[ADF-3930] fix infinite pagination (#4275)

* refactoring infinite pagination

* fix lint

* fix import reuqest pagination from core

* fix failing unit test

docs/content-services/content-node-selector-panel.component.md

@@ -39,6 +39,7 @@ Opens a Content [`Node`](https://github.com/Alfresco/alfresco-js-api/blob/develo
 | isSelectionValid | `ValidationFunction` | defaultValidation | Function used to decide if the selected node has permission to be selected. Default value is a function that always returns true. |
 | pageSize | `number` |  | Number of items shown per page in the list. |
 | rowFilter | `RowFilter` | null | Custom row filter function. See the [Document List component](document-list.component.md#custom-row-filter) for more information. |
+| where | `string` | `null` | Custom where filter function. See the [Document List component](document-list.component.md) for more information. |
 
 ### Events
 

docs/content-services/content-node-selector.component.md

@@ -37,6 +37,7 @@ export interface ContentNodeSelectorComponentData {
     dropdownHideMyFiles?: boolean;
     dropdownSiteList?: SitePaging;
     rowFilter?: any;
+    where?: string;
     imageResolver?: any;
     isSelectionValid?: (entry: Node) => boolean;
     breadcrumbTransform?: (node) => any;
@@ -55,6 +56,7 @@ The properties are described in the table below:
 | dropdownHideMyFiles | `boolean` | `false` | Hide the "My Files" option added to the site list by default. See the [Sites Dropdown component](sites-dropdown.component.md) for more information. |
 | dropdownSiteList | [`SitePaging`](https://github.com/Alfresco/alfresco-js-api/blob/master/src/alfresco-core-rest-api/docs/SitePaging.md) | `null` | Custom site for site dropdown same as siteList. See the [Sites Dropdown component](sites-dropdown.component.md) for more information. |
 | rowFilter | [`RowFilter`](../../lib/content-services/document-list/data/row-filter.model.ts) | `null` | Custom row filter function. See the [Document List component](document-list.component.md#custom-row-filter) for more information. |
+| where | `string` | `null` | Custom where filter function. See the [Document List component](document-list.component.md) for more information. |
 | imageResolver | [`ImageResolver`](../../lib/content-services/document-list/data/image-resolver.model.ts) | `null` | Custom image resolver function. See the [Document List component](document-list.component.md#custom-row-filter) for more information. |
 | pageSize | `number` |  | Number of items shown per page in the list. |
 | isSelectionValid | [`ValidationFunction`](../../lib/content-services/content-node-selector/content-node-selector-panel.component.ts) | `defaultValidation` | Function used to decide if the selected node has permission to be selected. Default value is a function that always returns true. |

docs/content-services/document-list.component.md

@@ -66,6 +66,7 @@ Displays the documents from a repository.
 | emptyFolderImageUrl | `string` |  | Custom image for empty folder. Default value: './assets/images/empty_doc_lib.svg' |
 | imageResolver | `any \| null` | null | Custom image resolver |
 | includeFields | `string[]` |  | Include additional information about the node in the server request. For example: association, isLink, isLocked and others. |
+| where | `string` |  |  filter the Node list using the where condition of the rest api for example (isFolder=true) see the rest api documentation for more information. |
 | loading | `boolean` | false | Toggles the loading state and animated spinners for the component. Used in combination with `navigate=false` to perform custom navigation and loading state indication. |
 | locationFormat | `string` | "/" | The default route for all the location-based columns (if declared). |
 | maxItems | `number` |  | Default value is stored into user preference settings use it only if you are not using the pagination |

lib/content-services/content-node-selector/content-node-dialog.service.ts

@@ -143,7 +143,7 @@ export class ContentNodeDialogService {
                 actionName: action,
                 currentFolderId: contentEntry.parentId,
                 imageResolver: this.imageResolver.bind(this),
-                rowFilter: this.rowFilter.bind(this, contentEntry.id),
+                where: '(isFolder=true)',
                 isSelectionValid: this.isCopyMoveSelectionValid.bind(this),
                 excludeSiteContent: excludeSiteContent || ContentNodeDialogService.nonDocumentSiteContent,
                 select: select
@@ -186,7 +186,7 @@ export class ContentNodeDialogService {
             currentFolderId: contentEntry.id,
             imageResolver: this.imageResolver.bind(this),
             isSelectionValid: this.hasPermissionOnNodeFolder.bind(this),
-            rowFilter: this.rowFilter.bind(this, contentEntry.id),
+            where: '(isFolder=true)',
             select: select
         };
 
