Mac OS X and ios operating systems. Lecture 5 Design patterns. Tomasz Idzi
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1 Lecture 5 Design patterns
2 What is it? reusable solutions clear code easy to develop
3 Descripion of pattern. what why how the design pattern is you should use it to use it
4 singleton abstract factory MVC decorator adapter facade composite observer memento chain of responsibility command
5 Model View Controller what why how the design pattern is you should use it to use it
6 what Model View Controller controller update notify update user actions model view
7 why Model View Controller better understanding Cocoa easy add new features use it in other projects
8 Model View Controller controller update notify update user actions model view
9 Model View Controller ViewController notify update update user actions Album AlbumView
10 what Singleton Manager +instance:manager +sharedinstance():manager -init():id
11 why Singleton global access
12 Singleton LibraryAPI +instance:libraryapi +sharedinstance():libraryapi -init():id
13 Singleton
14 what Facade API remote server database file system memory
15 why Facade single interface to a complex subsystem reduces dependencies of outside code easier to develop
16 Facade LibraryAPI HTTPClient Persistency Manager
17 Facade LibraryAPI HTTPClient Persistency Manager
18 what Decorator Obj-c category delegation
19 what Decorator category NewClass : NSString
20 what Decorator category NSString +NewClass.h NSString +NewClass.m
21 why Decorator category extend existing classes without subclassing replace existing method add methods to any of Cocoa s own classes
22 Decorator category
23 Decorator category
24 Decorator category
25 Decorator category
26 Decorator category titles Artist Album Genre Year values album.artist album.tittle album.genre album.year
27 Decorator category
28 what Decorator delegation ViewController UITableView tableview:numberofrowsinsection: return 4 tableview:cellforrowatindexpath: How many rows should I draw? for (int i=0;i<4;i++) What should I present for cell 1? return cell and so on...
29 why Decorator delegation changes in another object two objects coordinate to solve a problem
30 Decorator delegation MyCell MainViewController.h.m.m
31 what Adapter
32 what Adapter
33 what Adapter client <target> request adaptee request adapter request [adaptee specificrequest]
34 why Adapter different types of objects work together easy add new features use it in other projects
35 Adapter
36 Adapter HorizontalScroller.h
37 Adapter HorizontalScroller.m
38 Adapter HorizontalScroller.m
39 Adapter HorizontalScroller.m
40 Adapter HorizontalScroller.m
41 Adapter HorizontalScroller.m
42 Adapter
43 what Observer subject attachobserver:observer detachobserver:observer notify observer update ConcreteSubject getstate setstate:state subjectstate_ ConcreteObserver update observestate_
44 why Observer one object notifies other objects of any state change
45 Observer Notification Key-Value Observing (KVO)
46 Observer Notification AlbumView.m LibraryAPI.m
47 Observer Notification PresistencyManager.m
48 Observer Notification LibraryAPI.m
49 Observer Key-Value Observing (KVO) AlbumView.m
50 what Memento originator -state + SetMemento + CreateMemento memento - state + GetState + SetState memento caretaker
51 why Memento save and load app state whenever you want
52 Memento
53 what Command client invoker <Command> execute receiver action receiver ConcreteCommand execute [receiver action]
54 why Command app support undo/redo
55 Command
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