feat(toastr): add duplicates behavior

src/app/playground-components.ts

@@ -1114,6 +1114,12 @@ export const PLAYGROUND_COMPONENTS: ComponentLink[] = [
         component: 'ToastrPreventDuplicatesComponent',
         name: 'Toastr Prevent Duplicates',
       },
+      {
+        path: 'toastr-prevent-duplicates-behaviour.component',
+        link: '/toastr/toastr-prevent-duplicates-behaviour.component',
+        component: 'ToastrPreventDuplicatesBehaviourComponent',
+        name: 'Toastr Prevent Duplicates Behaviour',
+      },
       {
         path: 'toastr-showcase.component',
         link: '/toastr/toastr-showcase.component',

src/framework/theme/components/toastr/toastr-config.ts

@@ -15,6 +15,8 @@ type IconToClassMap = {
 
 export const NB_TOASTR_CONFIG = new InjectionToken<NbToastrConfig>('Default toastr options');
 
+export type NbDuplicateToastBehaviour = 'previous' | 'all';
+
 /**
  * The `NbToastrConfig` class describes configuration of the `NbToastrService.show` and global toastr configuration.
  * */
@@ -36,9 +38,15 @@ export class NbToastrConfig {
    * */
   destroyByClick: boolean = true;
   /**
-   * If preventDuplicates is true then the next toast with the same title and message will not be rendered.
+   * If preventDuplicates is true then the toast with the same title, message and status will not be rendered.
+   * Find duplicates behaviour determined by `preventDuplicates`.
+   * The default `previous` duplicate behaviour is used.
    * */
   preventDuplicates: boolean = false;
+  /**
+   * Determines the how to threat duplicates.
+   * */
+  duplicatesBehaviour: NbDuplicateToastBehaviour = 'previous';
   /**
    * Determines render icon or not.
    * */

src/framework/theme/components/toastr/toastr.service.spec.ts

@@ -1,8 +1,8 @@
-import { NbToastrContainerRegistry, NbToastrService } from './toastr.service';
+import { NbToastContainer, NbToastrContainerRegistry, NbToastrService } from './toastr.service';
 import { NbGlobalLogicalPosition, NbGlobalPhysicalPosition } from '../cdk/overlay/position-helper';
 import { TestBed } from '@angular/core/testing';
 import { ComponentFactoryResolver } from '@angular/core';
-import { NbToastrModule } from '@nebular/theme';
+import { NbToast, NbToastrModule } from '@nebular/theme';
 
 
 describe('toastr-service', () => {
@@ -222,3 +222,62 @@ describe('toastr-container-registry', () => {
     expect(topEnd).toBe(topRight);
   });
 });
+
+describe('toastr-container', () => {
+  let toastrContainer: NbToastContainer;
+  let containerRefStub: any;
+  let positionHelperStub: any;
+
+  beforeEach(() => {
+    positionHelperStub = {
+      isTopPosition() {
+        return true;
+      },
+    };
+
+    containerRefStub = {
+      instance: {
+        toasts: [],
+      },
+      changeDetectorRef: {
+        detectChanges() {},
+      },
+    };
+  });
+
+  beforeEach(() => {
+    toastrContainer = new NbToastContainer(<any> {}, containerRefStub, positionHelperStub);
+  });
+
+  it('should prevent duplicates if previous toast is the same', () => {
+    const toast1 = {
+      title: 'toast1',
+      message: 'message',
+      config: { status: 'dander', preventDuplicates: true, duplicatesBehaviour: 'previous' },
+    };
+
+    const toast2 = Object.assign({title: 'toast2'}, toast1);
+
+    toastrContainer.attach(<NbToast> toast1);
+    toastrContainer.attach(<NbToast> toast2);
+    const duplicateToast = toastrContainer.attach(<NbToast> toast2);
+
+    expect(duplicateToast).toBeUndefined();
+  });
+
+  it('should prevent duplicates if existing toast is the same', () => {
+    const toast1 = {
+      title: 'toast1',
+      message: 'message',
+      config: { status: 'dander', preventDuplicates: true, duplicatesBehaviour: 'all' },
+    };
+
+    const toast2 = Object.assign({title: 'toast2'}, toast1);
+
+    toastrContainer.attach(<NbToast> toast1);
+    toastrContainer.attach(<NbToast> toast2);
+    const duplicateToast = toastrContainer.attach(<NbToast> toast1);
+
+    expect(duplicateToast).toBeUndefined();
+  });
+});

