1414 lines
78 KiB
HTML
1414 lines
78 KiB
HTML
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<html lang="en"><head></head><body><form id="mainForm" method="post" action="http://plnkr.co/edit/?p=preview" target="_self"><input type="hidden" name="files[app/app.component.ts]" value="/* tslint:disable:forin member-ordering */
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import { AfterViewInit, Component, ElementRef, OnInit, QueryList, ViewChildren } from '@angular/core';
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import { Hero } from './hero';
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// Alerter fn: monkey patch during test
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export function alerter(msg?: string) {
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window.alert(msg);
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}
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export enum Color {Red, Green, Blue};
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/**
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* Giant grab bag of stuff to drive the chapter
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*/
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@Component({
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moduleId: module.id,
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selector: 'my-app',
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templateUrl: './app.component.html',
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styleUrls: [ './app.component.css' ]
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})
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export class AppComponent implements AfterViewInit, OnInit {
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ngOnInit() {
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this.resetHeroes();
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this.setCurrentClasses();
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this.setCurrentStyles();
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}
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ngAfterViewInit() {
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// Detect effects of NgForTrackBy
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trackChanges(this.heroesNoTrackBy, () => this.heroesNoTrackByCount += 1);
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trackChanges(this.heroesWithTrackBy, () => this.heroesWithTrackByCount += 1);
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}
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@ViewChildren('noTrackBy') heroesNoTrackBy: QueryList<ElementRef>;
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@ViewChildren('withTrackBy') heroesWithTrackBy: QueryList<ElementRef>;
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actionName = 'Go for it';
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alert = alerter;
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badCurly = 'bad curly';
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classes = 'special';
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callFax(value: string) {this.alert(`Faxing ${value} ...`); }
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callPhone(value: string) {this.alert(`Calling ${value} ...`); }
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canSave = true;
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changeIds() {
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this.resetHeroes();
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this.heroes.forEach(h => h.id += 10 * this.heroIdIncrement++);
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this.heroesWithTrackByCountReset = -1;
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}
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clearTrackByCounts() {
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const trackByCountReset = this.heroesWithTrackByCountReset;
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this.resetHeroes();
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this.heroesNoTrackByCount = -1;
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this.heroesWithTrackByCount = trackByCountReset;
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this.heroIdIncrement = 1;
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}
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clicked = '';
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clickMessage = '';
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clickMessage2 = '';
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Color = Color;
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color = Color.Red;
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colorToggle() {this.color = (this.color === Color.Red) ? Color.Blue : Color.Red; }
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currentHero: Hero;
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deleteHero(hero: Hero) {
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this.alert(`Delete ${hero ? hero.name : 'the hero'}.`);
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}
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evilTitle = 'Template <script>alert("evil never sleeps")</script>Syntax';
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fontSizePx = 16;
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title = 'Template Syntax';
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getStyles(el: Element) {
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let styles = window.getComputedStyle(el);
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let showStyles = {};
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for (let p in this.currentStyles) { // only interested in these styles
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showStyles[p] = styles[p];
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}
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return JSON.stringify(showStyles);
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}
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getVal() { return this.val; }
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hero: Hero; // defined to demonstrate template context precedence
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heroes: Hero[];
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// trackBy change counting
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heroesNoTrackByCount = 0;
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heroesWithTrackByCount = 0;
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heroesWithTrackByCountReset = 0;
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heroIdIncrement = 1;
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// heroImageUrl = 'http://www.wpclipart.com/cartoon/people/hero/hero_silhoutte_T.png';
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// Public Domain terms of use: http://www.wpclipart.com/terms.html
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heroImageUrl = 'images/hero.png';
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iconUrl = 'images/ng-logo.png';
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isActive = false;
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isSpecial = true;
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isUnchanged = true;
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nullHero: Hero = null;
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onCancel(event: KeyboardEvent) {
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let evtMsg = event ? ' Event target is ' + (<HTMLElement>event.target).innerHTML : '';
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this.alert('Canceled.' + evtMsg);
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}
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onClickMe(event: KeyboardEvent) {
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let evtMsg = event ? ' Event target class is ' + (<HTMLElement>event.target).className : '';
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this.alert('Click me.' + evtMsg);
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}
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onSave(event: KeyboardEvent) {
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let evtMsg = event ? ' Event target is ' + (<HTMLElement>event.target).innerText : '';
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this.alert('Saved.' + evtMsg);
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}
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onSubmit() { /* referenced but not used */}
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product = {
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name: 'frimfram',
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price: 42
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};
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// updates with fresh set of cloned heroes
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resetHeroes() {
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this.heroes = Hero.heroes.map(hero => hero.clone());
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this.currentHero = this.heroes[0];
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this.heroesWithTrackByCountReset = 0;
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}
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private samenessCount = 5;
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moreOfTheSame() { this.samenessCount++; };
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get sameAsItEverWas() {
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let result: string[] = Array(this.samenessCount);
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for ( let i = result.length; i-- > 0; ) { result[i] = 'same as it ever was ...'; }
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return result;
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// return [1,2,3,4,5].map(id => {
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// return {id:id, text: 'same as it ever was ...'};
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// });
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}
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setUppercaseName(name: string) {
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this.currentHero.name = name.toUpperCase();
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}
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currentClasses: {};
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setCurrentClasses() {
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// CSS classes: added/removed per current state of component properties
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this.currentClasses = {
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saveable: this.canSave,
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modified: !this.isUnchanged,
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special: this.isSpecial
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};
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}
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currentStyles: {};
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setCurrentStyles() {
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this.currentStyles = {
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// CSS styles: set per current state of component properties
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'font-style': this.canSave ? 'italic' : 'normal',
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'font-weight': !this.isUnchanged ? 'bold' : 'normal',
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'font-size': this.isSpecial ? '24px' : '12px'
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};
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}
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trackByHeroes(index: number, hero: Hero): number { return hero.id; }
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trackById(index: number, item: any): number { return item['id']; }
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val = 2;
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// villainImageUrl = 'http://www.clker.com/cliparts/u/s/y/L/x/9/villain-man-hi.png'
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// Public Domain terms of use http://www.clker.com/disclaimer.html
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villainImageUrl = 'images/villain.png';
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}
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// helper to track changes to viewChildren
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function trackChanges(views: QueryList<ElementRef>, changed: () => void) {
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let oldRefs = views.toArray();
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views.changes.subscribe((changes: QueryList<ElementRef>) => {
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const changedRefs = changes.toArray();
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// Is every changed ElemRef the same as old and in the same position
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const isSame = oldRefs.every((v, i) => v === changedRefs[i]);
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if (!isSame) {
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oldRefs = changedRefs;
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// wait a tick because called after views are constructed
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setTimeout(changed, 0);
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}
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});
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/app.module.1.ts]" value="import { NgModule } from '@angular/core';
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import { BrowserModule } from '@angular/platform-browser';
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import { FormsModule } from '@angular/forms'; // <--- JavaScript import from Angular
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/* Other imports */
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@NgModule({
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imports: [
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BrowserModule,
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FormsModule // <--- import into the NgModule
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],
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/* Other module metadata */
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})
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export class AppModule { }
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/app.module.ts]" value="import { NgModule } from '@angular/core';
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import { BrowserModule } from '@angular/platform-browser';
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import { FormsModule } from '@angular/forms';
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import { AppComponent } from './app.component';
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import { BigHeroDetailComponent, HeroDetailComponent } from './hero-detail.component';
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import { ClickDirective, ClickDirective2 } from './click.directive';
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import { HeroFormComponent } from './hero-form.component';
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import { heroSwitchComponents } from './hero-switch.components';
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import { SizerComponent } from './sizer.component';
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@NgModule({
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imports: [
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BrowserModule,
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FormsModule
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],
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declarations: [
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AppComponent,
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BigHeroDetailComponent,
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HeroDetailComponent,
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HeroFormComponent,
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heroSwitchComponents,
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ClickDirective,
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ClickDirective2,
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SizerComponent
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],
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bootstrap: [ AppComponent ]
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})
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export class AppModule { }
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/click.directive.ts]" value="/* tslint:disable use-output-property-decorator */
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import { Directive, ElementRef, EventEmitter, Output } from '@angular/core';
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@Directive({selector: '[myClick]'})
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export class ClickDirective {
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@Output('myClick') clicks = new EventEmitter<string>(); // @Output(alias) propertyName = ...
