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Pembangunan UI KIT dalam Angular 18

DDD
Lepaskan: 2024-09-13 22:16:38
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1048 orang telah melayarinya

Разработка UI KIT на Angular 18

Mari kita buat beberapa komponen aplikasi kami.

Dalam kes ini, kami memerlukan UI berikut:

  • akordion - akordion;
  • autolengkap — input dengan autolengkap;
  • butang - butang;
  • kad - kad;
  • kotak semak - kotak semak;
  • bekas - memusatkan kandungan;
  • pemilih tarikh - pemilih tarikh;
  • dialog - tetingkap modal;
  • tajuk - teks promosi;
  • ikon — set ikon svg;
  • input - input;
  • label - label;
  • susun atur - susun atur;
  • nav - menu;
  • bahagian — tugas latar belakang untuk bahagian dalam kandungan;
  • tajuk - tajuk.

Elemen kompleks akan menggunakan sudut/cdk (dialog, akordion) untuk memudahkan proses.

Jadi mari tambah pakej:

yarn add -D @angular/cdk
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Dan sedikit sihir untuk scss:

{
  "inlineStyleLanguage": "scss",
  "stylePreprocessorOptions": {
    "includePaths": ["node_modules", "./"]
  }
}
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Mencipta utiliti

Tambah direktori utils baharu pada ui:

mkdir src/app/ui/utils
mkdir src/app/ui/utils/lib
echo >src/app/ui/utils/index.ts
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Dalam tsconfig.json kami akan menulis alias:

{
  "paths": {
    "@baf/ui/utils": ["src/app/ui/utils/index.ts"]
  }
}
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Mari kita tentukan beberapa jenis dalam jenis.ts:

export type ButtonMode = 'primary' | 'secondary' | 'tertiary' | undefined;

export type Size = 'small' | 'medium' | 'large' | undefined;
export type Align = 'left' | 'center' | 'right' | undefined;
export type ExtraSize = 'xsmall' | 'small' | 'medium' | 'large' | 'xlarge' | undefined;
export type Width = 'max' | 'initial' | undefined;
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Semuanya adalah pilihan, jadi ia mengandungi yang tidak ditentukan.

Beberapa sifat biasa komponen:

  • jajar - tengah kiri, kanan;
  • dilumpuhkan - keadaan dilumpuhkan (berkaitan untuk borang);
  • saiz, saiz tambahan - saiz teks kecil, sederhana dan besar
  • mod - jenis butang;
  • lebar - lebar elemen.

AlignDirective

Contoh pelaksanaan penjajaran:

import { Directive, inject, input } from '@angular/core';

import { ExtraClassService, toClass } from '@baf/core';

import type { Align } from './types';

@Directive({
  selector: '[bafAlign]',
  standalone: true,
  providers: [ExtraClassService],
})
export class AlignDirective {
  private readonly extraClassService = inject(ExtraClassService);

  readonly align = input<Align, Align>(undefined, {
    alias: 'bafAlign',
    transform: (value) => {
      this.extraClassService.update('align', toClass(value, 'align'));

      return value;
    },
  });
}
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ExtraClassService - perkhidmatan yang menambah kelas yang sepadan.

Sebagai alternatif, anda boleh menggunakan @HostBinding('class.align-center') atau tetapkan peraturan melalui hos.

Memandangkan sudut tidak membenarkan anda memasukkan gaya dalam arahan, mari tambahkan campuran yang perlu diimport untuk setiap komponen.

Buat fail align.scss dalam src/stylesheets:

@mixin make-align() {
  &.align-left {
    text-align: left;
  }

  &.align-center {
    text-align: center;
  }

  &.align-right {
    text-align: right;
  }
}
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Contoh penggunaan:

@use 'src/stylesheets/align' as align;
:host {
  @include align.make-align();
}
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Arahan selebihnya adalah serupa.

bekas

Tambahkan bekas dan masukkan alias.

mkdir src/app/ui/container
mkdir src/app/ui/container/lib
echo >src/app/ui/container/index.ts
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Jana komponen:

yarn ng g c container
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Alihkannya ke src/app/ui/container/lib dan edit ContainerComponent:

import { ChangeDetectionStrategy, Component } from '@angular/core';
import { RouterOutlet } from '@angular/router';

import { AlignDirective } from '@baf/ui/utils';

import { FluidDirective } from './fluid.directive';
import { MobileDirective } from './mobile.directive';

@Component({
  selector: 'baf-container',
  standalone: true,
  imports: [RouterOutlet],
  template: '<ng-content/>',
  styleUrl: './container.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-container',
  },
  hostDirectives: [
    {
      directive: FluidDirective,
      inputs: ['bafFluid'],
    },
    {
      directive: MobileDirective,
      inputs: ['bafMobile'],
    },
    {
      directive: AlignDirective,
      inputs: ['bafAlign'],
    },
  ],
})
export class ContainerComponent {}
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Tambah gaya:

@use 'src/stylesheets/align' as align;
@use 'src/stylesheets/device' as device;

:host {
  display: flex;
  flex-direction: column;
  margin-left: auto;
  margin-right: auto;
  width: 100%;

  &.fluid {
    max-width: 100%;
  }

  &:not(.mobile-no-gutter) {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  @include align.make-align();

  @include device.media-tablet-portrait() {
    &:not(.fluid) {
      max-width: 788px;
    }
  }

  @include device.media-tablet-landscape() {
    &:not(.fluid) {
      max-width: 928px;
    }
  }

  @include device.media-web-portrait() {
    &:not(.fluid) {
      max-width: 808px;
    }
  }

  @include device.media-web-landscape() {
    &:not(.fluid) {
      max-width: 1200px;
    }
  }
}
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Bancuhan lebar diambil daripada bahan:

@mixin media-handset() {
  @media (max-width: 599.98px) and (orientation: portrait), (max-width: 959.98px) and (orientation: landscape) {
    @content;
  }
}
@mixin media-handset-up() {
  @media (min-width: 0) and (orientation: portrait), (min-width: 0) and (orientation: landscape) {
    @content;
  }
}

@mixin media-handset-portrait() {
  @media (max-width: 599.98px) and (orientation: portrait) {
    @content;
  }
}

@mixin media-handset-landscape() {
  @media (max-width: 959.98px) and (orientation: landscape) {
    @content;
  }
}

@mixin media-tablet() {
  @media (min-width: 600px) and (max-width: 839.98px) and (orientation: portrait),
    (min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape) {
    @content;
  }
}

@mixin media-tablet-up() {
  @media (min-width: 600px) and (orientation: portrait), (min-width: 960px) and (orientation: landscape) {
    @content;
  }
}

@mixin media-tablet-landscape() {
  @media (min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape) {
    @content;
  }
}

@mixin media-tablet-portrait() {
  @media (min-width: 600px) and (max-width: 839.98px) and (orientation: portrait) {
    @content;
  }
}

@mixin media-web() {
  @media (min-width: 840px) and (orientation: portrait), (min-width: 1280px) and (orientation: landscape) {
    @content;
  }
}

@mixin media-web-up() {
  @media (min-width: 840px) and (orientation: portrait), (min-width: 1280px) and (orientation: landscape) {
    @content;
  }
}

@mixin media-web-portrait() {
  @media (min-width: 840px) and (orientation: portrait) {
    @content;
  }
}

@mixin media-web-landscape() {
  @media (min-width: 1280px) and (orientation: landscape) {
    @content;
  }
}
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Kami juga akan mencipta dua arahan FluidDirective dan MobileDirective:

import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { Directive, inject, input } from '@angular/core';

import type { CoerceBoolean } from '@baf/core';
import { ExtraClassService } from '@baf/core';

@Directive({
  selector: 'baf-container[bafFluid]',
  standalone: true,
  providers: [ExtraClassService],
})
export class FluidDirective {
  private readonly extraClassService = inject(ExtraClassService);

  readonly fluid = input<CoerceBoolean, CoerceBoolean>(undefined, {
    alias: 'bafFluid',
    transform: (value) => {
      this.extraClassService.patch('fluid', coerceBooleanProperty(value));

      return value;
    },
  });
}
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import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { Directive, inject, input } from '@angular/core';

import type { CoerceBoolean } from '@baf/core';
import { ExtraClassService } from '@baf/core';

@Directive({
  selector: 'baf-container[bafMobile]',
  standalone: true,
  providers: [ExtraClassService],
})
export class MobileDirective {
  private readonly extraClassService = inject(ExtraClassService);

  readonly mobile = input<CoerceBoolean, CoerceBoolean>(undefined, {
    alias: 'bafMobile',
    transform: (value) => {
      this.extraClassService.patch('mobile-no-gutter', coerceBooleanProperty(value));

      return value;
    },
  });
}
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Tajuk, Label, Tajuk, Bahagian dan Kad

Tambahkan tajuk dan masukkan alias:

mkdir src/app/ui/title
mkdir src/app/ui/title/lib
echo >src/app/ui/title/index.ts
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Jana komponen:

yarn ng g c title
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Alihkannya ke src/app/ui/title/lib dan edit TitleComponent:

import { ChangeDetectionStrategy, Component } from '@angular/core';

import { AlignDirective, SizeDirective } from '@baf/ui/utils';

@Component({
  selector: 'baf-title,[baf-title],[bafTitle]',
  standalone: true,
  template: '<ng-content/>',
  styleUrl: './title.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-title',
  },
  hostDirectives: [
    {
      directive: SizeDirective,
      inputs: ['bafSize'],
    },
    {
      directive: AlignDirective,
      inputs: ['bafAlign'],
    },
  ],
})
export class TitleComponent {}
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Beberapa gaya:

@use 'src/stylesheets/align' as align;
@use 'src/stylesheets/size' as size;
@use 'src/stylesheets/typography' as typography;

:host {
  @include size.make-size() using ($size) {
    @if $size == small {
      @include typography.title-small();
    } @else if $size == medium {
      @include typography.title-medium();
    } @else if $size == large {
      @include typography.title-large();
    }
  }
  @include align.make-align();
}
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Selebihnya kami lakukan dengan cara yang sama.

Butang

Mari beralih kepada mencipta widget yang lebih kompleks.

Tambah butang dan masukkan alias:

mkdir src/app/ui/buttons
mkdir src/app/ui/buttons/lib
echo >src/app/ui/buttons/index.ts
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Memandangkan butang diperlukan dalam beberapa jenis, kami akan menetapkan jenis asas -ButtonBase dan AnchorBase:

import type { FocusOrigin } from '@angular/cdk/a11y';
import { FocusMonitor } from '@angular/cdk/a11y';
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import type { AfterViewInit, OnDestroy, OnInit } from '@angular/core';
import { Directive, ElementRef, inject, NgZone } from '@angular/core';

@Directive()
export class ButtonBase implements AfterViewInit, OnDestroy {
  protected readonly elementRef = inject(ElementRef);

  private isDisabled = false;

  private readonly focusMonitor = inject(FocusMonitor);

  get disabled(): boolean {
    return this.isDisabled;
  }

  set disabled(value: string | boolean | null | undefined) {
    const disabled = coerceBooleanProperty(value);
    if (disabled !== this.isDisabled) {
      this.isDisabled = disabled;
    }
  }

  ngAfterViewInit() {
    this.focusMonitor.monitor(this.elementRef, true);
  }

  ngOnDestroy() {
    this.focusMonitor.stopMonitoring(this.elementRef);
  }

  focus(origin: FocusOrigin = 'program', options?: FocusOptions): void {
    if (origin) {
      this.focusMonitor.focusVia(this.elementRef.nativeElement, origin, options);
    } else {
      this.elementRef.nativeElement.focus(options);
    }
  }
}

@Directive()
export class AnchorBase extends ButtonBase implements OnInit, OnDestroy {
  private readonly ngZone = inject(NgZone);

  protected readonly haltDisabledEvents = (event: Event) => {
    if (this.disabled) {
      event.preventDefault();
      event.stopImmediatePropagation();
    }
  };

  ngOnInit(): void {
    this.ngZone.runOutsideAngular(() => {
      this.elementRef.nativeElement.addEventListener('click', this.haltDisabledEvents);
    });
  }

  override ngOnDestroy(): void {
    super.ngOnDestroy();
    this.elementRef.nativeElement.removeEventListener('click', this.haltDisabledEvents);
  }
}
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Pelaksanaan diambil dari Bahan Sudut 2.

