Add pagination component

package.json

@@ -78,7 +78,7 @@
     "@angular/upgrade": "2.2.3",
     "@angularclass/bootloader": "1.0.1",
     "@angularclass/idle-preload": "1.0.4",
-    "@ng-bootstrap/ng-bootstrap": "1.0.0-alpha.15",
+    "@ng-bootstrap/ng-bootstrap": "1.0.0-alpha.24",
     "@ngrx/core": "^1.2.0",
     "@ngrx/effects": "^2.0.0",
     "@ngrx/router-store": "^1.2.5",
@@ -90,7 +90,7 @@
     "angular2-universal": "2.1.0-rc.1",
     "angular2-universal-polyfills": "2.1.0-rc.1",
     "body-parser": "1.15.2",
-    "bootstrap": "4.0.0-alpha.5",
+    "bootstrap": "4.0.0-alpha.6",
     "cerialize": "^0.1.13",
     "compression": "1.6.2",
     "express": "4.14.0",
@@ -100,6 +100,7 @@
     "jsonschema": "^1.1.1",
     "methods": "1.1.2",
     "morgan": "1.7.0",
+    "ng2-pagination": "^2.0.0",
     "ng2-translate": "4.2.0",
     "preboot": "4.5.2",
     "rxjs": "5.0.0-beta.12",

resources/i18n/en.json

@@ -15,6 +15,14 @@
     "home": "Home"
   },
 
+  "pagination": {
+    "results-per-page": "Results Per Page",
+    "showing": {
+      "label" : "Now showing items ",
+      "detail": "{{ range }} of {{ total }}"
+    }
+  },
+
   "title": "DSpace",
 
   "404": {

src/app/app.component.html

@@ -10,6 +10,19 @@
           <span *ngIf="!EnvConfig.production">development</span>
           <span *ngIf="EnvConfig.production">production</span>
         </h2>
+
+        {{options.id}}
+        <!--ds-pagination [paginationOptions]="options"
+                       [collectionSize]="100"
+                       (pageChange)="options.currentPage = $event"
+                       (pageSizeChange)="options.pageSize = $event">
+
+          <ul>
+            <li *ngFor="let item of collection | paginate: { itemsPerPage: options.pageSize, currentPage: options.currentPage, totalItems: 100 }"> {{item}} </li>
+          </ul>
+
+        </ds-pagination-->
+
         <router-outlet></router-outlet>
       </div>
     </main>

src/app/app.component.ts

@@ -11,6 +11,8 @@ import { HostWindowState } from "./shared/host-window.reducer";
 import { Store } from "@ngrx/store";
 import { HostWindowResizeAction } from "./shared/host-window.actions";
 
+import { PaginationOptions } from './core/shared/pagination-options.model';
+
 import { GLOBAL_CONFIG, GlobalConfig } from '../config';
 
 @Component({
@@ -23,8 +25,9 @@ import { GLOBAL_CONFIG, GlobalConfig } from '../config';
 export class AppComponent implements OnDestroy, OnInit {
   private translateSubscription: any;
 
+  collection = [];
   example: string;
-
+  options: PaginationOptions = new PaginationOptions();
   data: any = {
     greeting: 'Hello',
     recipient: 'World'
@@ -39,12 +42,20 @@ export class AppComponent implements OnDestroy, OnInit {
     translate.setDefaultLang('en');
     // the lang to use, if the lang isn't available, it will use the current loader to get them
     translate.use('en');
+    for (let i = 1; i <= 100; i++) {
+      this.collection.push(`item ${i}`);
+    }
   }
 
   ngOnInit() {
     this.translateSubscription = this.translate.get('example.with.data', { greeting: 'Hello', recipient: 'DSpace' }).subscribe((translation: string) => {
       this.example = translation;
     });
+    this.onLoad();
+    this.options.id = 'app';
+    //this.options.currentPage = 1;
+    this.options.pageSize = 15;
+    this.options.size = 'sm';
   }
 
   ngOnDestroy() {
@@ -60,4 +71,9 @@ export class AppComponent implements OnDestroy, OnInit {
     );
   }
 
+  private onLoad() {
+    this.store.dispatch(
+      new HostWindowResizeAction(window.innerWidth, window.innerHeight)
+    );
+  }
 }

src/app/app.module.ts

@@ -20,7 +20,7 @@ import { PageNotFoundComponent } from './pagenotfound/pagenotfound.component';
     SharedModule,
     HomeModule,
     CoreModule.forRoot(),
-    AppRoutingModule,
+    AppRoutingModule
   ],
   providers: [
   ]

src/app/core/cache/request-cache.reducer.spec.ts

@@ -6,6 +6,7 @@ import {
 } from "./request-cache.actions";
 import deepFreeze = require("deep-freeze");
 import { OpaqueToken } from "@angular/core";
+import { PaginationOptions } from "../shared/pagination-options.model";
 
