add Accordion component

projects/showcase/src/app/components/accordion/showcase-accordion.component.html

@@ -0,0 +1,3 @@
+<systelab-accordion [headerTitle]="'Accordion header'">
+    <showcase-progress-bar></showcase-progress-bar>
+</systelab-accordion>

projects/showcase/src/app/components/accordion/showcase-accordion.component.ts

@@ -0,0 +1,10 @@
+import { Component } from '@angular/core';
+
+@Component({
+	selector:    'showcase-accordion',
+	templateUrl: 'showcase-accordion.component.html'
+})
+export class ShowcaseAccordion {
+	constructor() {
+	}
+}

projects/showcase/src/app/components/showcase-components.component.html

@@ -107,6 +107,9 @@
     <showcase-title [href]="'progress-bar'">Progress bar</showcase-title>
     <showcase-progress-bar></showcase-progress-bar>
 
+    <showcase-title [href]="'accordion'">Accordion</showcase-title>
+    <showcase-accordion></showcase-accordion>
+
     <showcase-title [href]="'percentage-circle'">Percentage Circle</showcase-title>
     <showcase-percentage-circle></showcase-percentage-circle>
 

projects/showcase/src/app/showcase.module.ts

@@ -115,6 +115,7 @@ import {
 } from './components/progress-bars/progressbar-with-text-dialog/showcase-progressbar-with-text-dialog.component';
 import { ShowcaseImageViewerComponent } from './components/image-viewer/showcase-image-viewer.component';
 import { CdkTreeModule } from '@angular/cdk/tree';
+import { ShowcaseAccordion } from './components/accordion/showcase-accordion.component';
 
 @NgModule({ declarations: [
         ShowcaseComponent,
@@ -204,6 +205,7 @@ import { CdkTreeModule } from '@angular/cdk/tree';
         ShowcaseInteractiveComponent,
         ShowcaseProgressBarWithTextDialog,
         ShowcaseImageViewerComponent,
+                ShowcaseAccordion
     ],
     bootstrap: [ShowcaseComponent],
     imports: [

projects/systelab-components/src/lib/accordion/accordion.component.html

@@ -0,0 +1,10 @@
+<div class="slab-flex-1 d-flex flex-column">
+    <div class="mlab-accordion-header d-flex align-items-center font-weight-bold px-3" [ngStyle]="{'backgroundColor': headerColor}" (click)="isCollapsed = !isCollapsed">
+        <i class="d-flex justify-content-center align-items-center position-relative" [class.icon-chevron-circle-up]="!isCollapsed" [class.icon-chevron-circle-down]="isCollapsed" [ngClass]="{'text-primary': !iconColor}" [ngStyle]="{'color': iconColor}"></i>
+        <span class="d-block ml-3">{{ headerTitle }}</span>
+    </div>
+    <div class="collapsible-content d-flex" [class.collapsed]="isCollapsed" [class.p-3]="!isCollapsed"
+         [ngStyle]="{'max-height.px': isCollapsed ? '0' : contentMaxHeight, 'overflow': withOverflow ? 'auto' : 'hidden'}">
+        <ng-content />
+    </div>
+</div>

projects/systelab-components/src/lib/accordion/accordion.component.scss

@@ -0,0 +1,32 @@
+.mlab-accordion-header {
+  background-color: lightgrey;
+  border-radius: 4px 4px 0 0;
+  height: 40px;
+  i {
+    &:after {
+      content: '';
+      background-color: white;
+      width: 15px;
+      height: 15px;
+      z-index: 1;
+      position: absolute;
+    }
+    &:before {
+      z-index: 2;
+    }
+    font-size: 25px;
+    &:hover {
+      cursor: pointer;
+    }
+  }
+}
+
+.collapsible-content {
+  transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
+  opacity: 1;
+  border: 1px solid var(--slab_table_border_color) !important;
+}
+
+.collapsed {
+  opacity: 0;
+}