@@ -232,16 +232,6 @@ export class ContentNodeDialogService {
         return null;
     }
 
-    private rowFilter(currentNodeId: string, row: ShareDataRow): boolean {
-        const node: Node = row.node.entry;
-
-        if (node.id === currentNodeId || node.isFile) {
-            return false;
-        } else {
-            return true;
-        }
-    }
-
     private isNodeFile(entry: Node): boolean {
         return entry.isFile;
     }

lib/content-services/content-node-selector/content-node-selector-panel.component.html

@@ -56,7 +56,7 @@
             [adf-highlight]="searchTerm"
             adf-highlight-selector=".adf-name-location-cell-name"
             [showHeader]="false"
-            [node]="nodes"
+            [node]="nodePaging"
             [maxItems]="pageSize"
             [rowFilter]="_rowFilter"
             [imageResolver]="imageResolver"
@@ -65,6 +65,7 @@
             [contextMenuActions]="false"
             [contentActions]="false"
             [allowDropFiles]="false"
+            [where]="where"
             (folderChange)="onFolderChange()"
             (ready)="onFolderLoaded()"
             (node-dblclick)="onNodeDoubleClick($event)"

lib/content-services/content-node-selector/content-node-selector-panel.component.spec.ts

@@ -517,7 +517,7 @@ describe('ContentNodeSelectorComponent', () => {
 
             it('should clear the search field, nodes and chosenNode when clicking on the X (clear) icon', () => {
                 component.chosenNode = <Node> {};
-                component.nodes = {
+                component.nodePaging = {
                     list: {
                         entries: [{ entry: component.chosenNode }]
                     }
@@ -528,7 +528,7 @@ describe('ContentNodeSelectorComponent', () => {
                 component.clear();
 
                 expect(component.searchTerm).toBe('');
-                expect(component.nodes).toEqual(null);
+                expect(component.nodePaging).toEqual(null);
                 expect(component.chosenNode).toBeNull();
                 expect(component.showingSearchResults).toBeFalsy();
             });

lib/content-services/content-node-selector/content-node-selector-panel.component.ts

@@ -19,7 +19,7 @@ import { Component, EventEmitter, Input, OnInit, Output, ViewChild, ViewEncapsul
 import { AlfrescoApiService, HighlightDirective, UserPreferencesService, PaginationModel } from '@alfresco/adf-core';
 import { FormControl } from '@angular/forms';
 import { Node, NodePaging, Pagination, SiteEntry, SitePaging } from '@alfresco/js-api';
-import { DocumentListComponent, PaginationStrategy } from '../document-list/components/document-list.component';
+import { DocumentListComponent } from '../document-list/components/document-list.component';
 import { RowFilter } from '../document-list/data/row-filter.model';
 import { ImageResolver } from '../document-list/data/image-resolver.model';
 import { ContentNodeSelectorService } from './content-node-selector.service';
@@ -62,6 +62,13 @@ export class ContentNodeSelectorPanelComponent implements OnInit {
 
     _rowFilter: RowFilter = defaultValidation;
 
+    /** Custom where filter function. See the
+     * [Document List component](document-list.component.md)
+     * for more information.
+     */
+    @Input()
+    where: string;
+
     /** Custom row filter function. See the
      * [Document List component](document-list.component.md#custom-row-filter)
      * for more information.
@@ -125,7 +132,7 @@ export class ContentNodeSelectorPanelComponent implements OnInit {
     @ViewChild(HighlightDirective)
     highlighter: HighlightDirective;
 