 class NullAction extends RequestCacheRemoveAction {
   type = null;
@@ -26,7 +27,19 @@ describe("requestCacheReducer", () => {
     "be8325f7-243b-49f4-8a4b-df2b793ff3b5"
   ];
   const resourceID = "9978";
-  const paginationOptions = { "resultsPerPage": 10, "currentPage": 1 };
+  const paginationOptions: PaginationOptions = {
+    "id": "test",
+    "currentPage": 1,
+    "pageSizeOptions": [5, 10, 20, 40, 60, 80, 100],
+    "disabled": false,
+    "boundaryLinks": false,
+    "directionLinks": true,
+    "ellipses": true,
+    "maxSize": 0,
+    "pageSize": 10,
+    "rotate": false,
+    "size": 'sm'
+  };
   const sortOptions = { "field": "id", "direction": 0 };
   const testState = {
     [keys[0]]: {

src/app/core/cache/request-cache.service.spec.ts

@@ -4,6 +4,7 @@ import { RequestCacheState, RequestCacheEntry } from "./request-cache.reducer";
 import { OpaqueToken } from "@angular/core";
 import { RequestCacheFindAllAction, RequestCacheFindByIDAction } from "./request-cache.actions";
 import { Observable } from "rxjs";
+import { PaginationOptions } from "../shared/pagination-options.model";
 
 describe("RequestCacheService", () => {
   let service: RequestCacheService;
@@ -12,7 +13,19 @@ describe("RequestCacheService", () => {
   const keys = ["125c17f89046283c5f0640722aac9feb", "a06c3006a41caec5d635af099b0c780c"];
   const serviceTokens = [new OpaqueToken('service1'), new OpaqueToken('service2')];
   const resourceID = "9978";
-  const paginationOptions = { "resultsPerPage": 10, "currentPage": 1 };
+  const paginationOptions: PaginationOptions = {
+    "id": "test",
+    "currentPage": 1,
+    "pageSizeOptions": [5, 10, 20, 40, 60, 80, 100],
+    "disabled": false,
+    "boundaryLinks": false,
+    "directionLinks": true,
+    "ellipses": true,
+    "maxSize": 0,
+    "pageSize": 10,
+    "rotate": false,
+    "size": 'sm'
+  };
   const sortOptions = { "field": "id", "direction": 0 };
   const timestamp = new Date().getTime();
   const validCacheEntry = (key) => {

src/app/core/core.module.ts

@@ -1,5 +1,6 @@
 import { NgModule, Optional, SkipSelf, ModuleWithProviders } from '@angular/core';
 import { CommonModule } from '@angular/common';
+
 import { SharedModule } from "../shared/shared.module";
 import { isNotEmpty } from "../shared/empty.util";
 import { FooterComponent } from "./footer/footer.component";
@@ -8,6 +9,7 @@ import { ObjectCacheService } from "./cache/object-cache.service";
 import { RequestCacheService } from "./cache/request-cache.service";
 import { CollectionDataService } from "./data-services/collection-data.service";
 import { ItemDataService } from "./data-services/item-data.service";
+import { PaginationOptions } from "./shared/pagination-options.model";
 
 const IMPORTS = [
   CommonModule,
@@ -27,6 +29,7 @@ const PROVIDERS = [
   ItemDataService,
   DSpaceRESTv2Service,
   ObjectCacheService,
+  PaginationOptions,
   RequestCacheService
 ];
 

src/app/core/shared/pagination-options.model.ts

@@ -1,12 +1,20 @@
-export class PaginationOptions {
+import { NgbPaginationConfig } from '@ng-bootstrap/ng-bootstrap';
+
+export class PaginationOptions extends NgbPaginationConfig {
   /**
-   * The number of results per page.
+   * ID for the pagination instance. Only useful if you wish to
+   * have more than once instance at a time in a given component.
    */
-  resultsPerPage: number = 10;
+  id: string;
 
   /**
    * The active page.
    */
   currentPage: number = 1;
 
+  /**
+   * A number array that represents options for a context pagination limit.
+   */
+  pageSizeOptions: Array<number> = [ 5, 10, 20, 40, 60, 80, 100 ];
+
 }

