586 lines
16 KiB
HTML
586 lines
16 KiB
HTML
<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="import { Component } from '@angular/core';
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import { heroes } from './hero';
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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 {
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heroes = heroes;
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hero = this.heroes[0];
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heroTraits = [ 'honest', 'brave', 'considerate' ];
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// flags for the table
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attrDirs = true;
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strucDirs = true;
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divNgIf = false;
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showId = true;
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showDefaultTraits = true;
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showSad = true;
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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.ts]" value="import { NgModule } from '@angular/core';
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import { FormsModule } from '@angular/forms';
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import { BrowserModule } from '@angular/platform-browser';
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import { AppComponent } from './app.component';
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import { ContentComponent } from './content.component';
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import { heroComponents } from './hero.components';
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@NgModule({
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imports: [ BrowserModule, FormsModule ],
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declarations: [
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AppComponent,
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ContentComponent,
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heroComponents
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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/content.component.ts]" value="import { Component } from '@angular/core';
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@Component({
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selector: 'content-comp',
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template:
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`<div>
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<ng-content></ng-content>
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</div>`,
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styles: [ `
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div { border: medium dashed green; padding: 1em; width: 150px; text-align: center}
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`]
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})
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export class ContentComponent { }
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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.components.ts]" value="import { Component, Input } from '@angular/core';
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import { Hero } from './hero';
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@Component({
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selector: 'happy-hero',
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template: `Wow. You like {{hero.name}}. What a happy hero ... just like you.`
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})
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export class HappyHeroComponent {
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@Input() hero: Hero;
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}
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@Component({
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selector: 'sad-hero',
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template: `You like {{hero.name}}? Such a sad hero. Are you sad too?`
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})
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export class SadHeroComponent {
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@Input() hero: Hero;
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}
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@Component({
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selector: 'confused-hero',
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template: `Are you as confused as {{hero.name}}?`
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})
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export class ConfusedHeroComponent {
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@Input() hero: Hero;
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}
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@Component({
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selector: 'unknown-hero',
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template: `{{message}}`
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})
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export class UnknownHeroComponent {
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@Input() hero: Hero;
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get message() {
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return this.hero && this.hero.name ?
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`${this.hero.name} is strange and mysterious.` :
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'Are you feeling indecisive?';
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}
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}
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export const heroComponents =
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[ HappyHeroComponent, SadHeroComponent, ConfusedHeroComponent, UnknownHeroComponent ];
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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.ts]" value="export class Hero {
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id: number;
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name: string;
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emotion?: string;
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}
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export const heroes: Hero[] = [
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{ id: 1, name: 'Mr. Nice', emotion: 'happy'},
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{ id: 2, name: 'Narco', emotion: 'sad' },
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{ id: 3, name: 'Windstorm', emotion: 'confused' },
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{ id: 4, name: 'Magneta'}
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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[main.ts]" value="import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
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import { AppModule } from './app/app.module';
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platformBrowserDynamic().bootstrapModule(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.component.css]" value="button {
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min-width: 100px;
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font-size: 100%;
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}
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code, .code {
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background-color: #eee;
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color: black;
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font-family: Courier, sans-serif;
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font-size: 85%;
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}
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div.code {
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width: 400px;
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}
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.heroic {
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font-size: 150%;
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font-weight: bold;
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}
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hr {
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margin: 40px 0
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}
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td, th {
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text-align: left;
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vertical-align: top;
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}
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p span { color: red; font-size: 70%; }
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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[styles.css]" value="/* Master Styles */
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h1 {
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color: #369;
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font-family: Arial, Helvetica, sans-serif;
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font-size: 250%;
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}
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h2, h3 {
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color: #444;
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font-family: Arial, Helvetica, sans-serif;
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font-weight: lighter;
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}
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body {
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margin: 2em;
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}
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body, input[text], button {
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color: #888;
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font-family: Cambria, Georgia;
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}
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a {
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cursor: pointer;
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cursor: hand;
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}
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button {
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font-family: Arial;
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background-color: #eee;
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border: none;
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padding: 5px 10px;
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border-radius: 4px;
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cursor: pointer;
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cursor: hand;
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}
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button:hover {
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background-color: #cfd8dc;
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}
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button:disabled {
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background-color: #eee;
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color: #aaa;
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cursor: auto;