src/framework/theme/components/toastr/toastr.service.ts

@@ -7,10 +7,9 @@
 import { ComponentFactoryResolver, ComponentRef, Inject, Injectable } from '@angular/core';
 
 import { NbComponentPortal } from '../cdk/overlay/mapping';
-import { NbOverlayService } from '../cdk/overlay/overlay-service';
+import { NbOverlayService, patch } from '../cdk/overlay/overlay-service';
 import { NbPositionBuilderService } from '../cdk/overlay/overlay-position';
 import { NbGlobalLogicalPosition, NbGlobalPosition, NbPositionHelper } from '../cdk/overlay/position-helper';
-import { patch } from '../cdk/overlay/overlay-service';
 import { NbToastrContainerComponent } from './toastr-container.component';
 import { NB_TOASTR_CONFIG, NbToastrConfig } from './toastr-config';
 import { NbToast } from './model';
@@ -61,16 +60,34 @@ export class NbToastContainer {
   }
 
   destroy(toast: NbToast) {
+    if (this.prevToast === toast) {
+      this.prevToast = null;
+    }
+
     this.toasts = this.toasts.filter(t => t !== toast);
     this.updateContainer();
   }
 
   protected isDuplicate(toast: NbToast): boolean {
-    return this.prevToast
-      && this.prevToast.message === toast.message
-      && this.prevToast.title === toast.title;
+    return toast.config.duplicatesBehaviour === 'previous'
+      ? this.isDuplicatePrevious(toast)
+      : this.isDuplicateAmongAll(toast);
   }
 
+  protected isDuplicatePrevious(toast: NbToast): boolean {
+    return this.prevToast && this.toastDuplicateCompareFunc(this.prevToast, toast);
+  }
+
+  protected isDuplicateAmongAll(toast: NbToast): boolean {
+    return this.toasts.some(t => this.toastDuplicateCompareFunc(t, toast));
+  }
+
+  protected toastDuplicateCompareFunc = (t1: NbToast, t2: NbToast): boolean => {
+    return t1.message === t2.message
+      && t1.title === t2.title
+      && t1.config.status === t2.config.status;
+  };
+
   protected attachToast(toast: NbToast): NbToastComponent {
     if (this.positionHelper.isTopPosition(toast.config.position)) {
       return this.attachToTop(toast);
@@ -197,11 +214,17 @@ export class NbToastrContainerRegistry {
  *
  * @stacked-example(Destroy by click, toastr/toastr-destroy-by-click.component)
  *
- * `preventDuplicates` - don't create new toast if it has the same title and the same message with previous one.
+ * `preventDuplicates` - don't create new toast if it has the same title, message and status.
  * Default is false.
  *
  * @stacked-example(Prevent duplicates, toastr/toastr-prevent-duplicates.component)
  *
+ * `duplicatesBehaviour` - determines how to threat the toasts duplication.
+ * Compare with the previous message (`NbDuplicateToastBehaviour.PREVIOUS`)
+ * or with all visible messages (`NbDuplicateToastBehaviour.ALL`).
+ *
+ * @stacked-example(Prevent duplicates behaviour , toastr/toastr-prevent-duplicates-behaviour.component)
+ *
  * `hasIcon` - if true then render toast icon.
  * `icon` - you can pass icon class that will be applied into the toast.
  *

src/playground/with-layout/toastr/toastr-prevent-duplicates-behaviour.component.ts