src/app/header/header.component.html

@@ -1,14 +1,14 @@
 <header>
-  <nav class="navbar navbar-dark bg-inverse">
-    <button class="navbar-toggler hidden-sm-up" type="button" (click)="toggle()" aria-controls="collapsingNav" aria-expanded="false" aria-label="Toggle navigation">
-      <i class="fa fa-bars fa-fw" aria-hidden="true"></i>
+  <nav class="navbar navbar-toggleable-sm navbar-inverse bg-inverse">
+    <button class="navbar-toggler navbar-toggler-right" type="button" (click)="toggle()" aria-controls="collapsingNav" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon fa fa-bars fa-fw" aria-hidden="true"></span>
     </button>
     <div [ngClass]="{'clearfix': !(isNavBarCollapsed | async)}">
       <a class="navbar-brand" routerLink="/home">
         <!-- TODO: add logo here -->{{ 'title' | translate }}</a>
     </div>
-    <div [ngbCollapse]="(isNavBarCollapsed | async)" class="collapse navbar-toggleable-xs" id="collapsingNav">
-      <ul class="nav navbar-nav">
+    <div [ngbCollapse]="(isNavBarCollapsed | async)" class="collapse navbar-collapse" id="collapsingNav">
+      <ul class="navbar-nav mr-auto">
         <li class="nav-item">
           <a class="nav-link" routerLink="/home" routerLinkActive="active"><i class="fa fa-home fa-fw" aria-hidden="true"></i> {{ 'nav.home' | translate }}<span class="sr-only">(current)</span></a>
         </li>

src/app/header/header.component.scss

@@ -4,10 +4,11 @@ header nav.navbar {
   border-radius: 0rem;
 }
 
-header nav.navbar .navbar-toggler {
-  float: right;
-}
-
 header nav.navbar .navbar-toggler:hover {
   cursor: pointer;
 }
+
+header nav.navbar .navbar-toggler .navbar-toggler-icon {
+  background-image: none !important;
+  line-height: 1.5;
+}

src/app/header/header.component.spec.ts

@@ -58,7 +58,7 @@ describe('HeaderComponent', () => {
     });
 
     it("should close the menu", () => {
-      expect(menu.classList).not.toContain('in');
+      expect(menu.classList).not.toContain('show');
     });
 
   });
@@ -73,7 +73,7 @@ describe('HeaderComponent', () => {
     });
 
     it("should open the menu", () => {
-      expect(menu.classList).toContain('in');
+      expect(menu.classList).toContain('show');
     });
 
   });

src/app/shared/host-window.actions.ts

@@ -10,10 +10,26 @@ export class HostWindowResizeAction implements Action {
   payload: {
     width: number;
     height: number;
+    breakPoint: string;
   };
 
   constructor(width: number, height: number) {
-    this.payload = { width, height }
+    let breakPoint = this.getBreakpoint(width);
+    this.payload = { width, height, breakPoint }
+  }
+
+  getBreakpoint(windowWidth: number) {
+    if(windowWidth < 575) {
+      return 'xs';
+    } else if (windowWidth >= 576 && windowWidth < 767) {
+      return 'sm';
+    } else if (windowWidth >= 768 && windowWidth < 991) {
+      return 'md';
+    } else if (windowWidth >= 992 && windowWidth < 1199) {
+      return 'lg';
+    } else if (windowWidth >= 1200) {
+      return 'xl';
+    }
   }
 }
 

src/app/shared/host-window.reducer.spec.ts

@@ -13,32 +13,34 @@ class NullAction extends HostWindowResizeAction {
 describe('hostWindowReducer', () => {
 
   it("should return the current state when no valid actions have been made", () => {
-    const state = { width: 800, height: 600 };
+    const state = { width: 800, height: 600, breakPoint: 'md' };
     const action = new NullAction();
     const newState = hostWindowReducer(state, action);
 
     expect(newState).toEqual(state);
   });
 
-  it("should start with width = null and height = null", () => {
+  it("should start with width = null, height = null and breakPoint = null", () => {
     const action = new NullAction();
     const initialState = hostWindowReducer(undefined, action);
 
     expect(initialState.width).toEqual(null);
     expect(initialState.height).toEqual(null);
+    expect(initialState.breakPoint).toEqual(null);
   });
 
-  it("should update the width and height in the state in response to a RESIZE action", () => {
-    const state = { width: 800, height: 600 };
+  it("should update the width, height and breakPoint in the state in response to a RESIZE action", () => {
+    const state = { width: 800, height: 600, breakPoint: 'md' };
     const action = new HostWindowResizeAction(1024, 768);
     const newState = hostWindowReducer(state, action);
 
     expect(newState.width).toEqual(1024);
     expect(newState.height).toEqual(768);
+    expect(newState.breakPoint).toEqual('lg');
   });
 
   it("should perform the RESIZE action without affecting the previous state", () => {
-    const state = { width: 800, height: 600 };
+    const state = { width: 800, height: 600, breakPoint: 'md' };
     deepFreeze(state);
 
     const action = new HostWindowResizeAction(1024, 768);

src/app/shared/host-window.reducer.ts

@@ -3,11 +3,13 @@ import { HostWindowAction, HostWindowActionTypes } from "./host-window.actions";
 export interface HostWindowState {
   width: number;
   height: number;
+  breakPoint: string;
 }
 
 const initialState: HostWindowState = {
   width: null,
-  height: null
+  height: null,
+  breakPoint: null
 };
 
 export const hostWindowReducer = (state = initialState, action: HostWindowAction): HostWindowState => {