Saya belum melihat Bahan 3 dalam Angular dan saya rasa ia tidak berbaloi. Kerumitan komponen lebih besar sedikit daripada infiniti.

Seperti yang anda boleh lihat daripada contoh, keadaan orang kurang upaya ditakrifkan, serta pemerhati fokus.

Mari kita buat butang mudah. Dalam kes kami, ini adalah pembalut berbanding yang standard.

Templat - .

import { ChangeDetectionStrategy, Component } from '@angular/core';

import { DisabledDirective, ExtraSizeDirective, ModeDirective, WidthDirective } from '@baf/ui/utils';

import { AnchorBase, ButtonBase } from '../base/button-base';

@Component({
  // eslint-disable-next-line @angular-eslint/component-selector
  selector: 'button[baf-button]',
  standalone: true,
  template: '<ng-content />',
  styleUrl: './button.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-button',
  },
  hostDirectives: [
    {
      directive: ModeDirective,
      inputs: ['bafMode'],
    },
    {
      directive: ExtraSizeDirective,
      inputs: ['bafSize'],
    },
    {
      directive: DisabledDirective,
      inputs: ['disabled'],
    },
    {
      directive: WidthDirective,
      inputs: ['bafWidth'],
    },
  ],
})
export class ButtonComponent extends ButtonBase {}

@Component({
  // eslint-disable-next-line @angular-eslint/component-selector
  selector: 'a[baf-button]',
  standalone: true,
  template: '<ng-content />',
  styleUrls: ['./button.component.scss'],
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-button',
  },
  hostDirectives: [
    {
      directive: ModeDirective,
      inputs: ['bafMode'],
    },
    {
      directive: ExtraSizeDirective,
      inputs: ['bafSize'],
    },
    {
      directive: DisabledDirective,
      inputs: ['disabled'],
    },
    {
      directive: WidthDirective,
      inputs: ['bafWidth'],
    },
  ],
})
export class AnchorComponent extends AnchorBase {}
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В компоненте определены общие директивы, в которые и вынесена вся логика.

Немного SCSS:

@use 'src/stylesheets/button' as button;
@use 'src/stylesheets/width' as width;

:host {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.5rem;

  border: none;
  box-shadow: none;
  border-radius: 3px;
  cursor: pointer;
  text-decoration: none;

  &.mode-primary {
    @include button.mode(--md-sys-color-primary-container, --md-sys-color-on-primary, --md-sys-color-primary);
  }

  &.mode-secondary {
    @include button.mode(--md-sys-color-secondary-container, --md-sys-color-on-secondary, --md-sys-color-secondary);
  }

  &.mode-tertiary {
    @include button.mode(--md-sys-color-tertiary-container, --md-sys-color-on-tertiary, --md-sys-color-tertiary);
  }

  @include button.disabled();
  @include button.sizes();
  @include width.make-width();
}
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Теперь создадим icon-button.

Макет:

<span class="icon-content">
  <ng-content />
</span>
<span class="state-layer"></span>
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import { ChangeDetectionStrategy, Component } from '@angular/core';

import { DisabledDirective, ExtraSizeDirective, ModeDirective } from '@baf/ui/utils';

import { AnchorBase, ButtonBase } from '../base/button-base';

@Component({
  // eslint-disable-next-line @angular-eslint/component-selector
  selector: 'button[baf-icon-button]',
  standalone: true,
  templateUrl: './icon-button.component.html',
  styleUrl: './icon-button.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-icon-button',
  },
  hostDirectives: [
    {
      directive: ModeDirective,
      inputs: ['bafMode'],
    },
    {
      directive: ExtraSizeDirective,
      inputs: ['bafSize'],
    },
    {
      directive: DisabledDirective,
      inputs: ['disabled'],
    },
  ],
})
export class IconButtonComponent extends ButtonBase {}

@Component({
  // eslint-disable-next-line @angular-eslint/component-selector
  selector: 'a[baf-icon-button]',
  standalone: true,
  templateUrl: './icon-button.component.html',
  styleUrl: './icon-button.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-icon-button',
  },
  hostDirectives: [
    {
      directive: ModeDirective,
      inputs: ['bafMode'],
    },
    {
      directive: ExtraSizeDirective,
      inputs: ['bafSize'],
    },
    {
      directive: DisabledDirective,
      inputs: ['disabled'],
    },
  ],
})
export class IconAnchorComponent extends AnchorBase {}
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Стилизуем кнопки:

:host {
  display: inline-flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;

  height: 48px;
  width: 48px;
  padding: 4px;
  border: none;
  z-index: 0;
  gap: 8px;
  white-space: nowrap;
  user-select: none;
  background-color: transparent;
  text-decoration: none;

  cursor: pointer;

  border-radius: var(--md-sys-shape-corner-full);

  position: relative;
}

.state-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  display: block;
  z-index: 1;
  opacity: 0;
  border-radius: inherit;
}

.icon-content {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md-sys-color-on-surface-variant);
  fill: var(--md-sys-color-on-surface-variant);
  line-height: 1;