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toggle = false;
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constructor(el: ElementRef) {
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el.nativeElement
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.addEventListener('click', (event: Event) => {
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this.toggle = !this.toggle;
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this.clicks.emit(this.toggle ? 'Click!' : '');
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});
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}
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}
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@Directive({
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selector: '[myClick2]',
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outputs: ['clicks:myClick'] // propertyName:alias
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})
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export class ClickDirective2 {
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clicks = new EventEmitter<string>();
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toggle = false;
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constructor(el: ElementRef) {
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el.nativeElement
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.addEventListener('click', (event: Event) => {
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this.toggle = !this.toggle;
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this.clicks.emit(this.toggle ? 'Click2!' : '');
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});
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}
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/hero-detail.component.ts]" value="/* tslint:disable use-input-property-decorator use-output-property-decorator */
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import { Component, EventEmitter, Input, Output } from '@angular/core';
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import { Hero } from './hero';
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@Component({
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selector: 'hero-detail',
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inputs: ['hero'],
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outputs: ['deleteRequest'],
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styles: ['button { margin-left: 8px} div {margin: 8px 0} img {height:24px}'],
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template: `
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<div>
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<img src="{{heroImageUrl}}">
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<span [style.text-decoration]="lineThrough">
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{{prefix}} {{hero?.name}}
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</span>
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<button (click)="delete()">Delete</button>
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</div>`
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})
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export class HeroDetailComponent {
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hero: Hero = new Hero(-1, '', 'Zzzzzzzz'); // default sleeping hero
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// heroImageUrl = 'http://www.wpclipart.com/cartoon/people/hero/hero_silhoutte_T.png';
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// Public Domain terms of use: http://www.wpclipart.com/terms.html
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heroImageUrl = 'images/hero.png';
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lineThrough = '';
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@Input() prefix = '';
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// This component make a request but it can't actually delete a hero.
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deleteRequest = new EventEmitter<Hero>();
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delete() {
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this.deleteRequest.emit(this.hero);
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this.lineThrough = this.lineThrough ? '' : 'line-through';
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}
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}
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@Component({
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selector: 'big-hero-detail',
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template: `
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<div class="detail">
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<img src="{{heroImageUrl}}">
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<div><b>{{hero?.name}}</b></div>
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<div>Name: {{hero?.name}}</div>
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<div>Emotion: {{hero?.emotion}}</div>
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<div>Birthdate: {{hero?.birthdate | date:'longDate'}}</div>
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<div>Web: <a href="{{hero?.url}}" target="_blank">{{hero?.url}}</a></div>
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<div>Rate/hr: {{hero?.rate | currency:'EUR'}}</div>
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<br clear="all">
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<button (click)="delete()">Delete</button>
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</div>
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||
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`,
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||
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styles: [`
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.detail { border: 1px solid black; padding: 4px; max-width: 450px; }
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||
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img { float: left; margin-right: 8px; height: 100px; }
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||
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`]
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||
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})
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||
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export class BigHeroDetailComponent extends HeroDetailComponent {
|
||
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@Input() hero: Hero;
|
||
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@Output() deleteRequest = new EventEmitter<Hero>();
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||
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delete() {
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this.deleteRequest.emit(this.hero);
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}
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}
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||
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||
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||
|
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/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/hero-form.component.ts]" value="import { Component, Input, ViewChild } from '@angular/core';
|
||
|
|
import { NgForm } from '@angular/forms';
|
||
|
|
|
||
|
|
import { Hero } from './hero';
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
moduleId: module.id,
|
||
|
|
selector: 'hero-form',
|
||
|
|
templateUrl: './hero-form.component.html',
|
||
|
|
styles: [`
|
||
|
|
button { margin: 6px 0; }
|
||
|
|
#heroForm { border: 1px solid black; margin: 20px 0; padding: 8px; max-width: 350px; }
|
||
|
|
`]
|
||
|
|
})
|
||
|
|
export class HeroFormComponent {
|
||
|
|
@Input() hero: Hero;
|
||
|
|
@ViewChild('heroForm') form: NgForm;
|
||
|
|
|
||
|
|
private _submitMessage = '';
|
||
|
|
|
||
|
|
get submitMessage() {
|
||
|
|
if (!this.form.valid) {
|
||
|
|
this._submitMessage = '';
|
||
|
|
}
|
||
|
|
return this._submitMessage;
|
||
|
|
}
|
||
|
|
|
||
|
|
onSubmit(form: NgForm) {
|
||
|
|
this._submitMessage = 'Submitted. form value is ' + JSON.stringify(form.value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/hero-switch.components.ts]" value="import { Component, Input } from '@angular/core';
|
||
|
|
import { Hero } from './hero';
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'happy-hero',
|
||
|
|
template: `Wow. You like {{hero.name}}. What a happy hero ... just like you.`
|
||
|
|
})
|
||
|
|
export class HappyHeroComponent {
|
||
|
|
@Input() hero: Hero;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'sad-hero',
|
||
|
|
template: `You like {{hero.name}}? Such a sad hero. Are you sad too?`
|
||
|
|
})
|
||
|
|
export class SadHeroComponent {
|
||
|
|
@Input() hero: Hero;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'confused-hero',
|
||
|
|
template: `Are you as confused as {{hero.name}}?`
|
||
|
|
})
|
||
|
|
export class ConfusedHeroComponent {
|
||
|
|
@Input() hero: Hero;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'unknown-hero',
|
||
|
|
template: `{{message}}`
|
||
|
|
})
|
||
|
|
export class UnknownHeroComponent {
|
||
|
|
@Input() hero: Hero;
|
||
|
|
get message() {
|
||
|
|
return this.hero && this.hero.name ?