src/app/shared/pagination/pagination.component.html

@@ -0,0 +1,32 @@
+<div class="pagination-masked clearfix top">
+  <div class="row">
+    <div class="col pagination-info">
+      <span class="align-middle hidden-xs-down">{{ 'pagination.showing.label' | translate }}</span>
+      <span class="align-middle">{{ 'pagination.showing.detail' | translate:showingDetail }}</span>
+    </div>
+    <div class="col">
+      <div ngbDropdown #paginationControls="ngbDropdown" class="d-inline-block float-right">
+        <button class="btn btn-outline-primary" id="paginationControls" (click)="$event.stopPropagation(); (paginationControls.isOpen())?paginationControls.close():paginationControls.open();"><i class="fa fa-cog" aria-hidden="true"></i></button>
+        <div class="dropdown-menu dropdown-menu-right" id="paginationControlsDropdownMenu" aria-labelledby="paginationControls">
+          <h6 class="dropdown-header">{{ 'pagination.results-per-page' | translate}}</h6>
+          <button class="dropdown-item" style="padding-left: 20px" *ngFor="let item of pageSizeOptions " (click)="setPageSize(item)"><i class="fa fa-check {{(item != paginationOptions.pageSize) ? 'invisible' : ''}}" aria-hidden="true"></i> {{item}} </button>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
+<ng-content></ng-content>
+
+<div class="pagination justify-content-center clearfix bottom">
+  <ngb-pagination [boundaryLinks]="paginationOptions.boundaryLinks"
+                  [collectionSize]="collectionSize"
+                  [disabled]="paginationOptions.disabled"
+                  [ellipses]="paginationOptions.ellipses"
+                  [maxSize]="(windowBreakPoint.breakPoint == 'xs')?5:paginationOptions.maxSize"
+                  [(page)]="currentPage"
+                  (pageChange)="doPageChange($event)"
+                  [pageSize]="pageSize"
+                  [rotate]="paginationOptions.rotate"
+                  [size]="(windowBreakPoint.breakPoint == 'xs')?'sm':paginationOptions.size"></ngb-pagination>
+</div>