@@ -0,0 +1,48 @@
+import { Component, HostBinding } from '@angular/core';
+import { NbDuplicateToastBehaviour, NbToastrService } from '@nebular/theme';
+
+@Component({
+  selector: 'nb-toastr-prevent-duplicates-behaviour',
+  template: `
+    <button nbButton (click)="showToast('Toast 1', 'success')">Show toast 1</button>
+    <button nbButton (click)="showToast('Toast 2', 'danger')">Show toast 2</button>
+
+    <nb-radio-group [(ngModel)]="option">
+      <nb-radio
+        *ngFor="let option of options"
+        [value]="option.value">
+        {{ option.label }}
+      </nb-radio>
+    </nb-radio-group>
+  `,
+  styles: [
+    `
+      ::ng-deep nb-layout-column {
+        height: 80vw;
+      }
+    `,
+  ],
+})
+
+export class ToastrPreventDuplicatesBehaviourComponent {
+
+  @HostBinding('class')
+  classes = 'example-items-rows';
+
+  constructor(private toastrService: NbToastrService) {
+  }
+
+  options = [
+    { value: 'previous' , label: 'Duplicate previous', checked: true },
+    { value: 'all' , label: 'Duplicate all' },
+  ];
+
+  option: NbDuplicateToastBehaviour = 'previous';
+
+  showToast(message, status) {
+    this.toastrService.show(
+      message,
+      `This is toast title`,
+      { preventDuplicates: true, duplicatesBehaviour: this.option, status });
+  }
+}

src/playground/with-layout/toastr/toastr-routing.module.ts

@@ -13,6 +13,7 @@ import { ToastrPositionsComponent } from './toastr-positions.component';
 import { ToastrPreventDuplicatesComponent } from './toastr-prevent-duplicates.component';
 import { ToastrShowcaseComponent } from './toastr-showcase.component';
 import { ToastrStatusesComponent } from './toastr-statuses.component';
+import { ToastrPreventDuplicatesBehaviourComponent } from './toastr-prevent-duplicates-behaviour.component';
 
 const routes: Route[] = [
   {
@@ -35,6 +36,10 @@ const routes: Route[] = [
     path: 'toastr-prevent-duplicates.component',
     component: ToastrPreventDuplicatesComponent,
   },
+  {
+    path: 'toastr-prevent-duplicates-behaviour.component',
+    component: ToastrPreventDuplicatesBehaviourComponent,
+  },
   {
     path: 'toastr-showcase.component',
     component: ToastrShowcaseComponent,

src/playground/with-layout/toastr/toastr.module.ts

@@ -5,7 +5,7 @@
  */
 
 import { NgModule } from '@angular/core';
-import { NbButtonModule, NbToastrModule } from '@nebular/theme';
+import { NbButtonModule, NbRadioModule, NbToastrModule } from '@nebular/theme';
 import { ToastrRoutingModule } from './toastr-routing.module';
 import { ToastrDestroyByClickComponent } from './toastr-destroy-by-click.component';
 import { ToastrDurationComponent } from './toastr-duration.component';
@@ -14,6 +14,9 @@ import { ToastrPositionsComponent } from './toastr-positions.component';
 import { ToastrPreventDuplicatesComponent } from './toastr-prevent-duplicates.component';
 import { ToastrShowcaseComponent } from './toastr-showcase.component';
 import { ToastrStatusesComponent } from './toastr-statuses.component';
+import { ToastrPreventDuplicatesBehaviourComponent } from './toastr-prevent-duplicates-behaviour.component';
+import { CommonModule } from '@angular/common';
+import { FormsModule } from '@angular/forms';
 
 @NgModule({
   declarations: [
@@ -22,12 +25,16 @@ import { ToastrStatusesComponent } from './toastr-statuses.component';
     ToastrIconComponent,
     ToastrPositionsComponent,
     ToastrPreventDuplicatesComponent,
+    ToastrPreventDuplicatesBehaviourComponent,
     ToastrShowcaseComponent,
     ToastrStatusesComponent,
   ],
   imports: [
+    CommonModule,
+    FormsModule,
     NbToastrModule.forRoot(),
     NbButtonModule,
+    NbRadioModule,
     ToastrRoutingModule,
   ],
 })