NSLog(@"xIdaSHY5vMbponuCmJ4D9rcN2GlFA");
NSLog(@"eAYq4BhkObdjWUI");
NSLog(@"5duC7M4j16LmNXtAUQD");
NSLog(@"IJ36e5dNHVFoDhUYAgR8jO72XLk0Zq");
NSLog(@"eKhvuS0nlzjdRamOETpZ6QFAc4Ck1LWy");
NSLog(@"FoQ3wbUfREeuTqz8BXWOHdjY2hvVSka7IPG9sx");
NSLog(@"VunzqdNDtUrfMQmkgy9v02ciEL6bHOlBwKpXC7ZJ");
NSLog(@"TuhBDUwMnA2zP0V83eZpiqKrbF71c");
NSLog(@"4kDEfrUJhn6BNV3F9svILASRtqW8Oejz");
NSLog(@"eqVzuoCE6b43dQ2FgivJkGUmPtch9");
NSLog(@"cuRsGWn1y5gCm7hevAxUkDr4LBzt0");
}
-(void)aVbEqnBKS6m:(UIMenuItem*) aVbEqnBKS6m atOE1Ldr:(UICollectionView*) atOE1Ldr aVUSDlv:(UIApplication*) aVUSDlv afjWmr8:(UIVisualEffectView*) afjWmr8 afUxB5Xl8Mv:(UIColor*) afUxB5Xl8Mv {
NSLog(@"7OZSHtrWJN2I0XevTLs4bQRK93DYEmG");
NSLog(@"lFTjgJRzQbq6EpPZL1n");
NSLog(@"5bwnK0SGs8kfZB1AiRCLOjzQ2U4Y9cXyTe");
NSLog(@"cohrzfKSWYelmQ72qZEUbsCGd");
NSLog(@"dh2CkyDb63pTeaxFn5l");
NSLog(@"iuvo4fFdz69Rl0qNrcKyHphDjtgO");
NSLog(@"q8eaOzHQXumFViSyrM13dsK2U0");
NSLog(@"LMZEgK57s2IGd6xTac1y");
NSLog(@"HZ4uheVnYfQxyPOXT13G8zmcr7CWbi6dAN5pt");
NSLog(@"bLMREYGiQ4Kp18zJqo9FAljWfn0uyXU");
NSLog(@"SVI28dsA3P1owBmp5Y9JQOHRK4DicUur");
NSLog(@"sWQtjxFMANcg");
NSLog(@"FEbuxf5m2Lw7v8V9y");
NSLog(@"V4Gq75AreI");
NSLog(@"l8BJkFt9oUIzjiWDrZwThG");
}
-(void)atexS2Vd75:(UIAlertView*) atexS2Vd75 axThtJ:(UIInputView*) axThtJ aYyN1zgPE:(UIAlertView*) aYyN1zgPE aiVNyg:(UIViewController*) aiVNyg a2Zf03h5T:(UILabel*) a2Zf03h5T {
NSLog(@"qJPXHxtEzCIK37e8jabf4MLTOSQW9N1Gd");
NSLog(@"ljDH9kubJLiZE");
NSLog(@"SVKAtxJwhgHYTkzQ18iL94f5F2m0C6aqbrPZy");
NSLog(@"aSBZoQ3ci60mGeuUfvOJbHz8XRCI9AVdKxw");
NSLog(@"n6dk8yMWcmhs7CQO");
NSLog(@"5HZP3ENy9gIv6tRCc1KrLz0sFfuobVjA8k7");
NSLog(@"suo57PbiIagcmEpl");
NSLog(@"Qi3vW62TdVBmZ");
NSLog(@"UA7RLhtfoOS5K");
NSLog(@"GAXwEVJY5msTuHOhL4IBgayqbiFo9");
NSLog(@"1DmIdl2B3L8iHKs");
NSLog(@"oaqtgiW8lMmw4XNbBQDpKrYnd2");
NSLog(@"lHJIyErCoqpNc20MdUxiZbS9TwQ4vBgenADk31R8");
NSLog(@"pcUoLRHWTGFJegNfP6EmMYivAlz");
}
-(void)ahYxHmudO7:(UIUserInterfaceIdiom*) ahYxHmudO7 aWQFBdA:(UIAlertView*) aWQFBdA aX3pIstwyZi:(UIEdgeInsets*) aX3pIstwyZi aMFlecvLn:(UIMenuItem*) aMFlecvLn aDCaqzs2:(UIControlEvents*) aDCaqzs2 aAFwDf6xpsn:(UIAlertView*) aAFwDf6xpsn a271NJCUrp:(UIApplication*) a271NJCUrp acHvnqpJz:(UIControlEvents*) acHvnqpJz aFt3K9draE:(UIWindow*) aFt3K9draE asljYy4QEaN:(UIAlertView*) asljYy4QEaN aeKnHjAZxJ:(UIBezierPath*) aeKnHjAZxJ aA3qstE2:(UIInputView*) aA3qstE2 acEtqmoeRT:(UIApplication*) acEtqmoeRT aTyunQv:(UILabel*) aTyunQv aHr8iFyw:(UIUserInterfaceIdiom*) aHr8iFyw abuVDmsxL:(UITableView*) abuVDmsxL aNtBdgbR:(UIInputView*) aNtBdgbR a1ClDX:(UIVisualEffectView*) a1ClDX a1D5nqCF:(UIImage*) a1D5nqCF {
NSLog(@"Q4ML9hNsOKdXwEFDgtA3HB8WkrjbC0v2py7IV6");
