준비하세요 Angular js 2.0

준비하세요
AngularJS 2.0

+jeado.ko
haibane84@gmail.com

Motivation for AngularJS 2.0
● 성능
● 웹의 변화
● 쓰기 편함

성능
최초 AngularJS는 디자이너를 위해 만들어 졌
다.

웹의 변화
ES6
Web Components
● Custom Elements
● HTML Imports
● Template Element
● Shadow Dom

쓰기 어려움
출처 http://www.bennadel.com/blog/2439-my-experience-with-angularjs-
the-super-heroic-javascript-mvw-framework.htm

AngularJS 2.0의 새로운 기능

AtScript?
언어를 만드는거냐?
더 어렵게 만들려는 수작이야?

module.directive('blink',
['$timeout', function($timeout) {
return {
require: 'options',
restrict: 'A',
link: function(_,element,__,options){
var selectors = someThirdPartyAPI();
element.query(selectors.join(','))
.forEach(e => options.apply(e));
}
};
}]);

module.directive('blink',
['$timeout', function($timeout) {
return {
require: 'options',
restrict: 'A',
link: function(_,element,__,options){
var selectors = someThirdPartyAPI();
}
};
}]);
Array<CssSelectors>
Element

@Directive({
selector: ['[blink]']
})
class Blink {
constructor(element:Element,
options:Options,
timeout:Timeout) {
var selectors:Array<CssSelectors> =
someThirdPartyAPI();
}
}

Ideal Development Environment
Optional Metadata
Types
AtScript
Introspection

ES3 '99
- try/catch
- RegExp
ES4 '07
- Types
- Classes
- Modules
- (other)
ES5 '09
- strict mode
ES6 '15
- Classes
- Modules
- (other)
ES? '??
- Types
- Annotation
- Introspection

AtScript
- Annotations
- Introspection
TypeScript
- Types
ES6
- classes
- modules
ES5

ES5
function Blink(element,
options,
timeout) {
}
Blink.annotations = [
new Directive({selector: '[blink]'})];
Blink.parameters = [
Element, Options, Timeout];

ES6
class Blink {
constructor(element,
options,
timeout) {
}
}
Blink.annotations = [
Blink.parameters = [

TypeScript
class Blink {
public static annotations = [
public static parameters = [
options:Options,
timeout:Timeout) { }
}

AtScript
@Directive({
selector: '[blink]'
})
class Blink {
options:Options,
timeout:Timeout) {
}
}

CoffeeScript
class Blink {
@annotations = [
@parameters = [
constructor: (element, options, timeout){
}
}

AtScript != new language
AtScript = ES6
+ Types
+ Annotations
+ Introspections

AngularJS 1.3
<div ng-controller="SantaTodoController">
<input type="text" ng-model="newTodoTitle">
<button ng-click="addTodo()">+</button>
<tab-container>
<tab-pane title="Tobias">
<div ng-repeat="todo in todosOf('tobias')">
<input type="checkbox"
ng-model="todo.done">
{{todo.title}}
<button ng-click="deleteTodo(todo)">
X
</button>
</div>
</tab-pane>
...

AngularJS 2.0
<div>
<input type="text" [value]="newTodoTitle">
<button (click)="addTodo()">+</buton>
<tab-container>
<tab-pane title="Good kids">
<div [ng-repeat|todo]="todosOf('good')">
<input type="checkbox"
[checked]="todo.done">
{{todo.title}}
<button (click)="deleteTodo(todo)">
X
</button>
</div>
</tab-pane>
...

Event binding
<button (click)="doSomething()">click me</button>
<div (^click)="doSomithing">
<img src="..."><span>text</span>
</div>
<zippy #zippy title="Greeting">
Body of the text which is shown conditionally.
<a href (hover)="zippy.close()">hover to close</a>.
</zippy>
<button (click)="zippy.toggle()">toggle</button>

Property binding
<div [property-name]="expression">
<div [ng-repeat|person]="people">
<span [text]="person.name"></span>
</div>

Databinding
Databinding to
Element`s properties
not to
Element`s attributes
<elm attr=”...”> elm.property=...

Components
= Building block
(LEGO)

<ng-search-icon>
<ng-paper-fab>
<ng-drawer-panel>
<ng-field>

Directive Definition Object ("DDO")
myModule.directive('directiveName', function factory(injectables) {
return {
priority: 0,
template: '<div></div>', // or // function(tElement, tAttrs) { ... },
// or
// templateUrl: 'directive.html', // or // function(tElement, tAttrs) { ... },
transclude: false,
restrict: 'A',
templateNamespace: 'html',
scope: false,
controller: function($scope, $element, $attrs, $transclude, otherInjectables) { ...
},
controllerAs: 'stringAlias',
require: 'siblingDirectiveName', // or // ['^parentDirectiveName', '?
optionalDirectiveName', '?^optionalParent'],
compile: function compile(tElement, tAttrs, transclude) {
return {
pre: function preLink(scope, iElement, iAttrs, controller) { ... },
post: function postLink(scope, iElement, iAttrs, controller) { ... }
}
// or
// return function postLink( ... ) { ... }

Component = Directive …
그 지저분한 Directive 만 가지고
만들라고?

SantaTodoApp component
@ComponentDirective
class SantaTodoApp {
constructor() {
this.newTodoTitle = '';
}
addTodo: function() { ... }
removeTodo: function(todo) { ... }
todosOf: function(filter) { ... }
}

SantaTodoApp component
@ComponentDirective({ ... })
class SantaTodoApp { ... }
@TemplateDirective({ ... })
class NgRepeat { ... }
@DecoratorDirective({ ... })
class NgClass { ... }

Component is the execution
context for the template
컴포넌트의 모든 속성과 메소
드는 템플릿에서 사용할 수 있
다.

Defining services
class TodoStore {
constructor(win:Window) {
this.win = win;
}
add(todo) {
// access this.win.localStorage ...
}
remove(todo) { ... }
todosOf(filter) { ... }
}

Using services
import {TodoStore} from './store';
@ComponentDirective({
directives: [TabContainer, TabPane, NgRepeat]
})
class SantaTodoApp {
constructor(store:TodoStore) {
...
}
...
}

Directives and DI
<tab-container>
<tab-pane title="Tobias">
New Macbook Pro
Tesla Model X
...
</tab-pane>
<tab-pane title="Good kids">
...
</tab-pane>
<tab-pane title="Bad kids">
...
</tab-pane>
</tab-container>

Directives and DI
class TabPane {
constructor(
tabContainer:TabContainer,
element:HTMLElement
) { ... }
...
}
class TabContainer {
constructor(tabs:Query<TabPane>) { ... }
...
}

요약
사망 : Controller, $scope, DDO, Module, jqLite
출생 : AtScript, Web Component 지원, more?
다이어트를 했다?

Angular 2.0 Source
https://github.com/angular/angular

reference
Angular 2.0 Core by Igor Minar & Tobias Bosch at ng-europe 2014(Youtube)
Miško Hevery - Keynote on AtScript at ng-europe 2014 (Youtube)
Angular v2 Template Syntax Summary (Google Doc)
Databinding with Web Components (Google Doc)

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