src/app/shared/pagination/pagination.component.spec.ts

@@ -0,0 +1,321 @@
+// ... test imports
+import {
+  async,
+  ComponentFixture,
+  inject,
+  TestBed, fakeAsync, tick, getTestBed
+} from '@angular/core/testing';
+import {
+  Component,
+  CUSTOM_ELEMENTS_SCHEMA,
+  DebugElement
+} from "@angular/core";
+import { ActivatedRoute, Router } from "@angular/router";
+import { RouterTestingModule } from '@angular/router/testing';
+import { By } from '@angular/platform-browser';
+import Spy = jasmine.Spy;
+import { TranslateModule, TranslateLoader } from "ng2-translate";
+import { Store, StoreModule } from "@ngrx/store";
+
+// Load the implementations that should be tested
+import { CommonModule } from '@angular/common';
+
+import { Ng2PaginationModule } from 'ng2-pagination';
+import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
+
+import { PaginationComponent } from './pagination.component';
+import { PaginationOptions } from '../../core/shared/pagination-options.model';
+import { MockTranslateLoader } from "../testing/mock-translate-loader";
+
+import { GLOBAL_CONFIG, EnvConfig } from '../../../config';
+import { MockStore, MockAction } from "../testing/mock-store";
+import { ActivatedRouteStub, RouterStub } from "../testing/router-stubs";
+
+function createTestComponent<T>(html: string, type: {new (...args: any[]): T}): ComponentFixture<T> {
+  TestBed.overrideComponent(type, {
+    set: { template: html }
+  });
+  let fixture = TestBed.createComponent(type);
+
+  fixture.detectChanges();
+  return fixture as ComponentFixture<T>;
+}
+
+function expectPages(fixture: ComponentFixture<any>, pagesDef: string[]): void {
+  let de = fixture.debugElement.query(By.css('.pagination'));
+  let pages = de.nativeElement.querySelectorAll('li');
+
+  expect(pages.length).toEqual(pagesDef.length);
+
+  for (let i = 0; i < pagesDef.length; i++) {
+    let pageDef = pagesDef[i];
+    let classIndicator = pageDef.charAt(0);
+
+    if (classIndicator === '+') {
+      expect(pages[i].classList.contains("active")).toBeTruthy();
+      expect(pages[i].classList.contains("disabled")).toBeFalsy();
+      expect(normalizeText(pages[i].textContent)).toEqual(pageDef.substr(1) + ' (current)');
+    } else if (classIndicator === '-') {
+      expect(pages[i].classList.contains("active")).toBeFalsy();
+      expect(pages[i].classList.contains("disabled")).toBeTruthy();
+      expect(normalizeText(pages[i].textContent)).toEqual(pageDef.substr(1));
+      if (normalizeText(pages[i].textContent) !== '...') {
+        expect(pages[i].querySelector('a').getAttribute('tabindex')).toEqual('-1');
+      }
+    } else {
+      expect(pages[i].classList.contains("active")).toBeFalsy();
+      expect(pages[i].classList.contains("disabled")).toBeFalsy();
+      expect(normalizeText(pages[i].textContent)).toEqual(pageDef);
+      if (normalizeText(pages[i].textContent) !== '...') {
+        expect(pages[i].querySelector('a').hasAttribute('tabindex')).toBeFalsy();
+      }
+    }
+  }
+}
+
+function changePageSize(fixture: ComponentFixture<any>, pageSize: string): void {
+  let buttonEl = fixture.nativeElement.querySelector('#paginationControls');
+  let activatedRouteStub: ActivatedRouteStub;
+  let routerStub: RouterStub;
+
+  buttonEl.click();
+
+  let dropdownMenu = fixture.debugElement.query(By.css('#paginationControlsDropdownMenu'));
+  let buttons = dropdownMenu.nativeElement.querySelectorAll('button');
+
+  for (let i = 0; i < buttons.length; i++) {
+    if (buttons[i].textContent.trim() == pageSize) {
+      buttons[i].click();
+      fixture.detectChanges();
+      break;
+    }
+  }
+}
+
+function changePage(fixture: ComponentFixture<any>, idx: number): void {
+  let de = fixture.debugElement.query(By.css('.pagination'));
+  let buttons = de.nativeElement.querySelectorAll('li');
+
+  buttons[idx].querySelector('a').click();
+  fixture.detectChanges();
+}
+
+function normalizeText(txt: string): string {
+  return txt.trim().replace(/\s+/g, ' ');
+}
+
+describe('Pagination component', () => {
+
+  let fixture: ComponentFixture<PaginationComponent>;
+  let comp: PaginationComponent;
+  let testComp: TestComponent;
+  let testFixture: ComponentFixture<TestComponent>;
+  let de: DebugElement;
+  let html;
+  let mockStore: any;
+
+  let activatedRouteStub: ActivatedRouteStub;
+  let routerStub: RouterStub;
+
+  //Define initial state and test state
+  let _initialState = { width: 1600, height: 770, breakPoint: 'xl' };
+
+  // async beforeEach
+  beforeEach(async(() => {
+    activatedRouteStub = new ActivatedRouteStub();
+    routerStub = new RouterStub();
+    mockStore = new MockStore(_initialState);
+
+    TestBed.configureTestingModule({
+      imports: [CommonModule, StoreModule.provideStore({}), TranslateModule.forRoot({
+        provide: TranslateLoader,
+        useClass: MockTranslateLoader
+      }), Ng2PaginationModule, NgbModule.forRoot(),
+        RouterTestingModule.withRoutes([
+          {path: 'home', component: TestComponent}
+        ])],
+      declarations: [PaginationComponent, TestComponent], // declare the test component
+      providers: [
+        { provide: ActivatedRoute, useValue: activatedRouteStub },
+        { provide: GLOBAL_CONFIG, useValue: EnvConfig },
+        { provide: Router, useValue: routerStub },
+        { provide: Store, useValue: mockStore },
+        PaginationComponent
+      ],
+      schemas: [CUSTOM_ELEMENTS_SCHEMA]
+    });
+
+  }));
+
+  // synchronous beforeEach
+  beforeEach(() => {
+    html = `
+    <ds-pagination #p="paginationComponent"
