结构型之六-代理模式

Proxy（代理模式）

为其他对象提供一种代理以控制对这个对象的访问。
UITableView的delegate和dataSource，都是通过代理对象来控制对UITableView的访问。

VC.m

HCDschoolGirl *girl = [[HCDschoolGirl alloc]init];
girl.name = @"哈哈哈哈哈";
HCDproxy *proxy = [[HCDproxy alloc]initWithSchoolGirl:girl];
[proxy giveFlowers];
[proxy giveDolls];
[proxy giveChocolate];

HCDgiveGift.h // 方法列表

@protocol HCDgiveGift <NSObject>
///  送洋娃娃
- (void)giveDolls;
///  送鲜花
- (void)giveFlowers;
///  送巧克力
- (void)giveChocolate;
@end

HCDproxy.h // 代理类

@interface HCDproxy : NSObject<HCDgiveGift>
-(instancetype)initWithSchoolGirl:(HCDschoolGirl *)schoolGirl;
@end

HCDproxy.m

@interface HCDproxy ()
@property (strong, nonatomic) HCDpursuit *pursuit;
@end
@implementation HCDproxy
- (instancetype)initWithSchoolGirl:(HCDschoolGirl *)schoolGirl {
    self = [super init];
    if (self) {
        self.pursuit = [[HCDpursuit alloc] initWithSchoolGirl:schoolGirl];
    }
    return self;
}
- (void)giveDolls {
    [self.pursuit giveDolls];
}
- (void)giveFlowers {
    [self.pursuit giveFlowers];
}
- (void)giveChocolate {
    [self.pursuit giveChocolate];
}
@end

HCDpursuit.h // 实现类

@interface HCDpursuit : NSObject<HCDgiveGift>
-(instancetype)initWithSchoolGirl:(HCDschoolGirl *)schoolGirl;
@end

HCDpursuit.m

@interface HCDpursuit ()
@property(nonatomic,strong)HCDschoolGirl *schoolGirl;
@end
@implementation HCDpursuit
-(instancetype)initWithSchoolGirl:(HCDschoolGirl *)schoolGirl{
    self = [super init];
    if (self) {
        _schoolGirl = schoolGirl;
    }
    return self;
}
-(void)giveChocolate{
    NSLog(@"送你巧克力%@",self.schoolGirl.name);
}
-(void)giveDolls{
    NSLog(@"送你洋娃娃%@",self.schoolGirl.name);
}
-(void)giveFlowers{
    NSLog(@"送你玫瑰花%@",self.schoolGirl.name);
}
@end

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