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}
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/* Navigation link styles */
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nav a {
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padding: 5px 10px;
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text-decoration: none;
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margin-right: 10px;
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margin-top: 10px;
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display: inline-block;
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background-color: #eee;
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border-radius: 4px;
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}
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nav a:visited, a:link {
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color: #607D8B;
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}
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nav a:hover {
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color: #039be5;
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background-color: #CFD8DC;
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}
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nav a.active {
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color: #039be5;
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}
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/* items class */
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.items {
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margin: 0 0 2em 0;
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list-style-type: none;
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padding: 0;
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width: 24em;
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}
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.items li {
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cursor: pointer;
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position: relative;
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left: 0;
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background-color: #EEE;
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margin: .5em;
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padding: .3em 0;
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height: 1.6em;
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border-radius: 4px;
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}
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.items li:hover {
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color: #607D8B;
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background-color: #DDD;
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left: .1em;
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}
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.items li.selected {
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background-color: #CFD8DC;
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color: white;
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}
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.items li.selected:hover {
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background-color: #BBD8DC;
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}
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.items .text {
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position: relative;
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top: -3px;
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}
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.items .badge {
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display: inline-block;
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font-size: small;
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color: white;
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padding: 0.8em 0.7em 0 0.7em;
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background-color: #607D8B;
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line-height: 1em;
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position: relative;
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left: -1px;
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top: -4px;
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height: 1.8em;
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margin-right: .8em;
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border-radius: 4px 0 0 4px;
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}
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/* everywhere else */
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* {
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font-family: Arial, Helvetica, sans-serif;
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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.component.html]" value="<h1>&lt;ng-container&gt;</h1>
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<div *ngIf="hero">{{hero.name}}</div>
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<hr>
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<h3>&lt;ng-container&gt; and CSS</h3>
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<p>Examples demonstrating issues with rigid CSS styles.</p>
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<button (click)="hero = hero ? null : heroes[0]">Toggle hero</button>
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<h4>#1 &lt;ng-container&gt; and &lt;p&gt;</h4>
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<p>
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I turned the corner
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<ng-container *ngIf="hero">
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and saw {{hero.name}}. I waved
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</ng-container>
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and continued on my way.
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</p>
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<p>
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I turned the corner
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<span *ngIf="hero">
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and saw {{hero.name}}. I waved
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</span>
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and continued on my way.
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</p>
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<h4>#2 &lt;ng-container&gt; and &lt;p&gt;</h4>
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<div *ngIf="hero">
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<p>
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{{hero.name}} is
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<ng-container *ngFor="let trait of heroTraits; let first=first; let last=last">
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<ng-container *ngIf="!first">,</ng-container>
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<ng-container *ngIf="last">and</ng-container>
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{{trait}}
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</ng-container>.
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</p>
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<p>
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{{hero.name}} is
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<span *ngFor="let trait of heroTraits; let first=first; let last=last">
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<span *ngIf="!first">,</span>
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<span *ngIf="last">and</span>
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{{trait}}
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</span>.
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</p>
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<br>
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<h4>#3 &lt;ng-container&gt; and &lt;p&gt;</h4>
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<p>
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<label><input type="checkbox" [checked]="showId" (change)="showId=!showId">Show ID</label>
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</p>
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<div>
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The <code>hero.id</code> in the &lt;span&gt;
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is caught by the <span>p-span</span> CSS:
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<p>
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<span *ngIf="showId">
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Id: ({{hero.id}})
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</span>
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Name: {{hero.name}}
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</p>
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</div>
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<div>
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The <code>hero.id</code> in the &lt;ng-container&gt;
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is unaffected by the <span>p-span</span> CSS:
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<p>
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<ng-container *ngIf="showId">
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Id: ({{hero.id}})
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</ng-container>
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Name: {{hero.name}}
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</p>
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</div>
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<div>
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The <code>hero.id</code> in the &lt;template *ngIf&gt; disappears:
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<p>
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<template *ngIf="showId">
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Id: ({{hero.id}})
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</template>
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Name: {{hero.name}}
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</p>
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</div>
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<div>
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The <code>hero.id</code> in the &lt;template [ngIf]&gt;
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is unaffected by the <span>p-span</span> CSS:
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<p>
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<template [ngIf]="showId">
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Id: ({{hero.id}})
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</template>
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Name: {{hero.name}}
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</p>
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</div>
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</div>
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<hr>
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<h3>&lt;ng-container&gt; and layout-sensitive elements</h3>
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<p>
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Examples demonstrating issues with layout-sensitive elements
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such as &lt;select&gt; and &lt;table&gt;.
