Create improved book toggling component

src/SIL.XForge.Scripture/ClientApp/src/app/shared/book-multi-select/book-multi-select.component.html

@@ -32,17 +32,12 @@
   }
   <div class="flex-row">
     @for (book of bookOptions; track book) {
-      <mat-chip-listbox
-        hideSingleSelectionIndicator
-        [selectable]="!readonly"
-        class="book-multi-select"
+      <app-toggle-book
+        [book]="book.bookNum"
+        [selected]="book.selected"
+        (selected)="onChipListChange(book)"
         [disabled]="readonly"
-        (change)="onChipListChange(book)"
-      >
-        <mat-chip-option [value]="book" [selected]="book.selected">
-          {{ "canon.book_names." + book.bookId | transloco }}
-        </mat-chip-option>
-      </mat-chip-listbox>
+      ></app-toggle-book>
     }
   </div>
 </ng-container>

src/SIL.XForge.Scripture/ClientApp/src/app/shared/book-multi-select/book-multi-select.component.ts

@@ -3,6 +3,7 @@ import { MatChipsModule } from '@angular/material/chips';
 import { TranslocoModule } from '@ngneat/transloco';
 import { Canon } from '@sillsdev/scripture';
 import { UICommonModule } from 'xforge-common/ui-common.module';
+import { ToggleBookComponent } from '../../translate/draft-generation/toggle-book/toggle-book.component';
 
 export interface BookOption {
   bookNum: number;
@@ -14,7 +15,7 @@ export interface BookOption {
   selector: 'app-book-multi-select',
   templateUrl: './book-multi-select.component.html',
   standalone: true,
-  imports: [UICommonModule, MatChipsModule, TranslocoModule],
+  imports: [UICommonModule, MatChipsModule, TranslocoModule, ToggleBookComponent],
   styleUrls: ['./book-multi-select.component.scss']
 })
 export class BookMultiSelectComponent implements OnChanges {

src/SIL.XForge.Scripture/ClientApp/src/app/translate/draft-generation/toggle-book/toggle-book.component.html

@@ -0,0 +1,19 @@
+<ng-container transloco>
+  <span class="wrapper" [style.--background-image]="backgroundCssGradientStripes">
+    <span
+      class="book"
+      [style.--progress]="progressCssValue"
+      [style.--border-width]="borderWidthCssValue"
+      [class.selected]="selected"
+      [class.disabled]="disabled"
+      (click)="toggleSelected()"
+      (keypress)="onKeyPress($event)"
+      [matTooltip]="progressDescription"
+      matRipple
+      [matRippleDisabled]="disabled"
+      [tabindex]="disabled ? -1 : 0"
+    >
+      {{ bookName(book) }}
+    </span>
+  </span>
+</ng-container>

src/SIL.XForge.Scripture/ClientApp/src/app/translate/draft-generation/toggle-book/toggle-book.component.scss

@@ -0,0 +1,51 @@
+:host {
+  --progress-color: hsl(0, 0%, 80%);
+  --progress-hover-color: hsl(0, 0%, 70%);
+  --progress-bg-color: hsl(0, 0%, 90%);
+  --progress-hover-bg-color: hsl(0, 0%, 80%);
+
+  user-select: none;
+}
+
+.wrapper {
+  display: inline-block;
+  border-radius: 1000px;
+}
+
+.wrapper:has(.selected) {
+  background-image: var(--background-image);
+}
+
+.book {
+  display: block;
+  background-color: var(--progress-bg-color);
+  padding: 0 16px;
+  line-height: 32px;
+  border-radius: 1000px;
+  margin: var(--border-width);
+  position: relative;
+
+  background-image: linear-gradient(
+    90deg,
+    var(--progress-color) var(--progress),
+    var(--progress-bg-color) var(--progress)
+  );
+
+  &.disabled:not(.selected) {
+    opacity: 0.7;
+  }
+
+  &:not(.disabled) {
+    cursor: pointer;
+  }
+
+  &:hover:not(.disabled),
+  &:focus:not(.disabled) {
+    outline: none;
+    background-image: linear-gradient(
+      90deg,
+      var(--progress-hover-color) var(--progress),
+      var(--progress-hover-bg-color) var(--progress)
+    );
+  }
+}

src/SIL.XForge.Scripture/ClientApp/src/app/translate/draft-generation/toggle-book/toggle-book.component.ts