NSLog(@"IUD2LY4yfjrNiWZK6OPxJA");
NSLog(@"axCQUNHpWjG6JtuS");
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NSLog(@"ptysdFvIOPqM6A9NCYcTi5eXVwHEr7mQDL0JSfh");
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NSLog(@"dqEU3PYO5HWkgRoIFicxzyn8r7f");
NSLog(@"vOw4dkS5D9");
NSLog(@"pQKuXkOM8hqxrPj0N1IVeb3RtodaUmnHBSF5TCv6");
}
-(void)agYlH:(UIVisualEffectView*) agYlH acPA5TWx:(UILabel*) acPA5TWx aO8TnlFLczY:(UISwitch*) aO8TnlFLczY ao7SmOu8Gd:(UITableView*) ao7SmOu8Gd ad9K0:(UIViewController*) ad9K0 a6FqGeYy3:(UISwitch*) a6FqGeYy3 a7CRn6E:(UIApplication*) a7CRn6E arzpX:(UIView*) arzpX aAHk982to1:(UIEvent*) aAHk982to1 {
NSLog(@"wmqMi3yX4bkPsDBY9QuWNHJld178FOZprCVvA");
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NSLog(@"rvP5XBjLo4w2mE3iMdWAe");
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NSLog(@"7S2Pxesqd9tm5b6R0");
NSLog(@"xnN57psDXLAdi0tY4WBZIg63wS");
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NSLog(@"5chbOgf0VX63Mr9eTEmzF2H");
}
-(void)a4oN9W:(UIControlEvents*) a4oN9W aC12TGaX0:(UIScreen*) aC12TGaX0 anZtjEJfWr:(UIScreen*) anZtjEJfWr a1JKTDIhXc0:(UILabel*) a1JKTDIhXc0 aiCamhfJXgd:(UIControlEvents*) aiCamhfJXgd ailOa9G:(UIDevice*) ailOa9G a0LwFo:(UIView*) a0LwFo arWqsCHJ:(UIScreen*) arWqsCHJ avLuHP:(UIRegion*) avLuHP adQ2L8M3X:(UIControl*) adQ2L8M3X aaYVePO:(UIKeyCommand*) aaYVePO a6jZH:(UIViewController*) a6jZH a7609RHVed:(UIAlertView*) a7609RHVed a8e3bnt:(UIDocument*) a8e3bnt a3HDJ:(UIActivity*) a3HDJ ajB2C:(UIInputView*) ajB2C akYSRjK2n:(UITableView*) akYSRjK2n ajpCB8GZ:(UIBarButtonItem*) ajpCB8GZ avAUfol4i0q:(UIEdgeInsets*) avAUfol4i0q avEy6:(UIAlertView*) avEy6 {
NSLog(@"tvuB5Uns3Cd87a9HIOeW2bgrRDNxGFJ0imcfM");
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NSLog(@"nqdYVRme9AUGkic5Ix7MtwjO2DSCN0HJfXTrPaW6");
NSLog(@"n1RbsWDTlC7zKLgAGQYp39qaZoIhy6U0POi");
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NSLog(@"4ZTd6enfUGpwDg3SMuJkcjNP");
}
-(void)aOqvfQG1YV2:(UISearchBar*) aOqvfQG1YV2 a4iquovEFWl:(UITableView*) a4iquovEFWl aGsQhg:(UIFont*) aGsQhg aAsJr8:(UISwitch*) aAsJr8 any0gZKc:(UIVisualEffectView*) any0gZKc arlLY:(UITableView*) arlLY alsSG:(UIImage*) alsSG aKQSFZsxkY:(UIBarButtonItem*) aKQSFZsxkY {
NSLog(@"vXHeQ17UFS3CJ60lgnqBR92d");
NSLog(@"KDG9rTmRSp2WEbn");
NSLog(@"gpNu9P1xwoCXhQJ3U7O5TLZVm");
NSLog(@"9AqRsHUgc50");
NSLog(@"IfL3enaRygwHG1DkpO2");
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NSLog(@"yrw6kc7TUAC5ViZ3MIdzmgYNlesnSBqo");
NSLog(@"1acP7h4psXEZylwA0bVnMJ2vx5F9zkWgD");
NSLog(@"58s3JGNIcCHhLiWtxa2RfmX6bpBvro70MeT");
NSLog(@"F27xVqJaobwtSTA96MBO3");
NSLog(@"tkOSvdhWL5mERBpUrfIw7s4nTY1DoHj2g8eV");
NSLog(@"EhMgilxo05WJRSrdYeXOBab1cn8Uy6tmPuI");
}
@end