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</p>
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<h4>#1 &lt;ng-container&gt; and &lt;options&gt;</h4>
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<p><i>&lt;select&gt; with &lt;span&gt;</i></p>
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<div>
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Pick your favorite hero
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(<label><input type="checkbox" checked (change)="showSad=!showSad">show sad</label>)
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</div>
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<select [(ngModel)]="hero">
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<span *ngFor="let h of heroes">
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<span *ngIf="showSad || h?.emotion != 'sad'">
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<option [ngValue]="h">{{h.name}} ({{h?.emotion}})</option>
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</span>
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</span>
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</select>
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<p><i>&lt;select&gt; with &lt;ng-container&gt;</i></p>
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<div>
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Pick your favorite hero
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(<label><input type="checkbox" checked (change)="showSad=!showSad">show sad</label>)
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</div>
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<select [(ngModel)]="hero">
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<ng-container *ngFor="let h of heroes">
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<ng-container *ngIf="showSad || h?.emotion != 'sad'">
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<option [ngValue]="h">{{h.name}} ({{h?.emotion}})</option>
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</ng-container>
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</ng-container>
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</select>
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<br><br><br><br>
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<h4>#2 &lt;ng-container&gt; and &lt;options&gt;</h4>
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<p>
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<label (change)="traitPicker.value=showDefaultTraits ? 'loyal' : heroTraits[0]">
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<input type="checkbox"
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[checked]="showDefaultTraits"
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(change)="showDefaultTraits=!showDefaultTraits">Show default traits
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</label>
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</p>
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<p>Options with &lt;ng-container&gt;</p>
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<select #traitPicker>
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<ng-container *ngIf="showDefaultTraits">
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<!-- Default traits -->
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<option value="loyal">LOYAL</option>
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<option value="clean">CLEAN</option>
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<option value="reverent">REVERENT</option>
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</ng-container>
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<option *ngFor="let trait of heroTraits" [value]="trait">
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{{ trait | uppercase }}
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</option>
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</select>
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<p>Options with &lt;span&gt;</p>
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<select>
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<!-- Default traits are always excluded because intermediate <span> is illegal -->
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<span *ngIf="showDefaultTraits">
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<option value="loyal">LOYAL</option>
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<option value="clean">CLEAN</option>
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<option value="reverent">REVERENT</option>
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</span>
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<option *ngFor="let trait of heroTraits" [value]="trait">
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{{ trait | uppercase }}
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</option>
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</select>
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<br>
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<h4>&lt;ng-container&gt; and &lt;table&gt;</h4>
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<p>
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<label><input type="checkbox" checked (change)="attrDirs=!attrDirs">Attribute directives</label>
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<label><input type="checkbox" checked (change)="strucDirs=!strucDirs">Structural directives</label>
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<label><input type="checkbox" (change)="divNgIf=!divNgIf">div with *ngIf</label>
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</p>
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<table>
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<tr>
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<th width="20%">Directive</th>
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<th width="10%">Type</th>
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<th>Description</th>
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</tr>
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<tr *ngIf="attrDirs">
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<td>NgClass</td><td>A</td><td>Add or remove multiple CSS classes.</td>
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</tr>
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<ng-container *ngIf="divNgIf">
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<div *ngIf="strucDirs">
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<tr>
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<td>xxx</td><td>S</td><td>div with *ngIf formats crazy.</td>
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</tr>
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<tr>
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<td>yyy</td><td>S</td><td>div with *ngIf formats crazy.</td>
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</tr>
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</div>
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</ng-container>
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<ng-container *ngIf="strucDirs">
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<tr>
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<td>NgFor</td><td>S</td><td>Repeat the template for each item in a list.</td>
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</tr>
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<tr>
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<td>NgIf</td><td>S</td><td>Add or remove DOM elements.</td>
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</tr>
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</ng-container>
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<ng-container *ngIf="attrDirs">
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<tr>
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<td>NgStyle</td><td>A</td><td>Add or remove multiple style attributes.</td>
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</tr>
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</ng-container>
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<tr *ngIf="strucDirs">
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<td>NgSwitch</td><td>S</td><td>Include in DOM if case matches the switch value.</td>
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</tr>
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</table>
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<hr>
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<h3>Do not confuse &lt;ng-container&gt; with &lt;ng-content&gt;</h3>
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<p>&lt;ng-container&gt;Inside ng-container&lt;/ng-container&gt;</p>
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<ng-container>Inside ng-container</ng-container>
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<p>&lt;ng-content&gt;this is an Angular parse error&lt;/ng-content&gt;</p>
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<!-- <ng-content>this is an Angular parse error</ng-content> -->
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<div class="code">Template parse errors:<br>
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&lt;ng-content&gt; element cannot have content.</div>
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<p>Demo of &lt;/ng-content&gt;</p>
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<content-comp>
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Projected content
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</content-comp>
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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[index.html]" value="<!DOCTYPE html>
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<html>
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<head>
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<title>Angular &lt;ng-container&gt;</title>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="stylesheet" href="styles.css">
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<!-- Polyfills -->
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<script src="https://unpkg.com/core-js/client/shim.min.js"></script>
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<script src="https://unpkg.com/zone.js@0.7.4?main=browser"></script>
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<script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>
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<script src="https://cdn.rawgit.com/angular/angular.io/b3c65a9/public/docs/_examples/_boilerplate/systemjs.config.web.js"></script>
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<script>
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System.import('main.js').catch(function(err){ console.error(err); });
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</script>
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</head>
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<body>
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<my-app>Loading...</my-apps>
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</body>
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</html>
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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="tags[0]" value="angular"><input type="hidden" name="tags[1]" value="example"><input type="hidden" name="tags[2]" value="ngcontainer"><input type="hidden" name="tags[3]" value="structural"><input type="hidden" name="tags[4]" value="directives"><input type="hidden" name="private" value="true"><input type="hidden" name="description" value="Angular Example - <ng-container>"></form><script>document.getElementById("mainForm").submit();</script></body></html> |