@@ -0,0 +1,70 @@
+import { Component, EventEmitter, Input, Output } from '@angular/core';
+import { MatRippleModule } from '@angular/material/core';
+import { MatTooltipModule } from '@angular/material/tooltip';
+import { TranslocoModule } from '@ngneat/transloco';
+import { I18nService } from '../../../../xforge-common/i18n.service';
+
+@Component({
+  selector: 'app-toggle-book',
+  standalone: true,
+  imports: [TranslocoModule, MatTooltipModule, MatRippleModule],
+  templateUrl: './toggle-book.component.html',
+  styleUrl: './toggle-book.component.scss'
+})
+export class ToggleBookComponent {
+  @Output() selectedChanged = new EventEmitter<number>();
+  @Input() selected = false;
+  @Input() disabled = false;
+  @Input() borderWidth = 2;
+  @Input() book!: number;
+  @Input() progress?: number;
+  @Input() hues: number[] = [230];
+
+  constructor(private readonly i18n: I18nService) {}
+
+  bookName(book: number): string {
+    return this.i18n.localizeBook(book);
+  }
+
+  toggleSelected(): void {
+    if (!this.disabled) {
+      this.selected = !this.selected;
+      this.selectedChanged.emit(this.book);
+    }
+  }
+
+  onKeyPress(event: KeyboardEvent): void {
+    if (event.key === 'Enter' || event.key === ' ') {
+      this.toggleSelected();
+      event.preventDefault();
+    }
+  }
+
+  get backgroundCssGradientStripes(): string {
+    const percentPerStripe = 12.5;
+    const colors = this.hues.map(hue => `hsl(${hue}, 80%, 60%)`);
+    let gradient = [];
+    for (const [index, color] of colors.entries()) {
+      const from = index * percentPerStripe;
+      const to = (index + 1) * percentPerStripe;
+      gradient.push(`${color} ${from}%, ${color} ${to}%`);
+    }
+    return `repeating-linear-gradient(135deg, ${gradient.join(', ')})`;
+  }
+
+  get progressCssValue(): string {
+    return `${(this.progress ?? 0) * 100}%`;
+  }
+
+  get borderWidthCssValue(): string {
+    return `${this.borderWidth}px`;
+  }
+
+  get progressDescription(): string {
+    if (this.progress == null) return '';
+
+    // avoid showing 100% when it's not quite there
+    let percent = this.progress > 0.99 && this.progress < 1 ? 99 : Math.round(this.progress * 100);
+    return this.progress != null ? `${Math.round(percent)}% translated` : '';
+  }
+}

src/SIL.XForge.Scripture/ClientApp/src/app/translate/draft-generation/toggle-book/toggle-book.stories.ts

@@ -0,0 +1,68 @@
+import { CommonModule } from '@angular/common';
+import { TranslocoModule } from '@ngneat/transloco';
+import { Meta, moduleMetadata, StoryObj } from '@storybook/angular';
+import { TranslocoMarkupModule } from 'ngx-transloco-markup';
+import { I18nStoryModule } from '../../../../xforge-common/i18n-story.module';
+import { UICommonModule } from '../../../../xforge-common/ui-common.module';
+import { ToggleBookComponent } from './toggle-book.component';
+
+const meta: Meta = {
+  title: 'Translate/ToggleBook',
+  component: ToggleBookComponent,
+  decorators: [
+    moduleMetadata({
+      imports: [UICommonModule, I18nStoryModule, CommonModule, TranslocoModule, TranslocoMarkupModule]
+    })
+  ],
+  argTypes: {
+    progress: { control: { type: 'range', min: 0, max: 1, step: 0.01 } }
+  }
+};
+
+export default meta;
+
+interface StoryState {
+  book: number;
+  progress?: number;
+  hues: number[];
+  selected: boolean;
+  disabled: boolean;
+}
+
+type Story = StoryObj<StoryState>;
+
+export const Default: Story = {
+  args: {
+    book: 1,
+    progress: 0.37,
+    hues: [0]
+  }
+};
+
+export const Selected: Story = {
+  args: {
+    ...Default.args,
+    selected: true
+  }
+};
+
+export const TwoColor: Story = {
+  args: {
+    ...Selected.args,
+    hues: [0, 240]
+  }
+};
+
+export const ThreeColor: Story = {
+  args: {
+    ...Selected.args,
+    hues: [0, 120, 240]
+  }
+};
+
+export const Disabled: Story = {
+  args: {
+    book: 8,
+    disabled: true
+  }
+};