feat(docs-infra): allow notification bar to show arbitrary content (#25020)

This change generalises the notification bar rendering to allow
more complex content to be displayed.

Now you must provide the full HTML of the notification message
when using `<aio-notification>`.

Also you can control whether clicking the content triggers the
notification to close or not.

This will support the new notification specified in "Other Items : 3" of
[#24140](https://github.com/angular/angular/issues/24140#issuecomment-397480410)

PR Close #25020

aio/src/app/app.component.html

@@ -7,14 +7,15 @@
 <mat-toolbar color="primary" class="app-toolbar no-print" [class.transitioning]="isTransitioning">
   <mat-toolbar-row class="notification-container">
     <aio-notification
-      icon="insert_comment"
-      iconLabel="Announcement"
-      buttonText="Learn More"
-      actionUrl="https://blog.angular.io/version-6-0-0-of-angular-now-available-cc56b0efa7a4"
       notificationId="angular-v6-announcement"
       expirationDate="2018-07-01"
+      [dismissOnContentClick]="true"
       (dismissed)="notificationDismissed()">
-      Version 6 of Angular Now Available!
+      <a href="https://blog.angular.io/version-6-0-0-of-angular-now-available-cc56b0efa7a4">
+        <mat-icon class="icon" svgIcon="insert_comment" aria-label="Announcement"></mat-icon>
+        <span class="message">Version 6 of Angular Now Available!</span>
+        <span class="action-button">Learn More</span>
+      </a>
     </aio-notification>
   </mat-toolbar-row>
   <mat-toolbar-row>

aio/src/app/layout/notification/notification.component.html

@@ -1,8 +1,6 @@
-<a href="{{actionUrl}}" class="content" (click)="dismiss()">
-  <mat-icon class="icon" [svgIcon]="icon" [attr.aria-label]="iconLabel"></mat-icon>
-  <span class="message"><ng-content></ng-content></span>
-  <span class="action-button">{{buttonText}}</span>
-</a>
+<span class="content" (click)="contentClick()">
+  <ng-content></ng-content>
+</span>
 
 <button mat-icon-button class="close-button" aria-label="Close" (click)="dismiss()">
   <mat-icon svgIcon="close" aria-label="Dismiss notification"></mat-icon>

aio/src/app/layout/notification/notification.component.spec.ts

@@ -30,37 +30,49 @@ describe('NotificationComponent', () => {
     fixture.detectChanges();
   }
 
-  it('should display the message', () => {
+  describe('content projection', () => {
+    it('should display the message text', () => {
       configTestingModule();
       createComponent();
-    expect(fixture.nativeElement.innerHTML).toContain('Help Angular by taking a <strong>1 minute survey</strong>!');
+      expect(fixture.nativeElement.innerHTML).toContain('Version 6 of Angular Now Available!');
     });
 
-  it('should display an icon', () => {
-    configTestingModule();
-    createComponent();
-    const iconElement = fixture.debugElement.query(By.css('.icon'));
-    expect(iconElement.properties['svgIcon']).toEqual('insert_comment');
-    expect(iconElement.attributes['aria-label']).toEqual('Survey');
-  });
-
-  it('should display a button', () => {
+    it('should render HTML elements', () => {
       configTestingModule();
       createComponent();
       const button = fixture.debugElement.query(By.css('.action-button'));
-    expect(button.nativeElement.textContent).toEqual('Go to survey');
+      expect(button.nativeElement.textContent).toEqual('Learn More');
     });
 
-  it('should call dismiss when the message link is clicked', () => {
+    it('should process Angular directives', () => {
+      configTestingModule();
+      createComponent();
+      const badSpans = fixture.debugElement.queryAll(By.css('.bad'));
+      expect(badSpans.length).toEqual(0);
+    });
+  });
+
+  it('should call dismiss() when the message link is clicked, if dismissOnContentClick is true', () => {
     configTestingModule();
     createComponent();
     spyOn(component, 'dismiss');
-    fixture.debugElement.query(By.css('a')).triggerEventHandler('click', null);
-    fixture.detectChanges();
+    component.dismissOnContentClick = true;
+    const message: HTMLSpanElement = fixture.debugElement.query(By.css('.messageholder')).nativeElement;
+    message.click();
     expect(component.dismiss).toHaveBeenCalled();
   });
 
-  it('should call dismiss when the close button is clicked', () => {
+  it('should not call dismiss() when the message link is clicked, if dismissOnContentClick is false', () => {
+    configTestingModule();
+    createComponent();
+    spyOn(component, 'dismiss');
+    component.dismissOnContentClick = false;
+    const message: HTMLSpanElement = fixture.debugElement.query(By.css('.messageholder')).nativeElement;
+    message.click();
+    expect(component.dismiss).not.toHaveBeenCalled();
+  });
+
+  it('should call dismiss() when the close button is clicked', () => {
     configTestingModule();
     createComponent();
     spyOn(component, 'dismiss');
@@ -104,13 +116,15 @@ describe('NotificationComponent', () => {
 @Component({
   template: `
   <aio-notification
-    icon="insert_comment"
-    iconLabel="Survey"
-    buttonText="Go to survey"
-    actionUrl="https://bit.ly/angular-survey-2018"
     notificationId="survey-january-2018"
     expirationDate="2018-01-22">
-    Help Angular by taking a <strong>1 minute survey</strong>!
+    <span class="messageholder">
+    <a href="https://blog.angular.io/version-6-0-0-of-angular-now-available-cc56b0efa7a4">
+      <span *ngIf="false" class="bad">This should not appear</span>
+      <span class="message">Version 6 of Angular Now Available!</span>
+      <span class="action-button">Learn More</span>
+    </a>
+    </span>
   </aio-notification>`
 })
 class TestComponent {

aio/src/app/layout/notification/notification.component.ts

@@ -22,10 +22,7 @@ const LOCAL_STORAGE_NAMESPACE = 'aio-notification/';
 export class NotificationComponent implements OnInit {
   private get localStorage() { return this.window.localStorage; }
 
-  @Input() icon: string;
-  @Input() iconLabel: string;
-  @Input() buttonText: string;
-  @Input() actionUrl: string;
+  @Input() dismissOnContentClick: boolean;
   @Input() notificationId: string;
   @Input() expirationDate: string;
   @Output() dismissed = new EventEmitter();
@@ -44,6 +41,12 @@ export class NotificationComponent implements OnInit {
     this.showNotification = previouslyHidden || expired ? 'hide' : 'show';
   }
 
+  contentClick() {
+    if (this.dismissOnContentClick) {
+      this.dismiss();
+    }
+  }
+
   dismiss() {
     this.localStorage.setItem(LOCAL_STORAGE_NAMESPACE + this.notificationId, 'hide');
     this.showNotification = 'hide';

aio/src/styles/2-modules/_notification.scss

@@ -31,11 +31,14 @@ aio-notification {
   }
 
   .content {
-    display: flex;
     max-width: calc(100% - #{$notificationHeight});
     text-transform: none;
     padding: 0;
 
+    > * {
+      display: flex;
+    }
+
     .icon {
       margin-right: 10px;
       @media (max-width: 464px) {
@@ -46,10 +49,10 @@ aio-notification {
     .message {
       overflow: hidden;
       text-overflow: ellipsis;
+      margin-right: 10px;
     }
 
     .action-button {
-      margin-left: 10px;
       background: $brightred;
       border-radius: 15px;
       text-transform: uppercase;