-    nodes: NodePaging | null = null;
+    nodePaging: NodePaging | null = null;
     siteId: null | string;
     searchTerm: string = '';
     showingSearchResults: boolean = false;
@@ -133,7 +140,6 @@ export class ContentNodeSelectorPanelComponent implements OnInit {
     inDialog: boolean = false;
     _chosenNode: Node = null;
     folderIdToShow: string | null = null;
-    paginationStrategy: PaginationStrategy = PaginationStrategy.Infinite;
     pagination: BehaviorSubject<PaginationModel>;
 
     skipCount: number = 0;
@@ -255,7 +261,7 @@ export class ContentNodeSelectorPanelComponent implements OnInit {
      */
     clearSearch() {
         this.searchTerm = '';
-        this.nodes = null;
+        this.nodePaging = null;
         this.skipCount = 0;
         this.chosenNode = null;
         this.showingSearchResults = false;
@@ -276,7 +282,7 @@ export class ContentNodeSelectorPanelComponent implements OnInit {
      * Load the first page of a new search result
      */
     private startNewSearch(): void {
-        this.nodes = null;
+        this.nodePaging = null;
         this.skipCount = 0;
         this.chosenNode = null;
         this.folderIdToShow = null;
@@ -313,14 +319,7 @@ export class ContentNodeSelectorPanelComponent implements OnInit {
         this.showingSearchResults = true;
         this.loadingSearchResults = false;
 
-        // DocumentList hack, since data displaying for preloaded nodes is a little bit messy there
-        if (!this.nodes) {
-            this.nodes = nodePaging;
-        } else {
-            this.documentList.data.loadPage(nodePaging, true);
-        }
-
-        this.pagination.next(nodePaging.list.pagination);
+        this.nodePaging = nodePaging;
     }
 
     /**

lib/content-services/content-node-selector/content-node-selector.component-data.interface.ts

@@ -25,6 +25,7 @@ export interface ContentNodeSelectorComponentData {
     dropdownHideMyFiles?: boolean;
     dropdownSiteList?: SitePaging;
     rowFilter?: any;
+    where?: string;
     imageResolver?: any;
     isSelectionValid?: (entry: Node) => boolean;
     breadcrumbTransform?: (node) => any;

lib/content-services/content-node-selector/content-node-selector.component.html

@@ -13,6 +13,7 @@
         [isSelectionValid]="data?.isSelectionValid"
         [breadcrumbTransform]="data?.breadcrumbTransform"
         [excludeSiteContent]="data?.excludeSiteContent"
+        [where]="data?.where"
         (select)="onSelect($event)">
     </adf-content-node-selector-panel>
 </mat-dialog-content>
@@ -30,4 +31,4 @@
         (click)="onClick()"
         data-automation-id="content-node-selector-actions-choose">{{ buttonActionName | translate }}
     </button>
-</mat-dialog-actions>
+</mat-dialog-actions>

lib/content-services/content-node-share/content-node-share.directive.ts

@@ -48,13 +48,13 @@ export class NodeSharedDirective implements OnChanges {
 
     constructor(private dialog: MatDialog, private zone: NgZone) {}
 
-    shareNode(node: NodeEntry) {
-        if (node && node.entry && node.entry.isFile) {
+    shareNode(nodeEntry: NodeEntry) {
+        if (nodeEntry && nodeEntry.entry && nodeEntry.entry.isFile) {
             this.dialog.open(ShareDialogComponent, {
                 width: '600px',
                 panelClass: 'adf-share-link-dialog',
                 data: {
-                    node: node,
+                    node: nodeEntry,
                     baseShareUrl: this.baseShareUrl
                 }
             });
@@ -63,7 +63,7 @@ export class NodeSharedDirective implements OnChanges {
 
     ngOnChanges() {
         this.zone.onStable.subscribe(() => {
-            if (this.node) {
+            if (this.node && this.node.entry) {
                 this.isFile = this.node.entry.isFile;
                 this.isShared = this.node.entry.properties['qshare:sharedId'];
             }

lib/content-services/document-list/components/document-list.component.spec.ts

@@ -1269,6 +1269,24 @@ describe('DocumentList', () => {
         documentList.ngOnChanges({ currentFolderId: new SimpleChange(null, '-root-', false) });
 