|
||
|
|
`${this.hero.name} is strange and mysterious.` :
|
||
|
|
'Are you feeling indecisive?';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
export const heroSwitchComponents =
|
||
|
|
[ HappyHeroComponent, SadHeroComponent, ConfusedHeroComponent, UnknownHeroComponent ];
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/hero.ts]" value="export class Hero {
|
||
|
|
static nextId = 1;
|
||
|
|
|
||
|
|
static heroes: Hero[] = [
|
||
|
|
new Hero(
|
||
|
|
325,
|
||
|
|
'Hercules',
|
||
|
|
'happy',
|
||
|
|
new Date(1970, 1, 25),
|
||
|
|
'http://www.imdb.com/title/tt0065832/'
|
||
|
|
),
|
||
|
|
new Hero(1, 'Mr. Nice', 'happy'),
|
||
|
|
new Hero(2, 'Narco', 'sad' ),
|
||
|
|
new Hero(3, 'Windstorm', 'confused' ),
|
||
|
|
new Hero(4, 'Magneta')
|
||
|
|
];
|
||
|
|
|
||
|
|
|
||
|
|
constructor(
|
||
|
|
public id?: number,
|
||
|
|
public name?: string,
|
||
|
|
public emotion?: string,
|
||
|
|
public birthdate?: Date,
|
||
|
|
public url?: string,
|
||
|
|
public rate = 100,
|
||
|
|
) {
|
||
|
|
this.id = id ? id : Hero.nextId++;
|
||
|
|
}
|
||
|
|
|
||
|
|
clone(): Hero {
|
||
|
|
return Object.assign(new Hero(), this);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/sizer.component.ts]" value="import { Component, EventEmitter, Input, Output } from '@angular/core';
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'my-sizer',
|
||
|
|
template: `
|
||
|
|
<div>
|
||
|
|
<button (click)="dec()" title="smaller">-</button>
|
||
|
|
<button (click)="inc()" title="bigger">+</button>
|
||
|
|
<label [style.font-size.px]="size">FontSize: {{size}}px</label>
|
||
|
|
</div>`
|
||
|
|
})
|
||
|
|
export class SizerComponent {
|
||
|
|
@Input() size: number | string;
|
||
|
|
@Output() sizeChange = new EventEmitter<number>();
|
||
|
|
|
||
|
|
dec() { this.resize(-1); }
|
||
|
|
inc() { this.resize(+1); }
|
||
|
|
|
||
|
|
resize(delta: number) {
|
||
|
|
this.size = Math.min(40, Math.max(8, +this.size + delta));
|
||
|
|
this.sizeChange.emit(this.size);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[main.ts]" value="import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
|
||
|
|
|
||
|
|
import { AppModule } from './app/app.module';
|
||
|
|
|
||
|
|
platformBrowserDynamic().bootstrapModule(AppModule);
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/app.component.css]" value="a.to-toc { margin: 30px 0; }
|
||
|
|
button { font-size: 100%; margin: 0 2px; }
|
||
|
|
div[clickable] {cursor: pointer; max-width: 200px; margin: 16px 0}
|
||
|
|
#noTrackByCnt, #withTrackByCnt {color: darkred; max-width: 450px; margin: 4px;}
|
||
|
|
img {height: 100px;}
|
||
|
|
.box {border: 1px solid black; padding: 6px; max-width: 450px;}
|
||
|
|
.child-div {margin-left: 1em; font-weight: normal}
|
||
|
|
.context {margin-left: 1em;}
|
||
|
|
.hidden {display: none}
|
||
|
|
.parent-div {margin-top: 1em; font-weight: bold}
|
||
|
|
.special {font-weight:bold; font-size: x-large}
|
||
|
|
.bad {color: red;}
|
||
|
|
.saveable {color: limegreen;}
|
||
|
|
.curly, .modified {font-family: "Brush Script MT"}
|
||
|
|
.toe {margin-left: 1em; font-style: italic;}
|
||
|
|
little-hero {color:blue; font-size: smaller; background-color: Turquoise }
|
||
|
|
.to-toc {margin-top: 10px; display: block}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[styles.css]" value="/* Master Styles */
|
||
|
|
h1 {
|
||
|
|
color: #369;
|
||
|
|
font-family: Arial, Helvetica, sans-serif;
|
||
|
|
font-size: 250%;
|
||
|
|
}
|
||
|
|
h2, h3 {
|
||
|
|
color: #444;
|
||
|
|
font-family: Arial, Helvetica, sans-serif;
|
||
|
|
font-weight: lighter;
|
||
|
|
}
|
||
|
|
body {
|
||
|
|
margin: 2em;
|
||
|
|
}
|
||
|
|
body, input[text], button {
|
||
|
|
color: #888;
|
||
|
|
font-family: Cambria, Georgia;
|
||
|
|
}
|
||
|
|
a {
|
||
|
|
cursor: pointer;
|
||
|
|
cursor: hand;
|
||
|
|
}
|
||
|
|
button {
|
||
|
|
font-family: Arial;
|
||
|
|
background-color: #eee;
|
||
|
|
border: none;
|
||
|
|
padding: 5px 10px;
|
||
|
|
border-radius: 4px;
|
||
|
|
cursor: pointer;
|
||
|
|
cursor: hand;
|
||
|
|
}
|
||
|
|
button:hover {
|
||
|
|
background-color: #cfd8dc;
|
||
|
|
}
|
||
|
|
button:disabled {
|
||
|
|
background-color: #eee;
|
||
|
|
color: #aaa;
|
||
|
|
cursor: auto;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Navigation link styles */
|
||
|
|
nav a {
|
||
|
|
padding: 5px 10px;
|
||
|
|
text-decoration: none;
|
||
|
|
margin-right: 10px;
|
||
|
|
margin-top: 10px;
|
||
|
|
display: inline-block;
|
||
|
|
background-color: #eee;
|
||
|
|
border-radius: 4px;
|
||
|
|
}
|
||
|
|
nav a:visited, a:link {
|
||
|
|
color: #607D8B;
|
||
|
|
}
|
||
|
|
nav a:hover {
|
||
|
|
color: #039be5;
|
||
|
|
background-color: #CFD8DC;
|
||
|
|
}
|
||
|
|
nav a.active {
|
||
|
|
color: #039be5;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* items class */
|
||
|
|
.items {
|
||
|
|
margin: 0 0 2em 0;
|
||
|
|
list-style-type: none;
|
||
|
|
padding: 0;
|
||
|
|
width: 24em;
|
||
|
|
}
|
||
|
|
.items li {
|
||
|
|
cursor: pointer;
|
||
|
|
position: relative;
|
||
|
|
left: 0;
|
||
|
|
background-color: #EEE;
|
||
|
|
margin: .5em;
|
||
|
|
padding: .3em 0;
|
||
|
|
height: 1.6em;
|
||
|
|
border-radius: 4px;