projects/systelab-components/src/lib/accordion/accordion.component.spec.ts

@@ -0,0 +1,83 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { BrowserModule, By } from '@angular/platform-browser';
+import { provideHttpClient, withInterceptorsFromDi } from '@angular/common/http';
+import { Accordion } from './accordion.component';
+import { PreferencesService } from 'systelab-preferences';
+
+describe('Systelab Accordion', () => {
+	let fixture: ComponentFixture<Accordion>;
+	let component: Accordion;
+
+	beforeEach(async () => {
+		await TestBed.configureTestingModule({
+			declarations: [],
+			imports: [BrowserModule],
+			providers: [
+				PreferencesService,
+				provideHttpClient(withInterceptorsFromDi())
+			]
+		}).compileComponents();
+
+	});
+
+	beforeEach(() => {
+		fixture = TestBed.createComponent(Accordion);
+		component = fixture.componentInstance;
+		fixture.detectChanges();
+	});
+
+	it('should be instantiate', () => {
+		expect(fixture.componentInstance).toBeDefined();
+	});
+
+	it('should be height 0 when isCollapse is true', async () => {
+		component.isCollapsed = true;
+		fixture.detectChanges();
+		await fixture.whenStable();
+		const collapsibleContent = fixture.debugElement.query(By.css('.collapsible-content'));
+		const maxHeight = parseInt(getComputedStyle(collapsibleContent.nativeElement).maxHeight, 10);
+		expect(maxHeight).toEqual(0);
+	});
+
+	it('should be height contentMaxHeight when isCollapse is false', async () => {
+		component.isCollapsed = false;
+		fixture.detectChanges();
+		await fixture.whenStable();
+		const collapsibleContent = fixture.debugElement.query(By.css('.collapsible-content'));
+		const maxHeight = parseInt(getComputedStyle(collapsibleContent.nativeElement).maxHeight, 10);
+		expect(maxHeight).toEqual(component.contentMaxHeight);
+	});
+
+	it('should be collapsed if is expanded and clicks icon button', async () => {
+		component.isCollapsed = false;
+		const collapseExpandIcon = fixture.debugElement.query(By.css('.mlab-accordion-header'));
+		collapseExpandIcon.triggerEventHandler('click', null);
+		fixture.detectChanges();
+		await fixture.whenStable();
+		expect(component.isCollapsed).toBeTrue();
+	});
+
+	it('should be expanded if is collapsed and clicks icon button', async () => {
+		component.isCollapsed = true;
+		const collapseExpandIcon = fixture.debugElement.query(By.css('.mlab-accordion-header'));
+		collapseExpandIcon.triggerEventHandler('click', null);
+		fixture.detectChanges();
+		await fixture.whenStable();
+		expect(component.isCollapsed).toBeFalse();
+	});
+
+	it('should be get isCollapsed value from preferences id flag preferenceName exists', async () => {
+		const valueReturned: boolean = true;
+		const initianPreferenceName = 'testName';
+		component.isCollapsed = false;
+		component.preferenceName = initianPreferenceName;
+		const preferenceServiceGetSpy = spyOn<any>(component['preferenceService'], 'get').and.returnValue(valueReturned);
+		const preferenceServicePutSpy = spyOn<any>(component['preferenceService'], 'put').and.callThrough();
+		component.ngOnInit();
+		await fixture.whenStable();
+		expect(component.preferenceName).toEqual(`${component['preferencePrefix']}.${initianPreferenceName}`);
+		expect(preferenceServiceGetSpy).toHaveBeenCalledWith(component.preferenceName, false);
+		expect(component.isCollapsed).toEqual(valueReturned);
+		expect(preferenceServicePutSpy).toHaveBeenCalledWith(component.preferenceName, valueReturned);
+	});
+});

projects/systelab-components/src/lib/accordion/accordion.component.ts

@@ -0,0 +1,30 @@
+import { Component, Input, OnInit } from '@angular/core';
+import { PreferencesService } from 'systelab-preferences';
+
+@Component({
+	selector:    'systelab-accordion',
+	templateUrl: './accordion.component.html',
+	styleUrls: ['./accordion.component.scss']
+})
+// eslint-disable-next-line @angular-eslint/component-class-suffix
+export class Accordion implements OnInit {
+	@Input() headerTitle: string = '';
+	@Input() preferenceName: string;
+	@Input() contentMaxHeight: number = 300;
+	@Input() withOverflow: boolean = false;
+	@Input() headerColor: string;
+	@Input() iconColor: string;
+	public isCollapsed: boolean = false;
+	private preferencePrefix: string = 'accordionStatus';
+
+	constructor(private readonly preferenceService: PreferencesService) {
+	}
+
+	public ngOnInit() {
+		if(this.preferenceName) {
+			this.preferenceName = `${this.preferencePrefix}.${this.preferenceName}`;
+			this.isCollapsed = this.preferenceService.get(this.preferenceName, false);
+			this.preferenceService.put(this.preferenceName, this.isCollapsed);
+		}
+	}
+}

projects/systelab-components/src/lib/systelab-components.module.ts

@@ -104,6 +104,7 @@ import {
 	PositiveIntegerInputCellEditorComponent
 } from './grid/custom-cells/positive-integer/positive-integer-input-cell-editor.component';
 import { TestIdDirective } from './directives/test-id.directive';
+import { Accordion } from './accordion/accordion.component';
 
 export const factory = () => {
 	const systelabComponentsModuleCreated = (factory as any)._systelabComponentsModuleCreated || false;
@@ -223,6 +224,7 @@ const providers = [
 		PositiveIntegerInputCellEditorComponent,
 		NumpadDecimalNumericDirective,
   		TestIdDirective,
+		Accordion,
 	],
 	exports: [
 		SliderComponent,
@@ -310,7 +312,8 @@ const providers = [
 		NumpadDecimalNumericDirective,
 		TestIdDirective,
 		NumpadDecimalNumericDirective,
-		PositiveIntegerInputCellEditorComponent
+		PositiveIntegerInputCellEditorComponent,
+		Accordion
 	],
 })
 export class SystelabComponentsModule {

projects/systelab-components/src/public-api.ts

@@ -121,6 +121,7 @@ export * from './lib/listbox/abstract-listbox.component';
 export * from './lib/listbox/abstract-api-listbox.component';
 export * from './lib/listbox/abstract-api-tree-listbox.component';
 export * from './lib/sortable-list/abstract-sortable-list.component';
+export * from './lib/accordion/accordion.component';
 export * from './lib/add-remove-list/abstract-add-remove-list.component';
 export * from './lib/tree/tree-node';
 export * from './lib/tree/abstract-tree.component';