+                   [paginationOptions]="paginationOptions" 
+                   [collectionSize]="collectionSize" 
+                   (pageChange)="pageChanged($event)"
+                   (pageSizeChange)="pageSizeChanged($event)">
+      <ul>
+        <li *ngFor="let item of collection | paginate: { itemsPerPage: paginationOptions.pageSize, 
+                    currentPage: paginationOptions.currentPage, totalItems: collectionSize }"> {{item}} </li>
+      </ul>
+    </ds-pagination>`;
+
+    testFixture = createTestComponent(html, TestComponent) as ComponentFixture<TestComponent>;
+    testComp = testFixture.componentInstance;
+
+  });
+
+  it('should create Pagination Component', inject([PaginationComponent], (app: PaginationComponent) => {
+    expect(app).toBeDefined();
+  }));
+
+  it('should render', () => {
+    expect(testComp.paginationOptions.id).toEqual('test');
+    expect(testComp.paginationOptions.currentPage).toEqual(1);
+    expect(testComp.paginationOptions.pageSize).toEqual(10);
+    expectPages(testFixture, ['-«', '+1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '»']);
+  });
+
+  it('should render and respond to page change', () => {
+    testComp.collectionSize = 30;
+
+    changePage(testFixture, 3);
+    expectPages(testFixture, ['«', '1', '2', '+3', '-»']);
+
+    changePage(testFixture, 0);
+    expectPages(testFixture, ['«', '1', '+2', '3', '»']);
+  });
+
+  it('should render and respond to collectionSize change', () => {
+
+    testComp.collectionSize = 30;
+    testFixture.detectChanges();
+    expectPages(testFixture, ['-«', '+1', '2', '3', '»']);
+
+    testComp.collectionSize = 40;
+    testFixture.detectChanges();
+    expectPages(testFixture, ['-«', '+1', '2', '3', '4', '»']);
+  });
+
+  it('should render and respond to pageSize change', () => {
+
+    testComp.collectionSize = 30;
+    testFixture.detectChanges();
+    expectPages(testFixture, ['-«', '+1', '2', '3', '»']);
+
+    changePageSize(testFixture, '5');
+    expectPages(testFixture, ['-«', '+1', '2', '3', '4', '5', '6', '»']);
+
+    changePageSize(testFixture, '10');
+    expectPages(testFixture, ['-«', '+1', '2', '3', '»']);
+
+    changePageSize(testFixture, '20');
+    expectPages(testFixture, ['-«', '+1', '2', '»']);
+  });
+
+  it('should emit pageChange event with correct value', fakeAsync(() => {
+
+    spyOn(testComp, 'pageChanged');
+
+    changePage(testFixture, 3);
+    tick();
+
+    expect(testComp.pageChanged).toHaveBeenCalledWith(3);
+  }));
+
+  it('should emit pageSizeChange event with correct value', fakeAsync(() => {
+
+    spyOn(testComp, 'pageSizeChanged');
+
+    changePageSize(testFixture, '5');
+    tick();
+
+    expect(testComp.pageSizeChanged).toHaveBeenCalledWith(5);
+  }));
+
+  it('should set correct route parameters', fakeAsync(() => {
+    let paginationComponent: PaginationComponent = testFixture
+      .debugElement.query(By.css('ds-pagination')).references['p'];
+    routerStub = testFixture.debugElement.injector.get(Router);
+
+    testComp.collectionSize = 60;
+
+    changePage(testFixture, 3);
+    tick();
+    expect(routerStub.navigate).toHaveBeenCalledWith([{pageId: 'test', page: 3, pageSize: 10}]);
+    expect(paginationComponent.currentPage).toEqual(3);
+
+    changePageSize(testFixture, '20');
+    tick();
+    expect(routerStub.navigate).toHaveBeenCalledWith([{pageId: 'test', page: 3, pageSize: 20}]);
+    expect(paginationComponent.pageSize).toEqual(20);
+  }));
+
+  it('should get parameters from route', () => {
+
+    activatedRouteStub = testFixture.debugElement.injector.get(ActivatedRoute);
+    activatedRouteStub.testParams = {
+      pageId: 'test',
+      page: 2,
+      pageSize: 20
+    };
+
+    testFixture.detectChanges();
+
+    expectPages(testFixture, ['«', '1', '+2', '3', '4', '5', '»']);
+    expect(testComp.paginationOptions.currentPage).toEqual(2);
+    expect(testComp.paginationOptions.pageSize).toEqual(20);
+
+    activatedRouteStub.testParams = {
+      pageId: 'test',
+      page: 3,
+      pageSize: 40
+    };
+
+    testFixture.detectChanges();
+
+    expectPages(testFixture, ['«', '1', '2', '+3', '-»']);
+    expect(testComp.paginationOptions.currentPage).toEqual(3);
+    expect(testComp.paginationOptions.pageSize).toEqual(40);
+  });
+
+  it('should respond to windows resize', () => {
+    let paginationComponent: PaginationComponent = testFixture
+      .debugElement.query(By.css('ds-pagination')).references['p'];
+    mockStore = testFixture.debugElement.injector.get(Store);
+
+    mockStore.nextState({ width: 400, height: 770, breakPoint: 'xs' });
+
+    mockStore.select('hostWindow').subscribe((state) => {
+      paginationComponent.windowBreakPoint = state;
+      testFixture.detectChanges();
+      expectPages(testFixture, ['-«', '+1', '2', '3', '4', '5', '-...', '10', '»']);
+      de = testFixture.debugElement.query(By.css('ul.pagination'));
+      expect(de.nativeElement.classList.contains("pagination-sm")).toBeTruthy();
+    });
+  });
+});
+
+// declare a test component
+@Component({selector: 'test-cmp', template: ''})
+class TestComponent {
+
+  collection: string[] = [];
+  collectionSize: number;
+  paginationOptions = new PaginationOptions();
+
+  constructor() {
+    this.collection = Array.from(new Array(100), (x, i) => `item ${i + 1}`);
+    this.collectionSize = 100;
+    this.paginationOptions.id = 'test';
+  }
+
+  pageChanged(page) {
+    this.paginationOptions.currentPage = page;
+  }
+
+  pageSizeChanged(pageSize) {
+    this.paginationOptions.pageSize = pageSize;
+  }
+}