         expect(documentListService.getFolder).toHaveBeenCalledWith(null, {
+            where: undefined,
+            maxItems: 25,
+            skipCount: 0,
+            rootFolderId: 'fake-id'
+        }, ['test-include']);
+    });
+
+    it('should add where in the server request when present', () => {
+        fixture.detectChanges();
+        documentList.currentFolderId = 'fake-id';
+        documentList.includeFields = ['test-include'];
+        documentList.where = '(isFolder=true)';
+        spyOn(documentListService, 'getFolder').and.callThrough();
+
+        documentList.ngOnChanges({ currentFolderId: new SimpleChange(null, '-root-', false) });
+
+        expect(documentListService.getFolder).toHaveBeenCalledWith(null, {
+            where: '(isFolder=true)',
             maxItems: 25,
             skipCount: 0,
             rootFolderId: 'fake-id'

lib/content-services/document-list/components/document-list.component.ts

@@ -39,7 +39,8 @@ import {
     ThumbnailService,
     CustomLoadingContentTemplateDirective,
     CustomNoPermissionTemplateDirective,
-    CustomEmptyContentTemplateDirective
+    CustomEmptyContentTemplateDirective,
+    RequestPaginationModel
 } from '@alfresco/adf-core';
 
 import { Node, NodeEntry, NodePaging } from '@alfresco/js-api';
@@ -88,6 +89,10 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
     @Input()
     includeFields: string[];
 
+    /** filter the Node list using the where condition of the rest api for example (isFolder=true) see the rest api documentation for more information. */
+    @Input()
+    where: string;
+
     /** Change the display mode of the table. Can be "list" or "gallery". */
     @Input()
     display: string = DisplayMode.List;
@@ -260,7 +265,9 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
     // @deprecated 3.0.0
     folderNode: Node;
 
-    private _pagination: BehaviorSubject<PaginationModel>;
+    private _pagination: PaginationModel;
+    private $pagination: BehaviorSubject<PaginationModel>;
+
     private layoutPresets = {};
     private subscriptions: Subscription[] = [];
     private rowMenuCache: { [key: string]: ContentActionModel[] } = {};
@@ -274,6 +281,13 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
                 private customResourcesService: CustomResourcesService,
                 private contentService: ContentService,
                 private thumbnailService: ThumbnailService) {
+
+        this._pagination = <PaginationModel> {
+            maxItems: this.maxItems || this.preferences.paginationSize,
+            skipCount: 0,
+            totalItems: 0,
+            hasMoreItems: false
+        };
     }
 
     getContextActions(node: NodeEntry) {
@@ -310,17 +324,10 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
     }
 
     get pagination(): BehaviorSubject<PaginationModel> {
-        if (!this._pagination) {
-            let maxItems = this.maxItems || this.preferences.paginationSize;
-            let defaultPagination = <PaginationModel> {
-                maxItems: maxItems,
-                skipCount: 0,
-                totalItems: 0,
-                hasMoreItems: false
-            };
-            this._pagination = new BehaviorSubject<PaginationModel>(defaultPagination);
+        if (!this.$pagination) {
+            this.$pagination = new BehaviorSubject<PaginationModel>(this._pagination);
         }
-        return this._pagination;
+        return this.$pagination;
     }
 
     isMobile(): boolean {
@@ -412,7 +419,9 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
             this.loadFolder();
         } else if (this.data) {
             if (changes.node && changes.node.currentValue) {
-                this.data.loadPage(changes.node.currentValue);
+                let merge = this._pagination ? this._pagination.merge : false;
+
+                this.data.loadPage(changes.node.currentValue, merge);
                 this.onDataReady(changes.node.currentValue);
             } else if (changes.imageResolver) {
                 this.data.setImageResolver(changes.imageResolver.currentValue);
@@ -424,7 +433,7 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
         this.ngZone.run(() => {
             this.resetSelection();
             if (this.node) {
-                this.data.loadPage(this.node, this.pagination.getValue().merge);
+                this.data.loadPage(this.node, this._pagination.merge);
                 this.onDataReady(this.node);
             } else {
                 this.loadFolder();
@@ -579,7 +588,7 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
     }
 
     loadFolder() {
-        if (!this.pagination.getValue().merge) {
+        if (!this._pagination.merge) {
             this.setLoadingState(true);
         }
 
