[ADF-2541] reset datatable selection when rows are changed from code (#3410)

* reset selection when rows are replaced from code

* code fixes

* unit test updates

* visualise selection count for testing purposes

* make row selection api public

* remove question mark from the event name

demo-shell/src/app/components/datatable/datatable.component.html

@@ -1,30 +1,34 @@
-<div class="p-10">
-    <adf-datatable
-        [data]="data"
-        [selectionMode]="selectionMode"
-        [multiselect]="multiselect"
-        [actions]="true"
-        rowStyleClass="custom-row-style"
-        (showRowActionsMenu)="onShowRowActionsMenu($event)"
-        (executeRowAction)="onExecuteRowAction($event)"
-        (row-click)="onRowClick($event)"
-        (row-dblclick)="onRowDblClick($event)">
-        <!-- HTML column definition demo -->
-        <!--
-        <data-columns>
-            <data-column type="image" key="icon" [sortable]="false"></data-column>
-            <data-column key="id" title="Id"></data-column>
-            <data-column key="createdOn" title="Created"></data-column>
-            <data-column key="name" title="Name" class="full-width name-column"></data-column>
-            <data-column key="createdBy.name" title="Created By"></data-column>
-        </data-columns>
-        -->
-    </adf-datatable>
+<adf-datatable
+    #dataTable
+    [data]="data"
+    [selectionMode]="selectionMode"
+    [multiselect]="multiselect"
+    [actions]="true"
+    rowStyleClass="custom-row-style"
+    (showRowActionsMenu)="onShowRowActionsMenu($event)"
+    (executeRowAction)="onExecuteRowAction($event)"
+    (row-click)="onRowClick($event)"
+    (row-dblclick)="onRowDblClick($event)">
+    <!-- HTML column definition demo -->
+    <!--
+    <data-columns>
+        <data-column type="image" key="icon" [sortable]="false"></data-column>
+        <data-column key="id" title="Id"></data-column>
+        <data-column key="createdOn" title="Created"></data-column>
+        <data-column key="name" title="Name" class="full-width name-column"></data-column>
+        <data-column key="createdBy.name" title="Created By"></data-column>
+    </data-columns>
+    -->
+</adf-datatable>
+
+<div>
+    Selected items: {{ dataTable.selection?.length }}
 </div>
-<div class="p-10" data-automation-id="multiselect">
+
+<div data-automation-id="multiselect">
     <mat-checkbox [(ngModel)]="multiselect">{{ 'DATATABLE.MULTISELECT'| translate }}</mat-checkbox>
 </div>
-<div class="p-10">
+<div>
     <p>{{ 'DATATABLE.MULTISELECT_DESCRIPTION'| translate }}</p>
     <mat-form-field>
         <mat-select placeholder="Selection Mode" [(ngModel)]="selectionMode" name="food">
@@ -34,7 +38,7 @@
         </mat-select>
     </mat-form-field>
 </div>
-<div class="p-10">
+<div>
     <button mat-raised-button (click)="reset()">{{ 'DATATABLE.RESET_DEFAULT'| translate }}</button>
     <button mat-raised-button (click)="addRow()">{{ 'DATATABLE.ADD_ROW'| translate }}</button>
     <button mat-raised-button (click)="replaceRows()">{{ 'DATATABLE.REPLACE_ROWS'| translate }}</button>

demo-shell/src/app/components/datatable/datatable.component.scss

@@ -1,16 +0,0 @@
-adf-datatable ::ng-deep .custom-row-style.alfresco-datatable__row:focus {
-    outline-offset: -1px;
-    outline-width: 1px;
-    outline-color: green;
-    outline-style: solid;
-}
-
-adf-datatable ::ng-deep .custom-row-style.alfresco-datatable__row--selected {
-    color: green;
-}
-
-adf-datatable ::ng-deep table {
-    max-width: 100%;
-    overflow: hidden;
-    white-space: normal !important;
-}

demo-shell/src/app/components/datatable/datatable.component.ts

@@ -22,8 +22,7 @@ import { Observable } from 'rxjs/Observable';
 
 @Component({
     selector: 'app-datatable',
-    templateUrl: './datatable.component.html',
-    styleUrls: ['./datatable.component.scss']
+    templateUrl: './datatable.component.html'
 })
 export class DataTableComponent {
 
@@ -41,8 +40,8 @@ export class DataTableComponent {
 
     private _imageUrl = 'http://placehold.it/140x100';
     private _createdBy: any = {
-        name: 'Denys Vuika',
-        email: 'denys.vuika@alfresco.com'
+        name: 'Administrator',
+        email: 'admin@alfresco.com'
     };
 
     constructor(private apiService: AlfrescoApiService, private logService: LogService) {