src/app/shared/pagination/pagination.component.ts

@@ -0,0 +1,239 @@
+import {
+  ChangeDetectionStrategy,
+  Component,
+  EventEmitter,
+  Input,
+  OnDestroy,
+  OnInit,
+  Output,
+  ViewEncapsulation
+} from '@angular/core'
+import { ActivatedRoute, Router } from '@angular/router';
+import { isNumeric } from "rxjs/util/isNumeric";
+import 'rxjs/add/operator/switchMap';
+import { Store } from "@ngrx/store";
+import { Observable } from "rxjs";
+
+import { HostWindowState } from "../host-window.reducer";
+import { PaginationOptions } from '../../core/shared/pagination-options.model';
+
+/**
+ * The default pagination controls component.
+ */
+@Component({
+  exportAs: 'paginationComponent',
+  selector: 'ds-pagination',
+  templateUrl: 'pagination.component.html',
+  changeDetection: ChangeDetectionStrategy.Default,
+  encapsulation: ViewEncapsulation.Emulated
+})
+export class PaginationComponent implements OnDestroy, OnInit {
+
+  /**
+   * Number of items in collection.
+   */
+  @Input() collectionSize: number;
+
+  /**
+   * Configuration for the NgbPagination component.
+   */
+  @Input() paginationOptions: PaginationOptions;
+
+  /**
+   * An event fired when the page is changed.
+   * Event's payload equals to the newly selected page.
+   */
+  @Output() pageChange: EventEmitter<number> = new EventEmitter<number>();
+
+  /**
+   * An event fired when the page size is changed.
+   * Event's payload equals to the newly selected page size.
+   */
+  @Output() pageSizeChange: EventEmitter<number> = new EventEmitter<number>();
+
+  /**
+   * Current page.
+   */
+  public currentPage = 1;
+
+  /**
+   * An observable of HostWindowState type
+   */
+  public hostWindow: Observable<HostWindowState>;
+
+  /**
+   * ID for the pagination instance. Only useful if you wish to
+   * have more than once instance at a time in a given component.
+   */
+  private id: string;
+
+  /**
+   * Number of items per page.
+   */
+  public pageSize: number = 10;
+
+  /**
+   * A number array that represents options for a context pagination limit.
+   */
+  private pageSizeOptions: Array<number>;
+
+  /**
+   * Local variable, which can be used in the template to access the paginate controls ngbDropdown methods and properties
+   */
+  public paginationControls;
+
+  /**
+   * Subscriber to observable.
+   */
+  private routeSubscription: any;
+
+  /**
+   * An object that represents pagination details of the current viewed page
+   */
+  public showingDetail: any = {
+    range: null,
+    total: null
+  };
+
+  /**
+   * Subscriber to observable.
+   */
+  private stateSubscription: any;
+
+  /**
+   * Contains current HostWindowState
+   */
+  public windowBreakPoint: HostWindowState;
+
+  /**
+   * Method provided by Angular. Invoked after the constructor.
+   */
+  ngOnInit() {
+    this.stateSubscription = this.hostWindow.subscribe((state: HostWindowState) => {
+      this.windowBreakPoint = state;
+    });
+    this.checkConfig(this.paginationOptions);
+    this.id = this.paginationOptions.id || null;
+    this.currentPage = this.paginationOptions.currentPage;
+    this.pageSize = this.paginationOptions.pageSize;
+    this.pageSizeOptions = this.paginationOptions.pageSizeOptions;
+
+    this.routeSubscription = this.route.params
+      .map(params => params)
+      .subscribe(params => {
+        if(this.id == params['pageId']
+           && (this.paginationOptions.currentPage != params['page']
+           || this.paginationOptions.pageSize != params['pageSize'])
+          ) {
+          this.validateParams(params['page'], params['pageSize']);
+        }
+      });
+    this.setShowingDetail();
+  }
+
+  /**
+   * Method provided by Angular. Invoked when the instance is destroyed.
+   */
+  ngOnDestroy() {
+    this.stateSubscription.unsubscribe();
+    this.routeSubscription.unsubscribe();
+  }
+
+  /**
+   * @param route
+   *    Route is a singleton service provided by Angular.
+   * @param router
+   *    Router is a singleton service provided by Angular.
+   */
+  constructor(
+    private route: ActivatedRoute,
+    private router: Router,
+    private store: Store<HostWindowState>
+  ){
+    this.hostWindow = this.store.select<HostWindowState>('hostWindow');
+  }
+
+  /**
+   * Method to set set new page and update route parameters
+   *
+   * @param page
+   *    The page being navigated to.
+   */
+  public doPageChange(page: number) {
+    this.router.navigate([{ pageId: this.id, page: page, pageSize: this.pageSize }]);
+    this.currentPage = page;
+    this.setShowingDetail();
+    this.pageChange.emit(page);
+  }
+
+  /**
+   * Method to set set new page size and update route parameters
+   *
+   * @param pageSize
+   *    The new page size.
+   */
+  public setPageSize(pageSize: number) {
+    this.router.navigate([{ pageId: this.id, page: this.currentPage, pageSize: pageSize }]);
+    this.pageSize = pageSize;
+    this.setShowingDetail();
+    this.pageSizeChange.emit(pageSize);
+  }
+
+  /**
+   * Method to set pagination details of the current viewed page.
+   */
+  private setShowingDetail() {
+    let firstItem;
+    let lastItem;
+    let lastPage = Math.round(this.collectionSize / this.pageSize);
+
+    firstItem = this.pageSize * (this.currentPage - 1) + 1;
+    if (this.currentPage != lastPage) {
+      lastItem = this.pageSize * this.currentPage;
+    } else {
+      lastItem = this.collectionSize;
+    }
+    this.showingDetail = {
+      range: firstItem + ' - ' + lastItem,
+      total: this.collectionSize
+    }
+  }
+
+  /**
+   * Validate query params
+   *
+   * @param page
+   *    The page number to validate
+   * @param pageSize
+   *    The page size to validate
+   */
+  private validateParams(page: any, pageSize: any) {
+    let filteredPageSize = this.pageSizeOptions.find(x => x == pageSize);
+    if (!isNumeric(page) || !filteredPageSize) {
+      let filteredPage = isNumeric(page) ? page : this.currentPage;
+      filteredPageSize = (filteredPageSize) ? filteredPageSize : this.pageSize;
+      this.router.navigate([{ pageId: this.id, page: filteredPage, pageSize: filteredPageSize }]);
+    } else {
+      // (+) converts string to a number
+      this.currentPage = +page;
+      this.pageSize = +pageSize;
+      this.pageChange.emit(this.currentPage);
+      this.pageSizeChange.emit(this.pageSize);
+    }
+  }
+
+  /**
+   * Ensure options passed contains the required properties.
+   *
+   * @param paginateOptions
+   *    The paginate options object.
+   */
+  private checkConfig(paginateOptions: any) {
+    var required = ['id', 'currentPage', 'pageSize', 'pageSizeOptions'];
+    var missing = required.filter(function (prop) { return !(prop in paginateOptions); });
+    if (0 < missing.length) {
+      throw new Error("Paginate: Argument is missing the following required properties: " + missing.join(', '));
+    }
+  }
+}
+