  :host:hover & {
    color: var(--md-sys-color-on-surface);
    fill: var(--md-sys-color-on-surface);
  }
}
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Icons

Добавим компонент для иконок.

mkdir src/app/ui/icons
mkdir src/app/ui/icons/lib
echo >src/app/ui/icons/index.ts
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Запускаем команду:

yarn ng g c icon
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Переносим его в src/app/ui/title/lib и отредактируем IconComponent:

import { ChangeDetectionStrategy, Component } from '@angular/core';

@Component({
  // eslint-disable-next-line @angular-eslint/component-selector
  selector: 'svg[baf-icon]',
  standalone: true,
  imports: [],
  templateUrl: './icon.component.html',
  styleUrl: './icon.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
})
export class IconComponent {}
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Стили:

src/app/ui/icons/lib/icon/icon.component.scss
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Пример использования на иконке домой:

<svg baf-icon xmlns="http://www.w3.org/2000/svg" height="24px" viewBox="0 -960 960 960" width="24px">
  <path d="M240-200h120v-240h240v240h120v-360L480-740 240-560v360Zm-80 80v-480l320-240 320 240v480H520v-240h-80v240H160Zm320-350Z" />
</svg>
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import { ChangeDetectionStrategy, Component } from '@angular/core';

import { IconComponent } from '../icon/icon.component';

@Component({
  selector: 'baf-icon-home',
  standalone: true,
  imports: [IconComponent],
  templateUrl: './home.component.html',
  styleUrl: './home.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
})
export class HomeComponent {}
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Так же созданы все остальные иконки:

  • arrow-down - стрелка вниз;
  • arrow-up - стрелка вверх;
  • chevron-left - стрелка влево;
  • chevron-right - стрелка вправо;
  • home - дом;
  • logo - лого;
  • star - звезда;
  • sync-alt - рефреш.

Accordion

Реализуем аккордеон:

mkdir src/app/ui/accordion
mkdir src/app/ui/accordion/lib
echo >src/app/ui/accordion/index.ts
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Запускаем команду:

yarn ng g c accordion
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Добавим интерфейс:

export interface AccordionItem {
  readonly title: string;
  readonly description: string;
}
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В компоненте будем выводить список элементов:

import { CdkAccordionModule } from '@angular/cdk/accordion';
import { ChangeDetectionStrategy, Component, input } from '@angular/core';

import { ArrowDownComponent, ArrowUpComponent } from '@baf/ui/icons';

export interface AccordionItem {
  readonly title: string;
  readonly description: string;
}

@Component({
  selector: 'baf-accordion',
  standalone: true,
  imports: [CdkAccordionModule, ArrowDownComponent, ArrowUpComponent],
  templateUrl: './accordion.component.html',
  styleUrl: './accordion.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
})
export class AccordionComponent {
  readonly items = input.required<AccordionItem[]>();
}
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Шаблон:

<cdk-accordion>
  @for (item of items(); track item.title; let index = $index) {
    <cdk-accordion-item
      class="accordion"
      #accordionItem="cdkAccordionItem"
      role="button"
      tabindex="0"
      [attr.id]="'accordion-header-' + index"
      [attr.aria-expanded]="accordionItem.expanded"
      [attr.aria-controls]="'accordion-body-' + index"
    >
      <div class="accordion-header" (click)="accordionItem.toggle()">
        @if (accordionItem.expanded) {
          <baf-arrow-down />
        } @else {
          <baf-arrow-up />
        }
        <span> {{ item.title }} </span>
      </div>
      <div
        class="accordion-body"
        role="region"
        [style.display]="accordionItem.expanded ? '' : 'none'"
        [attr.id]="'accordion-body-' + index"
        [attr.aria-labelledby]="'accordion-header-' + index"
      >
        {{ item.description }}
      </div>
    </cdk-accordion-item>
  }
</cdk-accordion>
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Стили:

.accordion {
  display: block;

  &:not(:last-child) {
    border-bottom: 1px solid var(--md-sys-color-surface-variant);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
  }
}

.accordion-header {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  line-height: 1;
  user-select: none;
}

.accordion-body {
  padding: 1rem 1rem 0 2rem;
}
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Checkbox

Создадим чекбокс.

Отмечу, что оформление я взял из проекта мериалайз

mkdir src/app/ui/checkbox
mkdir src/app/ui/checkbox/lib
echo >src/app/ui/checkbox/index.ts
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Запускаем команду:

yarn ng g c checkbox
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Разметка:

<label>
  <input type="checkbox" [name]="options().name ?? ''" [formControl]="control()" />
  <span><ng-content /></span>
</label>
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Украду немного стилей из Material CSS:

[type='checkbox']:not(:checked),
[type='checkbox']:checked {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

[type='checkbox']:checked {
  + span:before {
    top: -4px;
    left: -5px;
    width: 12px;
    height: 22px;
    border-top: 2px solid transparent;
    border-left: 2px solid transparent;
    border-right: 2px solid var(--md-sys-color-primary);
    border-bottom: 2px solid var(--md-sys-color-primary);
    transform: rotate(40deg);
    backface-visibility: hidden;
    transform-origin: 100% 100%;
  }

  &:disabled + span:before {
    border-right: 2px solid var(--md-sys-color-shadow);
    border-bottom: 2px solid var(--md-sys-color-shadow);
  }
}

[type='checkbox'] {
  + span {
    position: relative;
    padding-left: 35px;
    cursor: pointer;
    display: inline-block;
    height: 25px;
    line-height: 25px;
    font-size: 1rem;
    user-select: none;
  }

  &:not(:checked):disabled + span:before {
    border: none;
    background-color: var(--md-sys-color-shadow);
  }

  // General
  + span:after {
    border-radius: 2px;
  }

  + span:before,
  + span:after {
    content: '';
    left: 0;
    position: absolute;
    /* .1s delay is for check animation */
    transition:
      border 0.25s,
      background-color 0.25s,
      width 0.2s 0.1s,
      height 0.2s 0.1s,
      top 0.2s 0.1s,
      left 0.2s 0.1s;
    z-index: 1;
  }