|
||
|
|
}
|
||
|
|
.items li:hover {
|
||
|
|
color: #607D8B;
|
||
|
|
background-color: #DDD;
|
||
|
|
left: .1em;
|
||
|
|
}
|
||
|
|
.items li.selected {
|
||
|
|
background-color: #CFD8DC;
|
||
|
|
color: white;
|
||
|
|
}
|
||
|
|
.items li.selected:hover {
|
||
|
|
background-color: #BBD8DC;
|
||
|
|
}
|
||
|
|
.items .text {
|
||
|
|
position: relative;
|
||
|
|
top: -3px;
|
||
|
|
}
|
||
|
|
.items .badge {
|
||
|
|
display: inline-block;
|
||
|
|
font-size: small;
|
||
|
|
color: white;
|
||
|
|
padding: 0.8em 0.7em 0 0.7em;
|
||
|
|
background-color: #607D8B;
|
||
|
|
line-height: 1em;
|
||
|
|
position: relative;
|
||
|
|
left: -1px;
|
||
|
|
top: -4px;
|
||
|
|
height: 1.8em;
|
||
|
|
margin-right: .8em;
|
||
|
|
border-radius: 4px 0 0 4px;
|
||
|
|
}
|
||
|
|
/* everywhere else */
|
||
|
|
* {
|
||
|
|
font-family: Arial, Helvetica, sans-serif;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[template-syntax.css]" value="fieldset {border-style:none}
|
||
|
|
img {height: 100px;}
|
||
|
|
.box {border: 1px solid black; padding:3px}
|
||
|
|
.child-div {margin-left: 1em; font-weight: normal}
|
||
|
|
.hidden {display: none}
|
||
|
|
.parent-div {margin-top: 1em; font-weight: bold}
|
||
|
|
.special {font-weight:bold; font-size: x-large}
|
||
|
|
.bad {color: red;}
|
||
|
|
.saveable {color: limegreen;}
|
||
|
|
.curly, .modified {font-family: "Brush Script MT"}
|
||
|
|
.toe {margin-left: 1em; font-style: italic;}
|
||
|
|
little-hero {color:blue; font-size: smaller; background-color: Turquoise }
|
||
|
|
.to-toc {margin-top: 10px; display: block}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/app.component.html]" value="<a id="toc"></a>
|
||
|
|
<h1>Template Syntax</h1>
|
||
|
|
<a href="#interpolation">Interpolation</a><br>
|
||
|
|
<a href="#expression-context">Expression context</a><br>
|
||
|
|
<a href="#statement-context">Statement context</a><br>
|
||
|
|
<a href="#mental-model">Mental Model</a><br>
|
||
|
|
<a href="#buttons">Buttons</a><br>
|
||
|
|
<a href="#prop-vs-attrib">Properties vs. Attributes</a><br>
|
||
|
|
<br>
|
||
|
|
<a href="#property-binding">Property Binding</a><br>
|
||
|
|
<div style="margin-left:8px">
|
||
|
|
<a href="#attribute-binding">Attribute Binding</a><br>
|
||
|
|
<a href="#class-binding">Class Binding</a><br>
|
||
|
|
<a href="#style-binding">Style Binding</a><br>
|
||
|
|
</div>
|
||
|
|
<br>
|
||
|
|
<a href="#event-binding">Event Binding</a><br>
|
||
|
|
<a href="#two-way">Two-way Binding</a><br>
|
||
|
|
<br>
|
||
|
|
<div>Directives</div>
|
||
|
|
<div style="margin-left:8px">
|
||
|
|
<a href="#ngModel">NgModel (two-way) Binding</a><br>
|
||
|
|
<a href="#ngClass">NgClass Binding</a><br>
|
||
|
|
<a href="#ngStyle">NgStyle Binding</a><br>
|
||
|
|
<a href="#ngIf">NgIf</a><br>
|
||
|
|
<a href="#ngFor">NgFor</a><br>
|
||
|
|
<div style="margin-left:8px">
|
||
|
|
<a href="#ngFor-index">NgFor with index</a><br>
|
||
|
|
<a href="#ngFor-trackBy">NgFor with trackBy</a><br>
|
||
|
|
</div>
|
||
|
|
<a href="#ngSwitch">NgSwitch</a><br>
|
||
|
|
</div>
|
||
|
|
<br>
|
||
|
|
<a href="#ref-vars">Template reference variables</a><br>
|
||
|
|
<a href="#inputs-and-outputs">Inputs and outputs</a><br>
|
||
|
|
<a href="#pipes">Pipes</a><br>
|
||
|
|
<a href="#safe-navigation-operator">Safe navigation operator <i>?.</i></a><br>
|
||
|
|
<a href="#enums">Enums</a><br>
|
||
|
|
|
||
|
|
<!-- Interpolation and expressions -->
|
||
|
|
<hr><h2 id="interpolation">Interpolation</h2>
|
||
|
|
|
||
|
|
<p>My current hero is {{currentHero.name}}</p>
|
||
|
|
|
||
|
|
<h3>
|
||
|
|
{{title}}
|
||
|
|
<img src="{{heroImageUrl}}" style="height:30px">
|
||
|
|
</h3>
|
||
|
|
|
||
|
|
<!-- "The sum of 1 + 1 is 2" -->
|
||
|
|
<p>The sum of 1 + 1 is {{1 + 1}}</p>
|
||
|
|
|
||
|
|
<!-- "The sum of 1 + 1 is not 4" -->
|
||
|
|
<p>The sum of 1 + 1 is not {{1 + 1 + getVal()}}</p>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<hr><h2 id="expression-context">Expression context</h2>
|
||
|
|
|
||
|
|
<p>Component expression context (&#123;&#123;title&#125;&#125;, [hidden]="isUnchanged")</p>
|
||
|
|
<div class="context">
|
||
|
|
{{title}}
|
||
|
|
<span [hidden]="isUnchanged">changed</span>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
<p>Template input variable expression context (let hero)</p>
|
||
|
|
<!-- template hides the following; plenty of examples later -->
|
||
|
|
<template>
|
||
|
|
<div *ngFor="let hero of heroes">{{hero.name}}</div>
|
||
|
|
</template>
|
||
|
|
|
||
|
|
<p>Template reference variable expression context (#heroInput)</p>
|
||
|
|
<div (keyup)="0" class="context">
|
||
|
|
Type something:
|
||
|
|
<input #heroInput> {{heroInput.value}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<hr><h2 id="statement-context">Statement context</h2>
|
||
|
|
|
||
|
|
<p>Component statement context ( (click)="onSave() )
|
||
|
|
<div class="context">
|
||
|
|
<button (click)="deleteHero()">Delete hero</button>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>Template $event statement context</p>
|
||
|
|
<div class="context">
|
||
|
|
<button (click)="onSave($event)">Save</button>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>Template input variable statement context (let hero)</p>
