//
//  RadioButton.m
//  GoldRich
//
//  Created by WindShan on 2017/2/15.
//  Copyright © 2017年 WindShan. All rights reserved.
//

#import "RadioButton.h"

#define RADIO_ICON_WH                     (50.0)
#define RADIO_ICON_WH_5                     (40.0)
#define ICON_TITLE_MARGIN                 (5.0)


@implementation RadioButton

static NSMutableDictionary *_groupRadioDic = nil;


@synthesize delegate = _delegate;
@synthesize checked  = _checked;

- (id)initWithDelegate:(id)delegate groupId:(NSString*)groupId
{
    self = [super init];
    if (self) {
        _delegate = delegate;
        _groupId = [groupId copy];
        
        [self addToGroup];
        
        self.exclusiveTouch = YES;
        
        [self addTarget:self action:@selector(radioBtnChecked) forControlEvents:UIControlEventTouchUpInside];
    }
    return self;
}

- (void)setImageName:(NSString *)normalName selImage:(NSString *)selName
{
    [self setImage:[UIImage imageNamed:normalName] forState:UIControlStateNormal];
    [self setImage:[UIImage imageNamed:selName] forState:UIControlStateSelected];
}

- (void)addToGroup
{
    if(!_groupRadioDic)
    {
        _groupRadioDic = [[NSMutableDictionary alloc] init];
    }
    
    NSMutableArray *_gRadios = [_groupRadioDic objectForKey:_groupId];
    if (!_gRadios)
    {
        _gRadios = [NSMutableArray array];
    }
    
    [_gRadios addObject:self];
    [_groupRadioDic setObject:_gRadios forKey:_groupId];
}

- (void)removeFromGroup
{
    if (_groupRadioDic)
    {
        NSMutableArray *_gRadios = [_groupRadioDic objectForKey:_groupId];
        if (_gRadios)
        {
            [_gRadios removeObject:self];
            if (_gRadios.count == 0)
            {
                [_groupRadioDic removeObjectForKey:_groupId];
            }
        }
    }
}

- (void)uncheckOtherRadios
{
    NSMutableArray *_gRadios = [_groupRadioDic objectForKey:_groupId];
    if (_gRadios.count > 0)
    {
        for (RadioButton *_radio in _gRadios)
        {
            if (_radio.checked && ![_radio isEqual:self])
            {
                _radio.checked = NO;
            }
        }
    }
}

- (void)setChecked:(BOOL)checked
{
    if (_checked == checked)
    {
        return;
    }
    
    _checked = checked;
    self.selected = checked;
    
    if (self.selected)
    {
        [self uncheckOtherRadios];
    }
    
    if (self.selected && _delegate && [_delegate respondsToSelector:@selector(didSelectedRadioButton:groupId:)])
    {
        [_delegate didSelectedRadioButton:self groupId:_groupId];
    }
}

- (void)radioBtnChecked
{
    if (_checked)
    {
        return;
    }
    
    self.selected = !self.selected;
    _checked = self.selected;
    
    if (self.selected)
    {
        [self uncheckOtherRadios];
    }
    
    if (self.selected && _delegate && [_delegate respondsToSelector:@selector(didSelectedRadioButton:groupId:)])
    {
        [_delegate didSelectedRadioButton:self groupId:_groupId];
        
    }
}

//- (CGRect)imageRectForContentRect:(CGRect)contentRect
//{
 //   if(IsiPhone4 || IsiPhone5)
//        return CGRectMake(0, (CGRectGetHeight(contentRect) - RADIO_ICON_WH_5)/2.0, RADIO_ICON_WH_5, RADIO_ICON_WH_5);
//    else
//        return CGRectMake(0, (CGRectGetHeight(contentRect) - RADIO_ICON_WH)/2.0, RADIO_ICON_WH, RADIO_ICON_WH);
//}

- (CGRect)titleRectForContentRect:(CGRect)contentRect
{
    if(IsiPhone4 || IsiPhone5)
        return CGRectMake(0, (CGRectGetHeight(contentRect) - RADIO_ICON_WH_5)/2.0+RADIO_ICON_WH_5,
                      RADIO_ICON_WH_5,
                      RADIO_ICON_WH_5);
    else
    {
        return CGRectMake(0, CGRectGetHeight(contentRect) - RADIO_ICON_WH-ICON_TITLE_MARGIN,
                          RADIO_ICON_WH,
                          RADIO_ICON_WH);
    }
}



- (void)dealloc
{
    [self removeFromGroup];
    
    _delegate = nil;
    _groupId = nil;
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

@end