  // Unchecked style
  &:not(:checked) + span:before {
    width: 0;
    height: 0;
    border: 3px solid transparent;
    left: 6px;
    top: 10px;
    transform: rotateZ(37deg);
    transform-origin: 100% 100%;
  }

  &:not(:checked) + span:after {
    height: 20px;
    width: 20px;
    background-color: transparent;
    border: 2px solid var(--md-sys-color-outline);
    top: 0;
    z-index: 0;
  }

  // Checked style
  &:checked {
    + span:before {
      top: 0;
      left: 1px;
      width: 8px;
      height: 13px;
      border-top: 2px solid transparent;
      border-left: 2px solid transparent;
      border-right: 2px solid var(--md-sys-color-on-primary);
      border-bottom: 2px solid var(--md-sys-color-on-primary);
      transform: rotateZ(37deg);
      transform-origin: 100% 100%;
    }

    + span:after {
      top: 0;
      width: 20px;
      height: 20px;
      border: 2px solid var(--md-sys-color-primary);
      background-color: var(--md-sys-color-primary);
      z-index: 0;
    }
  }

  // Disabled style
  &:disabled:not(:checked) + span:before {
    background-color: transparent;
    border: 2px solid transparent;
  }

  &:disabled:not(:checked) + span:after {
    border-color: transparent;
    background-color: var(--md-sys-color-outline);
  }

  &:disabled:checked + span:before {
    background-color: transparent;
  }

  &:disabled:checked + span:after {
    background-color: var(--md-sys-color-outline);
    border-color: var(--md-sys-color-outline);
  }
}
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Сам компонент:

import { ChangeDetectionStrategy, Component, input } from '@angular/core';
import type { FormControl } from '@angular/forms';
import { ReactiveFormsModule } from '@angular/forms';

export interface CheckboxOptions {
  readonly [key: string]: unknown;

  readonly name?: string;
}

@Component({
  selector: 'baf-checkbox',
  standalone: true,
  imports: [ReactiveFormsModule],
  templateUrl: './checkbox.component.html',
  styleUrl: './checkbox.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
})
export class CheckboxComponent {
  readonly control = input.required<FormControl<boolean>>();
  readonly options = input<CheckboxOptions>({});
}
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Input

Реализуем инпут:

mkdir src/app/ui/input
mkdir src/app/ui/input/lib
echo >src/app/ui/input/index.ts
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Выполним инструкцию:

yarn ng g c input
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InputComponent будет оберткой над input.

import { ChangeDetectionStrategy, Component, ElementRef, inject } from '@angular/core';
import { NgControl } from '@angular/forms';

@Component({
  // eslint-disable-next-line @angular-eslint/component-selector
  selector: 'input[baf-input]',
  standalone: true,
  imports: [],
  template: '<ng-content/>',
  styleUrl: './input.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-input',
  },
})
export class InputComponent {
  readonly elementRef: ElementRef<HTMLInputElement> = inject(ElementRef);
  readonly ngControl = inject(NgControl);
}
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Добавим SCSS:

:host {
  display: block;
  background-color: transparent;
  height: 100%;
  width: 100%;
  padding: 0;
  border: none;
  outline: none;

  &:hover,
  &:focus,
  &:active {
    outline: none;
  }

  &::placeholder {
    color: var(--md-sys-color-on-surface-variant);
  }

  :host-context(.is-invalid) {
    color: var(--md-sys-color-error);
  }
}
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Перенесем концепты из mat-form-field:

yarn ng g c input-control
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Разметка и стили:

<div class="input-container">
  <ng-content select="[baf-input-prefix]" />
  <div class="input-box">
    <ng-content select="label[baf-label],baf-label" />
    <div class="input">
      <ng-content select="input[baf-input],baf-input" />
    </div>
  </div>
  <ng-content select="[baf-input-suffix]" />
</div>
<ng-content />
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:host {
  display: flex;
  flex-direction: column;
  position: relative;
  width: 100%;

  &.is-disabled {
    cursor: not-allowed;
    pointer-events: none;
    color: rgba(var(--md-sys-color-on-surface-rgba), 0.38);

    .input {
      color: rgba(var(--md-sys-color-on-surface-rgba), 0.38);
    }
  }

  &.is-pressed,
  &.is-value {
    .input {
      opacity: 1;
    }
  }
}

.input-box {
  position: relative;
  margin: 0 16px;
  justify-content: center;
  height: 100%;
  flex-grow: 1;
}

.input-container {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
  border-radius: var(--md-sys-shape-corner-extra-small-top);
  height: 3rem;
}

.input {
  opacity: 0;
  height: 100%;
  width: 100%;
  position: relative;
  z-index: 2;
  transition: opacity 0.1s;
  padding: 12px 0 0 0;
}
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Возможно можно и разбить на несколько дочерних компонентов, но и так получается достаточно сложно.

Используемые вспомогательные директивы для префиксов и прочего.

src/app/ui/input/lib/input-display.directive.ts:

import { Directive, ElementRef, forwardRef, inject, input } from '@angular/core';
import type { ControlValueAccessor } from '@angular/forms';
import { NG_VALUE_ACCESSOR } from '@angular/forms';

import type { ChangeFn, DisplayFn, TouchedFn } from '@baf/core';

