NgUtils

A package to store commonly used angular application contents

Installation

Angular Version	Command
Version 8	npm i @thalesrc/ng-utils@v8-lts
Version 9	npm i @thalesrc/ng-utils@v9-lts

Advanced Route

Advanced route implementations

AdvancedRouteService

Contains observables of developer friendly route data

• routeChange$: Emits activated route on route change
• deepestRoute$: Emits deepest route on route change
• activeRoutes$: Emits all active routes (from root to deepest child) on route change
• params$: Emits route parameters on route change
• segments$: Emits route segments
• data$: Emits route data

Usage:

Requires injection at root component

// app.component.ts
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {
  constructor(
    advancedRoute: AdvancedRouteService
  ) {}
}

Then, anywhere else

@Component({
  selector: 'app-foo',
  templateUrl: './foo.component.html',
  styleUrls: ['./foo.component.scss']
})
export class FooComponent {
  constructor(
    private advancedRoute: AdvancedRouteService
  ) {
    this.advancedRoute.segments$.subscribe(segments => {
      ...
    });
  }
}

Form

Additional form components, directives, validators etc.

Form Array

Form Array directives for template driven forms

---

ArrayDirective

• selector: [thaArrayModel]
• exportAs: thaArrayModel
• extends: NgModel

ArrayItemDirective

• selector: [thaArrayItem]
• exportAs: thaArrayItem
• extends: NgModel
• do not forget to use formControl for builtin form controls

ArrayGroupDirective

• selector: [thaArrayGroup]
• exportAs: thaArrayGroup
• extends: NgModelGroup

---

Basic Usage:

<!-- model: ['foo', 'bar']-->

<form #form="ngForm">
  <div thaArrayModel name="foo">
    <input formControl thaArrayItem *ngFor="let item of model">
  </div>
</form>

<pre>{{form.value | json}}</pre>
<!--{ foo: [
  'input 1 text',
  'input 2 text',
]} -->

Set values from thaArrayModel:

<!-- model: ['foo', 'bar']-->

<form>
  <div [thaArrayModel]="model" name="list">
    <input formControl thaArrayItem *ngFor="let item of model">
  </div>
</form>

Set values from thaArrayItem:

<!-- model: ['foo', 'bar']-->

<form>
  <div thaArrayModel name="list">
    <input formControl [thaArrayItem]="item" *ngFor="let item of model">
  </div>
</form>

Disable all items:

<!-- model: ['foo', 'bar']-->

<form>
  <div thaArrayModel name="list" disabled>
    <input formControl [thaArrayItem]="item" *ngFor="let item of model">
  </div>
</form>

Use formControl to get form control classes from angular

<!-- model: ['foo', 'bar']-->

<form>
  <div formControl thaArrayModel name="list"> <!-- class="ng-valid ng-pristine ng-untouched" -->
    <input formControl [thaArrayItem]="item" *ngFor="let item of model">
  </div>
</form>

Template variables can be used

<!-- model: ['foo', 'bar']-->

<form>
  <div formControl thaArrayModel name="list" #list="thaArrayModel">
    <ng-template ngFor let-item [ngForOf]="model">
      <input formControl [thaArrayItem]="item" #itemModel="thaArrayItem" required>
      <pre>{{itemModel.valid}}</pre>
    </ng-template>
  </div>
  <pre>{{ list.errors | json }}</pre>
</form>

Create groups like ngModelGroup in an array section

<form>
  <div thaArrayModel name="list">
    <div thaArrayGroup>
      <input name="firstname" ngModel required>
      <input name="lastname" ngModel required>
    </div>
    <div thaArrayGroup>
      <input name="firstname" ngModel required>
      <input name="lastname" ngModel required>
    </div>
  </div>
</form>

Form Disabled

Shorthand to disable/enable all controls in a form.

Usage:

<!-- basic usage -->
<form [disabled]="foo">
  <input ngModel name="username" />
  <input ngModel name="email" />
</form>

<!-- shorthand for disabled: true -->
<form disabled>
  <input ngModel name="username" />
  <input ngModel name="email" />
</form>

<!-- shorthand for disabled: false -->
<form disabled="false">
  <input ngModel name="username" />
  <input ngModel name="email" />
</form>

Image Input

Makes a form component from an img element

Usage:

<form>
  <img thaImageInput [src]="(user$ | async)?.avatar || 'assets/img/avatar.png'" ngModel name="avatar">
</form>

Trigger openning selection by another element

<form>
  <img thaImageInput [changeButton]="imgBtn" [src]="(user$ | async)?.avatar || 'assets/img/avatar.png'" ngModel name="avatar">
  <button type="button" #imgBtn>Change Image</button>
</form>

Overlay

Create your own custom modals, dialogs etc.

Dependencies:

• @angular/cdk

Required Root Module Imports:

• OverlayModule from @thalesrc/ng-utils

OverlayComponent

tha-overlay component comes with no styling except cdk prebuilt styles. It contains only the open/close functionality based on CdkOverlay so feel free to use it with your other CdkOverlay based components.