@@ -593,33 +602,36 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
     loadFolderByNodeId(nodeId: string) {
         if (this.customResourcesService.isCustomSource(nodeId)) {
             this.updateCustomSourceData(nodeId);
-            this.customResourcesService.loadFolderByNodeId(nodeId, this.pagination.getValue(), this.includeFields)
-                .subscribe((page: NodePaging) => {
-                    this.onPageLoaded(page);
+            this.customResourcesService.loadFolderByNodeId(nodeId, this._pagination, this.includeFields)
+                .subscribe((nodePaging: NodePaging) => {
+                    this.onPageLoaded(nodePaging);
                 }, (err) => {
                     this.error.emit(err);
                 });
         } else {
-            let pagination = this.pagination.getValue();
+
             this.documentListService.getFolder(null, {
-                maxItems: pagination.maxItems,
-                skipCount: pagination.skipCount,
-                rootFolderId: nodeId
+                maxItems: this._pagination.maxItems,
+                skipCount: this._pagination.skipCount,
+                rootFolderId: nodeId,
+                where: this.where
             }, this.includeFields)
                 .subscribe((nodePaging: NodePaging) => {
-                    this.data.loadPage(nodePaging, this.pagination.getValue().merge);
-                    this.setLoadingState(false);
-                    this.onDataReady(nodePaging);
-                    this.documentListService.getFolderNode(nodeId, this.includeFields).subscribe((nodeEntry: NodeEntry) => {
-                        this.folderNode = nodeEntry.entry;
-                        this.$folderNode.next(this.folderNode);
-                    });
+                    this.onPageLoaded(nodePaging);
+                    this.getSourceNodeWithPath(nodeId);
                 }, (err) => {
                     this.handleError(err);
                 });
         }
     }
 
+    getSourceNodeWithPath(nodeId: string) {
+        this.documentListService.getFolderNode(nodeId, this.includeFields).subscribe((nodeEntry: NodeEntry) => {
+            this.folderNode = nodeEntry.entry;
+            this.$folderNode.next(this.folderNode);
+        });
+    }
+
     resetSelection() {
         this.dataTable.resetSelection();
         this.selection = [];
@@ -628,7 +640,7 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
 
     onPageLoaded(nodePaging: NodePaging) {
         if (nodePaging) {
-            this.data.loadPage(nodePaging, this.pagination.getValue().merge);
+            this.data.loadPage(nodePaging, this._pagination.merge);
             this.setLoadingState(false);
             this.onDataReady(nodePaging);
         }
@@ -787,12 +799,13 @@ export class DocumentListComponent implements OnInit, OnChanges, OnDestroy, Afte
 
     private onDataReady(nodePaging: NodePaging) {
         this.ready.emit(nodePaging);
-
         this.pagination.next(nodePaging.list.pagination);
     }
 
-    updatePagination(pagination: PaginationModel) {
-        this.pagination.next(pagination);
+    updatePagination(requestPaginationModel: RequestPaginationModel) {
+        this._pagination.maxItems = requestPaginationModel.maxItems;
+        this._pagination.merge = requestPaginationModel.merge;
+        this._pagination.skipCount = requestPaginationModel.skipCount;
         this.reload();
     }
 

lib/content-services/document-list/data/share-datatable-adapter.ts

@@ -245,11 +245,11 @@ export class ShareDataTableAdapter implements DataTableAdapter {
         }
     }
 
-    public loadPage(page: NodePaging, merge: boolean = false) {
+    public loadPage(nodePaging: NodePaging, merge: boolean = false) {
         let shareDataRows: ShareDataRow[] = [];
 
-        if (page && page.list) {
-            let nodeEntries: NodeEntry[] = page.list.entries;
+        if (nodePaging && nodePaging.list) {
+            let nodeEntries: NodeEntry[] = nodePaging.list.entries;
             if (nodeEntries && nodeEntries.length > 0) {
                 shareDataRows = nodeEntries.map((item) => new ShareDataRow(item, this.contentService, this.permissionsStyle, this.thumbnailService));
 

lib/content-services/document-list/services/document-list.service.ts

@@ -105,6 +105,9 @@ export class DocumentListService {
             if (opts.skipCount) {
                 params.skipCount = opts.skipCount;
             }
+            if (opts.where) {
+                params.where = opts.where;
+            }
         }
 
         return from(this.apiService.getInstance().nodes.getNodeChildren(rootNodeId, params)).pipe(

lib/core/models/pagination.model.ts

@@ -20,15 +20,15 @@ import { Pagination } from '@alfresco/js-api';
 export class PaginationModel extends Pagination {
     merge?: boolean;
 