@Directive({
  selector: 'input[formControlName][bafInputDisplay],input[formControl][bafInputDisplay]',
  standalone: true,
  providers: [
    {
      provide: NG_VALUE_ACCESSOR,
      useExisting: forwardRef(() => InputDisplayDirective),
      multi: true,
    },
  ],
  host: {
    '(blur)': 'onTouched()',
    '(input)': 'onInput($event)',
  },
})
export class InputDisplayDirective implements ControlValueAccessor {
  private readonly elementRef = inject(ElementRef<HTMLInputElement>);
  readonly display = input.required<DisplayFn>({ alias: 'bafInputDisplay' });

  onChange!: ChangeFn;
  onTouched!: TouchedFn;

  registerOnChange(fn: ChangeFn): void {
    this.onChange = fn;
  }

  registerOnTouched(fn: TouchedFn): void {
    this.onTouched = fn;
  }

  writeValue(value: unknown): void {
    this.elementRef.nativeElement.value = this.display()(value);
  }

  onInput(event: Event): void {
    const { value } = event.target as HTMLInputElement;
    this.elementRef.nativeElement.value = this.display()(value);
    this.onChange(value);
  }
}
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src/app/ui/input/lib/input-mask.directive.ts:

import type { OnInit } from '@angular/core';
import { Directive, ElementRef, forwardRef, inject, InjectionToken, input } from '@angular/core';
import type { ControlValueAccessor } from '@angular/forms';
import { NG_VALUE_ACCESSOR } from '@angular/forms';

import type { ChangeFn, MaskFn, TouchedFn } from '@baf/core';

export const INPUT_MASK_VALUES = new InjectionToken<Record<string, RegExp>>('INPUT_MASK_VALUES');

const DEFAULT_INPUT_MASK_VALUES: Record<string, RegExp> = { 0: /[0-9]/, a: /[a-z]/, A: /[A-Z]/, B: /[a-zA-Z]/ };

export const DEFAULT_MASK_FN: MaskFn = (value) => value;

@Directive({
  selector: 'input[formControlName][bafInputMask],input[formControl][bafInputMask]',
  standalone: true,
  providers: [
    {
      provide: NG_VALUE_ACCESSOR,
      useExisting: forwardRef(() => InputMaskDirective),
      multi: true,
    },
  ],
  host: {
    '(blur)': 'onTouched()',
    '(input)': 'onInput($event)',
  },
})
export class InputMaskDirective implements ControlValueAccessor, OnInit {
  private readonly maskValues = inject(INPUT_MASK_VALUES, { optional: true }) ?? DEFAULT_INPUT_MASK_VALUES;
  private readonly elementRef = inject(ElementRef<HTMLInputElement>);

  private lastValue?: string;

  private readonly maskFormats = `(${Object.keys(this.maskValues)
    .map((key) => {
      const regexStr = this.maskValues[key].toString();

      return regexStr.substring(1, regexStr.length - 1);
    })
    .join('|')})`;

  readonly mask = input.required<string>({ alias: 'bafInputMask' });
  readonly maskFrom = input<MaskFn>(DEFAULT_MASK_FN, { alias: 'bafInputMaskFrom' });
  readonly maskTo = input<MaskFn>(DEFAULT_MASK_FN, { alias: 'bafInputMaskTo' });

  onChange!: ChangeFn;
  onTouched!: TouchedFn;

  registerOnChange(fn: ChangeFn): void {
    this.onChange = fn;
  }

  registerOnTouched(fn: TouchedFn): void {
    this.onTouched = fn;
  }

  writeValue(value: string | undefined | null): void {
    this.elementRef.nativeElement.value = this.getMaskedValue(this.maskTo()(value));
  }

  onInput(event: Event): void {
    const { value } = event.target as HTMLInputElement;
    const masked = this.getMaskedValue(value);
    this.elementRef.nativeElement.value = masked;
    this.onChange(this.maskFrom()(masked));
  }

  ngOnInit(): void {
    if (!this.mask()) {
      console.warn(`Property mask should not be empty for input:`, this.elementRef.nativeElement);
    }
  }

  getMaskedValue(value: string | undefined | null): string | undefined | null {
    if (!this.mask() || !value || value === this.lastValue) {
      return value;
    }

    const masked = this.valueToFormat(value, this.mask(), this.lastValue ? this.lastValue.length > value.length : false, this.lastValue);
    this.lastValue = masked;

    return masked;
  }

  /**
   * @see https://gist.github.com/rami-alloush/3ee792fd0647b73de5f863a2719c78c6
   */
  private valueToFormat(value: string, format: string, goingBack?: boolean, prevValue?: string): string {
    let maskedValue = '';
    const unmaskedValue = value.replace(' ', '').match(new RegExp(this.maskFormats, 'g'))?.join('') ?? '';

    const formats = new RegExp(this.maskFormats);
    const isLastCharFormatter = !formats.test(value[value.length - 1]);
    const isPrevLastCharFormatter = prevValue && !formats.test(prevValue[prevValue.length - 1]);

    let formatOffset = 0;
    for (let index = 0, max = Math.min(unmaskedValue.length, format.length); index < max; ++index) {
      const valueChar = unmaskedValue[index];
      let formatChar = format[formatOffset + index];
      let formatRegex = this.maskValues[formatChar];

      if (formatChar && !formatRegex) {
        maskedValue += formatChar;
        formatChar = format[++formatOffset + index];
        formatRegex = this.maskValues[formatChar];
      }

      if (valueChar && formatRegex) {
        if (formatRegex && formatRegex.test(valueChar)) {
          maskedValue += valueChar;
        } else {
          break;
        }
      }

      const nextFormatChar = format[formatOffset + index + 1];
      const nextFormatRegex = this.maskValues[nextFormatChar];
      const isLastIteration = index === max - 1;

      if (isLastIteration && nextFormatChar && !nextFormatRegex) {
        if (!isLastCharFormatter && goingBack) {
          if (prevValue && !isPrevLastCharFormatter) {
            continue;
          }
          maskedValue = maskedValue.substring(0, formatOffset + index);
        } else {
          maskedValue += nextFormatChar;
        }
      }
    }

    return maskedValue;
  }
}
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src/app/ui/input/lib/input-prefix.directive.ts:

import { Directive } from '@angular/core';