src/app/shared/shared.module.ts

@@ -3,10 +3,12 @@ import { CommonModule } from '@angular/common';
 import { RouterModule } from '@angular/router';
 import { FormsModule, ReactiveFormsModule } from '@angular/forms';
 
+import { Ng2PaginationModule } from 'ng2-pagination';
 import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
 import { TranslateModule } from 'ng2-translate/ng2-translate';
 
 import { ApiService } from './api.service';
+import { PaginationComponent } from "./pagination/pagination.component";
 
 const MODULES = [
   // Do NOT include UniversalModule, HttpModule, or JsonpModule here
@@ -15,6 +17,7 @@ const MODULES = [
   TranslateModule,
   FormsModule,
   ReactiveFormsModule,
+  Ng2PaginationModule,
   NgbModule
 ];
 
@@ -24,6 +27,7 @@ const PIPES = [
 
 const COMPONENTS = [
   // put shared components here
+  PaginationComponent
 ];
 
 const PROVIDERS = [

src/app/shared/testing/mock-store.ts

@@ -0,0 +1,28 @@
+import { Action } from '@ngrx/store';
+import { Observable } from 'rxjs/Observable';
+import { BehaviorSubject } from 'rxjs/BehaviorSubject';
+
+export class MockStore<T> extends BehaviorSubject<T> {
+
+  constructor(private _initialState: T) {
+    super(_initialState);
+  }
+
+  dispatch = (action: Action): void => {
+  }
+
+  select = <R>(pathOrMapFn: any): Observable<T> => {
+    return Observable.of(this.getValue());
+  }
+
+  nextState(_newState: T) {
+    this.next(_newState);
+  }
+
+}
+
+export class MockAction implements Action {
+  type = null;
+  payload: {};
+
+}

src/app/shared/testing/router-stubs.ts

@@ -0,0 +1,36 @@
+import {Params} from "@angular/router";
+import {BehaviorSubject} from "rxjs";
+
+export class RouterStub {
+  //noinspection TypeScriptUnresolvedFunction
+  navigate = jasmine.createSpy('navigate');
+  //navigate1: jasmine.createSpy('navigate');
+}
+
+export class ActivatedRouteStub {
+
+  // ActivatedRoute.params is Observable
+  private subject = new BehaviorSubject(this.testParams);
+  params = this.subject.asObservable();
+
+  constructor(params?: Params) {
+    if (params) {
+      this.testParams = params;
+    } else {
+      this.testParams = {};
+    }
+  }
+
+  // Test parameters
+  private _testParams: {};
+  get testParams() { return this._testParams; }
+  set testParams(params: {}) {
+    this._testParams = params;
+    this.subject.next(params);
+  }
+
+  // ActivatedRoute.snapshot.params
+  get snapshot() {
+    return { params: this.testParams };
+  }
+}