• exportAs: 'thaOverlay'
• open(): Open the modal
  • [Returns] A promise which emits the value set on close
• close(event: any): Closes the modal by emitting a value
  • [Arg] event: the value to emit (default false)
• (opened): [EventEmitter] Emits when it is opened
• (closed): [EventEmitter] Emits the values set when it is closed (Emits false when no value is set or if it's closed by backdrop click)

Usage:

// style.scss
@import '~@angular/cdk/overlay-prebuilt.css';

@NgModule({
  declarations: [
    ...
  ],
  imports: [
    ...
    OverlayModule
  ],
  providers: [],
})
export class FooModule { }

<!-- component.html -->
<button (click)="modal.open()">Open Modal</button>

<tha-overlay #modal>
  <div>My custom content</div>
  <button (click)="modal.close()">Cancel</button>
  <button (click)="modal.close({foo: true})">Submit</button>
</tha-overlay>

Phantom Platform

An abstract platform with its components and providers

PhantomPlatformLocation

A platform location provider class to use the Router without manipulation or reading the url

• extends: PlatformLocation

Usage:

import { PlatformLocation } from '@angular/common';
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { Route, RouterModule } from '@angular/router';
import { PhantomPlatformLocation } from '@thalesrc/ng-utils/phantom-platform';

@NgModule({
  declarations: [
    ...
  ],
  imports: [
    BrowserModule,
    RouterModule.forRoot(ROUTES),
    ...
  ],
  providers: [
    ...
    { provide: PlatformLocation, useClass: PhantomPlatformLocation },
  ],
  bootstrap: [
    ...
  ]
})
export class AppModule { }

Resize

Observe element's size changes, animate their size, etc..

Dependencies:

• @angular/animations
• @angular/platform-browser
• @thalesrc/resize-manager

Required Root Module Imports:

• BrowserAnimationsModule from @angular/platform-browser/animations

ResizeService

Observe an element's size changes, listen window.resize

Usage:

@Component({
  selector: 'app-foo',
  templateUrl: './foo.component.html',
  styleUrls: ['./foo.component.scss']
})
export class FooComponent implements OnInit {
  constructor(
    private resizeService: ResizeService,
    private el: ElementRef
  ) {}

  ngOnInit() {
    this.resizeService.windowResize$.subscribe(({width, height}) => {
      console.log(width, height);
    });

    this.resizeService.observe(this.el.nativeElement).subscribe(({width, height}) => {
      console.log(width, height);
    });

    this.resizeService.observe(document.querySelector('bar')).subscribe(({width, height}) => {
      console.log(width, height);
    });
  }
}

ResizeDirective

Emits size change events of an element

Usage:

<!-- Listen both width and height change ($event: {width: number, height: number}) -->
<img [src]="src$ | async" thaResize (onResize)="postSizeChange($event)">

<!-- Listen only width change ($event: number) -->
<img [src]="src$ | async" thaResize="width" (onResize)="postWidthChange($event)">

<!-- Listen only height change ($event: number) -->
<img [src]="src$ | async" thaResize="height" (onResize)="postHeightChange($event)">

AnimateResizeDirective

Animate resizing of an element

Usage:

<!-- Animate both width and height change -->
<img [src]="src$ | async" thaAnimateResize>

<!-- Animate only width change -->
<img [src]="src$ | async" thaAnimateResize="width">

<!-- Animate only height change -->
<img [src]="src$ | async" thaAnimateResize="height">

<!-- Set animation duration  -->
<img [src]="src$ | async" thaAnimateResize duration="1000">

<!-- Do smth when animation completed  -->
<img [src]="src$ | async" thaAnimateResize (animationComplete)="doSomething()">

Substitute

Create portals in components and manage it from outside

SubstituteComponent

Create a reference point inside a component to make another component fill and manage it

Usage:

<header>
  <img src="logo.png">
  <tha-substitute thaSubstituteScope="header"></tha-substitute>
</header>

SubstituteDirective

Fill a portal in another component with html and manage it from inside your component

Usage:

<h1>My Panel</h1>
<div class="links" *thaSubstitute="'header'">
  <a *ngFor="let link of links" [routerLink]="link.url"> {{link.text}}</a>
</div>

Utils

InputStream

Convert an @Input() into a stream of data. The prop turns into an observable and emits on every change.

Usage:

@Component({
  selector: 'app-foo',
  templateUrl: './foo.component.html',
  styleUrls: ['./foo.component.scss']
})
export class FooComponent implements OnInit {
  @Input()
  @InputStream()
  public bar: Observable<number>;

  ngOnInit() {
    this.bar.subscribe(num => {
      console.log(num);
    });
  }
}

ListenerStream

Convert an @HostListener() into a stream of data. The prop turns into an observable and emits on every event.

Usage:

@Component({
  selector: 'app-foo',
  templateUrl: './foo.component.html',
  styleUrls: ['./foo.component.scss']
})
export class FooComponent implements OnInit {
  @HostListener('click', ['$event'])
  @ListenerStream()
  public bar: Observable<MouseEvent>;

  ngOnInit() {
    this.bar.subscribe(event => {
      console.log(event);
    });
  }
}

Unsubscriber

Provides some properties into your components to make managing rxjs observables much secure on destroy.

• subs (setter): set your subscription into this prop to make it unsubscribe when the component destroyed
• onDestroy$: emits and completes when the component destroyed

Note: If you have to use ngOnDestroy method of a component on Unsubscriber extended, use super.ngOnDestroy(); in ngOnDestroy method to keep the functionality of Unsubscriber

Usage:

@Component({
  selector: 'app-foo',
  templateUrl: './foo.component.html',
  styleUrls: ['./foo.component.scss']
})
export class FooComponent extends Unsubscriber {
  public data$ = this.service.data$.pipe(takeUntil(this.onDestroy$));
  public foo$ = this.service.foo$;

  constructor(private service: FooService) {
    super();

    this.subs = this.foo$.subscribe(foo => {
      ...
    });
  }
}