-    constructor(obj?: any) {
-        super(obj);
-        if (obj) {
-            this.count = obj.count;
-            this.hasMoreItems = obj.hasMoreItems ? obj.hasMoreItems : false;
-            this.merge = obj.merge ? obj.merge : false;
-            this.totalItems = obj.totalItems;
-            this.skipCount = obj.skipCount;
-            this.maxItems = obj.maxItems;
+    constructor(input?: any) {
+        super(input);
+        if (input) {
+            this.count = input.count;
+            this.hasMoreItems = input.hasMoreItems ? input.hasMoreItems : false;
+            this.merge = input.merge ? input.merge : false;
+            this.totalItems = input.totalItems;
+            this.skipCount = input.skipCount;
+            this.maxItems = input.maxItems;
         }
     }
 }

lib/core/models/public-api.ts

@@ -24,3 +24,4 @@ export * from './ecm-company.model';
 export * from './redirection.model';
 export * from './pagination.model';
 export * from './oauth-config.model';
+export * from './request-pagination.model';

lib/core/models/request-pagination.model.ts

@@ -0,0 +1,31 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export class RequestPaginationModel {
+
+    skipCount?: number;
+
+    maxItems?: number;
+
+    merge?: boolean = false;
+
+    constructor(input?: any) {
+        if (input) {
+            Object.assign(this, input);
+        }
+    }
+}

lib/core/pagination/infinite-pagination.component.spec.ts

@@ -111,6 +111,36 @@ describe('InfinitePaginationComponent', () => {
             expect(loadMoreButton).not.toBeNull();
         });
 
+        it('should NOT show the load more button if there are no more elements to load', (done) => {
+            pagination = { maxItems: 444, skipCount: 25, totalItems: 30, hasMoreItems: false };
+
+            component.target.pagination.next(pagination);
+
+            fixture.detectChanges();
+
+            component.onLoadMore();
+
+            fixture.whenStable().then(() => {
+                let loadMoreButton = fixture.debugElement.query(By.css('[data-automation-id="adf-infinite-pagination-button"]'));
+                expect(loadMoreButton).toBeNull();
+                done();
+            });
+        });
+
+        it('should  show the load more button if there are  more elements to load', (done) => {
+            pagination = { maxItems: 444, skipCount: 25, totalItems: 55, hasMoreItems: true };
+
+            component.target.pagination.next(pagination);
+
+            fixture.detectChanges();
+
+            fixture.whenStable().then(() => {
+                let loadMoreButton = fixture.debugElement.query(By.css('[data-automation-id="adf-infinite-pagination-button"]'));
+                expect(loadMoreButton).not.toBeNull();
+                done();
+            });
+        });
+
         it('should NOT show anything if pagination has NO more items', () => {
             pagination.hasMoreItems = false;
             component.target.updatePagination(pagination);
@@ -123,15 +153,16 @@ describe('InfinitePaginationComponent', () => {
         });
 
         it('should trigger the loadMore event with the proper pagination object', (done) => {
-            pagination.hasMoreItems = true;
-            pagination.skipCount = 5;
-            component.target.updatePagination(pagination);
+            pagination = { maxItems: 444, skipCount: 25, totalItems: 55, hasMoreItems: true };
+
+            component.target.pagination.next(pagination);
+
             component.isLoading = false;
             component.pageSize = 5;
             fixture.detectChanges();
 
             component.loadMore.subscribe((newPagination: Pagination) => {
-                expect(newPagination.skipCount).toBe(10);
+                expect(newPagination.skipCount).toBe(5);
                 done();
             });
 