|
||
|
|
<!-- template hides the following; plenty of examples later -->
|
||
|
|
<div class="context">
|
||
|
|
<button *ngFor="let hero of heroes" (click)="deleteHero(hero)">{{hero.name}}</button>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>Template reference variable statement context (#heroForm)</p>
|
||
|
|
<div class="context">
|
||
|
|
<form #heroForm (ngSubmit)="onSubmit(heroForm)"> ... </form>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- New Mental Model -->
|
||
|
|
<hr><h2 id="mental-model">New Mental Model</h2>
|
||
|
|
|
||
|
|
<!--<img src="http://www.wpclipart.com/cartoon/people/hero/hero_silhoutte_T.png">-->
|
||
|
|
<!-- Public Domain terms of use: http://www.wpclipart.com/terms.html -->
|
||
|
|
<div class="special">Mental Model</div>
|
||
|
|
<img src="images/hero.png">
|
||
|
|
<button disabled>Save</button>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
<!-- Normal HTML -->
|
||
|
|
<div class="special">Mental Model</div>
|
||
|
|
<!-- Wow! A new element! -->
|
||
|
|
<hero-detail></hero-detail>
|
||
|
|
</div>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
<!-- Bind button disabled state to `isUnchanged` property -->
|
||
|
|
<button [disabled]="isUnchanged">Save</button>
|
||
|
|
</div>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
<img [src] = "heroImageUrl">
|
||
|
|
<hero-detail [hero]="currentHero"></hero-detail>
|
||
|
|
<div [ngClass] = "{selected: isSelected}"></div>
|
||
|
|
</div>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<button (click) = "onSave()">Save</button>
|
||
|
|
<hero-detail (deleteRequest)="deleteHero()"></hero-detail>
|
||
|
|
<div (myClick)="clicked=$event" clickable>click me</div>
|
||
|
|
{{clicked}}
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
Hero Name:
|
||
|
|
<input [(ngModel)]="heroName">
|
||
|
|
{{heroName}}
|
||
|
|
</div>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<button [attr.aria-label]="help">help</button>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<div [class.special]="isSpecial">Special</div>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<button [style.color] = "isSpecial ? 'red' : 'green'">
|
||
|
|
button</button>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- property vs. attribute -->
|
||
|
|
<hr><h2 id="prop-vs-attrib">Property vs. Attribute (img examples)</h2>
|
||
|
|
<!-- examine the following <img> tag in the browser tools -->
|
||
|
|
<img src="images/ng-logo.png"
|
||
|
|
[src]="heroImageUrl">
|
||
|
|
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<img [src]="iconUrl"/>
|
||
|
|
<img bind-src="heroImageUrl"/>
|
||
|
|
<img [attr.src]="villainImageUrl"/>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- buttons -->
|
||
|
|
<hr><h2 id="buttons">Buttons</h2>
|
||
|
|
|
||
|
|
<button>Enabled (but does nothing)</button>
|
||
|
|
<button disabled>Disabled</button>
|
||
|
|
<button disabled=false>Still disabled</button>
|
||
|
|
<br><br>
|
||
|
|
<button disabled>disabled by attribute</button>
|
||
|
|
<button [disabled]="isUnchanged">disabled by property binding</button>
|
||
|
|
<br><br>
|
||
|
|
<button bind-disabled="isUnchanged" on-click="onSave($event)">Disabled Cancel</button>
|
||
|
|
<button [disabled]="!canSave" (click)="onSave($event)">Enabled Save</button>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- property binding -->
|
||
|
|
<hr><h2 id="property-binding">Property Binding</h2>
|
||
|
|
|
||
|
|
<img [src]="heroImageUrl">
|
||
|
|
<button [disabled]="isUnchanged">Cancel is disabled</button>
|
||
|
|
<div [ngClass]="classes">[ngClass] binding to the classes property</div>
|
||
|
|
<hero-detail [hero]="currentHero"></hero-detail>
|
||
|
|
<img bind-src="heroImageUrl">
|
||
|
|
|
||
|
|
<!-- ERROR: HeroDetailComponent.hero expects a
|
||
|
|
Hero object, not the string "currentHero" -->
|
||
|
|
<div *ngIf="false">
|
||
|
|
<hero-detail hero="currentHero"></hero-detail>
|
||
|
|
</div>
|
||
|
|
<hero-detail prefix="You are my" [hero]="currentHero"></hero-detail>
|
||
|
|
|
||
|
|
<p><img src="{{heroImageUrl}}"> is the <i>interpolated</i> image.</p>
|
||
|
|
<p><img [src]="heroImageUrl"> is the <i>property bound</i> image.</p>
|
||
|
|
|
||
|
|
<p><span>"{{title}}" is the <i>interpolated</i> title.</span></p>
|
||
|
|
<p>"<span [innerHTML]="title"></span>" is the <i>property bound</i> title.</p>
|
||
|
|
|
||
|
|
<!--
|
||
|
|
Angular generates warnings for these two lines as it sanitizes them
|
||
|
|
WARNING: sanitizing HTML stripped some content (see http://g.co/ng/security#xss).
|
||
|
|
-->
|
||
|
|
<p><span>"{{evilTitle}}" is the <i>interpolated</i> evil title.</span></p>
|
||
|
|
<p>"<span [innerHTML]="evilTitle"></span>" is the <i>property bound</i> evil title.</p>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- attribute binding -->
|
||
|
|
<hr><h2 id="attribute-binding">Attribute Binding</h2>
|
||
|
|
|
||
|
|
<!-- create and set a colspan attribute -->
|
||
|
|
<table border=1>
|
||
|
|
<!-- expression calculates colspan=2 -->
|
||
|
|
<tr><td [attr.colspan]="1 + 1">One-Two</td></tr>
|
||
|
|
|
||
|
|
<!-- ERROR: There is no `colspan` property to set!