@Directive({
  selector: '[bafInputPrefix]',
  standalone: true,
  host: {
    class: 'input-prefix',
    '[style.margin-left]': '"12px"',
  },
})
export class InputPrefixDirective {}
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src/app/ui/input/lib/input-suffix.directive.ts:

import { Directive } from '@angular/core';

@Directive({
  selector: '[bafInputSuffix]',
  standalone: true,
  host: {
    class: 'baf-input-suffix',
    '[style.margin-right]': '"12px"',
  },
})
export class InputSuffixDirective {}
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Логика работы достаточно проста:

import type { AfterViewInit, OnDestroy } from '@angular/core';
import { ChangeDetectionStrategy, Component, contentChild, DestroyRef, ElementRef, inject, Renderer2 } from '@angular/core';
import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
import type { FormControlStatus } from '@angular/forms';
import { TouchedChangeEvent } from '@angular/forms';
import { filter, startWith, tap } from 'rxjs';

import { LabelComponent } from '@baf/ui/label';

import { InputComponent } from './input.component';

@Component({
  selector: 'baf-input-control',
  templateUrl: './input-control.component.html',
  styleUrls: ['./input-control.component.scss'],
  changeDetection: ChangeDetectionStrategy.OnPush,
  standalone: true,
  host: {
    class: 'baf-input-control',
  },
})
export class InputControlComponent implements AfterViewInit, OnDestroy {
  readonly destroyRef = inject(DestroyRef);
  readonly elementRef: ElementRef<HTMLInputElement> = inject(ElementRef);
  readonly renderer = inject(Renderer2);

  readonly label = contentChild<LabelComponent>(LabelComponent);
  readonly input = contentChild.required<InputComponent>(InputComponent);

  private isDisabled = false;

  ngAfterViewInit(): void {
    const input = this.input();
    if (!input) {
      console.warn('Input[baf-input] not found. Add child <input baf-input /> in <baf-input-control></baf-input-control>');
      return;
    }

    input.elementRef.nativeElement.addEventListener('click', this.onFocusin);
    input.elementRef.nativeElement.addEventListener('focusout', this.onFocusout);
    input.elementRef.nativeElement.addEventListener('input', this.onInput);
    input.elementRef.nativeElement.addEventListener('change', this.onInput);
    this.onInput({ target: input.elementRef.nativeElement });

    input.ngControl.control?.events
      .pipe(
        filter((event) => event instanceof TouchedChangeEvent),
        tap(() => this.check()),
        takeUntilDestroyed(this.destroyRef),
      )
      .subscribe();

    input.ngControl.valueChanges
      ?.pipe(
        tap(() => {
          if (!input.ngControl.value && this.elementRef.nativeElement.classList.contains('is-value')) {
            this.renderer.removeClass(this.elementRef.nativeElement, 'is-value');
          }
          this.onInput({ target: input.elementRef.nativeElement });
        }),
        takeUntilDestroyed(this.destroyRef),
      )
      .subscribe();

    input.ngControl.statusChanges
      ?.pipe(
        startWith(input.ngControl.status),
        tap((status: FormControlStatus) => {
          this.isDisabled = status === 'DISABLED';
          this.disable();
        }),
        takeUntilDestroyed(this.destroyRef),
      )
      .subscribe();
  }

  ngOnDestroy(): void {
    const input = this.input();
    if (!input) {
      return;
    }

    input.elementRef.nativeElement.removeEventListener('click', this.onFocusin);
    input.elementRef.nativeElement.removeEventListener('focusout', this.onFocusout);
    input.elementRef.nativeElement.removeEventListener('input', this.onInput);
    input.elementRef.nativeElement.removeEventListener('change', this.onInput);
  }

  private onFocusin = () => {
    if (!this.isDisabled) {
      this.renderer.addClass(this.elementRef.nativeElement, 'is-pressed');
    }
  };

  private onFocusout = () => {
    if (!this.isDisabled) {
      this.renderer.removeClass(this.elementRef.nativeElement, 'is-pressed');
    }
    this.check();
  };

  private onInput = (event: Event | { target: HTMLInputElement }) => {
    if (!this.isDisabled) {
      const target = event.target as HTMLInputElement;

      if (target.value?.length > 0) {
        this.renderer.addClass(this.elementRef.nativeElement, 'is-value');
      } else {
        this.renderer.removeClass(this.elementRef.nativeElement, 'is-value');
      }

      this.check();
    }
  };

  private disable(): void {
    if (this.isDisabled) {
      this.renderer.addClass(this.elementRef.nativeElement, 'is-disabled');
    } else {
      this.renderer.removeClass(this.elementRef.nativeElement, 'is-disabled');
    }
  }

  private check(): void {
    if (this.input().ngControl.touched) {
      if (this.input().ngControl.errors) {
        this.renderer.addClass(this.elementRef.nativeElement, 'is-invalid');
      } else {
        this.renderer.removeClass(this.elementRef.nativeElement, 'is-invalid');
      }
    }
  }
}
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Так как input является потомком, ищем его после рендера и добавляем обработчики:

input.elementRef.nativeElement.addEventListener('click', this.onFocusin);
input.elementRef.nativeElement.addEventListener('focusout', this.onFocusout);
input.elementRef.nativeElement.addEventListener('input', this.onInput);
input.elementRef.nativeElement.addEventListener('change', this.onInput);
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Листенеры:

  • onFocusin - фосус;
  • onFocusout - блюр;
  • onInput - ввод значения в input.