@@ -166,10 +197,9 @@ describe('InfinitePaginationComponent', () => {
             component.onLoadMore();
 
             expect(spyTarget).toHaveBeenCalledWith({
-                maxItems: 444,
                 skipCount: 25,
-                totalItems: 888,
-                hasMoreItems: true,
+                maxItems: 25,
+                hasMoreItems: false,
                 merge: true
             });
         });
@@ -182,10 +212,9 @@ describe('InfinitePaginationComponent', () => {
             component.onLoadMore();
 
             expect(spyTarget).toHaveBeenCalledWith({
-                maxItems: 444,
+                maxItems: 7,
                 skipCount: 7,
-                totalItems: 888,
-                hasMoreItems: true,
+                hasMoreItems: false,
                 merge: true
             });
         });

lib/core/pagination/infinite-pagination.component.ts

@@ -27,6 +27,7 @@ import { PaginatedComponent } from './paginated-component.interface';
 import { Subscription } from 'rxjs';
 import { PaginationComponentInterface } from './pagination-component.interface';
 import { PaginationModel } from '../models/pagination.model';
+import { RequestPaginationModel } from '../models/request-pagination.model';
 import { UserPreferencesService, UserPreferenceValues } from '../services/user-preferences.service';
 
 @Component({
@@ -39,12 +40,6 @@ import { UserPreferencesService, UserPreferenceValues } from '../services/user-p
 })
 export class InfinitePaginationComponent implements OnInit, OnDestroy, PaginationComponentInterface {
 
-    static DEFAULT_PAGINATION: PaginationModel = {
-        skipCount: 0,
-        hasMoreItems: false,
-        merge: true
-    };
-
     /** Component that provides custom pagination support. */
     @Input()
     target: PaginatedComponent;
@@ -59,10 +54,15 @@ export class InfinitePaginationComponent implements OnInit, OnDestroy, Paginatio
 
     /** Emitted when the "Load More" button is clicked. */
     @Output()
-    loadMore: EventEmitter<PaginationModel> = new EventEmitter<PaginationModel>();
+    loadMore: EventEmitter<RequestPaginationModel> = new EventEmitter<RequestPaginationModel>();
 
     pagination: PaginationModel;
 
+    requestPaginationModel: RequestPaginationModel = {
+        skipCount: 0,
+        merge: true
+    };
+
     private paginationSubscription: Subscription;
 
     constructor(private cdr: ChangeDetectorRef, private userPreferencesService: UserPreferencesService) {
@@ -73,6 +73,11 @@ export class InfinitePaginationComponent implements OnInit, OnDestroy, Paginatio
             this.paginationSubscription = this.target.pagination.subscribe((pagination) => {
                 this.isLoading = false;
                 this.pagination = pagination;
+
+                if (!this.pagination.hasMoreItems) {
+                    this.pagination.hasMoreItems = false;
+                }
+
                 this.cdr.detectChanges();
             });
         }
@@ -80,26 +85,18 @@ export class InfinitePaginationComponent implements OnInit, OnDestroy, Paginatio
         this.userPreferencesService.select(UserPreferenceValues.PaginationSize).subscribe((pagSize) => {
             this.pageSize = this.pageSize || pagSize;
         });
-
-        if (!this.pagination) {
-            this.pagination = InfinitePaginationComponent.DEFAULT_PAGINATION;
-        }
     }
 
     onLoadMore() {
-        this.pagination.skipCount += this.pageSize;
-        this.pagination.merge = true;
-        this.loadMore.next(this.pagination);
+        this.requestPaginationModel.skipCount += this.pageSize;
+        this.requestPaginationModel.merge = true;
+        this.requestPaginationModel.maxItems = this.pageSize;
 
-        if (this.pagination.skipCount >= this.pagination.totalItems || !this.pagination.hasMoreItems) {
-            this.pagination.hasMoreItems = false;
-        }
+        this.loadMore.next(this.requestPaginationModel);
 
         if (this.target) {
-            this.target.pagination.value.merge = this.pagination.merge;
-            this.target.pagination.value.skipCount = this.pagination.skipCount;
             this.isLoading = true;
-            this.target.updatePagination(<PaginationModel> this.pagination);
+            this.target.updatePagination(<RequestPaginationModel> this.requestPaginationModel);
         }
     }
 

lib/core/pagination/paginated-component.interface.ts

@@ -17,8 +17,9 @@
 
 import { PaginationModel } from '../models/pagination.model';
 import { BehaviorSubject } from 'rxjs';
+import { RequestPaginationModel } from '../models/request-pagination.model';
 
 export interface PaginatedComponent {
     pagination: BehaviorSubject<PaginationModel>;
-    updatePagination(pagination: PaginationModel);
+    updatePagination(requestPaginationModel: RequestPaginationModel);
 }