|
||
|
|
<tr><td colspan="{{1 + 1}}">Three-Four</td></tr>
|
||
|
|
-->
|
||
|
|
|
||
|
|
<tr><td>Five</td><td>Six</td></tr>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
<br>
|
||
|
|
<!-- create and set an aria attribute for assistive technology -->
|
||
|
|
<button [attr.aria-label]="actionName">{{actionName}} with Aria</button>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<!-- The following effects are not discussed in the chapter -->
|
||
|
|
<div>
|
||
|
|
<!-- any use of [attr.disabled] creates the disabled attribute -->
|
||
|
|
<button [attr.disabled]="isUnchanged">Disabled</button>
|
||
|
|
|
||
|
|
<button [attr.disabled]="!isUnchanged">Disabled as well</button>
|
||
|
|
|
||
|
|
<!-- we'd have to remove it with property binding -->
|
||
|
|
<button disabled [disabled]="false">Enabled (but inert)</button>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- class binding -->
|
||
|
|
<hr><h2 id="class-binding">Class Binding</h2>
|
||
|
|
|
||
|
|
<!-- standard class attribute setting -->
|
||
|
|
<div class="bad curly special">Bad curly special</div>
|
||
|
|
|
||
|
|
<!-- reset/override all class names with a binding -->
|
||
|
|
<div class="bad curly special"
|
||
|
|
[class]="badCurly">Bad curly</div>
|
||
|
|
|
||
|
|
<!-- toggle the "special" class on/off with a property -->
|
||
|
|
<div [class.special]="isSpecial">The class binding is special</div>
|
||
|
|
|
||
|
|
<!-- binding to `class.special` trumps the class attribute -->
|
||
|
|
<div class="special"
|
||
|
|
[class.special]="!isSpecial">This one is not so special</div>
|
||
|
|
|
||
|
|
<div bind-class.special="isSpecial">This class binding is special too</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!--style binding -->
|
||
|
|
<hr><h2 id="style-binding">Style Binding</h2>
|
||
|
|
|
||
|
|
<button [style.color] = "isSpecial ? 'red': 'green'">Red</button>
|
||
|
|
<button [style.background-color]="canSave ? 'cyan': 'grey'" >Save</button>
|
||
|
|
|
||
|
|
<button [style.font-size.em]="isSpecial ? 3 : 1" >Big</button>
|
||
|
|
<button [style.font-size.%]="!isSpecial ? 150 : 50" >Small</button>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- event binding -->
|
||
|
|
<hr><h2 id="event-binding">Event Binding</h2>
|
||
|
|
|
||
|
|
<button (click)="onSave()">Save</button>
|
||
|
|
|
||
|
|
<button on-click="onSave()">On Save</button>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
<!-- `myClick` is an event on the custom `ClickDirective` -->
|
||
|
|
<div (myClick)="clickMessage=$event" clickable>click with myClick</div>
|
||
|
|
{{clickMessage}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
<!-- binding to a nested component -->
|
||
|
|
<hero-detail (deleteRequest)="deleteHero($event)" [hero]="currentHero"></hero-detail>
|
||
|
|
<br>
|
||
|
|
|
||
|
|
<big-hero-detail
|
||
|
|
(deleteRequest)="deleteHero($event)"
|
||
|
|
[hero]="currentHero">
|
||
|
|
</big-hero-detail>
|
||
|
|
|
||
|
|
<div class="parent-div" (click)="onClickMe($event)" clickable>Click me
|
||
|
|
<div class="child-div">Click me too!</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<!-- Will save only once -->
|
||
|
|
<div (click)="onSave()" clickable>
|
||
|
|
<button (click)="onSave()">Save, no propagation</button>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<!-- Will save twice -->
|
||
|
|
<div (click)="onSave()" clickable>
|
||
|
|
<button (click)="onSave() || true">Save w/ propagation</button>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<hr><h2 id="two-way">Two-way Binding</h2>
|
||
|
|
<div id="two-way-1">
|
||
|
|
<my-sizer [(size)]="fontSizePx"></my-sizer>
|
||
|
|
<div [style.font-size.px]="fontSizePx">Resizable Text</div>
|
||
|
|
<label>FontSize (px): <input [(ngModel)]="fontSizePx"></label>
|
||
|
|
</div>
|
||
|
|
<br>
|
||
|
|
<div id="two-way-2">
|
||
|
|
<h3>De-sugared two-way binding</h3>
|
||
|
|
<my-sizer [size]="fontSizePx" (sizeChange)="fontSizePx=$event"></my-sizer>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- Two way data binding unwound;
|
||
|
|
passing the changed display value to the event handler via `$event` -->
|
||
|
|
<hr><h2 id="ngModel">NgModel (two-way) Binding</h2>
|
||
|
|
|
||
|
|
<h3>Result: {{currentHero.name}}</h3>
|
||
|
|
|
||
|
|
<input [value]="currentHero.name"
|
||
|
|
(input)="currentHero.name=$event.target.value" >
|
||
|
|
without NgModel
|
||
|
|
<br>
|
||
|
|
<input [(ngModel)]="currentHero.name">
|
||
|
|
[(ngModel)]
|
||
|
|
<br>
|
||
|
|
<input bindon-ngModel="currentHero.name">
|
||
|
|
bindon-ngModel
|
||
|
|
<br>
|
||
|
|
<input
|
||
|
|
[ngModel]="currentHero.name"
|
||
|
|
(ngModelChange)="currentHero.name=$event">
|
||
|
|
(ngModelChange) = "...name=$event"
|
||
|
|
<br>
|
||
|
|
<input
|
||
|
|
[ngModel]="currentHero.name"
|
||
|
|
(ngModelChange)="setUppercaseName($event)">
|
||
|
|
(ngModelChange) = "setUppercaseName($event)"
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- NgClass binding -->
|
||
|
|
<hr><h2 id="ngClass">NgClass Binding</h2>
|
||
|
|
|
||
|
|
<p>currentClasses returns {{currentClasses | json}}</p>
|
||
|
|
<div [ngClass]="currentClasses">This div is initially saveable, unchanged, and special</div>
|
||
|
|
|
||
|
|
<!-- not used in chapter -->
|
||
|
|
<br>
|
||
|
|
<label>saveable <input type="checkbox" [(ngModel)]="canSave"></label> |
|
||
|
|
<label>modified: <input type="checkbox" [value]="!isUnchanged" (change)="isUnchanged=!isUnchanged"></label> |
|
||
|
|
<label>special: <input type="checkbox" [(ngModel)]="isSpecial"></label>
|
||
|
|
<button (click)="setCurrentClasses()">Refresh currentClasses</button>
|
||
|
|
<br><br>
|
||
|
|
<div [ngClass]="currentClasses">
|
||
|
|
This div should be {{ canSave ? "": "not"}} saveable,
|
||
|
|
{{ isUnchanged ? "unchanged" : "modified" }} and,
|
||
|
|
{{ isSpecial ? "": "not"}} special after clicking "refresh".</div>
|
||
|
|
<br><br>
|
||
|
|
|
||
|
|
<div [ngClass]="isSpecial ? 'special' : ''">This div is special</div>
|
||
|
|
|
||
|
|
<div class="bad curly special">Bad curly special</div>
|
||
|
|
<div [ngClass]="{bad:false, curly:true, special:true}">Curly special</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- NgStyle binding -->
|
||
|
|
<hr><h2 id="ngStyle">NgStyle Binding</h2>
|
||
|
|
|
||
|
|
<div [style.font-size]="isSpecial ? 'x-large' : 'smaller'" >
|
||
|
|
This div is x-large.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<h3>[ngStyle] binding to `currentStyles` - CSS property names</h3>
|
||
|
|
<p>currentStyles returns {{currentStyles | json}}</p>
|
||
|
|
<div [ngStyle]="currentStyles">
|
||
|
|
This div is initially italic, normal weight, and extra large (24px).