Также подписываемся на изменение состояния:

   input.ngControl.control?.events
      .pipe(
        filter((event) => event instanceof TouchedChangeEvent),
        tap(() => this.check()),
        takeUntilDestroyed(this.destroyRef),
      )
      .subscribe();

    input.ngControl.valueChanges
      ?.pipe(
        tap(() => {
          if (!input.ngControl.value && this.elementRef.nativeElement.classList.contains('is-value')) {
            this.renderer.removeClass(this.elementRef.nativeElement, 'is-value');
          }
          this.onInput({ target: input.elementRef.nativeElement });
        }),
        takeUntilDestroyed(this.destroyRef),
      )
      .subscribe();

    input.ngControl.statusChanges
      ?.pipe(
        startWith(input.ngControl.status),
        tap((status: FormControlStatus) => {
          this.isDisabled = status === 'DISABLED';
          this.disable();
        }),
        takeUntilDestroyed(this.destroyRef),
      )
      .subscribe();
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Autocomplete

Реализуем autocomplete:

mkdir src/app/ui/autocomplete
mkdir src/app/ui/autocomplete/lib
echo >src/app/ui/autocomplete/index.ts
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Выполним команду:

yarn ng g c autocomplete
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Разметка и стили:

<baf-input-control cdkOverlayOrigin #trigger="cdkOverlayOrigin">
  <label baf-label [attr.for]="options().id">{{ options().label }}</label>
  <input
    #input
    baf-input
    type="text"
    [bafInputDisplay]="options().inputDisplayFn"
    [id]="options().id"
    [formControl]="control()"
    [placeholder]="options().placeholder ?? ''"
    (click)="onOpen()"
    (input)="onInput($event)"
  />
</baf-input-control>

<ng-template
  cdkConnectedOverlay
  [cdkConnectedOverlayOrigin]="trigger"
  [cdkConnectedOverlayOpen]="open()"
  [cdkConnectedOverlayWidth]="width"
  [cdkConnectedOverlayOffsetY]="1"
  (overlayOutsideClick)="onClose()"
>
  <div class="autocomplete-overlay">
    @for (option of data() | async; track option.id; let index = $index) {
      <a class="autocomplete-option" [innerHTML]="options().displayFn(option, index)" (click)="onSelect(option)"></a>
    }
  </div>
</ng-template>
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.autocomplete-overlay {
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
  width: 100%;
  padding: 1rem;
  border-radius: 0.25rem;
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.autocomplete-option {
  text-decoration: none;
  padding: 0.5rem;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;

  &:not(:last-child) {
    border-bottom: 1px solid var(--md-sys-color-surface);
  }

  &:hover {
    color: var(--md-sys-color-primary-container);
  }
}
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Логика компонента:

import { CdkConnectedOverlay, CdkOverlayOrigin } from '@angular/cdk/overlay';
import { AsyncPipe, NgForOf } from '@angular/common';
import type { Signal } from '@angular/core';
import { ChangeDetectionStrategy, Component, ElementRef, input, output, signal, viewChild } from '@angular/core';
import type { FormControl } from '@angular/forms';
import { ReactiveFormsModule } from '@angular/forms';
import type { Observable } from 'rxjs';
import { take, tap } from 'rxjs';

import type { DisplayFn } from '@baf/core';
import { InputComponent, InputControlComponent, InputDisplayDirective } from '@baf/ui/input';
import { LabelComponent } from '@baf/ui/label';

// eslint-disable-next-line @typescript-eslint/no-explicit-any
export type AutocompleteVariant = Record<string, any> & { readonly id: number | string };

export interface AutocompleteOptions {
  readonly label: string;
  readonly placeholder?: string;
  readonly id: string;
  readonly key: string;
  readonly displayFn: DisplayFn;
  readonly inputDisplayFn: DisplayFn;
}

@Component({
  selector: 'baf-autocomplete',
  standalone: true,
  imports: [
    ReactiveFormsModule,
    CdkConnectedOverlay,
    CdkOverlayOrigin,
    InputComponent,
    NgForOf,
    AsyncPipe,
    InputControlComponent,
    InputDisplayDirective,
    LabelComponent,
  ],
  templateUrl: './autocomplete.component.html',
  styleUrl: './autocomplete.component.scss',
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
    class: 'baf-input-control',
  },
})
export class AutocompleteComponent {
  readonly control = input.required<FormControl<string | AutocompleteVariant>>();
  readonly options = input.required<AutocompleteOptions>();
  readonly data = input.required<Observable<AutocompleteVariant[]>>();

  readonly changed = output<string>();
  readonly opened = output();
  readonly closed = output();

  readonly input: Signal<ElementRef<HTMLInputElement>> = viewChild.required('input', { read: ElementRef<HTMLInputElement> });

  readonly open = signal<boolean>(false);

  get width(): string {
    return this.input().nativeElement.clientWidth > 200 ? `${this.input().nativeElement.clientWidth}px` : '200px';
  }

  onOpen(): void {
    if (!this.open()) {
      this.open.set(true);
      this.opened.emit();
    }
  }

  onClose(): void {
    this.closed.emit();
    this.open.set(false);

    this.data()
      .pipe(
        take(1),
        tap((options) => {
          if (
            options.length &&
            this.control().value &&
            (typeof this.control().value === 'string' || JSON.stringify(this.control().value) !== JSON.stringify(options[0]))
          ) {
            this.control().patchValue(options[0], { emitEvent: false });
          }
        }),
      )
      .subscribe();
  }

  onInput(event: Event): void {
    this.changed.emit((event.target as HTMLInputElement).value);
  }

  onSelect(option: AutocompleteVariant): void {
    this.control().patchValue(option, { emitEvent: false });
    this.closed.emit();
    this.open.set(false);
  }
}
Salin selepas log masuk

Суть работы следующая:

  • при клике на поле показать выпадающее окно;
  • при вводе значений, вывести подсказки.

Методы:

  • onOpen - показать окно;
  • onInput - ввод значения;
  • onSelect - выбор подсказки;
  • onClose - событие закрытия.

Показанных компонентов достаточно, чтобы перейти к разработке страниц.

Ссылки

Все исходники находятся на github, в репозитории - github.com/Fafnur/buy-and-fly

Демо можно посмотреть здесь - buy-and-fly.fafn.ru/

Мои группы: telegram, medium, vk, x.com, linkedin, site

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