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<!-- not used in chapter -->
|
||
|
|
<br>
|
||
|
|
<label>italic: <input type="checkbox" [(ngModel)]="canSave"></label> |
|
||
|
|
<label>normal: <input type="checkbox" [(ngModel)]="isUnchanged"></label> |
|
||
|
|
<label>xlarge: <input type="checkbox" [(ngModel)]="isSpecial"></label>
|
||
|
|
<button (click)="setCurrentStyles()">Refresh currentStyles</button>
|
||
|
|
<br><br>
|
||
|
|
<div [ngStyle]="currentStyles">
|
||
|
|
This div should be {{ canSave ? "italic": "plain"}},
|
||
|
|
{{ isUnchanged ? "normal weight" : "bold" }} and,
|
||
|
|
{{ isSpecial ? "extra large": "normal size"}} after clicking "refresh".</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- NgIf binding -->
|
||
|
|
<hr><h2 id="ngIf">NgIf Binding</h2>
|
||
|
|
|
||
|
|
<hero-detail *ngIf="isActive"></hero-detail>
|
||
|
|
|
||
|
|
<div *ngIf="currentHero">Hello, {{currentHero.name}}</div>
|
||
|
|
<div *ngIf="nullHero">Hello, {{nullHero.name}}</div>
|
||
|
|
|
||
|
|
<!-- NgIf binding with template (no *) -->
|
||
|
|
|
||
|
|
<template [ngIf]="currentHero">Add {{currentHero.name}} with template</template>
|
||
|
|
|
||
|
|
<!-- Does not show because isActive is false! -->
|
||
|
|
<div>Hero Detail removed from DOM (via template) because isActive is false</div>
|
||
|
|
<template [ngIf]="isActive">
|
||
|
|
<hero-detail></hero-detail>
|
||
|
|
</template>
|
||
|
|
|
||
|
|
<!-- isSpecial is true -->
|
||
|
|
<div [class.hidden]="!isSpecial">Show with class</div>
|
||
|
|
<div [class.hidden]="isSpecial">Hide with class</div>
|
||
|
|
|
||
|
|
<!-- HeroDetail is in the DOM but hidden -->
|
||
|
|
<hero-detail [class.hidden]="isSpecial"></hero-detail>
|
||
|
|
|
||
|
|
<div [style.display]="isSpecial ? 'block' : 'none'">Show with style</div>
|
||
|
|
<div [style.display]="isSpecial ? 'none' : 'block'">Hide with style</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- NgFor binding -->
|
||
|
|
<hr><h2 id="ngFor">NgFor Binding</h2>
|
||
|
|
|
||
|
|
<div class="box">
|
||
|
|
<div *ngFor="let hero of heroes">{{hero.name}}</div>
|
||
|
|
</div>
|
||
|
|
<br>
|
||
|
|
|
||
|
|
<div class="box">
|
||
|
|
<!-- *ngFor w/ hero-detail Component -->
|
||
|
|
<hero-detail *ngFor="let hero of heroes" [hero]="hero"></hero-detail>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<h4 id="ngFor-index">*ngFor with index</h4>
|
||
|
|
<p>with <i>semi-colon</i> separator</p>
|
||
|
|
<div class="box">
|
||
|
|
<div *ngFor="let hero of heroes; let i=index">{{i + 1}} - {{hero.name}}</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>with <i>comma</i> separator</p>
|
||
|
|
<div class="box">
|
||
|
|
<!-- Ex: "1 - Hercules" -->
|
||
|
|
<div *ngFor="let hero of heroes, let i=index">{{i + 1}} - {{hero.name}}</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<h4 id="ngFor-trackBy">*ngFor trackBy</h4>
|
||
|
|
<button (click)="resetHeroes()">Reset heroes</button>
|
||
|
|
<button (click)="changeIds()">Change ids</button>
|
||
|
|
<button (click)="clearTrackByCounts()">Clear counts</button>
|
||
|
|
|
||
|
|
<p><i>without</i> trackBy</p>
|
||
|
|
<div class="box">
|
||
|
|
<div #noTrackBy *ngFor="let hero of heroes">({{hero.id}}) {{hero.name}}</div>
|
||
|
|
|
||
|
|
<div id="noTrackByCnt" *ngIf="heroesNoTrackByCount" >
|
||
|
|
Hero DOM elements change #{{heroesNoTrackByCount}} without trackBy
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>with trackBy</p>
|
||
|
|
<div class="box">
|
||
|
|
<div #withTrackBy *ngFor="let hero of heroes; trackBy: trackByHeroes">({{hero.id}}) {{hero.name}}</div>
|
||
|
|
|
||
|
|
<div id="withTrackByCnt" *ngIf="heroesWithTrackByCount">
|
||
|
|
Hero DOM elements change #{{heroesWithTrackByCount}} with trackBy
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<br><br><br>
|
||
|
|
|
||
|
|
<p>with trackBy and <i>semi-colon</i> separator</p>
|
||
|
|
<div class="box">
|
||
|
|
<div *ngFor="let hero of heroes; trackBy: trackByHeroes">
|
||
|
|
({{hero.id}}) {{hero.name}}
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>with trackBy and <i>comma</i> separator</p>
|
||
|
|
<div class="box">
|
||
|
|
<div *ngFor="let hero of heroes, trackBy: trackByHeroes">({{hero.id}}) {{hero.name}}</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>with trackBy and <i>space</i> separator</p>
|
||
|
|
<div class="box">
|
||
|
|
<div *ngFor="let hero of heroes trackBy: trackByHeroes">({{hero.id}}) {{hero.name}}</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>with <i>generic</i> trackById function</p>
|
||
|
|
<div class="box">
|
||
|
|
<div *ngFor="let hero of heroes, trackBy: trackById">({{hero.id}}) {{hero.name}}</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- NgSwitch binding -->
|
||
|
|
<hr><h2 id="ngSwitch">NgSwitch Binding</h2>
|
||
|
|
|
||
|
|
<div>Pick your favorite hero</div>
|
||
|
|
<p>
|
||
|
|
<ng-container *ngFor="let h of heroes">
|
||
|
|
<label>
|
||
|
|
<input type="radio" name="heroes" [(ngModel)]="currentHero" [value]="h">{{h.name}}
|
||
|
|
</label>
|
||
|
|
</ng-container>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<div [ngSwitch]="currentHero.emotion">
|
||
|
|
<happy-hero *ngSwitchCase="'happy'" [hero]="currentHero"></happy-hero>
|
||
|
|
<sad-hero *ngSwitchCase="'sad'" [hero]="currentHero"></sad-hero>
|
||
|
|
<confused-hero *ngSwitchCase="'confused'" [hero]="currentHero"></confused-hero>
|
||
|
|
<div *ngSwitchCase="'confused'">Are you as confused as {{currentHero.name}}?</div>
|
||
|
|
<unknown-hero *ngSwitchDefault [hero]="currentHero"></unknown-hero>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- template reference variable -->
|
||
|
|
<hr><h2 id="ref-vars">Template reference variables</h2>
|
||
|
|
|
||
|
|
<input #phone placeholder="phone number">
|
||
|
|
|
||
|
|
<!-- lots of other elements -->
|
||
|
|
|
||
|
|
<!-- phone refers to the input element; pass its `value` to an event handler -->
|
||
|
|
<button (click)="callPhone(phone.value)">Call</button>
|
||
|
|
|
||
|
|
<input ref-fax placeholder="fax number">
|
||
|
|
<button (click)="callFax(fax.value)">Fax</button>
|
||
|
|
|
||
|
|
<!-- btn refers to the button element; show its disabled state -->
|
||
|
|
<button #btn disabled [innerHTML]="'disabled by attribute: '+btn.disabled"></button>
|
||
|
|
|
||
|
|
<h4>Example Form</h4>
|
||
|
|
<hero-form [hero]="currentHero"></hero-form>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- inputs and output -->
|
||
|
|
<hr><h2 id="inputs-and-outputs">Inputs and Outputs</h2>
|
||
|
|
|
||
|
|
<img [src]="iconUrl"/>
|
||
|
|
<button (click)="onSave()">Save</button>
|
||
|
|
|
||
|
|
<hero-detail [hero]="currentHero" (deleteRequest)="deleteHero($event)">
|
||
|
|
</hero-detail>
|
||
|
|
|
||
|
|
<div (myClick)="clickMessage2=$event" clickable>myClick2</div>
|
||
|
|
{{clickMessage2}}
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- Pipes -->
|
||
|
|
<hr><h2 id="pipes">Pipes</h2>
|
||
|
|
|
||
|
|
<div>Title through uppercase pipe: {{title | uppercase}}</div>
|
||
|
|
|
||
|
|
<!-- Pipe chaining: convert title to uppercase, then to lowercase -->
|
||
|
|
<div>
|
||
|
|
Title through a pipe chain:
|
||
|
|
{{title | uppercase | lowercase}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<!-- pipe with configuration argument => "February 25, 1970" -->
|
||
|
|
<div>Birthdate: {{currentHero?.birthdate | date:'longDate'}}</div>
|
||
|
|
|
||
|
|
<div>{{currentHero | json}}</div>
|
||
|
|
|
||
|
|
<div>Birthdate: {{(currentHero?.birthdate | date:'longDate') | uppercase}}</div>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
<!-- pipe price to USD and display the $ symbol -->
|
||
|
|
<label>Price: </label>{{product.price | currency:'USD':true}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- Null values and the safe navigation operator -->
|
||
|
|
<hr><h2 id="safe-navigation-operator">Safe navigation operator <i>?.</i></h2>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
The title is {{title}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
The current hero's name is {{currentHero?.name}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
The current hero's name is {{currentHero.name}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
<!--
|
||
|
|
The null hero's name is {{nullHero.name}}
|
||
|
|
|
||
|
|
See console log:
|
||
|
|
TypeError: Cannot read property 'name' of null in [null]
|
||
|
|
-->
|
||
|
|
|
||
|
|
<!--No hero, div not displayed, no error -->
|
||
|
|
<div *ngIf="nullHero">The null hero's name is {{nullHero.name}}</div>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
The null hero's name is {{nullHero && nullHero.name}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div>
|
||
|
|
<!-- No hero, no problem! -->
|
||
|
|
The null hero's name is {{nullHero?.name}}
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
<!-- TODO: discuss this in the Style binding section -->
|
||
|
|
<!-- enums in bindings -->
|
||
|
|
<hr><h2 id="enums">Enums in binding</h2>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
The name of the Color.Red enum is {{Color[Color.Red]}}.<br>
|
||
|
|
The current color is {{Color[color]}} and its number is {{color}}.<br>
|
||
|
|
<button [style.color]="Color[color]" (click)="colorToggle()">Enum Toggle</button>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<a class="to-toc" href="#toc">top</a>
|
||
|
|
|
||
|
|
|
||
|
|
<!--
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
-->"><input type="hidden" name="files[app/hero-form.component.html]" value="<div id=heroForm>
|
||
|
|
<form (ngSubmit)="onSubmit(heroForm)" #heroForm="ngForm">
|
||
|
|
<div class="form-group">
|
||
|
|
<label for="name">Name
|
||
|
|
<input class="form-control" name="name" required [(ngModel)]="hero.name">
|
||
|
|
</label>
|
||
|
|
</div>
|
||
|
|
<button type="submit" [disabled]="!heroForm.form.valid">Submit</button>
|
||
|
|
</form>
|
||
|
|
<div [hidden]="!heroForm.form.valid">
|
||
|
|
{{submitMessage}}
|
||
|
|
<div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<!--
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
-->"><input type="hidden" name="files[index.html]" value="<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<title>Template Syntax</title>
|
||
|
|
<script>document.write('<base href="' + document.location + '" />');</script>
|
||
|
|
<meta charset="UTF-8">
|
||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
|
|
<link rel="stylesheet" href="styles.css">
|
||
|
|
|
||
|
|
<!-- Polyfills -->
|
||
|
|
<script src="https://unpkg.com/core-js/client/shim.min.js"></script>
|
||
|
|
|
||
|
|
<script src="https://unpkg.com/zone.js@0.7.4?main=browser"></script>
|
||
|
|
<script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>
|
||
|
|
|
||
|
|
<script src="https://cdn.rawgit.com/angular/angular.io/b3c65a9/public/docs/_examples/_boilerplate/systemjs.config.web.js"></script>
|
||
|
|
<script>
|
||
|
|
System.import('main.js').catch(function(err){ console.error(err); });
|
||
|
|
</script>
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body>
|
||
|
|
<my-app>Loading...</my-app>
|
||
|
|
</body>
|
||
|
|
|
||
|
|
</html>
|
||
|
|
|
||
|
|
|
||
|
|
<!--
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
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